title: Walking in the third millennium

abstract:
  Based on recent progress in the study of strong dynamics in conformal field
theories, I construct a simple, one family model of dynamical electro-weak
symmetry breaking. Non-perturbative effects can be computed systematically. The
model does not suffer from the well known, parametrically big, phenomenological
difficulties of traditional technicolor models, is compatible with all present
experimental data and is testable at the LHC.


title: Quark contribution to the small-$x$ evolution of color dipole

abstract:
  The small-$x$ deep inelastic scattering in the saturation region is governed
by the non-linear evolution of Wilson-lines operators. In the leading
logarithmic approximation it is given by the BK equation for the evolution of
color dipoles. In the NLO the nonlinear equation gets contributions from quark
and gluon loops. In this paper I calculate the quark-loop contribution to
small-x evolution of Wilson lines in the NLO. It turns out that there are no
new operators at the one-loop level - just as at the tree level, the
high-energy scattering can be described in terms of Wilson lines. In addition,
from the analysis of quark loops I find that the argument of coupling constant
in the BK equation is determined by the size of the parent dipole rather than
by the size of produced dipoles. These results are to be supported by future
calculation of gluon loops.


title:
Neutrino oscillation physics at an upgraded CNGS with large next
  generation liquid Argon TPC detectors

abstract:
  The determination of the missing $U_{e3}$ element (magnitude and phase) of
the PMNS neutrino mixing matrix is possible via the detection of $\numu\to\nue$
oscillations at a baseline $L$ and energy $E$ given by the atmospheric
observations, corresponding to a mass squared difference $E/L \sim \Delta
m^2\simeq 2.5\times 10^{-3} eV^2$. While the current optimization of the CNGS
beam provides limited sensitivity to this reaction, we discuss in this document
the physics potential of an intensity upgraded and energy re-optimized CNGS
neutrino beam coupled to an off-axis detector. We show that improvements in
sensitivity to $\theta_{13}$ compared to that of T2K and NoVA are possible with
a next generation large liquid Argon TPC detector located at an off-axis
position (position rather distant from LNGS, possibly at shallow depth). We
also address the possibility to discover CP-violation and disentangle the mass
hierarchy via matter effects. The considered intensity enhancement of the CERN
SPS has strong synergies with the upgrade/replacement of the elements of its
injector chain (Linac, PSB, PS) and the refurbishing of its own elements,
envisioned for an optimal and/or upgraded LHC luminosity programme.


title:
Single production of charged gauge bosons from little Higgs models in
  association with top quark at the $LHC$

abstract:
  In the context of the little Higgs models, we discuss single production of
the new charged gauge bosons in association with top quark at the $CERN$ Large
Hadron Collider$(LHC)$. We find that the new charged gauge bosons $W_{H}^{-}$
and $X^{-}$, which are predicted by the littlest Higgs model and the SU(3)
simple model, respectively, can be abundantly produced at the $LHC$. However,
since the main backgrounds coming from the processes $pp\to t\bar{t}+X$ and
$pp\to tW^{-}+X$ are very large, the values of the ratios $N_{W}$ and $N_{X}$
are very small in most of the parameter space. It is only possible to detect
the signal of the gauge boson $W_{H}^{-}$ via the process $pp\to gb+X\to
tW_{H}^{-}+X$ at the $LHC$ in a small region of the parameter space.


title:
General formula for the four-quark condensate and vacuum factorization
  assumption

abstract:
  By differentiating the dressed quark propagator with respect to a variable
background field, the linear response of the dressed quark propagator in the
presence of the background field can be obtained. From this general method,
using the vector background field as an illustration, we derive a general
formula for the four-quark condensate $<{\tilde 0}|:{\bar q}(0)\gamma_\mu
q(0){\bar q}(0)\gamma_\mu q(0):|{\tilde 0}>$. This formula contains the
corresponding fully dressed vector vertex and it is shown that factorization
for $<{\tilde 0}|:{\bar q}(0)\gamma_\mu q(0){\bar q}(0)\gamma_\mu q(0):|
{\tilde 0}>$ holds only when the dressed vertex is taken to be the bare one.
This property also holds for all other type of four-quark condensate.


title:
QCD corrections to the R-parity violating processes $p\bar{p}/pp \to
  e\mu+X$ at hadron colliders

abstract:
  We present the QCD corrections to the processes $p\bar{p}/pp \to e\mu+X$ at
the Tevatron and the CERN large hadron collider(LHC). The numerical results
show that variation of K factor is in the range between $1.28(1.32)$ and
$1.79(1.58)$ at the Tevatron(LHC). We find that the QCD correction part from
the one-loop gluon-gluon fusion subprocess is remarkable at the LHC and should
be taken into account.


title: Orbifold Reduction Of The Quark-Lepton Symmetric Model

abstract:
  We investigate the quark-lepton symmetric gauge group in five dimensions,
with the gauge symmetry broken by a combination of orbifold compactification of
the extra dimension and the Higgs mechanism. The gauge sector of the model is
investigated and contrasted with the four dimensional case. We obtain lower
bounds on the mass of the exotic gauge bosons, the inverse compactification
scale and the exotic leptons. Light neutrinos are obtained without requiring
any scale larger than a TeV. However an ultra-violet cut-off of order $10^{11}$
GeV is required to suppress proton decay inducing non-renormalizable operators.


title: Soft-Hard Decomposition in QCD Jet Physics

abstract:
  The paper generalizes the results on soft - hard decomposition of the
characteristics of QCD jets obtained in [1] by taking into account the effects
of fermions and running coupling constant.


title: Perfecting the Ultra-violet of Holographic Descriptions of QCD

abstract:
  We investigate imposing a UV cutoff into a simple AdS/QCD model of the rho
mesons. The cutoff corresponds to the scale at which QCD moves from
perturbative to non-perturbative behaviour, above which the gravity dual will
itself become strongly coupled. Simply imposing a cutoff significantly improves
the fit to the masses of the tower of excited rho mesons. Formally one should
match the couplings of higher dimension operators and the anomalous dimensions
of fields to the QCD values at the cutoff. We explore examples of these
matchings including looking at the anomalous dimensions of the qbar gamma^mu q
operators and including a G Tr F^4 coupling.


title:
Probing CP-violating Higgs contributions in gamma-gamma -> f anti-f
  through fermion polarization

abstract:
  We discuss the use of fermion polarization for studying neutral Higgs bosons
at a photon collider. To this aim we construct polarization asymmetries which
can isolate the contribution of a Higgs boson $\phi$ in $\gamma\gamma\to f \bar
f$, $f=\tau/t$, from that of the QED continuum. This can help in getting
information on the $\gamma\gamma\phi$ coupling in case $\phi$ is a CP
eigenstate. We also construct CP-violating asymmetries which can probe CP
mixing in case $\phi$ has indeterminate CP. Furthermore, we take the MSSM with
CP violation as an example to demonstrate the potential of these asymmetries in
a numerical analysis. We find that these asymmetries are sensitive to the
presence of a Higgs boson as well as its CP properties over a wide range of
MSSM parameters. In particular, the method suggested can cover the region where
a light Higgs boson may have been missed by LEP due to CP violation in the
Higgs sector, and may be missed as well at the LHC.


title:
A Brief Account of $B \to K^* \ell^+\ell^-$ Decay in Soft-Collinear
  Effective Theory

abstract:
  A brief account of the study of rare B decay $B \to K^\ast \ell^+ \ell^-$
using soft-collinear effective theory (SCET) is presented. Theoretical
underpinning of this work is a factorization formula, derived to leading power
in $1/m_b$ and valid to all orders in $\alpha_s$. Partially integrated
branching ratio in the dilepton squared mass range $1 {GeV}^2 \le q^2 \le 7
{GeV}^2$ and the forward-backward (FB) asymmetry of the leptons are calculated.
For the zero-point of the FB asymmetry, we get $q_0^2=(4.07^{+0.16}_{-0.13})
{GeV}^2$. The scale-related uncertainty of $q_0^2$ is improved compared to the
earlier estimate of the same.


title: QCD Coulomb gauge approach to hybrid mesons

abstract:
  An effective Coulomb gauge Hamiltonian, H_eff, is used to calculate the light
(u-ubar-g), strange (s-sbar-g) and charmed (c-cbar-g) hybrid meson spectra. For
the same two parameter H_eff providing glueball masses consistent with lattice
results and a good description of the observed u,d,s and c quark mesons, a
large-scale variational treatment predicts the lightest hybrid has
J^{PC}=0^{++} and mass 2100 MeV. The lightest exotic 1^{-+} state is just above
2200 MeV, near the upper limit of lattice and Flux Tube predictions. These
theoretical formulations all indicate the observed 1^{-+} pi_1(1600) and, more
clearly, pi_1(1400) are not hybrid states. The Coulomb gauge approach further
predicts that in the strange and charmed sectors, respectively, the ground
state hybrids have 1^{+-} with masses 2125 and 3830 MeV, while the first exotic
1^{-+} states are at 2395 and 4020 MeV. Finally, using our hybrid
wavefunctions, dimensional counting rules and the Franck-Condon principle,
novel experimental signatures are presented to assist light and heavy hybrid
meson searches.


title:
Mesonic correlation functions at finite temperature and density in the
  Nambu-Jona-Lasinio model with a Polyakov loop

abstract:
  We investigate the properties of scalar and pseudo-scalar mesons at finite
temperature and quark chemical potential in the framework of the
Nambu-Jona-Lasinio (NJL) model coupled to the Polyakov loop (PNJL model) with
the aim of taking into account features of both chiral symmetry breaking and
deconfinement. The mesonic correlators are obtained by solving the
Schwinger-Dyson equation in the RPA approximation with the Hartree (mean field)
quark propagator at finite temperature and density. In the phase of broken
chiral symmetry a narrower width for the sigma meson is obtained with respect
to the NJL case; on the other hand, the pion still behaves as a Goldstone
boson. When chiral symmetry is restored, the pion and sigma spectral functions
tend to merge. The Mott temperature for the pion is also computed.


title: Relativistic Dissipative Hydrodynamics: A Minimal Causal Theory

abstract:
  We present a new formalism for the theory of relativistic dissipative
hydrodynamics. Here, we look for the minimal structure of such a theory which
satisfies the covariance and causality by introducing the memory effect in
irreversible currents. Our theory has a much simpler structure and thus has
several advantages for practical purposes compared to the Israel-Stewart theory
(IS). It can readily be applied to the full three-dimensional hydrodynamical
calculations. We apply our formalism to the Bjorken model and the results are
shown to be analogous to the IS.


title: Baryons and Large N_c in Happy Resonance

abstract:
  I discuss recent developments in the large N_c treatment of unstable baryon
resonances and the scattering amplitudes in which they appear. These include
pion photoproduction, extension to three-flavor processes, decoupling of large
N_c artifacts, and combination of this approach with results of chiral
symmetry.


