title:
Determination of gamma from charmless B^+/- -> M^0 M^+/- decays using
  U-spin

abstract:
  U-spin multiplet approach is applied to the full set of charmless hadronic
B+/- --> M0 M+/- decays for the purpose of precise extraction of the unitarity
angle gamma. Each of the four data sets, P0 P+/-, P0 V+/-, V0 P+/- and V0 V+/-,
with P = pseudoscalar and V = vector, can be used to yield a precise value of
gamma. The crucial advantage of this method over the common SU(3) symmetry
based quark-diagrammatic approach is that no assumptions regarding relative
sizes of topological decay amplitudes need to be made. As a result, this method
avoids an uncontrollable theoretical uncertainty that is related to the neglect
of some topological diagrams (e.g., exchange and annihilation graphs) in the
SU(3) approach. Application of the U-spin approach to the current data yields:
gamma=54^{+12}_{-11} degrees. We find that improved measurements of phi pi+/-
and K*0bar K+/- branching ratios would lead to appreciably better extraction of
gamma. In this method, which is completely data driven, in a few years we
should be able to obtain a model independent determination of gamma with an
accuracy of O(few degrees).


title:
Big Bang Nucleosynthesis Constraints on Universal Extra Dimensions and
  Varying Fundamental Constants

abstract:
  The successful prediction of light element abundances from Big Bang
Nucleosynthesis has been a pillar of the standard model of Cosmology. Because
many of the relevant reaction rates are sensitive to the values of fundamental
constants, such as the fine structure constant and the strong coupling
constant, BBN is a useful tool to probe and to put constraints on possible
cosmological variations of these constants, which arise naturally from many
versions of extra-dimensional theories. In this paper, we study the dependences
of fundamental constants on the radion field of the universal extra dimension
model, and calculate the effects of such varying constants on BBN. We show that
the discrepancy between BBN and the Wilkinson Microwave Anisotropy Probe data
on the baryon-to-photon ratio may be reduced if the volume of the extra
dimensions was slightly larger - by $\mathcal{O} (10^{-3})$ - at the BBN era
compared to its present value, which would result in smaller gauge couplings at
BBN by the same factor.


title:
The ~U(12)-Classification Scheme, Static U(4)-Spin Symmetry for
  Light-Quarks and "Exotic" Hadrons

abstract:
  Several years ago we have proposed a manifestly covariant
$\tilde{U}(12)_{SF}$-classification scheme of hadrons, which maintains the
successful $SU(6)_{SF}\otimes O(3)_{L}$ framework in Non-Relativistic Quark
Model and is also reconcilable with the mechanism of Spontaneously-Broken
Chiral Symmetry in Relativistic Field Theoretical Models. The essential point
here is to notice the overlooked freedom of the $SU(2)_{\rho}$-spin for
(confined) light quarks, which leads to existence of new type of ``exotic''
hadrons, called ``chiralons'' and to a selection rule, $\rho_{3}$-line rule, on
the spectator quark line. A series of puzzling new hadrons recently observed
such as X(3872)-meson family and $\Theta (1540)$ and so on are possibly
classified mostly as chiralons.


title: Quasi-particle perspective on QCD matter and critical end point effects

abstract:
  Our quasi-particle model is compared with recent lattice QCD data at finite
temperature and baryon number density with emphasis on the coefficients in the
Taylor series expansion of thermodynamic observables. The inclusion of static
critical end point effects into the equation of state is discussed.


title: Energy loss and dynamical evolution of quark $p_T$ spectra

abstract:
  Average energy loss of light quarks has been calculated in a two stage
equilibrium scenario where the quarks are executing Brownian motion in a
gluonic heat bath. The evolution of the quark $p_T$ spectra is studied by
solving Fokker-Planck equation in an expanding plasma. Results are finally
compared with experimentally measured pion $p_T$ spectrum at RHIC.


title: Comparing extractions of Sivers functions

abstract:
  A comparison is given of the various recently published extractions of the
Sivers functions from the HERMES and COMPASS data on single-transverse spin
asymmetries in semi-inclusive deeply inelastic scattering.


title: Kaluza-Klein gravitons at the LHC and in extensive air showers

abstract:
  The small curvature option of the Randall-Sundrum model with two branes is
considered which has almost continuous spectrum of low-mass Kaluza-Klein
gravitons. It is shown that gravity effects related with these excitations can
be detected in double diffractive events at the LHC and in inclined air showers
induced by interactions of cosmic neutrinos with atmospheric nucleons at
ultra-high energies.


title:
Helicity Analysis of Semileptonic Hyperon Decays Including Lepton Mass
  Effects

abstract:
  Using the helicity method we derive complete formulas for the joint angular
decay distributions occurring in semileptonic hyperon decays including lepton
mass and polarization effects. Compared to the traditional covariant
calculation the helicity method allows one to organize the calculation of the
angular decay distributions in a very compact and efficient way. In the
helicity method the angular analysis is of cascade type, i.e. each decay in the
decay chain is analyzed in the respective rest system of that particle. Such an
approach is ideally suited as input for a Monte Carlo event generation program.
As a specific example we take the decay $\Xi^0 \to \Sigma^+ + l^- +
\bar{\nu}_l$ ($l^-=e^-, \mu^-$) followed by the nonleptonic decay $\Sigma^+ \to
p + \pi^0$ for which we show a few examples of decay distributions which are
generated from a Monte Carlo program based on the formulas presented in this
paper. All the results of this paper are also applicable to the semileptonic
and nonleptonic decays of ground state charm and bottom baryons, and to the
decays of the top quark.


title:
Discussion of the eta to pi^0 gamma gamma decay within a chiral unitary
  approach

abstract:
  We improve the calculations of the $\eta \to \pi^0 \gamma \gamma$ decay
within the context of meson chiral lagrangians. We use a chiral unitary
approach for the meson-meson interaction, thus generating the $a_0(980)$
resonance and fixing the longstanding sign ambiguity on its contribution. This
also allows us to calculate the loops with one vector meson exchange, thus
removing a former source of uncertainty. In addition we ensure the consistency
of the approach with other processes. First, by using vector meson dominance
couplings normalized to agree with radiative vector meson decays. And, second,
by checking the consistency of the calculations with the related $\gamma \gamma
\to \pi^0 \eta$ reaction. We find an $\eta \to \pi^0 \gamma \gamma$ decay width
of $0.47\pm 0.10$ eV, in clear disagreement with published data but in
remarkable agreement with the most recent measurement.


title:
Flavour changing effects on e^+ e^- -> H b \bar{s}, H \bar{b} s in the
  MSSM

abstract:
  Flavour changing effects originating from the exchange of scalar particles in
the processes e^+ e^- -> H b \bar{s}, H \bar{b} s, with H = h^0, H^0, A^0, are
investigated in the Minimal Supersymmetric Standard Model with non-minimal
flavour violation at the one-loop level. The dominating SUSY-QCD contributions
with squark--gluino loops are calculated and discussed. We consider the SUSY
scenario with non-minimal flavour mixing in the down-type squark-mass matrix.
The flavour-changing cross sections are derived, and we discuss the dependence
on the MSSM parameters and the strength of flavour mixing. The values for the
cross section can reach 10^{-4} pb for the production of the heavy Higgs boson
H^0 or A^0, and only 10^{-7} pb for the light Higgs boson h^0. Non-decoupling
behaviour occurs for both h^0, H^0 production in the case of a common heavy
SUSY mass scale.


title: Non-leptonic B-decays in and beyond QCD Factorisation

abstract:
  This thesis examines the non-leptonic B-decays within QCD factorisation and
beyond, to challenge the assumptions and limitations of the method. We analyse
the treatment of the distribution amplitudes of light mesons and present a new
model described by simple physical parameters. The leading twist distribution
amplitudes of light mesons describe the leading non-perturbative hadronic
contributions to exclusive QCD reactions at large energy transfer, for instance
electromagnetic form factors. Importantly, they also enter into the two-body B
decay amplitudes described by QCD factorisation. They cannot be calculated from
first principles and are described by models based on a fixed-order conformal
expansion, which is not always sufficient in phenomenological applications. We
derive new models that are valid to all orders in the conformal expansion and
characterised by a small number of parameters related to experimental
observables.Motivated by the marginal agreement between the QCD factorisation
results with the experimental data, in particular for $B\to\pi\pi$, we
scrutinise the incalculable non-factorisable corrections to charmless
non-leptonic decays. We use the available results on $B\to\pi\pi$ to extract
information about the size and nature of the required non-factorisable
corrections that are needed to reconcile the predictions and data. We find that
the best-fit scenarios do not give reasonable agreement to $2\sigma$ until at
least a 40% non-factorisable contribution is added. Finally we consider the
exclusive $B\to V\gamma$ decays, where we analyse the recently updated
experimental data within QCD factorisation and present constraints on generic
supersymmetric models using the mass insertion approximation.


title:
MSSM Higgs Boson Searches at the Tevatron and the LHC: Impact of
  Different Benchmark Scenarios

abstract:
  The Higgs boson search has shifted from LEP2 to the Tevatron and will
subsequently move to the LHC. The current limits from the Tevatron and the
prospective sensitivities at the LHC are often interpreted in specific MSSM
scenarios. For heavy Higgs boson production and subsequent decay into b \bar b
or tau^+ tau^-, the present Tevatron data allow to set limits in the
M_A-tan_beta plane for small M_A and large tan_beta values. Similar channels
have been explored for the LHC, where the discovery reach extends to higher
values of M_A and smaller tan_beta. Searches for MSSM charged Higgs bosons,
produced in top decays or in association with top quarks, have also been
investigated at the Tevatron and the LHC. We analyze the current Tevatron
limits and prospective LHC sensitivities. We discuss how robust they are with
respect to variations of the other MSSM parameters and possible improvements of
the theoretical predictions for Higgs boson production and decay. It is shown
that the inclusion of supersymmetric radiative corrections to the production
cross sections and decay widths leads to important modifications of the present
limits on the MSSM parameter space. The impact on the region where only the
lightest MSSM Higgs boson can be detected at the LHC is also analyzed. We
propose to extend the existing benchmark scenarios by including additional
values of the higgsino mass parameter mu. This affects only slightly the search
channels for a SM-like Higgs boson, while having a major impact on the searches
for non-standard MSSM Higgs bosons.


title:
The effect of Kaon Condensation on Quark-Antiquark Condensate in Dense
  Matter

abstract:
  Assuming that at sufficiently high densities the constituent quarks become
relevant degrees of freedom, we study within the framework of a chiral quark
model the influence of s-wave $K^-$ condensation on the quark-antiquark
condensates. We find that, in linear density approximation, the presence of a
$K^-$ condensate quenches the $\bar{u}u$ condensate, but that the $\bar{d}d$
condensate remains unaffected up to the chiral order under consideration. We
discuss the implication of the suppressed $\bar{u}u$ condensate for
flavor-dependent chiral symmetry restoration in dense matter


title: Anomalous Drell-Yan asymmetry from hadronic or QCD vacuum effects

abstract:
  The anomalously large cos(2 phi) asymmetry measured in the Drell-Yan process
is discussed. Possible origins of this large deviation from the Lam-Tung
relation are considered with emphasis on the comparison of two particular
proposals: one that suggests it arises from a QCD vacuum effect and one that
suggests it is a hadronic effect. Experimental signatures distinguishing these
effects are discussed.


