title: Slepton production in polarized hadron collisions

abstract:
  We calculate cross sections and asymmetries for slepton pair production
through neutral and charged electroweak currents in polarized hadron collisions
for general slepton masses and including mixing of the left- and right-handed
interaction eigenstates relevant for third generation sleptons. Our analytical
results confirm and extend a previous calculation. Numerically, we show that
measurements of the longitudinal single-spin asymmetry at the existing
polarized pp collider RHIC and at possible polarization upgrades of the
Tevatron or the LHC would allow for a determination of the tau slepton mixing
angle and/or the associated supersymmetry breaking parameters Lambda for gauge
mediation and A0 for minimal supergravity. Furthermore, the Standard Model
background from tau pair production can be clearly distinguished due to the
opposite sign of the associated asymmetry.


title: Quasi-particle model of strongly interacting matter

abstract:
  The successful quasi-particle model is compared with recent lattice data of
the coefficients in the Taylor series expansion of the excess pressure at
finite temperature and baryon density. A chain of approximations, starting from
QCD to arrive at the model expressions for the entropy density, is presented.


title: Why do we need instantons in strangeness hadron physics?

abstract:
  Roles of instantons in strangeness hadron physics are discussed. After
introducing general features of instantons, hadron spectroscopy under the
influence of instanton-quark effective interactions is discussed. Emphases are
on the H dibaryon, spin-orbit splittings of P-wave baryons and baryon-baryon
interactions and spectrum of the pentaquarks.


title:
Two-Loop N_F =1 QED Bhabha Scattering: Soft Emission and Numerical
  Evaluation of the Differential Cross-section

abstract:
  Recently, we evaluated the virtual cross-section for Bhabha scattering in
pure QED, up to corrections of order alpha^4 (N_F =1). This calculation is
valid for arbitrary values of the squared center of mass energy s and momentum
transfer t; the electron and positron mass m was considered a finite, non
vanishing quantity. In the present work, we supplement the previous calculation
by considering the contribution of the soft photon emission diagrams to the
differential cross-section, up to and including terms of order alpha^4 (N_F=1).
Adding the contribution of the real corrections to the renormalized virtual
ones, we obtain an UV and IR finite differential cross-section; we evaluate
this quantity numerically for a significant set of values of the squared center
of mass energy s.


title: Spectator-model operators in point-form relativistic quantum mechanics

abstract:
  We address the construction of transition operators for electromagnetic,
weak, and hadronic reactions of relativistic few-quark systems along the
spectator model. While the problem is of relevance for all forms of
relativistic quantum mechanics, we specifically adhere to the point form, since
it preserves the spectator character of the corresponding transition operators
in any reference frame. The conditions imposed on the construction of
point-form spectator-model operators are discussed and their implications are
exemplified for mesonic decays of baryon resonances within a relativistic
constituent quark model.


title:
The Role of Higher Twist in Determining Polarized Parton Densities from
  DIS data

abstract:
  Different methods to extract the polarized parton densities from the world
polarized DIS data are considered. The higher twist corrections $h^N(x)/Q^2$ to
the spin dependent proton and neutron $g_1$ structure functions are found to be
non-negligible and important in the QCD analysis of the present experimental
data. Their role in determining the polarized parton densities in the framework
of the different approaches is discussed.


title:
Charmonia enhancement in quark-gluon plasma with improved description of
  c-quarks phase-distribution

abstract:
  We present a dynamical model of heavy quark evolution in the quark-gluon
plasma (QGP) based on the Fokker-Planck equation. We then apply this model to
the case of central ultra-relativistic nucleus-nucleus collisions performed at
RHIC and estimate the component of $J/\psi$ production (integrated and
differential) stemming from c-$\bar{c}$ pairs that are initially uncorrelated.