title:
Distinguishing Little-Higgs Product and Simple Group models at the LHC
  and ILC

abstract:
  We propose a means to discriminate between the two basic variants of Little
Higgs models, the Product Group and Simple Group models, at the next generation
of colliders. It relies on a special coupling of light pseudoscalar particles
present in Little Higgs models, the pseudo-axions, to the Z and the Higgs
boson, which is present only in Simple Group models. We discuss the collider
phenomenology of the pseudo-axion in the presence of such a coupling at the
LHC, where resonant production and decay of either the Higgs or the
pseudo-axion induced by that coupling can be observed for much of parameter
space. The full allowed range of parameters, including regions where the
observability is limited at the LHC, is covered by a future ILC, where double
scalar production would be a golden channel to look for.


title:
Renormalization of the baryon axial vector current in large-N_c chiral
  perturbation theory

abstract:
  The baryon axial vector current is computed at one-loop order in heavy baryon
chiral perturbation theory in the large-N_c limit, where N_c is the number of
colors. Loop graphs with octet and decuplet intermediate states cancel to
various orders in N_c as a consequence of the large-N_c spin-flavor symmetry of
QCD baryons. These cancellations are explicitly shown for the general case of
N_f flavors of light quarks. In particular, a new generic cancellation is
identified in the renormalization of the baryon axial vector current at
one-loop order. A comparison with conventional heavy baryon chiral perturbation
theory is performed at the physical values N_c=3, N_f=3.


title: Quarkonium production via recombination

abstract:
  The contrast between model predictions for the transverse momentum spectra of
J/Psi observed in Au-Au collisions at RHIC is extended to include effects of
nuclear absorption. We find that the difference between initial production and
recombination is enhanced in the most central collisions. Models utilizing a
combination of these sources may eventually be able to place constraints on
their relative magnitudes.


title: Semileptonic and nonleptonic decays of Bc

abstract:
  Using our relativistic constituent quark model we present results on the
exclusive nonleptonic and semileptonic decays of the Bc-meson. The nonleptonic
decays are studied in the framework of the factorization approximation. We
calculate the branching ratios for a large set of exclusive nonleptonic and
semileptonic decays of the Bc-meson and compare our results with the results of
other models.


title: Triply Heavy Baryons

abstract:
  The triply heavy baryons are very different in their mass. They are
essentially $\Omega_{ccc}$, $\Omega_{ccb}$, $\Omega_{cbb}$ and $\Omega_{bbb}$
baryons which may be produced in a $c$ or a $b$ quark fragmentation. Here we
briefly review the direct fragmentation production of these states and choose
$\Omega_{ccc}$ and $\Omega_{bbb}$ baryons as prototype of them to consider
their production at the hadron colliders with different $\sqrt{s}$. It becomes
clear that their production cross sections fall within a rather diverse range
according to $\sqrt{s}$, minimum transverse momentum and rapidity. We present
and compare transverse momentum distributions of the differential cross
sections, $p_T^{\rm min}$ distributions of total cross sections and the
integrated total cross sections for all triply heavy baryons at CERN LHC and
simlar quantities for $\Omega_{ccc}$ and $\Omega_{bbb}$ at RHIC, Tevatron Run
II and the CERN LHC. While some of them possess considerable event rates even
at RHIC proton-proton collider, others need much more energetic hadron collider
with appropriate kinematical cuts to be produced.


title: The Fermi Motion and $J/\psi$ Production at the Hadron Colliders

abstract:
  The Fermi motion effect in $J/\psi$ production in various hadron colliders is
studied. We deduce that in agreement with sum rules which the fragmentation
functions should satisfy, while the effect has considerable influence on the
fragmentation probabilities and the differential cross sections, the total
cross sections are essentially left unchanged.


title: Connecting Low Energy Leptonic CP-violation to Leptogenesis

abstract:
  It was commonly thought that the observation of low energy leptonic
CP-violating phases would not automatically imply the existence of a baryon
asymmetry in the leptogenesis scenario. This conclusion does not generically
hold when the issue of flavour is relevant and properly taken into account in
leptogenesis. We illustrate this point with various examples studying the
correlation between the baryon asymmetry and the CP-violating asymmetry in
neutrino oscillations and the effective Majorana mass in neutrinoless double
beta decay.


title:
Right-Handed Sneutrino Condensate Cold Dark Matter and the
  Baryon-to-Dark Matter Ratio

abstract:
  The similarity of the observed densities of baryons and cold dark matter
suggests that they have a common or related origin. This can be understood in
the context of the MSSM with right-handed (RH) sneutrinos if cold dark matter
is due to a d = 4 flat direction condensate of very weakly coupled RH sneutrino
LSPs and the baryon asymmetry is generated by Affleck-Dine leptogenesis along
the d = 4 (H_{u}L)^{2} flat direction. The correct density of RH sneutrino dark
matter is obtained if the reheating temperature is in the range 10^{6}-10^{8}
GeV. A cold dark matter isocurvature perturbation close to present
observational bounds is likely in the case of inflation driven by a D-term or
by an F-term with suppressed Hubble corrections to the A-terms. An observable
baryon isocurvature perturbation is also possible in the case of D-term
inflation models.


title: Spin Physics

abstract:
  We review recent experimental and theoretical progress in spin physics, as
presented in the spin parallel session of DIS2006. In particular, we discuss
the status of the nucleon spin structure, transverse polarized asymmetries, and
recent developments such as DVCS, polarized fragmentation and polarized
resummation.


title:
Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar
  mesons

abstract:
  Global fits to charmless B --> PP decays in the framework of flavor SU(3)
symmetry are updated and improved without reference to the \sin2\beta measured
from the charmonium decay modes. Fit results directly constrain the
(\bar\rho,\bar\eta) vertex of the unitarity triangle, and are used to predict
the branching ratios and CP asymmetries of all decay modes, including those of
the B_s system. Different schemes of SU(3) breaking in decay amplitude sizes
are analyzed. The major breaking effect between strangeness-conserving and
strangeness-changing decays can be accounted for by including a ratio of decay
constants in tree and color-suppressed amplitudes. The possibility of having a
new physics contribution to K \pi decays is also examined from the data fitting
point of view.


title: Randall-Sundrum and Flipped SU(5)

abstract:
  In this letter, we construct a model based on a flipped SU(5) partial grand
unified theory, within the framework of the Randall-Sundrum (RS1) proposal.
Breaking of $\widetilde{SU}(5)$ is achieved using a bulk scalar field in the
\textbf{10} of SU(5), $\Phi$, which gains a vacuum expectation value $\left<
\Phi\right> \sim 3 \times 10^{15}$ GeV. We are able to retain the successes of
the flipped SU(5) phenomenology, namely the elimination of the doublet-triplet
splitting problem and the confinement of all fields to the smallest
(\textbf{1}, $\mathbf{\bar{5}}$, and \textbf{10}) representations of SU(5). We
derive the beta functions, and point out some constraints on bulk matter
content implied by the runnings (and positivity) of the five dimensional
coupling. Finally, we comment on baryon decay and show the fine-tuning problem
required to prevent an exponentially short proton lifetime.


title: A study of meson condensation and of the QCD critical line

abstract:
  In this thesis work we have employed two microscopic models (ladder-QCD and
Nambu-Jona-Lasinio) for describing the properties of the QCD phase diagram at
finite temperature and quark densities. In particular, we have studied the
mechanism of meson condensation at finite isospin and strangeness chemical
potentials, and its competition with ``standard'' scalar fermionic condensates.
In the last chapter, a detailed study of the chiral critical line at finite
chemical potentials has been performed, achieving a remarkable agreement with
recent lattice data.


title: The unit of electric charge and the mass hierarchy of heavy particles

abstract:
  We propose some empirical formulae relating the masses of the heaviest
particles in the standard model (the W,Z,H bosons and the t quark) to the
charge of the positron $e$ and the Higgs condensate v. The relations for the
masses of gauge bosons m_W = (1+e)v/4 and m_Z=sqrt{(1+e^2)/2}*(v/2) are in
excellent agreement with experimental values. By requiring the electroweak
standard model to be free from quadratic divergencies at the one-loop level, we
find: m_t=v/sqrt{2} and m_H=v/sqrt{2e}, or the very simple ratio (m_t/m_H)^2=e.


title: Neutralino Dark Matter in Mirage Mediation

abstract:
  We study the phenomenology of neutralino dark matter (DM) in mirage mediation
scenario of supersymmetry breaking which results from the moduli stabilization
in some string/brane models. Depending upon the model parameters, especially
the anomaly to modulus mediation ratio determined by the moduli stabilization
mechanism, the nature of the lightest supersymmetric particle (LSP) changes
from Bino-like neutralino to Higgsino-like one via Bino-Higgsino mixing region.
For the Bino-like LSP, the standard thermal production mechanism can give a
right amount of relic DM density through the stop/stau-neutralino
coannihilation or the pseudo-scalar Higgs resonance process. We also examine
the prospect of direct and indirect DM detection in various parameter regions
of mirage mediation. Neutralino DM in galactic halo might be detected by near
future direct detection experiments in the case of Bino-Higgsino mixed LSP. The
gamma ray flux from Galactic Center might be detectable also if the DM density
profile takes a cuspy shape.


title: Partial waves of baryon-antibaryon in three-body B meson decay

abstract:
  The conspicuous threshold enhancement has been observed in the
baryon-antibaryon subchannels of many three-body B decay modes. By examining
the partial waves of baryon-antibaryon, we first show for B- -->pp-bar K- that
the pK- angular correlation rules out dominance of a single pp-bar partial wave
for the enhancement, for instance, the resonance hypothesis or the strong
final-state interaction in a single channel. The measured pK- angular
correlation turns out to be opposite to the naive expectation of the
short-distance picture. We study the origin of this reversed angular
correlation in the context of the pp-bar partial waves and argue that NN-bar
bound states may be the cause of this sign reversal. Dependence of the angular
correlation on the pp-bar invariant mass is very important to probe the
underlying problem from the experimental side.


title: Constraining Universal Extra Dimensions through B decays

abstract:
  We analyze the exclusive rare $B \to K^{(*)} \ell^+ \ell^-$, $B \to K^{(*)}
\nu \bar \nu$ and $B \to K^* \gamma$ decays in the Applequist-Cheng-Dobrescu
model, an extension of the Standard Model in presence of universal extra
dimensions. In the case of a single universal extra dimension, we study the
dependence of several observables on the compactification parameter 1/R, and
discuss whether the hadronic uncertainty due to the form factors obscures or
not such a dependence. We find that, using present data, it is possible in many
cases to put a sensible lower bound to 1/R, the most stringent one coming from
$B \to K^* \gamma$.


title:
Estimates for parameters and characteristics of the confining
  SU(3)-gluonic field in pions and kaons

abstract:
  The estimates of parameters for the classical SU(3)-gluonic field responsible
for linear confinement are given for pions and kaons. Also estimates for the
characteristics of the mentioned field such as gluon concentrations, electric
and magnetic colour field strengths are adduced along with those for quark
velocities in mesons under discussion. Possible connection of the obtained
results with potential approach and string-like picture of confinement is
outlined as well.