title: Likelihood scan of the Super-Kamiokande I time series data

abstract:
  In this work a detailed spectral analysis of the time series of the 8B solar
neutrino flux published by the Super-Kamiokande Collaboration is presented,
performed through a likelihood scan approach. Preliminarily a careful review of
the analysis methodology is given, showing that the traditional periodicity
search via the Lomb-Scargle periodogram is a special case of a more general
likelihood based method. Since the data are published together with the
relevant asymmetric errors, it is then shown how the likelihood analysis can be
performed either with or without a prior error averaging. A key point of this
work is the detailed illustration of the mathematical model describing the
statistical properties of the estimated spectra obtained in the various cases,
which is also validated through extensive Monte Carlo computations; the model
includes a calculation for the prediction of the possible alias effects. In the
successive investigation of the data, such a model is used to derive objective,
mathematical predictions which are quantitatively compared with the features
observed in the experimental spectra. This article clearly demonstrates that
the handling of the errors is the origin of the discrepancy between published
null observations and claimed significant periodicity in the same SK-I data
sample. Moreover, the comprehensive likelihood analysis with asymmetric errors
developed in this work provides results which cannot exclude the null
hypothesis of constant rate, even though some indications stemming from the
model at odd with such conclusion point towards the desirability of additional
investigations with alternative methods to shed further light on the
characteristics of the data.


title: Dark Energy and Neutrino CPT Violation

abstract:
  In this paper we study the dynamical CPT violation in the neutrino sector
induced by the dark energy of the Universe. Specifically we consider a dark
energy model where the dark energy scalar derivatively interacts with the
right-handed neutrinos. This type of derivative coupling leads to a
cosmological CPT violation during the evolution of the background field of the
dark energy. We calculate the induced CPT violation of left-handed neutrinos
and find the CPT violation produced in this way is consistent with the present
experimental limit and sensitive to the future neutrino oscillation
experiments, such as the neutrino factory.


title: Earth matter density uncertainty in atmospheric neutrino oscillations

abstract:
  That muon neutrinos $\nu_{\mu}$ oscillating into the mixture of tau neutrinos
$\nu_{\tau}$ and sterile neutrinos $\nu_{s}$ has been studied to explain the
atmospheric $\nu_{\mu}$ disappearance. In this scenario, the effect of Earth
matter is a key to determine the fraction of $\nu_{s}$. Considering that the
Earth matter density has uncertainty and this uncertainty has significant
effects in some neutrino oscillation cases, such as the CP violation in very
long baseline neutrino oscillations and the day-night asymmetry for solar
neutrinos, we study the effects caused by this uncertainty in the above
atmospheric $\nu_{\mu}$ oscillation scenario. We find that this uncertainty
seems to have no significant effects and that the previous fitting results need
not to be modified fortunately.


title:
Masses and electroweak properties of light mesons in the relativistic
  quark model

abstract:
  The masses, pseudoscalar and vector weak decay constants and electromagnetic
form factors of light S-wave mesons are studied in the framework of the
relativistic quark model based on the quasipotential approach. We use the same
model assumptions and parameters as in our previous investigations of heavy
meson and baryon properties. The masses and wave functions of the ground state
and radially excited pi, rho, K, K* and phi mesons, obtained by solving
numerically the relativistic Schroedinger-like equation with the complete
relativistic q bar q potential including both spin-independent and
spin-dependent terms, are presented. Novel relativistic expressions for the
weak decay constants of the pseudoscalar and vector mesons are derived. It is
shown that the intermediate negative-energy quark states give significant
contributions which essentially decrease the decay constants bringing them in
agreement with experimental data. The electromagnetic form factors of the pion,
charged and neutral kaon are calculated in a broad range of the space-like
momentum transfer. The corresponding charge radii are determined. All results
agree well with available experimental data.


title: Nontrivial spacetime topology, CPT violation, and photons

abstract:
  A physical mechanism for CPT violation is reviewed, which relies on chiral
fermions, gauge interactions, and nontrivial spacetime topology. The nontrivial
topology can occur at the very largest scale (e.g., at the "edge" of the
universe) or at the very smallest scale (e.g., from a hypothetical spacetime
foam). The anomalous effective gauge field action includes, most likely, a
CPT-odd Chern-Simons-like term. Two phenomenological photon models with Abelian
Chern-Simons-like terms are discussed.


title: Recent results on saturation and CGC

abstract:
  I discuss recent results on the Color Glass Condensate which is a dense
saturated gluonic state and appears as the universal picture of hadrons or
nuclei at very high energies.


title: Soffer Bound and Transverse Spin Densities from Lattice QCD

abstract:
  Generalized transversity distributions encode essential information on the
internal structure of hadrons related to transversely polarized quarks. Lattice
QCD allows us to compute the lowest moments of these tensor generalized parton
distributions. In this talk, we discuss a first lattice study of the Soffer
bound and show preliminary results for transverse spin densities of quarks in
the nucleon.


title: Lattice computation of the strange quark mass in QCD

abstract:
  We present a determination of the strange quark mass using lattice QCD.
Particular focus is put on the definition and renormalization of the mass. The
latter is done non-perturbatively, using a recursive finite-size scaling
technique. The hadronic regime of QCD, where the kaon mass is used as input of
the calculation, is connected with the perturbative regime, where the strange
quark mass can be translated into the MSbar scheme. A summary plot of the
present lattice computations using dynamical (sea) quarks is included.


title:
Exploring the BWCA (Bino-Wino Co-Annihilation) Scenario for Neutralino
  Dark Matter

abstract:
  In supersymmetric models with non-universal gaugino masses, it is possible to
have opposite-sign SU(2) and U(1) gaugino mass terms. In these models, the
gaugino eigenstates experience little mixing so that the lightest SUSY particle
remains either pure bino or pure wino. The neutralino relic density can only be
brought into accord with the WMAP measured value when bino-wino co-annihilation
(BWCA) acts to enhance the dark matter annihilation rate. We map out parameter
space regions and mass spectra which are characteristic of the BWCA scenario.
Direct and indirect dark matter detection rates are shown to be typically very
low. At collider experiments, the BWCA scenario is typified by a small mass gap
m_{\tilde Z_2}-m_{\tilde Z_1} ~ 20-80 GeV, so that tree level two body decays
of \tilde Z_2 are not allowed. However, in this case the second lightest
neutralino has an enhanced loop decay branching fraction to photons. While the
photonic neutralino decay signature looks difficult to extract at the Fermilab
Tevatron, it should lead to distinctive events at the CERN LHC and at a linear
e^+e^- collider.


title: Supersymmetric Standard Model from the Heterotic String

abstract:
  We present a Z_6 orbifold compactification of the E_8xE_8 heterotic string
which leads to the (supersymmetric) Standard Model gauge group and matter
content. The quarks and leptons appear as three 16-plets of SO(10), whereas the
Higgs fields do not form complete SO(10) multiplets. The model has no exotic
states at low energies and is consistent with gauge coupling unification. The
top quark Yukawa coupling arises from gauge interactions and is of the order of
the gauge couplings, whereas the other Yukawa couplings are suppressed.


title:
Model-Independent Results for SU(3) Violation in Twist-3 Light-Cone
  Distribution Functions

abstract:
  Using chiral symmetry we investigate the leading SU(3) violation in the
complete set of quark twist-3 light-cone distribution functions of the pion,
kaon, and eta. It is shown that terms non-analytic in the quark masses do not
affect the shape, and only appear in the normalization constants. Predictive
power is retained including the leading analytic m_{q} operators. With the
symmetry violating corrections we derive useful model-independent relations
between the distributions of pion, kaon and eta. We also comment on the
calculations of the moments of these distributions using lattice QCD and
light-cone sum rules.


title: Rephasing Invariance and Hierarchy of the CKM Matrix

abstract:
  We identified a set of four rephasing invariant parameters of the CKM matrix.
They are found to exhibit hierarchies in powers of $\lambda^2$, from
$\lambda^2$ to $\lambda^8$. It is shown that, at the present level of accuracy,
only the first three parameters are needed to fit all available data on flavor
physics.


title: Studying Possible Anomalous Top-Quark Couplings at Photon Colliders

abstract:
  Search for new-physics through possible anomalous t tbar gamma, tbW and gamma
gamma H couplings which are generated by SU(2) X U(1) gauge-invariant
dimension-6 effective operators is discussed, using energy and angular
distributions of final charged-lepton/ b-quark in gamma gamma -> t tbar -> l X
/ bX for various beam polarizations. Optimal beam polarizations that minimize
uncertainty in determination of those non-standard couplings are found
performing an optimal-observable analysis.


title: A chromomagnetic mechanism for the X(3872) resonance

abstract:
  The chromomagnetic interaction, with proper account for flavour-symmetry
breaking, is shown to explain the mass and coupling properties of the X(3872)
resonance as a $J^{PC}$ = 1$^{++}$ state consisting of a heavy quark-antiquark
pair and a light one. It is crucial to introduce all the spin-colour
configurations compatible with these quantum numbers and diagonalise the
chromomagnetic interaction in this basis. This approach thus differs from the
molecular picture $D\bar {D}*$ and from the diquark-antidiquark picture.


title:
Sneutrino inflation in Gauss-Bonnet brane-world cosmology, the gravitino
  problem and leptogenesis

abstract:
  We discuss sneutrino inflation in the brane-world scenario. We work in the
Randall-Sundrum type II brane-world, generalized with the introduction of the
Gauss-Bonnet term, a correction to the effective action in string theories. We
find that a viable inflationary model is obtained with a reheating temperature
appropriate to lead to the right baryon asymmetry and render the gravitino safe
for cosmology. In specific realizations we satisfy all the observational
constaints without the unnaturally small Yukawa couplings required in other
related approaches.


title: J/psi suppression

abstract:
  I discuss the current theoretical interpretation of the anomalous J/psi
suppression and their comparison to the most recent experimental data.


title: Photon Neutrino Scattering in Non-Commutative Space

abstract:
  We extend the non-commutative standard model based on the minimal
$SU(3)\times SU(2)\times U(1)$ gauge group to include the interaction of photon
with neutrino. We show that, in the gauge invariant manner, only the right
handed neutrino can directly couple to the photon. Consequently, we obtain the
Feynman rule for the $\gamma\nu\bar\nu$-vertex which does not exist in the
minimal extension of non-commutative standard model (mNCSM). We calculate the
amplitude for $\gamma\nu\to\gamma\nu$ in both the nonminimal non-commutative
standard model (nmNCSM) and the extended version of mNCSM. The obtained cross
section grows in the center of mass frame, respectively, as
$(\theta_{NC})^2{M}_Z^{-4}E^6$ and $(\theta_{NC})^4E^6$ which can exceed the
cross section for $\gamma\nu\to\gamma\gamma\nu$ and $\gamma\nu\to\gamma\nu$ in
the high energy limit in the commutative space.