title: Phase transitions and behavior of kaons in hot and dense matter

abstract:
  We study phase transitions and the behavior of kaons in hot and dense matter,
giving special attention to the role of strange quarks. At T=0, it is found
that the fraction of the strange valence quarks affects the energy per particle
of the system, without changing the nature of the phase transition, and, on the
other side, it has meaningful effects on the behavior of kaons and antikaons
masses. The phase behavior of kaons in the $T-\rho$ plane is analyzed in
connection with the chiral phase transition.


title: Is the U$_A$(1) symmetry restored at finite temperature or density?

abstract:
  We investigate the full U(3)$\otimes$U(3) chiral symmetry restoration, at
finite temperature and density, on the basis of the three flavor
Nambu-Jona-Lasinio model with the anomaly term given by the 't Hooft
interaction. We implement a temperature (density) dependence of the anomaly
coefficient motivated by lattice results for the topological susceptibility.
The results suggest that the axial part of the symmetry is restored before the
possible restoration of the full U(3)$\otimes$U(3) chiral symmetry can occur.


title: Double-lepton polarizations in (B -> l^+ l^- gamma) decay

abstract:
  Double-lepton polarization asymmetries in the (B -> l^+ l^- gamma) decay are
calculated using the most general, model independent form of the effective
Hamiltonian including all possible forms of the interaction. The dependencies
of the asymmetries on new Wilson coefficients are investigated. The
detectability the averaged double-lepton polarization asymmetries at LHC is
also discussed.


title: Quark and Lepton Masses in 5D SO(10)

abstract:
  We construct a five dimensional supersymmetric SO(10)$\times$D$_3$ grand
unified model with an $S^1/(Z_2 \times Z^\prime_2)$ orbifold as the extra
dimension. The orbifold breaks half of the supersymmetry and breaks the SO(10)
gauge symmetry down to ${\rm SU(4)}_C \times {\rm SU(2)}_L \times {\rm
SU(2)}_R$. The Higgs mechanism is used to break the remaining gauge symmetry
the rest of the way to the Standard Model. We place matter fields variously in
the bulk and on the orbifold fixed points and the resulting massless fields are
mixtures between these brane and bulk fields. A chiral adjoint field in the
bulk gets a U(1)$_X$ vacuum expectation value, resulting in an $X$-dependent
localization of the bulk matter fields and the Standard Model Higgs field. This
Higgs field localization allows us to simultaneously explain the hierarchies
$m_u < m_d$ and $m_t \gg m_b$. The model uses 11 parameters to fit the 13
independent low energy observables of the quark and charged lepton Yukawa
matrices. The model predicts the values of two quark mass combinations,
$\f{m_u}{m_c}$ and $m_d m_s m_b$, each of which are predicted to be
approximately $1 \sigma$ above their experimental values. The remaining
observables are successfully fit at the 5% level.


title:
Particle Production in Proton-Proton and Deuteron-Gold Collisions at
  RHIC

abstract:
  We try to understand recent data on proton-proton and deuteron-gold
collisions at RHIC, employing a parton model approach called EPOS.


title: Probing the phases of QCD in ultra-relativistic nuclear collisions

abstract:
  The status of RHIC theory and phenomenology is reviewed with an emphasis on
the indications for the creation of a new deconfined state of matter. The
critical role of high energy nuclear physics in the development of theoretical
tools that address various aspects of the QCD many body dynamics is
highlighted. The perspectives for studying nuclear matter under even more
extreme conditions at the LHC and the overlap with high energy physics is
discussed.


title:
Detecting a Higgs Pseudoscalar with a Z Boson Produced in Bottom Quark
  Fusion