title: Towards an understanding of the light scalar mesons

abstract:
  Although studied for many years the nature of the light scalar mesons remains
controversial. Here we shall present a method, applicable for s-wave states
located close to a threshold, that allows one to quantify the molecular part of
a given state. When applied to the $f_0(980)$ a dominance of the molecular
component is found. In the second part we show that requirements of field
theoretic consistency and chiral symmetry, when applied to the scattering of
light pseudo--scalars, naturally lead to the appearance of dynamical poles in
the scalar sector. A program is proposed on how to further investigate
experimentally the mixing between these dynamical states and possible genuine
quark states.


title: The double life of the X meson

abstract:
  The molecule and the tetraquark model are the two competing interpretations
of the X(3872). I will briefly comment on how far these two pictures are really
resolvable by the experiment, and I will give a concise account on a new method
for defining the quark content of hadrons at heavy-ion colliders.


title: Theoretical overview on tau physics

abstract:
  Precise measurements of the tau lepton properties provide stringent tests of
the Standard Model structure and accurate determinations of its parameters. We
overview the present status of a few selected topics: lepton universality, QCD
tests and the determination of alpha_s, m_s and V_us from hadronic tau decays,
and lepton flavor violation phenomena.


title:
Evolution of Coupled Scalar and Spinor Particles in Classical Field
  Theory

abstract:
  We study the evolution of mixed scalar as well as spinor fields within the
context of the classical field theory. The initial condition problem is solved
and the fields distributions, exactly accounting for the initial conditions,
are obtained for both scalar and spinor fields. In the system of two coupled
fields we consider the special case of the initial conditions which are rapidly
oscillating functions. It is demonstrated that the energy densities of the
scalar fields and the intensities of the spinor fields coincide with the usual
transition and survival probabilities of neutrino flavor oscillations in
vacuum.


title: (Pseudo)-Dirac neutrinos and leptogenesis

abstract:
  We discuss how Dirac neutrinos can naturally be generated in supersymmetry
and how they allow for an Affleck-Dine leptogenesis scenario, in which a
left-right asymmetry is generated in the sneutrino sector, the left part of
which is transferred to a baryon asymmetry via sphaleron transitions. No exotic
fields need to be added to the MSSM other than the right-handed neutrino.


title: Production of new chiral bosons at Tevatron and LHC

abstract:
  The possibility of production of new spin-1 chiral particles at the hadron
colliders the Tevatron and the LHC is considered. Their coupling constants to
ordinary fermions can be fixed using the hypothesis about a dynamical
generation of kinetic terms for the bosons and assuming an universality of
interactions of these particles. The masses of the chiral particles can be
predicted from experimental data of precise low-energy experiments, which
already indicate indirectly the existence of such new particles. Quantitative
estimations of the production cross-sections of the chiral particles are made.
It is noteworthy that, due to their non-gauge interactions with fermions, their
decays do not lead to the Jacobian peak in the transverse momentum/mass
distribution. Moreover, the lightest chiral particles show leptophobic
character, which makes their detection at hadron colliders challenging.


title: Dark Matter from Gaugino Mediation

abstract:
  We study dark matter for gaugino-mediated supersymmetry breaking and compact
dimensions of order the grand unification scale. Higgs fields are bulk fields,
and in general their masses differ from those of squarks and sleptons at the
unification scale. As a consequence, at different points in parameter space,
the gravitino, a neutralino or a scalar lepton can be the lightest (LSP) or
next-to-lightest (NLSP) superparticle. We investigate the constraints from
primordial nucleosynthesis on the different scenarios. While neutralino and
gravitino dark matter with a sneutrino NLSP are consistent for a wide range of
parameters, gravitino dark matter with a stau NLSP is strongly constrained.


title:
Prospects for b-quark production cross section measurements in pp
  collisions at the LHC

abstract:
  A brief review of theoretical and experimental aspects of $b$-quark
production measurements at the LHC.


title: Natural Inflation: status after WMAP 3-year data

abstract:
  The model of Natural Inflation is examined in light of recent 3-year data
from the Wilkinson Microwave Anisotropy Probe and shown to provide a good fit.
The inflaton potential is naturally flat due to shift symmetries, and in the
simplest version takes the form $V(\phi) = \Lambda^4 [1 \pm \cos(N\phi/f)]$.
The model agrees with WMAP3 measurements as long as $f > 0.7 m_{Pl}$ (where
$m_{Pl} = 1.22 \times 10^{19}$GeV) and $\Lambda \sim m_{GUT}$. The running of
the scalar spectral index is shown to be small -- an order of magnitude below
the sensitivity of WMAP3. The location of the field in the potential when
perturbations on observable scales are produced is examined; for $f > 5
m_{Pl}$, the relevant part of the potential is indistinguishable from a
quadratic, yet has the advantage that the required flatness is well-motivated.
Depending on the value of $f$, the model falls into the large field ($f \ge 1.5
m_{Pl}$) or small field ($f < 1.5 m_{Pl}$) classification scheme that has been
applied to inflation models. Natural inflation provides a good fit to WMAP3
data.


title: Baryogenesis

abstract:
  Pedagogical lectures on baryogenesis, with emphasis on the electroweak phase
transition and electroweak baryogenesis. Contents: (1) Observational evidence
for the BAU; (2) Sakharov's conditions for baryogenesis; (3) Example: GUT
baryogenesis; (4) B and CP violation in the standard model; (5) Electroweak
phase transition and electroweak baryogenesis; (6) A model of electroweak
baryogenesis: the two Higgs doublet model; (7) EWBG in the MSSM; (8)
Leptogenesis


title: Phenomenology of neutrinoless double beta decay

abstract:
  Neutrinoless double beta decay violates lepton number by two units, a
positive observation therefore necessarily implies physics beyond the standard
model. Here, three possible contributions to neutrinoless double beta decay are
briefly reviewed: (a) The mass mechanism and its connection to neutrino
oscillations; (b) Left-right symmetric models and the lower limit on the
right-handed W boson mass; and (c) R-parity violating supersymmetry. In
addition, the recently published ``extended black box'' theorem is briefly
discussed. Combined with data from oscillation experiments this theorem
provides proof that the neutrinoless double beta decay amplitude must receive a
non-zero contribution from the mass mechanism, if neutrinos are indeed Majorana
particles.


title: Natural Dark Matter

abstract:
  In this talk we analyse the claim that supersymmetry (SUSY) naturally
accounts for the observed dark matter density. In many cases, it is necessary
to tune the parameters of a SUSY model to fit the WMAP data. We provide a
quantitative analysis of the degree of tuning required for different
annihilation channels. Some regions are natural, requiring no tuning at all,
whereas others require tuning at the 0.1% level.


title: A holographic composite Higgs model

abstract:
  If the Higgs boson has a composite nature, it might be the 4-dimensional
hologram of a gauge field living in a warped extra dimension. In this talk I
discuss a minimal, calculable model that passes all electroweak precision
tests, included that from Z->bb, and gives a natural account of the electroweak
symmetry breaking.


title: Diffraction and an infrared finite gluon propagator

abstract:
  We discuss some phenomenological applications of an infrared finite gluon
propagator characterized by a dynamically generated gluon mass. In particular
we compute the effect of the dynamical gluon mass on $pp$ and ${\bar{p}}p$
diffractive scattering. We also show how the data on $\gamma p$ photoproduction
and hadronic $\gamma \gamma$ reactions can be derived from the $pp$ and
$\bar{p}p$ forward scattering amplitudes by assuming vector meson dominance and
the additive quark model.


title: New Bounds on Isotropic Lorentz Violation

abstract:
  Violations of Lorentz invariance that appear via operators of dimension four
or less are completely parameterized in the Standard Model Extension (SME). In
the pure photonic sector of the SME, there are nineteen dimensionless,
Lorentz-violating parameters. Eighteen of these have experimental upper bounds
ranging between 10^{-11} and 10^{-32}; the remaining parameter, k_tr, is
isotropic and has a much weaker bound of order 10^{-4}. In this Brief Report,
we point out that k_tr gives a significant contribution to the anomalous
magnetic moment of the electron and find a new upper bound of order 10^{-8}.
With reasonable assumptions, we further show that this bound may be improved to
10^{-14} by considering the renormalization of other Lorentz-violating
parameters that are more tightly constrained. Using similar renormalization
arguments, we also estimate bounds on Lorentz violating parameters in the pure
gluonic sector of QCD.


title:
Heavy Pair Production Currents with General Quantum Numbers in
  Dimensionally Regularized NRQCD

abstract:
  We discuss the form and construction of general color singlet heavy
particle-antiparticle pair production currents for arbitrary quantum numbers,
and issues related to evanescent spin operators and scheme-dependences in
nonrelativistic QCD (NRQCD) in n=3-2epsilon dimensions. The anomalous
dimensions of the leading interpolating currents for heavy quark and colored
scalar pairs in arbitrary (2S+1)L_J angular-spin states are determined at
next-to-leading order in the nonrelativistic power counting.


title: Folded Supersymmetry and the LEP Paradox

abstract:
  We present a new class of models that stabilize the weak scale against
radiative corrections up to scales of order 5 TeV without large corrections to
precision electroweak observables. In these `folded supersymmetric' theories
the one loop quadratic divergences of the Standard Model Higgs field are
cancelled by opposite spin partners, but the gauge quantum numbers of these new
particles are in general different from those of the conventional
superpartners. This class of models is built around the correspondence that
exists in the large N limit between the correlation functions of supersymmetric
theories and those of their non-supersymmetric orbifold daughters. By
identifying the mechanism which underlies the cancellation of one loop
quadratic divergences in these theories, we are able to construct simple
extensions of the Standard Model which are radiatively stable at one loop.
Ultraviolet completions of these theories can be obtained by imposing suitable
boundary conditions on an appropriate supersymmetric higher dimensional theory
compactified down to four dimensions. We construct a specific model based on
these ideas which stabilizes the weak scale up to about 20 TeV and where the
states which cancel the top loop are scalars not charged under Standard Model
color. Its collider signatures are distinct from conventional supersymmetric
theories and include characteristic events with hard leptons and missing
energy.


title: Electric Dipole Moments as Probes of CPT Invariance

abstract:
  Electric dipole moments (EDMs) of elementary particles and atoms probe
violations of T and P symmetries and consequently of CP if CPT is an exact
symmetry. We point out that EDMs can also serve as sensitive probes of CPT-odd,
CP-even interactions, that are not constrained by any other existing
experiments. Analyzing models with spontaneously broken Lorentz invariance, we
calculate EDMs in terms of the leading CPT-odd operators to show that
experimental sensitivity probes the scale of CPT breaking as high as
10^{12}GeV.


title:
Form factors in B->f0(980) and D->f0(980) transitions from dispersion
  relations

abstract:
  Within the dispersion relation approach we give the double spectral
representation for space-like and time-like B-> f_0(980) and D-> f_0(980)
transition form factors in the full q^2 range. The spectral densities, being
the input of the dispersion relations, are obtained from a triangle diagram in
the relativistic quark model.