title: Double charm hadrons revisited

abstract:
  The dynamics of two heavy quarks inside the same hadron is probed against the
double charm baryon results of SELEX. This can be seen as a part of the
mechanism to bind tetraquarks with two heavy quarks and two light antiquarks.
In the framework of potential models, it is possible to test the role of
different effects: relativistic corrections, confinement, hyperfine forces,
etc. It is conjectured that an additional interaction rescaled from the
nucleon--nucleon system and acting between light quarks only, can help in
bringing extra, possibly required, binding in tetraquarks.


title:
B decays into pion-pion-kaon and into kaon-antikaon-kaon: long distance
  and final-state effects

abstract:
  The interplay of strong and weak decay amplitudes for B -> pion-pion-kaon and
B -> kaon-antikaon-kaon, with the pion-pion and kaon-antikaon pairs interacting
in isospin-0 S-wave, is analyzed for pion-pion effective mass from threshold to
1.2 GeV. To improve agreement with experiment of a factorization approach with
some QCD corrections, addition of long-distance contributions, called charming
penguins is necessary.


title:
Leading-particle suppression and surface emission in nucleus-nucleus
  collisions

abstract:
  After a short summary of the predictions of the Parton Quenching Model (PQM)
for the nuclear modification factor and its centrality dependence in Au-Au
collisions at RHIC, we concentrate on back-to-back jet-like correlations at
high transverse momentum. We illustrate how this probe is biased by the surface
effect.


title:
Effective theoretical approach of Gauge-Higgs unification model and its
  phenomenological applications

abstract:
  We derive the low energy effective theory of Gauge-Higgs unification (GHU)
models in the usual four dimensional framework. We find that the theories are
described by only the zero-modes with a particular renormalization condition in
which essential informations about GHU models are included. We call this
condition ``Gauge-Higgs condition'' in this letter. In other wards, we can
describe the low energy theory as the SM with this condition if GHU is a model
as the UV completion of the Standard Model. This approach will be a powerful
tool to construct realistic models for GHU and to investigate their low energy
phenomena.


title: Diffraction for non-believers

abstract:
  Diffractive reactions involving a hard scale can be understood in terms of
quarks and gluons. These reactions have become a valuable tool for
investigating the low-x structure of the proton and the behavior of QCD in the
high-density regime, and they may provide a clean environment to study or even
discover the Higgs boson at the LHC. In this paper we give a brief introduction
to the description of diffraction in QCD. We focus on key features studied in
ep collisions at HERA and outline challenges for understanding diffractive
interactions at the LHC.


title: Effects of Littlest Higgs model in rare D meson decays

abstract:
  A tree-level flavor changing neutral current in the up-like quark sector
appears in one of the variations of the Littlest Higgs model. We investigate
the effects of this coupling in the D+ -> pi+ l+ l- and D0 -> rho0 l+ l-
decays, which are the most appropriate candidates for the experimental studies.
However, the effects are found to be too small to be observed in the current
and the foreseen experimental facilities. These decays are still dominated by
the standard model long-distance contributions, which are reevaluated based on
the new experimental input.


title:
Anomalous internal pair conversion signaling elusive light neutral
  particles

abstract:
  In this paper we report on a systematic search for a neutral boson in the
mass range between 5 and 15 MeV/c$^{2}$ in the decay of highly excited nuclei.
Its signature is found a deviation in the angular correlation of the $e^+e^-$
pairs from conventional internal pair conversion (IPC) resulting from of its
two-body decay kinematics. With an $e^{+}e^{-}$ pair-spectrometer, a number of
transitions has been investigated in the
  ${\alpha}$--nuclei $^{8}$Be, $^{12}$C and $^{16}$O, following light ion
induced reactions at low bombarding energies, first at IKF in Frankfurt and
during the last years at ATOMKI in Debrecen. Startlingly, in all isoscalar
transitions excess $e^{+}e^{-}$ pairs are found at large angles with branching
ratios with respect to the total yield ranging from 10$^{-2}$ to 10$^{-6}$. If
these deviations are all related to the two-body decay of an $X$-boson, this
observation implies plural $X$-bosons. An analysis of all angular spectra with
a boson search program, yields a pandemonium of more than ten candidate bosons.


title: Charmless and Strangless Nonleptonic B Decays

abstract:
  Decay rates of the B-meson are studied through charmless and strangless
transitions into pi, rho, omega and gamma systems. The important features of
these modes are their clean signatures. The CLEO II collaboration has recently
reported the value BR(B^0 --> pi^+ pi^-) = (1.3_{-0.6}^{+0.8} +/- 0.2)x10^{-5}.
This value test our approach to nonleptonic B-decays within the standard model
(SM). Since B --> gamma gamma is far beyond our experimental reach, we believe
that the correct determination of the order of magnitude ~10^{-10} for BR(B -->
gamma gamma) provides the most reliable value needed at this moment. The most
recent experimental report by the CLEO collaboration on BR(B --> K* gamma) =
(4.5 +/- 1.5 +/- 0.9)x10^{-5} represents a confirmation of our SM prediction
for the B --> K* gamma decay. This experimental result, despite of its great
importance for the SM and the physics beyond the SM, enables us to predict the
value BR(B --> rho gamma) ~ (3.5 +/- 3.3)x10^{-6}.


title: On the Nonperturbative Foundations of the Dipole Picture

abstract:
  Starting from a genuinely nonperturbative formulation of photon-proton
scattering we discuss which approximations and assumptions are required to
obtain the dipole picture of high energy scattering.


title: Instabilities driven equilibration of the quark-gluon plasma

abstract:
  Due to anisotropic momentum distributions the parton system produced at the
early stage of relativistic heavy-ion collisions is unstable with respect to
the magnetic plasma modes. The instabilities isotropize the system and thus
speed up the process of its equilibration. The whole scenario of the
instabilities driven isotropization is reviewed.


title:
Non-Perturbative Gluon pair production from a Constant Chromo-Electric
  Field via the Schwinger Mechanism in Arbitrary Gauge

abstract:
  We study the non-perturbative production of gluon pairs from a constant SU(3)
chromo-electric background field via the Schwinger mechanism. We fix the
covariant background gauge with an arbitrary gauge parameter \alpha. We
determine the transverse momentum distribution of the gluons, as well as the
total probability of creating pairs per unit space time volume. We find that
the result is independent of the covariant gauge parameter \alpha used to
define arbitrary covariant background gauges. We find that our non-perturbative
result is both gauge invariant and gauge parameter \alpha independent.


title:
Model independent method for determination of the DIS structure of free
  neutron

abstract:
  We present a model independent procedure for extracting deep-inelastic
structure function of "free'' neutron from the electron - deuteron scattering
with protons produced in the target fragmentation region of the reaction. This
procedure is based on the extrapolation of t, which describes the invariant
momentum transfered to the proton, to the unphysical region corresponding to
the mass of the struck neutron. We demonstrate that the impulse approximation
diagram of the reaction has a pole at this limit with a residue being
proportional to the "free" neutron structure function. The method is analogous
to that of Chew and Low for extraction of the ``free'' pion-pion and
neutron-neutron cross sections from p(pion,p)X and d(n,n)pn reactions
respectively. We demonstrate that in the extrapolation the final state
interaction amplitudes are smooth functions of $t$ and have negligible
contribution in the extracted ``free'' nucleon structure function. We also
estimate the range of the recoil nucleon momenta which could be used for
successful extrapolation procedure.


title:
Unified Theory of Elementary Particles -- in Search of Extra Dimensions
  -----

abstract:
  Even though the unified theory of electroweak interactions is very successful
at low energies, there remains one part to be confirmed. It is the sector
involving Higgs particles. Those Higgs particles are expected to be discovered.
It has been shown recently that Higgs particles can be viewed as gauge fields
in higher dimensional gauge theory. The mass of a Higgs particle and its
coupling to other particles are constrained by the gauge principle. In this
scenario the mass of a Higgs particle is predicted to be in the range of 120
GeV - 290 GeV, exactly in the range explored at LHC, provided that the extra
dimension is curved and warped. Thus physics of extra dimensions can manifest
itself in collider experiments at the LHC energies.


title: Indications of a Pseudogap in the Nambu Jona-Lasinio model

abstract:
  The survival of \bar q q bound states at temperatures higher than the chiral
restoration temperature, T_c, recently observed in lattice QCD, is discussed in
the framework of the Nambu Jona-Lasinio model. The perturbative determination
of the spectral function provides an indication of a pseudogap phase above T_c.


title:
Study of the SU(3)_c X SU(3)_L X U(1)_X model with the minimal scalar
  sector

abstract:
  A study of the three-family local gauge group SU(3)_c X SU(3)_L X U(1)_X with
right-handed neutrinos is carried out. We use the minimal scalar sector able to
break the symmetry in a proper way and produce, at the same time, masses for
the fermion fields. We embed the structure into a simple gauge group and, by
using experimental results from the CERN LEP, SLAC linear collider and atomic
parity violation data, we also constraint relevant parameters for the new
neutral and charged currents. We discuss the mass spectrum for the gauge boson
sector and for the spin 1/2 particles. With the use of discrete symmetries and
the introduction of extra scalar fields, a consistent mass spectrum could be
constructed.


title:
Transparency, Mixing and Reflection of Initial Flows in Relativistic
  Nuclear Collisions

abstract:
  We propose to use the hadron number fluctuations in the limited momentum
regions to study the evolution of initial flows in high energy nuclear
collisions. In this method by a proper preparation of a collision sample the
projectile and target initial flows are marked in fluctuations in the number of
colliding nucleons. We discuss three limiting cases of the evolution of flows,
transparency, mixing and reflection, and present for them quantitative
predictions obtained within several models. Finally, we apply the method to the
NA49 results on fluctuations of the negatively charged hadron multiplicity in
Pb+Pb interactions at 158A GeV and conclude that the data favor a
hydrodynamical model with a significant degree of mixing of the initial flows
at the early stage of collisions.


title: Baryon and lepton numbers in two scenarios of leptogenesis

abstract:
  Baryon and lepton numbers of the Universe in leptogenesis with Dirac neutrino
and leptogenesis with Majorana neutrino scenarios are considered. It is shown
that despite quite different features of Dirac and Majorana fermions both
scenarios yield the same relation among the initial lepton and the final baryon
asymmetries. Moreover right-handed neutrinos in the leptogenesis with Dirac
neutrino scenario have very little impact on the effective number of
relativistic degrees of freedom, constrained by BBN. Thus the two scenarios are
similar from the cosmological point of view. It is also pointed out that in
thermal equilibrium the 3B+L sum is zero for left-handed fermions.


title: Survival Probability of Large Rapidity Gaps

abstract:
  Our presentation centers on the consequences of s-channel unitarity,
manifested by soft re-scatterings of the spectator partons in a high energy
diffractive process, focusing on the calculations of gap survival
probabilities. Our emphasis is on recent estimates relevant to exclusive
diffractive Higgs production at the LHC. To this end, we critically re-examine
the comparison of the theoretical estimates of large rapidity gap hard di-jets
with the measured data, and remark on the difficulties in the interpretation of
HERA hard di-jet photoproduction.