abstract:
  We investigate the prospects of detecting a Higgs pseudoscalar ($A^0$) in
association with a $Z$ gauge boson produced from bottom quark fusion ($b\bar{b}
\to ZA^0$) at the CERN Large Hadron Collider (LHC). A general two Higgs doublet
model and the minimal supersymmetric standard model are adopted to study the
discovery potential of $pp \to ZA^0 \to \ell \bar{\ell} b\bar{b} +X (\ell = e,
\mu)$, via $b\bar{b} \to ZA^0$ with physics backgrounds and realistic cuts.
Promising results are found for $m_A \alt 400$ GeV in a general two Higgs
doublet model when the heavier Higgs scalar ($H^0$) can decay into a $Z$ boson
and a Higgs pseudoscalar ($H^0 \to ZA^0$). We compare the production rates from
bottom quark fusion ($b\bar{b} \to ZA^0$) and gluon fusion ($gg \to ZA^0$) and
find that they are complementary processes to produce $ZA^0$ in hadron
collisions. While gluon fusion is the major source for producing a Higgs
pseudoscalar associated with a $Z$ boson at the LHC for $\tan\beta \alt 10$,
bottom quark fusion can make dominant contributions for $\tan\beta \agt 10$.


title: Initial State Parton Showers Beyond Leading Order

abstract:
  We derive a new method for initial-state collinear showering in Monte-Carlo
event generators which is based on the use of unintegrated parton correlation
functions. Combined with a previously derived method for final-state showering,
the method solves the problem of treating both the hard scattering and the
evolution kernels to be used in arbitrarily non-leading order. Although we only
treat collinear showering, so that further extensions are needed for QCD, we
have discovered several new results: (1) It is better to generate exact parton
kinematics in the hard scattering rather than with the subsequent parton
showering, and similarly at each step of the showering. (2) Parton showering is
then done conditionally on the exact energy-momentum of the initiating parton.
(3) We obtain a factorization for structure functions in terms of parton
correlation functions so that parton kinematics can be treated exactly from the
beginning. (4) We obtain two factorization properties for parton correlation
functions, one in terms of ordinary parton densities and one, suitable for
event generation, in terms of parton correlation functions themselves.


title: Hadronic decays of the tau lepton: Theoretical overview

abstract:
  Exclusive hadronic decays of the tau lepton provide an excellent framework to
study the hadronization of QCD currents in a non-perturbative energy region
populated by many resonances. I give a short review both on the main
theoretical tools employed to analyse experimental data and on how Theory
compares with Experiment.


title: The pion-pion scattering amplitude

abstract:
  We obtain reliable $\pi\pi$ scattering amplitudes consistent with
experimental data, both at low and high energies, and fulfilling appropriate
analyticity properties. We do this by first fitting experimental low energy
($s^{1/2}\leq1.42 {\rm GeV}$) phase shifts and inelasticities with expressions
that incorporate analyticity and unitarity. In particular, for the S wave with
isospin~0, we discuss in detail several sets of experimental data. This
provides low energy partial wave amplitudes that summarize the known
experimental information. Then, we impose Regge behaviour as follows from
factorization and experimental data for the imaginary parts of the scattering
amplitudes at higher energy, and check fulfillment of dispersion relations up
to 0.925 GeV. This allows us to improve our fits. The ensuing $\pi\pi$
scattering amplitudes are then shown to verify dispersion relations up to 1.42
GeV, as well as $s - t - u$ crossing sum rules and other consistency
conditions. The improved parametrizations therefore provide a reliable
representation of pion-pion amplitudes with which one can test chiral
perturbation theory calculations, pionium decays, or use as input for
CP-violating $K$ decays. In this respect, we find
$[a_0^{(0)}-a_0^{(2)}]^2=(0.077\pm0.008) M^{-1}_\pi$ and
$\delta_0^{(0)}(m^2_K)-\delta_0^{(2)}(m^2_K)=52.9\pm1.6^{\rm o}$.


title:
Continuation of the dual amplitude with Mandelstam analyticity off mass
  shell

abstract:
  The off mass shell continuation of dual amplitude with Mandelstam analyticity
(DAMA) is proposed. The modified DAMA (M-DAMA) preserves all the attractive
properties of DAMA, such as its pole structure and Regge asymptotics, and leads
to a generalized dual amplitude A(s,t,Q^2). In such a way we complete a unified
"two-dimensionally dual" picture of strong interaction. This generalized
amplitude can be checked in the known kinematical limits, i.e. it should reduce
to the ordinary dual amplitude on mass shell, and to the nuclear structure
function when t=0. We fix the Q^2-dependence in M-DAMA by comparing the
structure function F_2, resulting from it, with phenomenological
parameterizations. The results of M-DAMA are in qualitative agreement with the
experiment in all studied regions, i.e. in the large and low x limits as well
as in the resonance region.