title: Analysis of the $\Sigma-n $ form factors with light-cone QCD sum rules

abstract:
  In this work, we study the four form-factors $f_1(Q^2)$, $f_2(Q^2)$,
$g_1(Q^2)$ and $g_2(Q^2)$ of the $\Sigma \to n$ in the framework of the
light-cone QCD sum rules approach up to twist-6 three valence quark light-cone
distribution amplitudes. The $f_1(0)$ is the basic input parameter in
extracting the CKM matrix element $|V_{us}|$ from the hyperon decays.
  The four form-factors $f_1(Q^2)$, $f_2(Q^2)$, $g_1(Q^2)$ and $g_2(Q^2)$ at
intermediate and large momentum transfers with $Q^2> 3 GeV^2$ have significant
contributions from the end-point (soft) terms. The numerical values of the four
form-factors $f_1(0)$, $f_2(0)$, $g_1(0)$ and $g_2(0)$ are compatible with the
experimental data and theoretical calculations (in magnitude); although the
uncertainties are large.


title: PQCD approach to parton propagation in matter

abstract:
  We review recent theoretical developments in understanding the many-body
perturbative QCD dynamics of strongly-interacting hard probes in dense nuclear
matter. The relation between initial- and final-state parton scattering in
nuclei and the quark-gluon plasma and experimental measurements of the Cronin
effect, nuclear shadowing, jet quenching, modified di-hadron correlations and
forward rapidity particle suppression in p+A and A+A reactions is clarified.
Our approach emphasizes the process dependence of nuclear effects and outlines
the techniques for their dynamical calculation and incorporation in simulations
that build upon collinear factorization in QCD.


title: Cosmological Implications of the String Theory Landscape

abstract:
  Progress in string theory has resulted in a whole landscape of vacua
solutions.In this talk I describe a proposal for exploring the cosmological
implications of the landscape, based on the dynamics of the wavefunction of the
universe propagating on it. The landscape is taken as the phase space of the
initial conditions since every of its vacua can potentially give rise to a
universe. A superselection rule on the landscape phase space emerges when we
include the backreaction of massive long wavelengths and the quantum dynamics
of gravitational and matter degrees of freedom. The quantum dynamics of the
system selects only high energy patches which survive the collapse induced by
the gravitational instability of massive perturbations.


title: Sterile neutrino states

abstract:
  Neutrino masses are likely to be a manifestation of the right-handed, or
sterile neutrinos. The number of sterile neutrinos and the scales of their
Majorana masses are unknown. We explore theoretical arguments in favor of the
high and low scale seesaw mechanisms, review the existing experimental results,
and discuss the astrophysical hints regarding sterile neutrinos.


title:
Photon Radiation and Dilepton Production Induced by Rescattering in
  Strong Interacting Medium

abstract:
  Using the opacity expansion technique we investigate the photon radiation and
dilepton production induced by multiple rescattering as energetic parton jet
passing through the strong interacting medium. The real photon radiation and
dilepton invariant-mass spectrums of the bremsstrahlung contribution from an
energetic quark jet are presented. The leading contribution of total energy
loss by photon emmision in medium of a higher energy quark jet is found to be
proportional to the jet energy and has a linear dependence on the thickness of
the nuclear target. The rescattering contribution for the dilepton is important
only for small value of the invariant-mass and for the not so fast jet. The
contribution fraction of the dilepton induced by rescattering in medium is
found to be nearly a constant when the ratio of jet energy to Debye screening
mass $E/\mu$ is large.


title:
Some Features of the Production of Heavy-Quark-Containing Baryons in
  Electron-Positron Collisions

abstract:
  The production of various heavy-quark-containing baryons in electron-positron
annihilation is considered. On the basis of exact formulas that we obtained
previously within full perturbation theory, new numerical calculations of the
respective cross sections are performed, and simple approximate expressions are
then constructed for the results of these calculations. The dependence of the
total cross sections on the masses of constituent quarks is discussed. The
application of the Peterson fragmentation function and a Reggeon-type
fragmentation function to describing differential cross sections is analyzed.


title:
Cross-fertilization of QCD and statistical physics: high energy
  scattering, reaction-diffusion, selective evolution, spin glasses and their
  connections

abstract:
  High energy scattering was recently shown to be similar to a
reaction-diffusion process. The latter defines a wide universality class that
also contains e.g. some specific population evolution models. The common point
of all these models is that their respective dynamics are described by noisy
traveling wave equations. This observation has led to a new understanding of
QCD in the regime of high energies, and known universal results on
reaction-diffusion models could be transposed to obtain quantitative properties
of QCD amplitudes. Conversely, new general results for that kind of statistical
models have also been derived. Furthermore, an intriguing relationship between
noisy traveling wave equations and the theory of spin glasses was found.


title:
Particle Spectrum in the Minimal Supersymmetric Standard Model with
  non-universal Higgs masses

abstract:
  We present semi-analytical solutions of the supersymmetric non-universal
masses models for low $\tan\beta$ regime. In addition to this, scale and
$\tan\beta$ dependencies of the soft (mass)$^2$ terms are given in the form of
numerical solutions. By using the constrained form of the semi-analtic results,
particular attention is paid on the non-universality assumption of the Higgs
mass values and their potential measurable effects on the mass spectra of the
minimal supersymmetric standard model. It is observed that, certain measurables
are almost insensitive to the initial mass choices of the Higgs fields, like
the mass of the light $\mathcal{CP}$-even Higgs boson. On the other hand, large
deviations exist on the mass of the remaining physical Higgs bosons signal that
the allowed parameter space of the model can be probed successfully. For this
aim, in addition to the other physical Higgs bosons, imprints originating from
the heavier chargino ($\tilde \chi^\pm_2$), heavy neutralinos ($\tilde
\chi^0_3$, $\tilde \chi^0_4$) and the light scalar tau ($\tilde \tau_1$) are
necessary and found to be promising.


title: QCD Sum Rule Study of the Masses of Light Tetraquark Scalar Mesons

abstract:
  We study the low-lying scalar mesons of light u, d, s flavors in the QCD sum
rule. Having all possible combinations of tetraquark currents in the local
form, QCD sum rule analysis has been carefully performed. We found that using
the appropriate tetraquark currents, the masses of sigma, kappa, f_0 and a_0
mesons appear in the region of 0.6 -- 1 GeV with the expected ordering. The
results are compared with that of the conventional \bar{q} q currents, where
the masses are considerably larger.


title:
Novel Collective Excitations and the Quasi-Particle Picture of Quarks
  Coupled with a Massive Boson at Finite Temperature

abstract:
  Motivated by the observation that there may exist hadronic excitations even
in the quark-gluon plasma (QGP) phase, we investigate how the properties of
quarks, especially within the quasi-particle picture, are affected by the
coupling with bosonic excitations at finite temperature (T), employing
  Yukawa models with a massive scalar (pseudoscalar) and vector (axial-vector)
boson of mass m. The quark spectral function and the quasi-dispersion relations
are calculated at one-loop order. We find that there appears a three-peak
structure in the quark spectral function with a collective nature when T is
comparable with m, irrespective of the type of boson considered. Such a
multi-peak structure was first found in a chiral model yielding scalar
composite bosons with a decay width. We elucidate the mechanism through which
the new quark collective excitations are realized in terms of the Landau
damping of a quark (an antiquark) induced by scattering with the thermally
excited boson, which gives rise to mixing and hence a level repulsion between a
quark (antiquark) and an antiquark-hole (quark-hole) in the thermally excited
antiquark (quark) distribution. Our results suggest that the quarks in the QGP
phase can be described within an interesting quasi-particle picture with a
multi-peak spectral function. Because the models employed here are rather
generic, our findings may represent a universal phenomenon for fermions coupled
to a massive bosonic excitation with a vanishing or small width. The relevance
of these results to other fields of physics, such as neutrino physics, is also
briefly discussed. In addition, we describe a new aspect of the plasmino
excitation obtained in the hard-thermal loop approximation.


title: Gluonic contribution to $B\to \eta^{(\prime)}$ form factors

abstract:
  We calculate the flavor-singlet contribution to the $B\to\eta^{(\prime)}$
transition form factors from the gluonic content of the $\eta^{(\prime)}$ meson
in the large-recoil region using the perturbative QCD approach. The formulation
for the $\eta$-$\eta'$ mixing in the quark-flavor and singlet-octet schemes is
compared, and employed to determine the chiral enhancement scales associated
with the two-parton twist-3 $\eta^{(\prime)}$ meson distribution amplitudes. It
is found that the gluonic contribution is negligible in the $B\to\eta$ form
factors, and reaches few percents in the $B\to\eta'$ ones. Its impact on the
accommodation of the measured $B\to\eta^{(\prime)} K$ branching ratios in the
perturbative QCD and QCD-improved factorization approaches is elaborated.


title:
Single production of the vector-like top quark in the littlest Higgs
  model at TeV energy $e^{-}\gamma$ colliders

abstract:
  The new colored vector-like heavy fermion $T$ is a crucial prediction in
little Higgs models, which plays a key role in breaking the electroweak
symmetry. The littlest Higgs model is the most economical one among various
little Higgs models. In the context of the littlest Higgs model, we study
single production of the new heavy vector-like quark via $e^{-}\gamma$
collisions and discuss the possibility of detecting this new particle in the
TeV energy $e^{+}e^{-}$ collider(LC). We find that the production cross section
can vary in a wide range($10^{-3}-10^{1}fb$) in most parameter spaces. For the
favorable parameter spaces, the possible signals of the vector-like top quark
$T$ can be detected via $e^{-}\gamma$ collisions in future $LC$ experiment with
$\sqrt{s}=3TeV$ and $\pounds=500fb^{-1}$.


title: Aspects of non leptonic $B_s$ decays

abstract:
  I discuss a model independent determination of the widths of a class of
two-body $\bar{B}_s^0 $ decays induced by $b \to c \bar u d$ and $b \to c \bar
u s$ transitions. The analysis is based on $SU(3)_F$ symmetry and exploits
existing information on $\bar B \to D_{(s)} P$ and $\bar B \to D_{(s)} V$
decays, with $P$ and $V$ a light pseudoscalar or vector meson. The results are
relevant for the $B_s$ physics programmes at the hadron colliders and at the
$e^+ e^-$ factories running at the peak of $\Upsilon(5S)$.


title: The Muon Magnetic Moment and Supersymmetry

abstract:
  The present review is devoted to the muon magnetic moment and its role in
supersymmetry phenomenology. Analytical results for the leading supersymmetric
one- and two-loop contributions are provided, numerical examples are given and
the dominant tan(beta)sign(mu)/M_SUSY^2 behaviour is qualitatively explained.
The consequences of the Brookhaven measurement are discussed. The 2 sigma
deviation from the Standard Model prediction implies preferred ranges for
supersymmetry parameters, in particular upper and lower mass bounds.
Correlations with other observables from collider physics and cosmology are
reviewed. We give, wherever possible, an intuitive understanding of each result
before providing a detailed discussion.