title:
Anti-Lambda polarization in high energy pp collisions with polarized
  beam

abstract:
  We study the polarization of the anti-Lambda particle in polarized high
energy pp collisions at large transverse momenta. The anti-Lambda polarization
is found to be sensitive to the polarization of the anti-strange sea of the
nucleon. We make predictions using different parameterizations of the polarized
quark distribution functions. The results show that the measurement of
longitudinal anti-Lambda polarization can distinguish different
parameterizations, and that similar measurements in the transversely polarized
case can give some insights into the transversity distribution of the
anti-strange sea of nucleon.


title:
Constraints on SUSY Seesaw Parameters from Leptogenesis and Lepton
  Flavor Violation

abstract:
  We study the constraints on a minimal supersymmetric seesaw model imposed by
neutrino data, charged lepton flavor violation, thermal leptogenesis and
perturbativity. We show that it is possible to constrain the three heavy
Majorana neutrino masses as well as the complex Yukawa coupling matrix. Our
results provide a first step towards a seesaw benchmark model for further
phenomenological studies and model building.


title:
Scalar Correlator at O(alpha_s^4), Higgs Decay into b-quarks and Bounds
  on the Light Quark Masses

abstract:
  We compute, for the first time, the absorptive part of the massless
correlator of two quark scalar currents in five loops. As physical applications
we consider the O(alpha_s^4) corrections to the decay rate of the Standard
Model Higgs boson into quarks, as well as the constraints on the strange quark
mass following from QCD sum rules.


title:
Electroweak Physics at the Tevatron and LHC: Theoretical Status and
  Perspectives

abstract:
  I review the status of theoretical calculations relevant for electroweak
physics at the Tevatron and LHC and discuss future directions. I also give a
brief overview of current electroweak data and discuss future expectations.


title: On the Structure of Leptonic Families and Currents of the Vector Nature

abstract:
  Any of neutrinos similarly to a kind of charged lepton has a non-zero mass
responsible as well as for its Coulomb behavior. Such a neutrino can possess
both electric charge and vector dipole moment. Their form factors appear, for
example, at the polarized neutrino scattering in the field of a spinless
nucleus. We derive an equation which relates the masses to a ratio of Dirac and
Pauli form factors of each lepton and its neutrino. A new left-right
antisymmetric theory of force unification based on a gauge group $SU(2)_{L}$
$\otimes$ $SU(2)_{R}$ $\otimes$ $U(1)$ is suggested. In this theory, the
leptons and their neutrinos are united in families not only of the left-handed
$SU(2)_{L}$-doublets, but also of the right-handed $SU(2)_{R}$-doublets.
Thereby, it predicts the existence in nature of the left (right) dileptons and
paradileptons. A formation of any of them is responsible for the legality of
conservation of charge, lepton flavors and full lepton number. Therefore, each
of the earlier measured processes originated at the conservation both of summed
electric charge and of any lepton number may serve as the first confirmation of
a given theory in which the mass, charge and vector dipole moment of the
neutrino are proportional, respectively, to the mass, charge and vector dipole
moment of a lepton of the same family.


title:
Deep inelastic scattering near the endpoint in soft-collinear effective
  theory

abstract:
  We apply the soft-collinear effective theory (SCET) to deep inelastic
scattering near the endpoint region. The forward scattering amplitude, and the
structure functions are shown to factorize as a convolution of the Wilson
coefficients, the jet functions, the parton distribution functions. The
behavior of the parton distribution functions near the endpoint region is
considered. It turns out that it evolves with the Altarelli-Parisi kernel even
in the endpoint region, and the parton distribution function can be factorized
further into a collinear part and the soft Wilson line. The factorized form for
the structure functions is obtained by the two-step matching, and the radiative
corrections or the evolution for each factorized part can be computed in
perturbation theory. We present the radiative corrections of each factorized
part to leading order in alpha_s, including the zero-bin subtraction for the
collinear part.


title: Phase transition in the Higgs model of scalar dyons

abstract:
  In the present paper we investigate the phase transition
"Coulomb--confinement" in the Higgs model of abelian scalar dyons -- particles
having both, electric $e$ and magnetic $g$, charges. It is shown that by dual
symmetry this theory is equivalent to scalar fields with the effective squared
electric charge e^{*2}=e^2+g^2. But the Dirac relation distinguishes the
electric and magnetic charges of dyons. The following phase transition
couplings are obtained in the one--loop approximation:
\alpha_{crit}=e^2_{crit}/4\pi\approx 0.19,
\tilde\alpha_{crit}=g^2_{crit}/4\pi\approx 1.29 and \alpha^*_{crit}\approx
1.48.


title: Massive Neutrinos in Cosmology

abstract:
  The roles of massive neutrinos in cosmology -- in leptogenesis and in the
evolution of mass density fluctuations -- are reviewed. Emphasis is given to
the limit on neutrino mass from these considerations.


title: Extraction of the Skewing factor from the DIS/DVCS ratio

abstract:
  The skewing factor, defined as the ratio of the imaginary parts of the
amplitudes $Im A(\gamma^* p \to \gamma^* p)/Im A(\gamma^* p \to \gamma p)$ is
extracted for the first time from the data using recent Deeply Virtual Compton
Scattering (DVCS) and the inclusive inelastic cross section measurements at
DESY-HERA. The results values are compared to theoretical predictions for NLO
QCD and the colour dipole approach.


title:
Sum rules for leading and subleading form factors in Heavy Quark
  Effective Theory using the non-forward amplitude

abstract:
  Within the OPE, we the new sum rules in Heavy Quark Effective Theory in the
heavy quark limit and at order 1/m_Q, using the non-forward amplitude. In
particular, we obtain new sum rules involving the elastic subleading form
factors chi_i(w) (i = 1,2, 3) at order 1/m_Q that originate from the L_kin and
L_mag perturbations of the Lagrangian. To the sum rules contribute only the
same intermediate states (j^P, J^P) = ((1/2)^-, 1^-), ((3/2)^-, 1^-) that enter
in the 1/m_Q^2 corrections of the axial form factor h_(A_1)(w) at zero recoil.
This allows to obtain a lower bound on -delta_(1/m^2)^(A_1) in terms of the
chi_i(w) and the shape of the elastic IW function xi(w). An important
theoretical implication is that chi'_1(1), chi_2(1) and chi'_3(1) (chi_1(1) =
chi_3(1) = 0 from Luke theorem) must vanish when the slope and the curvature
attain their lowest values rho^2->3/4, sigma^2->15/16. These constraints should
be taken into account in the exclusive determination of |V_(cb)|.


title:
Statistically improved Analysis of Neutrino Oscillation Data with the
  latest KamLAND result

abstract:
  We present an updated analysis of all available solar and reactor neutrino
data, emphasizing in particular the totality of the KamLAND (314d live time)
results and including for the first time the solar $SNO$ (391d live time, phase
II NaCl-enhanced) spectrum data. As a novelty of the statistical analysis, we
study the variability of the KamLand results with respect the use of diverse
statistics. A new statistic, not used before is proposed. Moreover, in the
analysis of the SNO spectrum a novel technique is used in order to include full
correlated errors among bins. Combining all data, we obtain the following
best-fit parameters: we determine individual neutrino mixing parameters and
their errors $ \Delta m^2= 8.2\pm 0.08\times 10^{-5} \eV^2,\quad \tan^2\theta=
0.50^{+0.12}_{-0.07}.$ The impact of these results is discussed. We also
estimate the individual elements of the neutrino mass matrix. In the framework
of three neutrino oscillations we obtain the mass matrix: \begin{eqnarray}M&=&
eV \pmatrix{1.0+ 4.0\pm 3.2 10^{-5}& 4.2\pm 3.2 10^{-5} &-13.5\pm 14.0 10^{-5}
\cr 4.2\pm 3.2 10^{-5}& 1.0+4.3\pm 3.5 10^{-5} &-13.5\pm 14.5 10^{-5} \cr
13.5\pm 14.0 10^{-5}& -13.5\pm 14.5 10^{-5} &1.0+100.0\pm 30.0\
10^{-5}}.\end{eqnarray}


title:
The Higgs Sector and electron electric dipole moment in next-to-minimal
  supersymmetry with explicit CP violation

abstract:
  We study the explicit CP violation of the Higgs sector in the
next--to--minimal supersymmetric model with a gauge singlet Higgs field. Our
numerical predictions show that electric dipole moment of electron lies around
the present experimental upper limits. The mass of the lightest Higgs boson is
quite sensitive to the CP violating phases in the theory. It is observed that
as the vacuum expectation value of the singlet gets higher values, CP violation
increases.


title: The soft and the hard pomerons in hadron elastic scattering at small t

abstract:
  We consider simple-pole descriptions of soft elastic scattering for pp, pbar
p, pi+ p, pi- p, K+ p and K- p. We work at t and s small enough for
rescatterings to be neglected, and allow for the presence of a hard pomeron.
After building and discussing an exhaustive dataset, we show that simple poles
provide an excellent description of the data in the region - 0.5 GeV^2 < t <
-0.1 GeV^2, 6 GeV<sqrt(s)< 63 GeV. We show that new form factors have to be
used, and get information on the trajectories of the soft and hard pomerons.


title: High energy scattering in QCD: dipole approach with Pomeron loops

abstract:
  This is the talk given at ``Gribov-75 Memorial Workshop on Quarks, Hadrons,
and Strong Interactions", May 22-24, 2005, Budapest. Hungary. In this talk we
discuss the BFKL Pomeron Calculus and its interrelation with thecolour dipole
approach. The two key problems we consider are the probabilistic interpretation
of the BFKL Pomeron Calculus and the possiblescenario for the asymptotic
behaviour of the scattering amplitude at high energyin QCD.


title: Generation mixing phenomena for leptons in $e^+e^-$ collisions

abstract:
  We discuss the possibility of measuring the generation mixing for the leptons
in $e^+e^-$ collision experiments within the framework of the supersymmetric
standard model.


title: $\eta$ and $\eta'$ decays and what can we learn from them?

abstract:
  In this talk a short overview of $\eta$ and $\eta'$ decays is given with an
emphasis on what can be learned for the strong interaction from them. The talk
consists of a short introduction to ChPT, a discussion of $\eta\to3\pi$ beyond
$p^4$ and some of the physics involved in $\eta'\to\eta\pi\pi,3\pi$ as well as
an overview of anomalous processes.


title:
Asymptotic behavior of nucleon electromagnetic form factors in time-like
  region

abstract:
  We study the asymptotic behavior of the ratio of Pauli and Dirac
electromagnetic nucleon form factors, $F_2/F_1$, in time-like region for
different parametrizations built for the space-like region. We investigate how
fast the ratio $F_2/F_1$ approaches the asymptotic limits according to the
Phragm\`en-Lindel\"of theorem. We show that the QCD-inspired logarithmic
behavior of this ratio results in very far asymptotics, experimentally
unachievable. This is also confirmed by the normal component of the nucleon
polarization, $P_y$, in $e^++e^-\to N+\bar{N}$ (in collisions of unpolarized
leptons), which is a very interesting observable, with respect to this theorem.
Finally we observe that the 1/Q parametrization of $F_2/F_1$ contradicts this
theorem.