title: B--> X_s + gamma in Supersymmetry without R-parity

abstract:
  We present a systematic analysis of the decay B--> X_s + gamma at the leading
log within the framework of Supersymmetry without R-parity. We point out some
new contributions in the form of bilinear-trilinear combination of R-parity
violating (RPV) couplings that are enhanced by large tanbeta. We also improve
by a few orders of magnitude, bounds on several combinations of R-parity
violating parameters.


title: Gluon Saturation in the Colour Dipole Model?

abstract:
  We use data on the deep inelastic structure function F_2 in order to
constrain the cross-section for scattering a colour dipole off a proton. The
data seem to prefer parameterisations which include saturation effects. That is
they indicate that the strong rise with energy of the dipole cross-section,
which holds for small dipoles, pertains only for r < r_s(x) where r_s(x)
decreases monotonically as x decreases. Subsequent predicitions for the
diffractive structure function F_2^{D(3)} also hint at saturation, although the
data are not really sufficiently accurate.


title:
Confronting next-leading BFKL kernels with proton structure function
  data

abstract:
  We propose a phenomenological study of the Balitsky-Fadin-Kuraev-Lipatov
(BFKL) approach applied to the data on the proton structure function F_2
measured at HERA in the small-x_{Bjorken} region. In a first part we use a
simplified ``effective kernel'' approximation leading to few-parameter fits of
F_2. It allows for a comparison between leading-logs (LO) and next-to-leading
logs (NLO) BFKL approaches in the saddle-point approximation, using known
resummed NLO-BFKL kernels. The NLO fits give a qualitatively satisfactory
account of the running coupling constant effect but quantitatively the chi
squared remains sizeably higher than the LO fit at fixed coupling. In a second
part, a comparison of theory and data through a detailed analysis in Mellin
space (x_{Bjorken} -> omega) leads to a more model independent approach to the
resummed NLO-BFKL kernels we consider and points out some necessary
improvements of the extrapolation at higher orders.


title: An Invariant Charge Model for All q^2>0 in QCD and Gluon Condensate

abstract:
  Under assumption of singular behavior of invariant charge alpha_s(q^2) at q^2
sim 0 and of large q^2 behavior, corresponding to the perturbation theory up to
four loops, a procedure is considered of smooth matching the beta-function at a
boundary of perturbative and nonperturbative regions. The procedure results in
a model for alpha_s for all q^2>0 with dimensionless parameters being fixed and
dimensional parameters being expressed in terms of only one quantity
Lambda_QCD. The gluon condensate which is defined by the nonperturbative part
of the invariant charge is calculated for two variants of ``true perturbative''
invariant charge, corresponding to freezing option and to analytic one in
nonperturbative region. Dimensional parameters are fixed by varying
normalization condition alpha_s(m^2_tau) = 0.29, 0.30, ..., 0.36. It is
obtained that on the boundary of perturbative region alpha_0 = alpha_s(q_0^2)
simeq 0.44, the procedure results in nonperturbative Coulomb component
alpha_Coulomb simeq 0.25, the nonperturbative region scale q_0 simeq 1 GeV, the
model parameter sigma simeq (0.42 GeV)^2 which suits as string tension
parameter, the gluon condensate appears to be close for two variants
considered, K simeq (0.33 -- 0.36 GeV)^4 (for alpha_s(m^2_tau) = 0.33).


title: Direct CP Violation and Final State Interactions in Hadronic B Decays

abstract:
  Final-state rescattering effects on the hadronic B decays and their impact on
direct CP violation are examined. The phenomenology of the polarization anomaly
in $B\to\phi K^*$ decays is discussed.