title:
About estimations of an one-photon background in neutrino oscillation
  experiments at low neutrino energies

abstract:
  The possible sources of one-photon radiation as background for quasi-elastic
reaction nu_mu+n to mu^-+p are considered. The ones are relevant in experiments
on determination of oscillation parameters at low neutrino energies (E_nu^lab~1
GeV). The estimation for the cross section of reaction nu_mu+n to mu^-+p+gamma
is given at E_nu^lab=0.7 GeV as 0.65% from the corresponding cross section of
quasi-elastic reaction.


title:
Precision electroweak calculation of the charged current Drell-Yan
  process

abstract:
  We present a detailed study of the charged current Drell-Yan process, which
includes the exact O(alpha) electroweak corrections properly matched with
leading-log effects due to multiple-photon emission, as required by the
experiments at the Tevatron and the LHC. Numerical results for the relevant
observables of single W boson production at hadron colliders are presented. The
impact of the radiative corrections and of some sources of theoretical
uncertainty is discussed in detail. The calculation has been implemented in the
new version of the event generator HORACE, which is available for precision
simulations of the charged current Drell-Yan process.


title: QCD corrections to Higgs physics at the LHC

abstract:
  We summarize the status of QCD corrections for SM Higgs boson production at
hadron colliders and briefly sketch the main search strategies at the LHC.


title: Heavy ions theory review

abstract:
  Some of the new developments in the theory of heavy ion collisions are
reviewed. Much of the last progress have been triggered by the high energies
available at RHIC. In the near future, the LHC will extend the energy reach in
heavy ions by a factor thirty and give access to new QCD regimes characterized
by large densities and temperatures and corresponding modified evolution
equations.


title: Suppression of heavy flavors at RHIC & LHC

abstract:
  Some of the open questions on jet quenching are expected to be clarified by
measuring heavy-flavored mesons at high transverse momentum. The formalism
based on radiative in-medium energy-loss, which describes other high-pt results
at RHIC, gives definite predictions for the suppression of charm and beauty
quarks. However, the uncertainties from both contributions to the observed
electrons make the interpretation of the data difficult due to the absence of a
well calibrated benchmark. We review the present situation as well as the
consequences for the future LHC. We also comment on the use of heavy flavored
jet angular correlations as an additional tool to study the underline dynamics
of jet quenching.


title: Field Theory and Standard Model

abstract:
  This is a short introduction to the Standard Model and the underlying
concepts of quantum field theory.


title: Complementary strategy of New Physics searches in B-sector

abstract:
  We discuss a possible strategy for studies of a particular next-to-minimal
flavor violation New Physics (NP) scenario at LHC. Our analysis is based on
comparison of particular CKM matrix elements, which can be obtained from the
processes dominated by diagrams of different topology (tree, penguin and box).
We argue that the standard formalism of the overall unitarity triangle fit is
not suitable for searches of the chosen NP. We also stress the importance of
lattice computations of some relevant hadronic inputs.


title:
Combined flavor symmetry violation and lepton number violation in
  neutrino physics

abstract:
  Heavy singlet neutrinos admit Majorana masses which are not possible for the
Standard Model particles. This suggest new possibilities for generating the
masses and mixing angles of light neutrinos. We present a model of neutrino
physics which combines the source of lepton number violation with the flavor
symmetry responsible for the hierarchy in the charged lepton and quark sector.
This is accomplished by giving the scalar field effecting the lepton number
violation a nonzero charge under the horizontal flavor symmetry. We find an
economical model which is consistent with the measured values of the
atmospheric and solar neutrino mass-squares and mixing angles.


title:
Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino
  oscillation hypothesis

abstract:
  We investigate the extent to which leptonic CP-violation in (3+2) sterile
neutrino models leads to different oscillation probabilities for
$\bar{\nu}_{\mu}\to\bar{\nu}_e$ and $\nu_{\mu}\to\nu_e$ oscillations at
MiniBooNE. We are using a combined analysis of short-baseline (SBL) oscillation
results, including the LSND and null SBL results, to which we impose additional
constraints from atmospheric oscillation data. We obtain the favored regions in
MiniBooNE oscillation probability space for both (3+2) CP-conserving and (3+2)
CP-violating models. We further investigate the allowed CP-violation phase
values and the MiniBooNE reach for such a CP violation measurement. The
analysis shows that the oscillation probabilities in MiniBooNE neutrino and
antineutrino running modes can differ significantly, with the latter possibly
being as much as three times larger than the first. In addition, we also show
that all possible values of the single CP-violation phase measurable at short
baselines in (3+2) models are allowed within 99% CL by existing data.


title: New Physics and CP Violation in Singly Cabibbo Suppressed D Decays

abstract:
  We analyze various theoretical aspects of CP violation in singly Cabibbo
suppressed (SCS) D-meson decays, such as $D \to K K,\pi \pi$. In particular, we
explore the possibility that CP asymmetries will be measured close to the
present level of experimental sensitivity of $O(10^{-2})$. Such measurements
would signal new physics. We make the following points: (i) The mechanism at
work in neutral D decays could be indirect or direct CP violation (or both).
(ii) One can experimentally distinguish between these possibilities. (iii) If
the dominant CP violation is indirect, then there are clear predictions for
other modes. (iv) Tree-level direct CP violation in various known models is
constrained to be much smaller than $10^{-2}$. (v) SCS decays, unlike Cabibbo
favored or doubly Cabibbo suppressed decays, are sensitive to new contributions
from QCD penguin operators and especially from chromomagnetic dipole operators.
This point is illustrated with supersymmetric gluino-squark loops, which can
yield direct CP violating effects of $O(10^{-2})$.


title:
Phenomenology of Littlest Higgs Model with T-parity: including effects
  of T-odd fermions

abstract:
  We study the collider phenomenology of a Littlest Higgs model with T-parity.
We first stress the important role of the T-odd SU(2) doublet fermions
(introduced to make the model T-parity invariant) in high energy scattering
processes, such as $q\bar{q}\to W_H^+ W_H^-$ where $W_H^\pm$ are the T-odd
partners of $W$-bosons. Because the mass of the T-odd SU(2) doublet fermions
cannot be too heavy to be consistent with low energy data, they can be
copiously produced at the CERN Large Hadron Collider (LHC). Therefore, we study
the collider phenomenology of the model with emphasis on the contributions of
the T-odd fermion to the production of the heavy T-parity partners (either
bosons or fermions) of the usual particles at the LHC. The production cross
sections and the decay branching ratios of the new heavy particles are
classified and various experimental signatures are discussed.


title: Testing the SUSY-QCD Yukawa coupling in a combined LHC/ILC analysis

abstract:
  In order to establish supersymmetry (SUSY) at future colliders, the identity
of gauge couplings and the corresponding Yukawa couplings between gauginos,
sfermions and fermions needs to be verified. Here a first phenomenological
study for determining the Yukawa coupling of the SUSY-QCD sector is presented,
using a method which combines information from LHC and ILC.


title: The Little Hierarchy in Universal Extra Dimensions

abstract:
  In the standard model in universal extra dimensions (UED) the mass of the
Higgs field is driven to the cutoff of the higher-dimensional theory. This
re-introduces a small hierarchy since the compactification scale 1/R should not
be smaller than the weak scale. In this paper we study possible solutions to
this problem by considering five-dimensional theories where the Higgs field
potential vanishes at tree level due to a global symmetry. We consider two
avenues: a Little Higgs model and a Twin Higgs model. An obstacle for the
embedding of these four-dimensional models in five dimensions is that their
logarithmic sensitivity to the cutoff will result in linear divergences in the
higher dimensional theory. We show that, despite the increased cutoff
sensitivity of higher dimensional theories, it is possible to control the Higgs
mass in these two scenarios. For the Little Higgs model studied, the
phenomenology will be significantly different from the case of the standard
model in UED. This is due to the fact that the compactification scale
approximately coincides with the scale where the masses of the new states
appear. For the case of the Twin Higgs model, the compactification scale may be
considerably lower than the scale where the new states appear. If it is as low
as allowed by current limits, it would be possible to experimentally observe
the standard model Kaluza-Klein states as well as a new heavy quark. On the
other hand, if the compactification scale is higher, then the phenomenology at
colliders would coincide with the one for the standard model in UED.


title: What we can learn from atmospheric neutrinos

abstract:
  Physics potential of future measurements of atmospheric neutrinos is
explored. Observation of $\Delta m^2_{21}$ driven sub-dominant effects and
$\theta_{13}$ driven large matter effects in atmospheric neutrinos can be used
to study the deviation of $\theta_{23}$ from maximality and its octant.
Neutrino mass hierarchy can be determined extremely well due to the large
matter effects. New physics can be constrained both in standard atmospheric
neutrino experiments as well as in future neutrino telescopes.


title:
On Equations for the Multi-quark Bound States in Nambu--Jona-Lasinio
  Model

abstract:
  In present report we review some preliminary results of investigation of
higher orders of mean-field expansion for Nambu--Jona-Lasinio model. We discuss
first results of investigation of next-to-next-to-leading order of mean-field
expansion equations for four-quark and three-quark Green functions. We have
considered equations for Green functions of Nambu--Jona-Lasinio model in
mean-field expansion up to third order.


title: Investigating the tetraquark structure of the new mesons

abstract:
  Using the QCD sum rule approach we investigate the possible four-quark
structure of the recently observed mesons $D_{sJ}^{+}(2317)$, firstly observed
by BaBaR, X(3872), firstly observed by BELLE and $D_0^{*0}(2308)$ observed by
BELLE. We use diquark-antidiquark currents and work in full QCD, without
relying on $1/m_c$ expansion. Our results indicate that a four-quark structure
is acceptable for these mesons.


title:
Chromomagnetic instability in two-flavor quark matter at nonzero
  temperature

abstract:
  We calculate the effective potential of the 2SC/g2SC phases including vector
condensates ($<gA_z^6>$ and $<gA_z^8>$) and study the gluonic phase and the
single plane-wave Larkin-Ovchinnikov-Fulde-Ferrell state at nonzero
temperature. Our analysis is performed within the framework of the gauged
Nambu--Jona-Lasinio model. We compute potential curvatures with respect to the
vector condensates and investigate the temperature dependence of the Meissner
masses squared of gluons of color 4--7 and 8 in the neutral 2SC/g2SC phases.
The phase diagram is presented in the plane of temperature and coupling
strength. The unstable regions for gluons 4--7 and 8 are mapped out on the
phase diagram. We find that, apart from the case of strong coupling, the
2SC/g2SC phases at low temperatures are unstable against the vector
condensation until the temperature reaches tens of MeV.


title:
Comparison of the non-uniform chiral and 2SC phases at finite
  temperatures and densities

abstract:
  We study the phase diagram of the strongly interacting matter at finite
temperatures and densities including 2SC, uniform chiral and non-uniform chiral
phases within the Nambu - Jona-Lasinio model in the mean field approximation.