title: Neutrino mass matrices, texture zeros, and family symmetries

abstract:
  We demonstrate that Abelian family symmetries allow one to enforce texture
zeros in arbitrary entries of the fermion mass matrices. Placing zeros in any
number of elements of all occurring mass matrices can be done with two
alternative methods; one of them utilizes the group Z_n with n sufficiently
high. Concentrating on the lepton sector and on neutrino masses, we discuss the
methods in the case of seesaw models and scalar triplet models. As an
illustration, we present an example for each type of model.


title: Looking for CP violation in B -> tau+tau- decays

abstract:
  In supersymmetry with large tan(beta) the decays B0(B0bar) -> l+l- are
dominated by the scalar and pseudoscalar Higgs penguin diagrams leading to
strong enhancement of leptonic decay rates with potentially large CP
asymmetries in the tau+tau- decay modes measurable in BELLE or BaBar
experiments. The TAUOLA tau-lepton decay library supplemented by its universal
interface can efficiently be used to search for B0(B0bar) -> tau+tau- decays,
and to investigate how the CP asymmetry is reflected in realistic experimental
observables.


title: Chern-Simons and Winding Number in a Tachyonic Electroweak Transition

abstract:
  We investigate the development of winding number and Chern-Simons number in a
tachyonic transition in the SU(2) Higgs model, motivated by the scenario of
cold electroweak baryogenesis. We find that localized configurations with
approximately half-integer winding number, dubbed half-knots, play an important
role in this process. When the Chern-Simons number adjusts locally to the
winding number, the half-knots can stabilize and acquire half-integer
Chern-Simons number as well. We present two examples from numerical
simulations: one half-knot that stabilizes early and one that gives rise to a
late sphaleron transition. We also study the winding number distribution after
the transition and present new results on the development of the Chern-Simons
susceptibility.


title: Parity Doubling and SU(2)_L x SU(2)_R Restoration in the Hadron Spectrum

abstract:
  We construct the most general nonlinear representation of chiral SU(2)_L x
SU(2)_R broken down spontaneously to the isospin SU(2), on a pair of hadrons of
same spin and isospin and opposite parity. We show that any such representation
is equivalent, through a hadron field transformation, to two irreducible
representations on two hadrons of opposite parity with different masses and
axial couplings. This implies that chiral symmetry realized in the
Nambu-Goldstone mode does not predict the existence of degenerate multiplets of
hadrons of opposite parity nor any relations between their couplings or masses.


title: Probing Composite Gravity in Colliders

abstract:
  We explore scenarios in which the graviton is not a fundamental degree of
freedom at short distances but merely emerges as an effective degree of freedom
at long distances. In general, the scale of such graviton `compositeness',
Lambda_g, can only be probed by measuring gravitational forces at short
distances, which becomes increasingly difficult and eventually impossible as
the distance is reduced. Here, however, we point out that if supersymmetry is
an underlying symmetry, the gravitino can be used as an alternative probe to
place a limit on Lambda_g in a collider environment, by demonstrating that
there is a model-independent relation, Lambda_g > m_{3/2}. In other words, the
gravitino knows that gravity is standard at least down to its Compton
wavelength, so this can also be viewed as a test of general relativity possible
at very short distances. If composite gravity is found first at some Lambda_g,
this would imply a model-independent upper bound on m_{3/2}.


title: Coulomb energy and gluon distribution in the presence of static sources

abstract:
  We compute the energy of the ground state and a low lying excitation of the
gluonic field in the presence of static quark -anti-quark ($\qq$) sources. We
show that for separation between the sources less then a few fm the gluonic
ground state of the static $\qq$ system can be well described in terms of a
mean field wave functional with the excited states corresponding to a single
quasi-particle excitation of the gluon field. We also discuss the role of many
particle excitations relevant for large separation between sources.


title: 3-3-1 Models at Electroweak Scale

abstract:
  We show that in 3-3-1 models there exist a natural relation among the
$SU(3)_L$ coupling constant $g$, the electroweak mixing angle $\theta_W$, the
mass of the $W$, and one of the vacuum expectation values, which implies that
those models can be realized at low energy scales and, in particular, even at
the electroweak scale. So that, being that symmetries realized in Nature, new
physics may be really just around the corner.


title: Single-spin asymmetries and Qiu-Sterman effect(s)

abstract:
  I discuss the relation between the Qiu-Sterman effects on one hand and the
Collins, Sivers and Boer-Mulders effects on the other hand. It was suggested
before that some of these effects are in fact the same, thus providing
interesting connections between transverse-momentum dependent twist-2 functions
and collinear twist-3 functions. Here I propose an alternative way to reach
similar conclusions.


title: 1^{-+}\pi_{1}(1400) cannot be hybrid meson

abstract:
  We expose arguments concerning the \pi_{1}(1400) observed decaying into
\eta\pi and claimed to be an exotic meson. We conclude that this object cannot
be a qqbar-g hybrid meson.


title: The chiral logs of the K -> pi pi amplitude

abstract:
  I calculate the leading logarithmic contributions up to two-loop order of the
octet part of the K -> pi pi amplitude. This sector of the weak chiral
Lagrangian is believed to be the main source of the enhancement of the I=0
relative to the I=2 K -> pi pi amplitude, the so-called Delta I = 1/2 rule. I
discuss the procedure of chiral extrapolations of lattice data specific to K ->
pi pi decays and study the implication of the present calculation on these
numerically. The latter reinforces the fact that one has to expect a large
enhancement of the I=0 part of the amplitude due to re-scattering effects
between the three mesons.


title:
Electroweak corrections and anomalous triple gauge-boson couplings in WW
  and WZ production at the LHC

abstract:
  We have analysed the production of WW and WZ vector-boson pairs at the LHC.
These processes give rise to four-fermion final states, and are particularly
sensitive to possible non-standard trilinear gauge-boson couplings. We have
studied the interplay between the influence of these anomalous couplings and
the effect of the complete logarithmic electroweak O(\alpha) corrections.
Radiative corrections to the Standard Model processes in double-pole
approximation and non-standard terms due to trilinear couplings are implemented
into a Monte Carlo program for p p -> 4f (+\gamma) with final states involving
four or two charged leptons. We numerically investigate purely leptonic final
states and find that electroweak corrections can fake new-physics signals,
modifying the observables by the same amount and shape, in kinematical regions
of statistical significance.


title: On the Energy Dependence of DIS in the Diffraction Region of Low X

abstract:
  The energy dependence of the virtual photoabsorption cross section in deep
inelastic scattering (DIS) at low $x = Q^2/W^2 < 0.1$ may be described in terms
of the saturation scale that in our approach depends on the energy,
$\Lambda^2_{sat} = \Lambda^2_{sat} (W^2)$. We briefly summarize our recent
findings that allow us to predict the exponent $C_2$ of $\Lambda^2_{sat} (W^2)
\sim (W^2)^{C_2}$ in agreement with the previous result obtained from fitting
the experimental data. The exponent $C_2$ depending on the relative magnitude
of the longitudinal and transverse contribution to the structure function,
direct measurements of the longitudinal part are urgently needed.


title: Vector Meson Dominance

abstract:
  Historically vector-meson physics arose along two different paths to be
reviewed in Sections 1 and 2. In Section 3, the phenomenological consequences
will be discussed with an emphasis on those aspects of the subject matter
relevant in present-day discussions on deep inelastic scattering in the
diffraction region of low values of the Bjorken variable.


title: The Energy Dependence of the Saturation Scale

abstract:
  At low $x \cong Q^2/W^2 << 1$, in deep inelastic scattering, the photon
fluctuates into a $q \bar q$ vector state that interacts via two gluons with
the proton. The energy dependence is determined by the saturation scale, in our
approach given by $\Lambda^2_{sat} (W^2) \sim (W^2)^{C_2}$. Imposing DGLAP
evolution, we find $C_2^{theory} = 0.27$ in agreement with the
model-independent analysis of the HERA data. Different values of the exponent
$C_2$ are correlated with different ratios of the longitudinal to transverse
structure function. This stresses the need for experiments to separate
longitudinal and transverse contributions in deep inelastic scattering.


title:
Energy and system size dependence of chemical freeze-out in relativistic
  nuclear collisions

abstract:
  We present a detailed study of chemical freeze-out in p-p, C-C, Si-Si and
Pb-Pb collisions at beam momenta of 158A GeV as well as Pb-Pb collisions at
beam momenta of 20A, 30A, 40A and 80A GeV. By analyzing hadronic multiplicities
within the statistical hadronization model, we have studied the parameters of
the source as a function of the number of the participating nucleons and the
beam energy. We observe a nice smooth behaviour of temperature, baryon chemical
potential and strangeness under-saturation parameter as a function of energy
and nucleus size. Interpolating formulas are provided which allow to predict
the chemical freeze-out parameters in central collisions at centre-of-mass
energies > 4.5 GeV and for any colliding ions. Specific discrepancies between
data and model emerge in particle ratios in Pb-Pb collisions at SPS between 20A
and 40A GeV of beam energy which cannot be accounted for in the considered
model schemes.


title:
Effects of Environment Dependence of Neutrino Mass versus Solar and
  Reactor Neutrino Data

abstract:
  In this work we study the phenomenological consequences of the environment
dependence of neutrino mass on solar and reactor neutrino phenomenology. Such
dependence can be induced, for example, by Yukawa interactions with a light
scalar particle which couples to neutrinos and matter and it is expected, among
others, in mass varying neutrino scenarios. Under the assumption of one mass
scale dominance, we perform a global analysis of solar and KamLAND neutrino
data which depends on 4 parameters: the two standard oscillation parameters,
Delta m^2 and tan^2(theta), and two new coefficients, which parameterize the
environment dependence of the neutrino mass. We find that, generically, the
inclusion of the environment dependent terms does not lead to a very
statistically significant improvement on the description of the data in the
most favoured MSW LMA (or LMA-I) region. It does, however, substantially
improve the fit in the high-Delta m^2 LMA (or LMA-II) region which can be
allowed at 98.9% CL. Conversely the analysis allow us to place stringent
constraints on the size of the environment dependence terms, which can be
translated on a bound on the product of the effective neutrino-scalar
(lambda^\nu) and matter-scalar (lambda^N) Yukawa couplings, as a function of
the scalar field mass (m_S) in these models.


title: Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions

abstract:
  One of the most remarkable results to emerge from heavy-ion collisions over
the past two decades is the striking regularity shown by particle yields at all
energies. This has led to several very successful proposals describing particle
yields over a very wide range of beam energies, reaching from 1 A GeV up to 200
A GeV, using only one or two parameters. A systematic comparison of these
proposals is presented here. The conditions of fixed energy per particle,
baryon+anti-baryon density, normalized entropy density as well as percolation
model are investigated. The results are compared with the most recent chemical
freeze-out parameters obtained in the thermal-statistical analysis of particle
yields. The sensitivity and dependence of the results on parameters is analyzed
and discussed. It is shown that in the energy range above the top AGS energy,
within present accuracies, all chemical freeze-out criteria give a fairly good
description of the particle yields. However, the low energy heavy-ion data
favor the constant energy per particle as a unified condition of chemical
particle freeze-out. This condition also shows the weakest sensitivity on model
assumptions and parameters.