title: Towards a realistic neutrino mass formula

abstract:
  A new option of parameter constraint is described for the recently proposed
neutrino mass formula involving primarily three free parameters. The option
implies the vanishing of a part of mass formula for the lowest mass neutrino,
the part which may - in an intuitive model - be identified with its formal
"intrinsic selfenergy". However, its actual mass induced then by another part
of mass formula is considerable. In this option, our neutrino mass formula
predicts all three neutrino masses as m_1 \sim 2.5 x 10^{-3} eV, m_2 \sim 9.3 x
10^{-3} eV and m_3 \sim 5.0 x 10^{-2} eV, when two experimental estimates
\Delta m^2_{21} \sim 8.0 x 10^{-5} eV^2 and \Delta m^2_{32} \sim 2.4 x 10^{-3}
eV^2 are applied as an input.


title: Self-consistent quasiparticle model for quark-gluon plasma

abstract:
  Here we present a self-consistent quasi-particle model for quark-gluon plasma
and apply it to explain the non-ideal behaviour seen in lattice simulations.
The basic idea, borrowed from electrodynamic plasma, is that the gluons acquire
mass as it propagates through plasma due to collective effects and is
approximately equal to the plasma frequency. The statistical mechanics and
thermodynamics of such a system is studied by treating it as an ideal gas of
massive gluons. Since mass or plasma frequency depends on density, which itself
is a thermodynamic quantity, the whole problem need to be solved
self-consistently.


title:
The relevance of virtual electroweak effects in the overall $t$-channel
  single top production at LHC

abstract:
  We compute the complete one loop electroweak effects in the MSSM for the
eight processes of single top (and single antitop) production in the
$t$-channel at hadron colliders, generalizing a previous analysis performed for
the dominant $dt$ final state. The results are quite similar for all processes,
showing an impressively large Standard Model effect and a generally modest
genuine SUSY contribution in the mSUGRA scenario. The one loop effect on the
total rate is shown and the possibility of measuring it at LHC is discussed.


title: Phenomenological study of two-gluon densities

abstract:
  The decay of colour neutral 2-gluon systems in qqbar and 2q2qbar has been
simulated with the Monte-Carlo method, taking into account an effective 1-gluon
exchange interaction between the emitted quarks, which was folded with a
2-gluon density determined self-consistently. Finite 2-gluon densities were
obtained with a mean square radius <r^2> of about 0.5 fm^2. These give a
significant contribution to the 2-gluon field correlators and the gluon
propagator from lattice QCD. By solving a relativistic Schroedinger equation
the binding potential of the 2-gluon density is computed. By the relation
2g->(qqbar)^n this corresponds to the confinement potential between quarks,
which is in excellent agreement with the confinement potential from lattice
QCD. The lowest bound state in this potential allows an interpretation of the
2-gluon mass as binding energy of the two gluons. The lowest glueball with
Eo=0.68+-0.10 GeV is in the mass region of the scalar sigma(550), with a mass
significantly lower then obtained in lattice QCD simulations. However, the
first and second radial excitations agree with the lattice results.


title: D-dimensional unitarity cut method

abstract:
  We develop a unitarity method to compute one-loop amplitudes with massless
propagators in d=4-2*epsilon dimensions. We compute double cuts of the loop
amplitudes via a decomposition into a four-dimensional and a
-2*epsilon-dimensional integration. The four-dimensional integration is
performed using spinor integration or other efficient techniques. The remaining
integral in -2*epsilon dimensions is cast in terms of bubble, triangle, box,
and pentagon master integrals using dimensional shift identities. The method
yields results valid for arbitrary values of epsilon.


title: The Compton effect in a strongly magnetized plasma

abstract:
  The process of Compton scattering $\gamma e^{\pm} \to \gamma e^{\pm}$ in a
strongly magnetized medium of arbitrary temperature and zeroth chemical
potential was considered. The analytical expressions for the partial cross
section in the small concentration limit of the electron-positron plasma are
obtained. The numerical estimations for the partial probabilities of this
process are presented by taking into account the photon dispersion in a strong
magnetic field and charge-symmetric plasma of arbitrary temperature. The
comparision of the scattering probability with photon splitting in a plasma was
investigated. The astrophysical applications of the obtaining results are
considered.


title: Constraining {\it CP} violation in a softly broken $A_4$ symmetric Model

abstract:
  To understand the mass spectra of charged lepton and neutrino $A_4$ symmetry
has been proposed in addition with the Standard $SU(2)_L\times U(1)_Y$ model.
We break $A_4$ symmetry softly and the deviation from the tri-bimaximal mixing
arises due to Zee mechanism. In the present work, we express two mixing angles
$\theta_{13}$ and $\theta_{23}$ in terms of a single model parameter and
experimental observables, such as, mixing angle $\theta_{12}$, mass squared
differences $\Delta m^2_{21}$ and $\Delta m^2_{32}$. Using the experimental
values of $\theta_{23}$, $\theta_{12}$, $\Delta m^2_{21}$ and $\Delta m^2_{32}$
we restrict the model parameter and we predict $\theta_{13}$. This model gives
rise to $\theta_{13}\simeq 11^\circ$ if we allow $1\sigma$ deviation of
$\theta_{23}$ and $2^\circ$ deviation of $\theta_{12}$ from their best fit
values. Utilizing all those constraints, we explore the extent of CP violation
parameter $J_{\rm CP}$ in the present model and found a value of $J_{\rm
CP}\approx 2.65\times 10^{-3}$ (for $1\sigma$ deviation of $\theta_{23}$ and
$2^\circ$ deviation of $\theta_{12}$) consistent with the other neutrino
experimental results. We have studied the mass pattern of neutrino and
neutrinoless double beta decay $(\beta\beta_{0\nu})$ parameter $|(M_\nu)_{ee}|$
in this model.


title:
When renormalizability is not sufficient: Coulomb problem for vector
  bosons

abstract:
  The Coulomb problem for vector bosons W incorporates a known difficulty; the
boson falls on the center. In QED the fermion vacuum polarization produces a
barrier at small distances which solves the problem. In a renormalizable SU(2)
theory containing vector triplet (W^+,W^-,gamma) and a heavy fermion doublet F
with mass M the W^- falls on F^+, to distances r ~ 1/M, where M can be made
arbitrary large. To prevent the collapse the theory needs additional light
fermions, which switch the ultraviolet behavior of the theory from the
asymptotic freedom to the Landau pole. Similar situation can take place in the
Standard Model. Thus, the renormalizability of a theory is not sufficient to
guarantee a reasonable behavior at small distances for non-perturbative
problems, such as a bound state problem.


title: Hadron Spectroscopy: Theory and Experiment

abstract:
  Many new results on hadron spectra have been appearing in the past few years
thanks to improved experimental techniques and searches in new channels. New
theoretical techniques including refined methods of lattice QCD have kept pace
with these developments. Much has been learned about states made of both light
(u, d, and s) and heavy (c, b) quarks. The present review treats light-quark
mesons, glueballs, hybrids, particles with a single c or b quark, charmonium,
and bottomonium states. Some prospects for further study are noted.


title:
Possible links between the liquid-gas and deconfinement-hadronization
  phase transitions

abstract:
  It is commonly accepted that strongly interacting matter has several phase
transitions in different domains of temperature and baryon density. In this
contribution I discuss two most popular phase transitions which in principle
can be accessed in nuclear collisions. One of them, the liquid-gas phase
transition, is well established theoretically and studied experimentally in
nuclear multifragmentation reactions at intermediate energies. The other one,
the deconfinement-hadronization phase transition, is at the focus of present
and future experimental studies with relativistic heavy-ion beams at SPS, RHIC
and LHC. Pssible links between these two phase transitions are identified from
the viewpoint of their manifestation in violent nuclear collisions.


title: Quarkonium Binding and Dissociation: The Spectral Analysis of the QGP

abstract:
  In statistical QCD, the thermal properties of the quark-gluon plasma can be
determined by studying the in-medium behaviour of heavy quark bound states. The
results can be applied to quarkonium production in high energy nuclear
collisions, if these indeed form a fully equilibrated QGP. Modifications could
arise if an initial charm excess persists in the collision evolution and causes
quarkonium regeneration at hadronization.


title:
On the unlocking of color and flavor in color-superconducting quark
  matter

abstract:
  The role of the strange quark mass for the phase structure of QCD at
non-vanishing densities is studied by employing a recently developed
self-consistent truncation scheme for the Dyson-Schwinger equations of the
quark propagators in Landau gauge. Hereby the medium modification of the
effective quark interaction by the polarization of gluons is implemented.
Taking into account this effect results in significantly smaller dynamical
quark masses at the Fermi surface. Due to this reduction the color-flavor
locked phase is always the preferred color-superconducting phase at zero
temperature and for a realistic strange quark mass.


title: Magnetic Induced Axion Mass

abstract:
  We study the effect of a uniform magnetic field on the dynamics of axions. In
particular, we show that the Peccei-Quinn symmetry is explicitly broken by the
presence of an external magnetic field. This breaking is induced by the
non-conservation of the magnetic helicity and generates an electromagnetic
contribution to the axion mass. We compute the magnetic axion mass in one loop
approximation, with no restriction on the intensity of the magnetic field, and
including thermal effects.


title: Production of htt_bar and htT_bar in littlest Higgs model with T-parity

abstract:
  In the littlest Higgs model with T-parity, which predicts a pair of T-even
and T-odd partners for the top quark, the top quark interactions are altered
with respect to the Standard Model predictions and deviation will manifest in
various top quark processes. In this work we examine the effects in htt_bar
productions at the ILC and LHC. We find that in the allowed parameter space,
the cross sections can be significantly deviated from the Standard Model
predictions and thus provide a good test for the littlest Higgs model with
T-parity. We also examine the new production channel, the htT_bar or hTt_bar
production, at the LHC, which give the same final states as htt_bar production
due to the dominant decay T->Wb. We find that, compared with htt_bar
production, this new production channel can have a sizable production rate for
a T-quark below TeV scale. Such a production will be counted into htt_bar
events or possibly extracted from htt_bar events, depending on if we can
distinguish the T-quark from the top quark from mass reconstructions.


title: Estimates of isospin breaking contributions to baryon masses

abstract:
  We estimate the isospin breaking contributions to the baryon masses which we
analyzed recently using a loop expansion in the heavy baryon approximation to
chiral effective field theory. To one loop, the isospin breaking corrections
come from the effects of the $d, u$ quark mass difference, the Coulomb and
magnetic moment interactions, and effective point interactions attributable to
color-magnetic effects. The addition of the first meson loop corrections
introduces new structure. We estimate the resulting low-energy, long-range
contributions to the mass splittings by regularizing the loop integrals using
connections to dynamical models for finite-size baryons. We find that the
resulting contributions to the isospin breaking corrections are of the right
general size, have the correct sign pattern, and agree with the experimental
values within the margin of error.


title: Coherent multiple scattering effect in DIS

abstract:
  We present a QCD calculation of the coherent multiple scattering effect on
single hadron production in semi-inclusive lepton-nucleus deep inelastic
scattering (DIS). We show that the destructive interference of coherent
multiple scattering leads to suppression in hadron productions. The suppression
is similar to the expectations of energy loss calculations. We compare our
calculation with experimental data.


title: Neutrinos: Windows to New Physics

abstract:
  After briefly reviewing how the symmetries of the Standard Model (SM) are
affected by neutrino masses and mixings, I discuss how these parameters may
arise from GUTs and how patterns in the neutrino sector may reflect some
underlying family symmetry. Leptogenesis provides a nice example of how
different physical phenomena may be connected to the same neutrino window of
physics beyond the SM. I end with some comments on the LSND signal and briefly
discuss the idea that neutrinos have environment dependent masses.


title: Heavy Quarkonia Above Deconfinement

abstract:
  In this talk I summarize our current understanding of quarkonium states above
deconfinement based on phenomenological and lattice QCD studies.


title: Ground State Quarkonium Spectral Functions Above Deconfinement

abstract:
  We discuss the temperature-dependence of S-wave quarkonium spectral functions
in a nonrelativistic Green's function approach and compare these to lattice QCD
results.


title:
Gluonic Pole Cross Sections and Single Spin Asymmetries in Hadron-Hadron
  Scattering

abstract:
  The gauge-links connecting the parton field operators in the hadronic matrix
elements appearing in the transverse momentum dependent distribution functions
give rise to T-odd effects. Due to the process-dependence of the gauge-links
the T-odd distribution functions appear with different pre-factors. A
consequence is that in the description of single spin asymmetries the parton
distribution and fragmentation functions are convoluted with gluonic pole cross
sections rather than the basic partonic cross sections. In this paper we
calculate the gluonic pole cross sections encountered in single spin
asymmetries in hadron-hadron scattering. The case of back-to-back pion
production in polarized proton-proton scattering is worked out explicitly. It
is shown how T-odd gluon distribution functions originating from gluonic pole
matrix elements appear in twofold.


title: Scalar mesons: in search of the lightest glueball

abstract:
  According to the QCD expectations the lightest glueball should be a scalar
particle (J^{PC}=0^{++}). Different scenarios have been considered for a
classification of these states but -- despite considerable progress in recent
years -- the experimental basis for various parameters is still rather weak. We
present a new analysis of the elastic and charge exchange pi pi scattering
between 1000 and 1800 MeV. A unique solution is selected which shows clear
evidence for f_0(1500) and a broad state (\sigma or ``f_0(1000)''), but there
is no evidence for f_0(1370) at a level of \gtrsim 10% branching ratio to pi
pi. Arguments in favour of the broad state to be a glueball are summarized.


title:
Higgs boson pair production process $e^+e^-\to ZHH$ in the littlest
  Higgs model at the ILC

abstract:
  The physics prospect at future linear $e^{+}e^{-}$ colliders for the study of
the Higgs triple self-coupling via the process of $e^{+}e^{-}\to ZHH$ is
investigated. In this paper, we calculate the contribution of the new particles
predicted by the littlest Higgs model to the cross sections of this process in
the future high energy $e^{+}e^{-}$ collider($ILC$). The results show that, in
the favorable parameter spaces preferred by the electroweak precision, the
deviation of the total cross sections from its $SM$ value varies from a few
percent to tens percent, which may be detected at the future $ILC$ experiments
with $\sqrt{s}$=500GeV.


title: The FP420 R&D Project at the LHC

abstract: A brief review of the FP420 R&D project at the LHC is presented


title: Anomaly Mediation and Dimensional Transmutation

abstract:
  We show how a sparticle spectrum characteristic of anomaly mediation can
arise from a theory whose Lagrangian contains no explicit mass scale. The scale
of supersymmetry breaking is governed by the gravitino mass, which is the
vacuum expectation value of the F-term of the conformal compensator field, and
the tachyonic slepton problem is resolved by the breaking of a U(1) gauge
symmetry at a scale determined by dimensional transmutation.


title: Charge Fluctuations along the QCD phase boundary

abstract:
  We discuss the properties of the net--quark and isovector fluctuations along
the chiral phase transition line in the plane spanned by temperature and baryon
chemical potential. Our results are obtained in terms of the
Nambu--Jona-Lasinio (NJL) model within the mean-field approximation. The model
is formulated at the finite temperature and for non-vanishing net--quark and
the isospin chemical potentials. The fermion interactions are controlled by the
strength of the scalar and vector couplings in the iso-scalar and iso-vector
channels of constituent quarks. We explore properties and differences in the
behavior of the net--quark number and isovector susceptibilities for different
values of thermal parameters near the phase transition. We argue that any
non-monotonic behavior of the net--quark number susceptibility along the phase
transition boundary is an excellent probe of the existence and the position of
the second order endpoint in the QCD phase diagram.


title:
Pole Approximation for the pion eletromagnetic form factor within
  light-front dynamics

abstract:
  We carefully investigate the reliability of the propagator Pole
Approximation, i.e, the approximation of retaining only the propagator in the
evaluation of the Mandelstam covariant expression for the eletromagnetic
current of the pion. Different frames are analyzed, in order to find the most
suitable one for calculating the pion form factor within the proposed
approximation. It turns out that approximation is more accurate in the frame
where q^+ is maximal. The relevance of the Pole Approximation is briefly
discussed in view of calculations of hadrons factors basead wave functions
generate by dynamical models.


title:
On the equivalence of Reggeon field theory in zero transverse dimensions
  and reaction-diffusion processes

abstract:
  The Reggeon field theory in zero transverse dimensions is investigated. Two
versions of the theory are considered: one that allows at most triple pomeron
interactions and the other that embodies an additional 2-->2 quartic Reggeon
coupling. The behavior of the scattering amplitude at asymptotic rapidities is
obtained in both cases. In an s-channel picture of the high energy scattering
both models can be viewed as reaction-diffusion processes. We derive known
results in Reggeon field theory rather easily using the reaction-diffusion
formalism. We find that some results which are surprising from the Reggeon
field theory point of view turn out to have a simple interpretation from the
reaction-diffusion point of view.


title: Probing leptoquark production at IceCube

abstract:
  We emphasize the inelasticity distribution of events detected at the IceCube
neutrino telescope as an important tool for revealing new physics. This is
possible because the unique energy resolution at this facility allows to
separately assign the energy fractions for emergent muons and taus in neutrino
interactions. As a particular example, we explore the possibility of probing
second and third generation leptoquark parameter space (coupling and mass). We
show that production of leptoquarks with masses \agt 250 GeV and diagonal
generation couplings of O(1) can be directly tested if the cosmic neutrino flux
is at the Waxman-Bahcall level.


title: Heavy Meson Molecules in Effective Field Theory

abstract:
  We consider the implications from the possibility that the recently observed
state X(3872) is a meson-antimeson molecule. We write an effective Lagrangian
consistent with the heavy-quark and chiral symmetries needed to describe
X(3872). We explore the consequences of the assumption that X(3872) is a
molecular bound state of D^{*0} and anti-D^0 mesons for the existence of bound
states in the D^0-anti-D^0 and D^{*0}-anti-D^{*0}.


title: Towards the European strategy for particle physics: the Briefing Book

abstract:
  This document was prepared as part of the briefing material for the Workshop
of the CERN Council Strategy Group, held in DESY Zeuthen from 2nd to 6th May
2006. It gives an overview of the physics issues and of the technological
challenges that will shape the future of the field, and incorporates material
presented and discussed during the Symposium on the European Strategy for
Particle Physics, held in Orsay from 30th January to 2nd February 2006,
reflecting the various opinions of the European community as recorded in
written submissions to the Strategy Group and in the discussions at the
Symposium.


title: Hunting the Scalar Glueball: Prospects for BES III

abstract:
  The search for the ground state scalar glueball G_0 is reviewed. Spin zero
glueballs will have unique dynamical properties if the <G_0|\bar qq> amplitude
is suppressed by chiral symmetry, as it is to all orders in perturbation
theory: for instance, mixing of G_0 with \bar qq mesons would be suppressed,
radiative J/psi decay would be a filter for new physics in the spin zero
channel, and the decay G_0 \to \bar KK could be enhanced relative to G_0 \to
\pi \pi. These properties are consistent with the identification of f_0(1710)
as the largely unmixed ground state scalar glueball, while recent BES data
implies that f_0(1500) does not contain the dominant glueball admixture. Three
hypotheses are discussed: that G_0 is 1) predominantly f_0(1500) or 2)
predominantly f_0(1710) or 3) is strongly mixed between f_0(1500) and
f_0(1710).


title: Thermodynamics of the PNJL model

abstract:
  QCD thermodynamics is investigated by means of the Polyakov-loop-extended
Nambu Jona-Lasinio (PNJL) model, in which quarks couple simultaneously to the
chiral condensate and to a background temporal gauge field representing
Polyakov loop dynamics. The behaviour of the Polyakov loop as a function of
temperature is obtained by minimizing the thermodynamic potential of the
system. A Taylor series expansion of the pressure is performed. Pressure
difference and quark number density are then evaluated up to sixth order in
quark chemical potential, and compared to the corresponding lattice data. The
validity of the Taylor expansion is discussed within our model, through a
comparison between the full results and the truncated ones.


title: Glueball enhancement by color de-confinement

abstract:
  High energy heavy ion collisions lead to the formation of a strong coupling
de-confined phase in which the lightest glueballs are numerous and stable. We
analyze how their properties manifest themselves in experimental spectra and
show that they provide a good signature for color de-confinement.


title: Flavor Symmetry and Vacuum Aligned Mass Textures

abstract:
  The mass matrix forms of quarks and leptons are discussed in theory with
permutation flavor symmetry. The structure of scalar potential is analyzed in
case that electroweak doublet Higgs fields have non-trivial flavor symmetry
charges. We find that realistic forms of mass matrices are obtained dynamically
in the vacuum of the theory, where some of Higgs bosons have vanishing
expectation values which lead to vanishing elements in quark and lepton mass
matrices. Mass textures are realized in the true vacuum and their positions are
controlled by flavor symmetry. An interesting point is that, due to the flavor
group structure, the up and down quark mass matrices are automatically made
different in the vacuum, which lead to non-vanishing generation mixing. It is
also discussed that flavor symmetry is needed to be broken in order not to have
too light scalars. The lower bounds of Higgs masses are derived from the
experimental data of flavor-changing rare processes such as the neutral K meson
mixing.


title: Backward Compton Scattering in Strong Uniform Magnetic Field

abstract:
  In strong uniform magnetic field, the vacuum Non-Commutative Plane (NCP)
caused by the lowest Landau level(LLL) effect and the QED with NCP (QED-NCP)
are studied. Being similar to the theory of Quantum Hall effect, an effective
filling factor $f(B)$ is introduced to character the possibility that the
electrons stays on LLL. The backward Compton scattering amplitudes of QED-NCP
are derived, and the differential cross sections for the process with polarized
initial electrons and photons are calculated. The existing Spring-8's data has
been analyzed primitively and some hints for QED-NCP effects are shown. We
propose to precisely measure the differential cross sections of the backward
Compton scattering in perpendicular magnetic field experimentally, which may
lead to reveal the effects of QED-NCP.
  PACS number: 12.20.Ds; 11.10.Nx; 71.70.Di; 73.43.Fj.