title: Remarks on Diffractive Production of the Higgs Boson

abstract:
  Central diffractive production of the Higgs boson has recently received much
attention as a potentially interesting production mode at the LHC. We shall
review some of the wishes and realities encountered in this field. Theoretical
open problems of diffractive dynamics are involved in making accurate
predictions for the LHC, among which the most crucial is understanding
factorization breaking in hard diffraction.


title:
On a new unitarization scheme inspired by Dalitz and Tuan applied to
  meson-meson and meson-baryon scattering

abstract:
  A new crossing symmetric unitarization scheme conveniently applied to
meson-meson and meson-baryon scattering amplitudes is shortly proposed which
can be not only used by theoreticians to unitarize arbitrary theoretical
reaction amplitudes resulting from phenomenological Lagrangeans for mesons and
baryons, yet also by experimentalists to generate realistic unitary fitting
formulae for meson-meson and meson-baryon scattering observables sharing on one
hand all the features of the underlying theoretical amplitudes, on the other
hand allowing direct comparison to these amplitudes. The new unitarization
scheme has been inspired by the Dalitz and Tuan representation, the basic
ansatz of which is that "... the phases caused by different sources add ..."
(using the words of B.S. Zou, D.V. Bugg, Phys. Rev. D 50 (1994) 591).


title: Flat-Directions in Grand Unification With $U(1)_R$ Symmetry

abstract:
  It is shown that in SO(10) and SU(5) models having a $U(1)_R$ symmetry, the
requirement of breaking the unified group to the Standard Model leads to flat
directions in the scalar potential. These can lead to a ``cosmological modulus
problem". This is relevant to grand unified models of inflation, where $U(1)_R$
symmetries are often used to insure the flatness of the inflaton potential. A
way that the modulus problem might be avoided is discussed.


title:
Shape-function independent relations of charmless inclusive B-decay
  spectra

abstract:
  A leading-power factorization formula for weight functions relating the B to
Xs gamma photon spectrum to arbitrary partial decay rates in B to Xu l nu is
derived. These weight functions are independent of the hadronic shape function
and allow for the determination of V_{ub} in a model-independent way. We
calculate the weight function in renormalization-group improved perturbation
theory to complete next-to-next-to leading order at the jet scale mu_i^2 ~ m_b
Lambda_{QCD} and to next-to leading order at the hard scale mu_h ~ m_b.
First-order power corrections are also included, where a model-dependence
enters via the appearance of subleading hadronic shape functions.


title: Hierarchical Mass Structure of Fermions in Warped Extra Dimension

abstract:
  The warped bulk standard model has been studied in the Randall-Sundrum
background on $S^1/\Z\times\Z'$ interval with the bulk gauge symmetry
$SU(3)\times SU(2)_L\times SU(2)_R\times U(1)_{B-L}$. With the assumption of no
large cancellation between the fermion flavor mixing matrices, we present a
simple analytic method to determine the bulk masses of standard model fermions
in the almost universal bulk Yukawa coupling model. We also predict $U_{e3}$
element of MNS matrix to be near the experimental upper bound when the neutrino
masses are of Dirac type.


title: Soft CP violation in K-meson systems

abstract:
  We consider a model with soft CP violation which accommodate the CP violation
in the neutral kaons even if we assume that the Cabibbo-Kobayashi-Maskawa
mixing matrix is real and the sources of CP violation are three complex vacuum
expectation values and a trilinear coupling in the scalar potential. We show
that for some reasonable values of the masses and other parameters the model
allows to explain all the observed CP violation processes in the
$K^0$-$\bar{K}^0$ system.


title: From Color Fields to Quark Gluon Plasma

abstract:
  We discuss a model for the energy distribution and the early space-time
evolution of a heavy ion collision. We estimate the gluon field generated in
the wake of hard processes and through primordial fluctuations of the color
charges in the nuclei. Without specifying the dynamical mechanism of
thermalization we calculate the energy momentum tensor of the following plasma
phase. The results of this model can be used as initial conditions for a
further hydrodynamic evolution.


title: Renormalization Group Analysis in NRQCD for Colored Scalars

abstract:
  The vNRQCD Lagrangian for colored heavy scalar fields in the fundamental
representation of QCD and the renormalization group analysis of the
corresponding operators are presented. The results are an important ingredient
for renormalization group improved computations of scalar-antiscalar bound
state energies and production rates at next-to-next-to-leading-logarithmic
(NNLL) order.


title: Photon Regeneration from Pseudoscalars at X-ray Laser Facilities

abstract:
  Recently, the PVLAS collaboration has reported an anomalously large rotation
of the polarization of light in the presence of a magnetic field. As a possible
explanation they consider the existence of a light pseudoscalar particle
coupled to two photons. In this note, we propose a method of independently
testing this result by using a high-energy photon regeneration experiment (the
X-ray analogue of "invisible light shining through walls") using the
synchrotron X-rays from a free-electron laser (FEL). With such an experiment
the region of parameter space implied by PVLAS could be probed in a matter of
minutes.


title: The Invisible Axion and Neutrino Masses

abstract:
  We show that in any invisible axion model due to the effects of effective
non-renormalizable interactions related to an energy scale near the
Peccei-Quinn, grand unification or even the Planck scale, active neutrinos
necessarily acquire masses in the sub-eV range. Moreover, if sterile neutrinos
are also included and if appropriate cyclic $Z_N$ symmetries are imposed, it is
possible that some of these neutrinos are heavy while others are light.


title: Electroweak inflation and reheating in the NMSSM

abstract:
  A low reheating temperature is now well motivated by the recently
reconsidered gravitino problem, if we incorporate supergravity. In this
article, we propose a model which naturally realizes a low reheating
temperature. The model is based on the next to minimal supersymmetric standard
model (NMSSM) by identifying a singlet scalar field as the inflaton. This
entertains the possibility that the inflaton may be detected at future
colliders, such as the LHC.


title:
Are deviation from bi-maximal mixing and none-zero U_{e3} related to
  non-degeneracy of heavy Majorana neutrinos?

abstract:
  We propose a scenario that the mass splitting between the first generation of
the heavy Majorana neutrino and the other two generations of degenerate heavy
neutrinos in the seesaw framework is responsible for the deviation of the solar
mixing angle from the maximal mixing, while keeping the maximal mixing between
the tau and muon neutrinos as it is. On top of the scenario, we show that the
tiny breaking of the degeneracy of the two heavy Majorana neutrinos leads to
the non-zero small mixing angle $U_{e3}$ in the PMNS matrix and the little
deviation of the atmospheric neutrino mixing angle from the maximal mixing.


title: The Y(4260) as an omega chi_{c1} molecular state

abstract:
  It is suggested that the newly observed Y(4260) by BARBAR collaboration is a
molecular state composed of an omega and a chi_{c1}. Both the production and
decay properties are discussed. A consequence for this molecular state,
Y(4260), is that it decays into pi+pi-pi0 chi_{c1} with similar rate to pi+ pi-
J/psi. It is also expected that Y(4260) -> pi0 pi0 J/psi is produced at half
rate as Y(4260) ->pi+ pi- J/psi. These decay modes should be searched for in
the B factories using initial state radiative return data and B decay data as
well.


title: Discrete Flavor Symmetry, Dynamical Mass Textures, and Grand Unification

abstract:
  Discrete flavor symmetry is explored for an intrinsic property of mass matrix
forms of quarks and leptons. In this paper we investigate the S3 permutation
symmetry and derive the general forms of mass matrices in various types of S3
theories. We also exhibit particular realizations of previous ansatze of mass
matrices, which have often been applied in the literature to the standard model
Yukawa sector. Discrete flavor symmetry is also advantageous for vanishing
matrix elements being dynamically generated in the vacuum of scalar potential.
This is due to the fact that group operations are discrete. While zero elements
themselves do not explain mass hierarchies, we introduce an abelian flavor
symmetry. A non-trivial issue is whether successful quantum numbers can be
assigned so that they are compatible with other (non-abelian) flavor
symmetries. We show typical examples of charge assignments which not only
produce hierarchical orders of mass eigenvalues but also prohibit
non-renormalizable operators which disturb the hierarchies in first-order
estimation. As an explicit application, a flavor model is constructed in grand
unification scheme with S3 and U(1) (or Z_N) flavor symmetries.


title:
Quark--antiquark states and their radiative transitions in terms of the
  spectral integral equation. {\Huge III.} Light mesons

abstract:
  We continue the investigation of mesons in terms of the spectral integral
equation initiated before [hep-ph/0510410, hep-ph/0511005] for the $b\bar b$
and $c\bar c$ systems: in this paper we consider the light-quark ($u, d,s$)
mesons with masses $M\le 3$ GeV. The calculations have been performed for the
mesons lying on linear trajectories in the $(n,M^2)$-planes, where $n$ is the
radial quantum number. Our consideration relates to the $q\bar q$ states with
one component in the flavor space, with the quark and antiquark masses equal to
each other, such as $\pi(0^{-+})$, $\rho(1^{--})$, $\omega(1^{--})$,
$\phi(1^{--})$, $a_0(0^{++})$, $a_1(1^{++})$, $a_2(2^{++})$, $b_1(1^{+-})$,
$f_2(2^{++})$, $\pi_2(2^{-+})$, $\rho_3(3^{--})$, $\omega_3(3^{--})$,
$\phi_3(3^{--})$, $\pi_4(4^{-+})$ at $n\le 6$. We obtained the wave functions
and mass values of mesons lying on these trajectories. The corresponding
trajectories are linear, in agreement with data. We have calculated the
two-photon decays $\pi\to \gamma\gamma$, $a_0(980)\to \gamma\gamma$,
$a_2(1320)\to \gamma\gamma$, $f_2(1285)\to \gamma\gamma$, $f_2(1525)\to
\gamma\gamma$ and radiative transitions $\rho\to\gamma\pi$,
$\omega\to\gamma\pi$, that agree qualitatively with the experiment. On this
basis, we extract the singular part of the interaction amplitude, which
corresponds to the so-called "confinement interaction". The description of the
data requires the presence of the strong $t$-channel singularities for both
scalar and vector exchanges.


title: Scalar mesons on the Lattice

abstract:
  The simulations of the light scalar mesons on the lattice are presented at
the introductory level. The methods for determining the scalar meson masses are
described. The problems related to some of these methods are presented and
their solutions discussed.


title: Gluon Dominance Model

abstract:
  A new way to study the multiplicity production in high energy processes is
proposed. It is based on the multiplicity distribution description by the
schemes taking into account the formation of quark-gluon system and
hadronization. This investigations revealed an active role of gluons and the
universal mechanism of their hadronization.