title: Tetraquarks and Pentaquarks in String Models

abstract:
  We consider the production and decay of multiquark systems in the framework
of string models where the hadron structure is determined by valence quarks
together with string junctions. We show that the low mass multiquark resonances
can be very narrow.


title: D_{s0}^+(2317) as an iso-triplet four-quark meson

abstract:
  Although assigning D_{s0}^+(2317) to the I_3=0 component of iso-triplet
four-quark mesons is favored by experiments, its neutral and doubly charged
partners have not yet been observed. It is discussed why they were not observed
in inclusive e^+e^- annihilation experiments and that they can be observed in B
decays.


title: Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate

abstract:
  A new class of enhanced non-perturbative corrections to the inclusive
B->X_s+gamma decay rate is identified, which contribute first at order
Lambda/m_b in the heavy-quark expansion and cannot be described using a local
operator product expansion. Instead, these effects are described in terms of
hadronic matrix elements of non-local operators with component fields separated
by light-like distances. They contribute to the high-energy part of the
photon-energy spectrum but do not reduce to local operators when an integral
over energy is taken to obtain the total inclusive decay rate. The dominant
corrections depend on the flavor of the B-meson spectator quark and are
described by tri-local four-quark operators. Their contribution is estimated
using the vacuum insertion approximation. The corresponding uncertainty in the
total decay rate is found to be at the few percent level. This new effect
accounts for the leading contribution to the rate difference between B^- and
B^0 mesons.


title:
Azimuthal and single spin asymmetry in deep-inelastic lepton-nucleon
  scattering

abstract:
  We derive a general framework for describing semi-inclusive deep-inelastic
lepton-nucleon scattering in terms of the unintegrated parton distributions and
other higher twist parton correlations. Such a framework provides a consistent
approach to the calculation of inclusive and semi-inclusive cross sections
including higher twist effects. As an example, we calculate the azimuthal
asymmetries to the order of 1/Q in semi-inclusive process with transversely
polarized target. A non-vanishing single-spin asymmetry in the ``triggered
inclusive process'' is predicted to be 1/Q suppressed with a part of the
coefficient related to a moment of the Sivers function.


title: Thermodynamics of electroweak matter

abstract:
  This paper is a slightly modified version of the introductory part of a PhD
thesis, also containing the articles hep-ph/0303019, hep-ph/0510375 and
hep-ph/0512177. We provide a short history of the research of electroweak
thermodynamics and a brief introduction to the theory as well as to the
necessary theoretical tools needed to work at finite temperatures. We then
review computations regarding the pressure of electroweak matter at high
temperatures (the full expression of the perturbative expansion of the pressure
is given in the appendix) and the electroweak phase diagram at finite chemical
potentials. Finally, we compare electroweak and QCD thermodynamics.


title: One gluon, two gluon: multigluon production via high energy evolution

abstract:
  We develop an approach for calculating the inclusive multigluon production
within the JIMWLK high energy evolution. We give a formal expression of
multigluon cross section in terms of a generating functional for arbitrary
number of gluons $n$. In the dipole limit the expression simplifies
dramatically. We recover the previously known results for single and double
gluon inclusive cross section and generalize those for arbitrary multigluon
amplitude in terms of Feynman diagramms of Pomeron - like objects coupled to
external rapidity dependent field $s(\eta)$. We confirm the conclusion that the
AGK cutting rules in general are violated in multigluon production. However we
present an argument to the effect that for doubly inclusive cross section the
AGK diagramms give the leading contribution at high energy, while genuine
violation only occurs for triple and higher inclusive gluon production. We
discuss some general properties of our expressions and suggest a line of
argument to simplify the approach further.


title:
Emanations of Dark Matter: Muon Anomalous Magnetic Moment, Radiative
  Neutrino Mass, and Novel Leptogenesis at the TeV Scale

abstract:
  The evidence for dark matter signals a new class of particles at the TeV
scale, which may manifest themselves indirectly through loop effects. In a
simple model we show that these loop effects may be responsible for the
enhanced muon anomalous magnetic moment, for the neutrino mass, as well as for
leptogenesis in a novel way. This scenario can be verified at LHC experiments.


title: Mixing of Scalar Glueball and Scalar Quarkonia

abstract:
  The isosinglet scalar mesons $f_0(1710)$, $f_0(1500)$, $f_0(1370)$ and their
mixing are studied. Two recent lattice results are employed as the starting
point; one is the approximate SU(3) symmetry in the scalar sector above 1 GeV
for the connected insertion part without $q\bar q$ annihilation, and the other
is the scalar glueball mass at 1710 MeV in the quenched approximation. In the
SU(3) symmetry limit, $f_0(1500)$ becomes a pure SU(3) octet and is degenerate
with $a_0(1450)$, while $f_0(1370)$ is mainly an SU(3) singlet with a slight
mixing with the scalar glueball which is the primary component of $f_0(1710)$.
These features remain essentially unchanged even when SU(3) breaking is taken
into account. The observed enhancement of $\omega f_0(1710)$ production over
$\phi f_0(1710)$ in hadronic $J/\psi$ decays and the copious $f_0(1710)$
production in radiative $J/\psi$ decays lend further support to the prominent
glueball nature of $f_0(1710)$.


title: Restoration of QCD classical symmetries in excited hadrons

abstract:
  Restoration of chiral and $U(1)_A$ symmetries in excited hadrons is reviewed.
A connection of these restorations with the semiclassical regime in highly
excited hadron is discussed.
  A solvable confining field-theoretical toy model that exhibits chiral
restoration is presented. Implications of the string description of the highly
excited hadrons that suggests an additional dynamical symmetry of the spectra
on the top of $U(2)_L \times U(2)_R$ are presented.


title:
Three loop anomalous dimensions of higher moments of the non-singlet
  twist-2 Wilson and transversity operators in the MSbar and RI' schemes

abstract:
  We compute the anomalous dimension of the third and fourth moments of the
flavour non-singlet twist-2 Wilson and transversity operators at three loops in
both the MSbar and RI' schemes. To assist with the extraction of estimates of
matrix elements computed using lattice regularization, the finite parts of the
Green's function where the operator is inserted in a quark 2-point function are
also provided at three loops in both schemes.


title: Estimate of BR(B -> X_s gamma) at O(alpha_s^2)

abstract:
  Combining our results for various O(alpha_s^2) corrections to the weak
radiative B-meson decay, we are able to present the first estimate of the
branching ratio at the next-to-next-to-leading order in QCD. We find BR(B ->
X_s gamma) = (3.15 +_ 0.23) x 10^-4 for E_gamma > 1.6 GeV in the B-meson rest
frame. The four types of uncertainties: non-perturbative (5%), parametric (3%),
higher-order (3%) and m_c-interpolation ambiguity (3%) have been added in
quadrature to obtain the total error.


title: Antiproton polarization induced by lepton interactions

abstract:
  We present expressions for electromagnetic helicity amplitudes and spin
observables for any elastic spin 1/2 - spin 1/2 scattering to first order in
QED. In particular all electromagnetic helicity amplitudes and spin observables
for elastic antiproton-electron and antiproton-proton scattering via single
t-channel photon exchange are presented. Spin observables are required to
describe the rate of increase of polarization in spin filtering. The PAX
collaboration at GSI Darmstadt is interested in the buildup of polarization of
an antiproton beam by repeated interaction with a hydrogen gas target in a
storage ring. In order for the beam particles to remain in the ring after
scattering it is important to consider small angle scattering, hence small
momentum transfer t. In the low momentum transfer region electromagnetic
effects dominate the hadronic effects. Of immediate importance is whether the
polarization of an antiproton beam can be built up by spin filtering off
polarized electrons either in a target or in a beam. We present the theoretical
background for this discussion.


title:
The Higgs intense--coupling regime in constrained SUSY models and its
  astrophysical implications

abstract:
  We analyze the Higgs intense--coupling regime, in which all Higgs particles
of the Minimal Supersymmetric Standard Model are light with masses of the same
order and the value of $\tb$ the ratio of vacuum expectation values of the two
Higgs fields is large, in the framework of Supergravity scenarios with
non--universal soft Supersymmetry breaking scalar masses in the Higgs sector.
In particular, we calculate the relic density abundance of the lightest
neutralino candidate for cold dark matter and the rates in direct and indirect
detection at present and future experiments. We first show that while in the
mSUGRA model this regime is disfavored by present data, there are regions in
the parameter space of models with non--universal Higgs masses where it can
occur. We then show that because of the large value of $\tan\beta$ and the
relatively low values of the neutral Higgs boson masses, the cross section for
neutralino--nucleon scattering is strongly enhanced in this regime and would
allow for the observation of a signal in direct detection experiments such as
CDMS--Soudan. The expected sensitivity of gamma--ray detectors like GLAST might
be also sufficient to observe the annihilation of neutralinos in such a regime.


title:
Ionization cooled ultra pure beta-beams for long distance neu-e to
  neu-mu transitions, theta13 phase and CP-violation

abstract:
  The key process is the observation of tiny oscillation mixing between numu
and nue related to so far unknown theta13 amplitude, at distances corresponding
to an invariant neutrino flight path around about 2.0 MeV/km. Zucchelli [12]
has proposed the production of very pure neue beams (beta beams), in which
relativistic radio-nuclides are stored in a high energy storage ring and decay
in a long straight section pointing toward the neutrino detector far away. This
method produces ultra pure anti-neue (He-6) and neue (Ne-18) with a negligible
numu contamination (10-5). A novel kind of beta element production has been
recently proposed [15] in which slow (v about 0.1 c) fully ionized ions are
stored in a very small storage ring. Products like the isomeric doublet
Li-7(d,p) Li-8 and Li-6(He3,n) B-8 are stopped in some foils few micron thick,
from which they quickly diffuse as neutral atoms. The improvements are shown to
be considerable. An ion source, a chain of several accelerators in cascade and
a high energy storage/decay ring can produce a B-8 induced nue spectrum which
has as much as 7.7 times higher energy than the one from He-6 induced anti-nue
for a given magnetic rigidity of the storage ring. At a given neutrino energy,
the CC cross sections for nue are about 3 times larger than the ones of
anti-nue while the NC/CC inelastic pion background faking muons is about 3
times smaller. An optimal neu-e source might be fully ionized B-8 from the 120
GeV Main Energy Injector at FNAL, followed by a decay storage ring and a
neutrino fly path of about 700-800 km. As detector we consider a LAr TPC with a
fiducial mass of 50 to 100 kton. Such a technology should permit to detect a
background free signal for sin2(2theta13) as small as about 6.0 x 10-4. By
comparison, the present experimental limit is < 0.14.