title:
Photon-Parton Splitting Functions at the Next-to-Next-to-Leading Order
  of QCD

abstract:
  We have calculated the splitting functions governing the evolution of the
unpolarized parton distributions of the photon at the next-to-next-to-leading
order (NNLO) of massless perturbative QCD. The results, presented here mainly
in terms of compact and accurate parametrizations, are consistent with our
previous approximations based on the lowest six even-integer Mellin moments.
Consequently the NNLO corrections are small in both the MSbar and the DIS_gamma
factorization schemes at momentum fractions x >~ 0.1.


title: Sudakov Resummations at Higher Orders

abstract:
  We summarize our recent results on the resummation of hard-scattering
coefficient functions and on-shell form factors in massless perturbative QCD.
The threshold resummation has been extended to the fourth logarithmic order for
deep-inelastic scattering, Drell-Yan lepton pair production and Higgs
production via gluon-gluon fusion. The leading six infrared pole terms have
been derived to all orders in the strong coupling constant for the
photon-quark-quark and the (heavy-top) Higgs-gluon-gluon form factors. These
results have many implications, most notably they lead to a new best estimate
for the Higgs production cross section at the LHC.


title: Gluon Dominance Model and multiparticle production

abstract:
  Gluon dominance model is proposed to study multiparticle production. This
model describes multiplicyty distributions in $e^+e^-$, $p\bar p$ annihilation
and $pp$ interactions.


title: Measuring slepton spin at the LHC

abstract:
  A new method is presented for measuring the spin of selectrons and smuons at
the Large Hadron Collider (LHC), using an angular variable which is sensitive
to the polar angle in direct slepton pair production. This variable is
invariant under boosts along the beam axis, so it can be used at the LHC
despite the fact that the longitudinal boost of the centre-of-mass frame cannot
be determined. Monte Carlo simulations demonstrate that, using this method, the
LHC can distinguish between the supersymmetric production angular distribution
and phase space, or between supersymmetry and the production angular
distribution of universal extra dimensions. An integrated luminosity of about
100 to 300 inverse fb provides sufficient statistics to measure the slepton
spin for points which had left-handed slepton masses in the range 202 to 338
GeV, and right-handed sleptons in the range 143 to 252 GeV. Good sensitivity
was found in the `bulk' and `stau co-annihilation' regions of the cMSSM
favoured by cosmological relic density measurements. Various systematic
uncertainties are investigated, and some methods for reducing them are
discussed.


title:
Complete one--loop analysis to stop and sbottom decays into $Z$ and
  $W^{\pm}$ bosons

abstract:
  We study radiative corrections to third generation scalar fermions into gauge
bosons $Z$ and $W^\pm$. We include both SUSY-QCD, QED and full electroweak
corrections. It is found that the electroweak corrections can be of the same
order as the SUSY-QCD corrections and interfere destructively in some region of
parameter space. The full one loop correction can reach 10% in some SUGRA
scenario, while in general MSSM, the one loop correction can reach 20% for
large $\tan\beta$ and large trilinear soft breaking terms $A_b$.


title: Hadronic scattering in the Color Glass Condensate

abstract:
  Multi-particle production in QCD is dominated by higher twist contributions.
The operator product expansion is not very effective here because the number of
relevant operators grow rapidly with increasing twist. The Color Glass
Condensate (CGC) provides a framework in QCD to systematically discuss
"classical" (multiple scattering) and "quantum" evolution (shadowing) effects
in multi-particle production. The apparently insuperable problem of
nucleus-nucleus scattering in QCD simplifies greatly in the CGC. A few examples
are discussed with emphasis on open problems.


title: Heavy Wino-like Neutralino Dark Matter Annihilation into Antiparticles

abstract:
  The lightest neutralino is a viable dark matter (DM) candidate. In this paper
we study indirect detection of the wino-like neutralino DM using positrons and
antiprotons from the annihilation in the galactic halo. When the mass is around
2 TeV, which is favored from the thermal relic abundance, the non-perturbation
effect significantly enhances the annihilation cross sections into positrons
and antiprotons. We find that the positron and antiproton fluxes with energies
larger than 100 GeV may become larger than the expected backgrounds. Since the
positron flux is less sensitive to the astrophysical parameters, the detection
may be promising in the upcoming experiments such as PAMELA and AMS-02. We also
find the wino-like neutralino DM with mass around 2 TeV is compatible with the
HEAT anomaly.


title: Parton Distributions: Summary Report

abstract:
  We provide an assessment of the impact of parton distributions on the
determination of LHC processes, and of the accuracy with which parton
distributions (PDFs) can be extracted from data, in particular from current and
forthcoming HERA experiments. We give an overview of reference LHC processes
and their associated PDF uncertainties, and study in detail W and Z production
at the LHC. We discuss the precision which may be obtained from the analysis of
existing HERA data, tests of consistency of HERA data from different
experiments, and the combination of these data. We determine further
improvements on PDFs which may be obtained from future HERA data (including
measurements of $F_L$), and from combining present and future HERA data with
present and future hadron collider data. We review the current status of
knowledge of higher (NNLO) QCD corrections to perturbative evolution and
deep-inelastic scattering, and provide reference results for their impact on
parton evolution, and we briefly examine non-perturbative models for parton
distributions. We discuss the state-of-the art in global parton fits, we assess
the impact on them of various kinds of data and of theoretical corrections, by
providing benchmarks of Alekhin and MRST parton distributions and a CTEQ
analysis of parton fit stability, and we briefly presents proposals for
alternative approaches to parton fitting. We summarize the status of large and
small x resummation, by providing estimates of the impact of large x
resummation on parton fits, and a comparison of different approaches to small x
resummation, for which we also discuss numerical techniques.


title:
Final state interactions and long-distance effects in B to pion pion K
  and B to K anti K K decays

abstract:
  Charged and neutral B decays into the pi+pi-K, K+K-K and K0S K0S K0S systems
have been studied. The pi+pi- and K+K- final state interactions in the S-wave
isoscalar state are treated in an unitary way. The long-distance contributions
called charming penguins are introduced in the model. Effective mass
distributions, branching ratios and some asymmetries are succesfully compared
with the recent BaBar and Belle data. A particularly large negative direct
CP-violating asymmetry in the charged B decays into f0(980)K is evaluated for
one set of the charming penguin amplitudes.


title: The gluon Reggeization in perturbative QCD at NLO

abstract:
  Compatibility of the Reggeized form of QCD multi-particle amplitudes with the
s-channel unitarity requires fulfilment of an infinite number of the
"bootstrap" relations. On the other hand, it turns out that fulfillment of all
these relations ensures the Reggeized form of energy dependent radiative
corrections order by order in perturbation theory. It is extremely nontrivial,
that all these relations are fulfilled if the Reggeon vertices and trajectory
satisfy several bootstrap conditions. The full set of these conditions in the
next-to-leading order was derived in the last year and the ultimate condition
was shown to be satisfied recently. It means that the Reggeization hypothesis
is proved now in the next-to-leading approximation.


title: Lorentz-Violating Electromagnetostatics

abstract:
  In this talk, the stationary limit of Lorentz-violating electrodynamics is
discussed. As illustrated by some simple examples, the general solution
includes unconventional mixing of electrostatic and magnetostatic effects. I
discuss a high-sensitivity null-type measurement, exploiting Lorentz-violating
electromagnetostatic effects, that could improve existing limits on parity-odd
coefficients for Lorentz violation in the photon sector.


title: On the treatment of threshold effects in SUSY spectrum computations

abstract:
  We take a critical view of the treatment of threshold effects in SUSY
spectrum computations from high-scale input. We discuss the two principal
methods of (a) renormalization at a common SUSY scale versus (b) integrating
out sparticles at their own mass scales. We point out problems in the
implementations in public spectrum codes, together with suggestions for
improvements. In concrete examples, we compare results of Isajet7.72 and
Spheno2.2.3, and present the improvements done in Isajet7.73. We also comment
on theoretical uncertainties. Last but not least, we outline how a consistent
multiscale approach may be achieved.


title: Proton-proton interaction in constituent quarks model at LHC energies

abstract:
  In this paper we consider the soft processes at LHC energies in the framework
of the Constituent Quark Model (CQM). We show that this rather naive model is
able to describe all available soft data at lower energies and to predict the
behavior of the total cross section, elastic and diffractive cross sections at
the LHC energy. It turns out that the ''input'' Pomeron, which has been used in
this approach, has parameters that are close to so called ''hard'' Pomeron with
rather large intercept $\Delta \approx 0.12$ and small value of the slope
$\alpha'_P \approx 0.08 GeV^{-2}$. We show that the elastic amplitude has a
minimum at impact parameter $b =0$ and a maximum at $b \approx 2 GeV^{-1}$.
Such a behavior is a result of overlapping the parton clouds that belong to
different quarks in the hadron.


title: Quark mixing and CP violation - the CKM matrix

abstract:
  I present the status of the elements and parameters of the
Cabibbo-Kobayashi-Maskawa (CKM) matrix and summarise the related theoretical
progress since "Lepton-Photon 2003". One finds |V_{us}| = 0.2227 +/- 0.0017
from K and tau decays and |V_{cb}| = (41.6 +/- 0.5) * 10^{-3} from inclusive
semileptonic B decays. The unitarity triangle can now be determined from
tree-level quantities alone and the result agrees well with the global fit
including flavour-changing neutral current (FCNC) processes, which are
sensitive to new physics. From the global fit one finds the three CKM angles
theta_{12}=12.9 +/- 0.1 degrees, theta_{23}= 2.38 +/- 0.03 degrees and
theta_{13}= 0.223 +/- 0.007 degrees in the standard PDG convention. The CP
phase equals delta_{13} = gamma = (58.8 +5.3/-5.8) degrees at 1 sigma CL and
gamma=(58.8 +11.2/-15.4) degrees at 2 sigma CL. A major progress are first
results from fully unquenched lattice QCD computations for the hadronic
quantities entering the UT fit. I further present the calculation of three-loop
QCD corrections to the charm contribution in K+ -> pi+ nu nu-bar decays, which
removes the last relevant theoretical uncertainty from the K -> pi nu nu-bar
system. Finally I discuss mixing-induced CP asymmetries in b -> s q-bar q
penguin decays, whose naive average is below its Standard Model value by 3
sigma.


title: Scalar Mesons in B-decays

abstract:
  We summarize some persistent problems in scalar spectroscopy and discuss what
could be learned here from charmless B-decays. Recent experimental results are
discussed in comparison with theoretical expectations: a simple model based on
penguin dominance leads to various symmetry relations in good agreement with
recent data; a factorisation approach yields absolute predictions of rates. For
more details, see Ref. 1.


title:
Phenomenological test of the large N_c ChPT predictions for the
  pseudoscalar mixing parameters

abstract:
  A phenomenological analysis of various decay processes is performed in order
to test the large $N_c$ Chiral Perturbation Theory predictions for the octet
and singlet pseudoscalar decay constants and mixing angles. The results
obtained hint at a disagreement with the expectations of this theoretical
framework although the statistical significance is still limited.


title: Black Holes at Accelerators

abstract:
  In theories with large extra dimensions and TeV-scale gravity, black holes
are copiously produced in particle collisions at energies well above the Planck
scale. I briefly review some recent work on the phenomenology of this process,
with emphasis on theoretical uncertainties and possible strategies for
measuring the number of extra dimensions.


title: MSSM Anatomy of the Polarization Puzzle in B --> phi K* Decays

abstract:
  We analyze the $B \to \phi K^{*}$ polarization puzzle in the Minimal
Supersymmetric Standard Model (MSSM) including the neutral Higgs boson (NHB)
contributions. To calculate the non-factorizable contributions to hadronic
matrix elements of operators, we have used the QCD factorization framework to
the $\alpha_s $ order. It is shown that the recent experimental results of the
polarization fractions in $B\to \phi K^{*}$ decays, which are difficult to be
explained in SM, could be explained in MSSM if there are flavor non-diagonal
squark mass matrix elements of 2nd and 3rd generations, which also satisfy all
relevant constraints from known experiments ($B\to X_s\gamma, B_s\to
\mu^+\mu^-, B\to X_s \mu^+\mu^-, B\to X_s g, \Delta M_s$, etc.). We have shown
in details that the experimental results can be accommodated with the flavor
non-diagonal mass insertion of chirality RL, RL+LR, RR, or LL+ RR when the NHB
contributions as well as $\mathcal{O}(\alpha_s)$ corrections of hadronic matrix
elements of operators are included. However the branching ratios for the decay
are smaller than the experimental measurements.


title:
Random phase approximation to neutrino energy losses from a relativistic
  electron-positron plasma

abstract:
  The process of $\nu \bar{\nu}$ radiation from a relativistic plasma of
electrons and positrons is studied within the Random Phase Approximation.


title: Absolute Neutrino Masses

abstract:
  The main aspects of the phenomenology of absolute neutrino masses are
reviewed, focusing on the limits on neutrino masses obtained in tritium beta
decay experiments, cosmological observations and neutrinoless double-beta decay
experiments.


title: Jet and inclusive particle production in photon induced collisions

abstract:
  Recent progress in application of higher order QCD calculations to jet and
inclusive particle production in photon induced collisions is reviewed.
Attention is paid to theoretical uncertainties of such calculations,
particularly those coming from the choice of renormalization and factorization
scales.


title:
Tribimaximal Neutrino Mixing from a Supersymmetric Model with A_4 Family
  Symmetry

abstract:
  In the supersymmetric seesaw model of neutrino masses, augmented by the
non-Abelian discrete tetrahedral symmetry A_4, a specific pattern of neutrino
mixing is automatically generated if one of the three heavy singlet neutrino
superfields acquires a nonzero vacuum expectation value. This pattern turns out
to be exactly that of tribimaximal mixing, i.e. sin^2 theta_23 = 1/2, sin^2
theta_12 = 1/3, and sin^2 theta_13 = 0, in good agreement with data.


title:
Perspectives for a neutrino program based on the upgrades of the CERN
  accelerator complex

abstract:
  In this paper, we discuss the possibilities offered to neutrino physics by
the upgrades of the CERN accelerator complex. Emphasis is on the physics reach
of a medium $\gamma$ (350-580) $\beta$-beam that fully exploits the
improvements in the CERN accelerator complex for the luminosity/energy upgrade
of the LHC. We show that, this design not only profits of the ongoing efforts
for the upgrades of the LHC, but also leverage out the existing infrastructures
of the LNGS underground laboratory. Furthermore, given the involved high
neutrino energies, above 1 GeV, a non-magnetized iron detector could
efficiently exploit the neutrino beam.
  We show that the performance of this complex for what concerns the discovery
of the CP violation in the leptonic sector, in case $\theta_{13}$ is discovered
by Phase I experiments, is comparable with the current baseline design based on
a gigantic water Cherenkov at Frejus. Furthermore, this complex has also some
sensitivity to the neutrino mass hierarchy.


title:
Why the Real Part of the Proton-Proton Forward Scattering Amplitude
  Should be Measured at the LHC

abstract:
  For the energy of 14 TeV, to be reached at the Large Hadron Collider (LHC),
we have had for some time accurate predictions for both the real and imaginary
parts of the forward proton-proton elastic scattering amplitude. LHC is now
scheduled to start operating in two years, and it is timely to discuss some of
the important consequences of the measurements of both the total cross-section
and the ratio of the real to the imaginary part. We stress the importance of
measuring the real part of the proton-proton forward scattering amplitude at
LHC, because a deviation from existing theoretical predictions could be a
strong sign for new physics.


title: Reconstructing the two right-handed neutrino model

abstract:
  In this paper we propose a low-energy parametrization of the two right-handed
neutrino model, and discuss the prospects to determine experimentally these
parameters in supersymmetric scenarios. In addition, we present exact formulas
to reconstruct the high-energy leptonic superpotential in terms of the
low-energy observables. We also discuss limits of the three right-handed
neutrino model where this procedure applies.


title: SUSY Parameter Measurements with Fittino

abstract:
  This article presents the results of a realistic global fit of the Lagrangian
parameters of the Minimal Supersymmetric Standard Model with no assumptions on
the SUSY breaking mechanism using the fit program Fittino. The fit is performed
using the precision of future mass measurements of superpartners at the LHC and
mass and polarized topological cross-section measurements at the ILC. Higher
order radiative corrections are accounted for wherever possible to date.
Results are obtained for a modified SPS1a MSSM benchmark scenario (general MSSM
without assumptions on the breaking mechanism) and for a specific mSUGRA
scenario. Exploiting a simulated annealing algorithm, a stable result is
obtained without any {\it a priori} assumptions on the fit parameters. Most of
the Lagrangian parameters can be extracted at the percent level or better if
theoretical uncertainties are neglected. Neither LHC nor ILC measurements alone
will be sufficient to obtain a stable result.


title: Light Quark Condensates at Nonzero Chemical Potentials

abstract:
  We show that the quark condensates for the two light up and down flavors can
have significantly different values in the hadronic phase at nonzero
temperature, baryon and isospin chemical potentials. We quantify this
difference using a simple model.


title: Light excitations in 5-dimensional gauge theories

abstract:
  We consider general five-dimensional gauge theories compactified on on an
orbifold S1/Z2 with all fields propagating in the bulk. We propose a
generalized set of boundary conditions and derive the general features of the
low energy-spectrum. The results are illustrated with two simple examples.


title:
On the Equation of State for Diquark Systems and their importance in
  Astrophysics and Cosmology

abstract:
  With a view to studying diquark formation in QCD phase transition and its
consequences in high energy density physics, the energy per quark for the
extended scalar diquarks (ESD) as a function of density is calculated, within
the framework of an effective phi four theory, for several values of the
effective interaction parameter (lamda). Various equations of state for the ESD
systems corresponding to the different values of lamda are obtained. The
importance of the equations of state for such matter under extreme conditions
of density and/or temperature is discussed and the role of the astrophysical
diquarks in astrophysics and cosmological diquarks in cosmological conditions
is also highlighted.


title:
The Soft Scattering Contribution to Jet Quenching in a Quark-Gluon
  Plasma and General Properties of Partonic Energy Loss

abstract:
  Starting from the observation that soft rescattering of hard scattered
partons from the colour charged remnant plays an important role in
proton-proton collisions a similar model for soft scatterings in a quark-gluon
plasma was constructed and implemented as a Monte Carlo event generator. The
main emphasis was put on the question to what extend these soft scatterings can
contribute to the energy loss that an energetic parton suffers, when it
traverses a quark-gluon plasma. It was found that the soft scattering can
account for up to 50% of the observed energy loss.
  Furthermore, it was investigated what information present data reveal about
the general features of partonic energy loss. This study was carried out with a
Monte Carlo model that includes the full simulation of the quark-gluon plasma
but uses a more general ansatz for the energy loss which makes it possible to
emulate different scenarios like coherent gluon bremsstrahlung, scattering etc.
Unfortunately, it turned out that it is difficult to differentiate between them
so that at present no clear decision in favour of one or the other is possible.


title: Spin of the proton and orbital motion of quarks

abstract:
  Effect of the quark intrinsic motion on the proton spin structure functions
is demonstrated. It is shown, that the covariant version of the quark-parton
model taking into account the orbital motion gives the consistent picture of
the proton spin structure, which is based on the valence quarks. This picture
is supported by the recent data, which indicate, that the spin contributions
from the sea quarks and gluons are compatible with zero.


title: Quark Condensate in Massless QCD from Planar Equivalence

abstract:
  A previous estimate of the quark condensate in one-flavour massless QCD from
the known value of the gluino condensate in super Yang-Mills (SYM) theory is
extended to Nf >1 by considering the large-N limit of an SU(N) gauge theory
with one flavour in the antisymmetric representation and nf = Nf -1 extra
flavours in the fundamental representation. We argue that, even at nf> 0,
suitably chosen correlators in this theory can be mapped to those of SYM as
N--> infinity. We give arguments why this correspondence should be particularly
good for Nf =3 and compare our prediction with available (real and Monte Carlo)
data.


title: Hard Pomeron in exclusive meson production at ILC

abstract:
  We calculate the exclusive process gamma* gamma* ->rho rho at high energy.
The Born order estimate and the leading (LLA) and next to leading order (NLLA)
BFKL resummation effects show the feasibility of experimental detection in a
quite large range of Q2 values at future high energy e+e- linear colliders.


title: Thermalization of gluons at RHIC: Dependence on initial conditions

abstract:
  We investigate how thermalization of gluons depends on the initial conditions
assumed in ultrarelativistic heavy ion collisions at RHIC. The study is based
on simulations employing the pQCD inspired parton cascade solving the Boltzmann
equation for gluons. We consider independently produced minijets with $p_T >
p_0=1.3 \sim 2.0$ GeV and a color glass condensate as possible initial
conditions for the freed gluons. It turns out that full kinetic equilibrium is
achieved slightly sooner in denser system and its timescale tends to saturate.
Compared with the kinetic equilibration we find a stronger dependence of
chemical equilibration on the initial conditions.


title: Exclusively Exclusive Final States in Two Photon Collisions

abstract:
  The study of exclusive final states in two photon collisions is motivated by
the range of physics that can be explored from chiral dynamics, to resonance
physics to quark dynamics, all within a few GeV of threshold.


title: Studying unquenching effects in QCD with Dyson-Schwinger equations

abstract:
  We summarise recent results on the properties of gluons, quarks and light
mesons from the Green's functions approach to QCD. We discuss a
self-consistent, infrared power law solution for the Schwinger-Dyson equations
of the 1PI-Greens functions of Yang-Mills theory. The corresponding running
coupling has a universal fixed point at zero momentum. Based on these
analytical results a truncation scheme for the coupled system of
Schwinger-Dyson equations for the propagators of QCD and the Bethe-Salpeter
equation for light mesons has been formulated. We compare numerical results for
charge eigenstate vector and pseudoscalar meson observables with corresponding
lattice data. The effects of unquenching the system are found to be small but
not negligible.


title: The Heidelberg Pomeron

abstract:
  Description and understanding of hadronic high energy scattering in the
Heidelberg pomeron model