title: Low-pT Collective Flow Induces High-pT Jet Quenching

abstract:
  Data on low-pT hadronic spectra are widely regarded as evidence of a
hydrodynamic expansion in nucleus-nucleus collisions. In this interpretation,
different hadron species emerge from a common medium that has built up a strong
collective velocity field. Here, we show that the existence of a collective
flow field implies characteristic modifications of high-pT parton
fragmentation. We generalize the formalism of parton energy loss to the case of
flow-induced, oriented momentum transfer. We also discuss how to embed this
calculation in hydrodynamic simulations. Flow effects are found to result
generically in characteristic asymmetries in the eta-phi-plane of jet energy
distributions and of multiplicity distributions associated to high-pT trigger
particles. But collective flow also contributes to the medium-induced
suppression of single inclusive high-pT hadron spectra. In particular, we find
that low-pT elliptic flow can induce a sizeable additional contribution to the
high-pT azimuthal asymmetry by selective elimination of those hard partons
which propagate with significant inclination against the flow field. This
reduces at least partially the recently observed problem that models of parton
energy loss tend to underpredict the large azimuthal asymmetry v2 of high-pT
hadronic spectra in semi-peripheral Au+Au collisions.


title: Radiative transitions of high energy neutrino in dense matter

abstract:
  The quantum theory of the ``spin light'' (electromagnetic radiation emitted
by a massive neutrino propagating in dense matter due to the weak interaction
of a neutrino with background fermions) is developed. In contrast to the
Cherenkov radiation, this effect does not disappear even if the medium
refractive index is assumed to be equal to unity. The formulas for the
transition rate and the total radiation power are obtained. It is found out
that radiation of photons is possible only when the sign of the particle
helicity is opposite to that of the effective potential describing the
interaction of a neutrino (antineutrino) with the background medium. Due to the
radiative self-polarization the radiating particle can change its helicity. As
a result, the active left-handed polarized neutrino (right-handed polarized
antineutrino) converting to the state with inverse helicity can become
practically ``sterile''. Since the sign of the effective potential depends on
the neutrino flavor and the matter structure, the ``spin light'' can change a
ratio of active neutrinos of different flavors. In the ultra relativistic
approach, the radiated photons averaged energy is equal to one third of the
initial neutrino energy, and two thirds of the energy are carried out by the
final ``sterile'' neutrinos. This fact can be important for the understanding
of the ``dark matter'' formation mechanism on the early stages of evolution of
the Universe.


title: Discrete symmetries and neutrino masses

abstract:
  We constructed a model of neutrino masses using Froggatt-Nielsen mechanism
with $U(1) \times Z_3 \times Z_2$ flavor symmetry. The model predicts that
$(2/3)m_2/m_3 \sim \sqrt{2}\sin\theta_{13}$ at lepton number violating scale
$M_1$. It is shown that the small values for $m_2/m_3$ and $\sin\theta_{13}$
are consequences of breaking discrete symmetries.


title: Predictions for $B \to K \gamma \gamma$ decays

abstract:
  We present a phenomenological study of the rare double radiative decay $B\to
K \gamma\gamma$ in the Standard Model (SM) and beyond. Using the operator
product expansion (OPE) technique, we estimate the short-distance (SD)
contribution to the decay amplitude in a region of the phase space which is
around the point where all decay products have energy $\sim m_b/3$ in the rest
frame of the $B$-meson. At lowest order in 1/Q, where $Q$ is of order $m_b$,
the $B\to K \gamma\gamma$ matrix element is then expressed in terms of the
usual $B\to K$ form factors known from semileptonic rare decays. The integrated
SD branching ratio in the SM in the OPE region turns out to be $\Delta
{\cal{B}}(B \to K \gamma \gamma)_{SM}^{OPE} \simeq 1 \times 10^{-9}$. We work
out the di-photon invariant mass distribution with and without the resonant
background through $B\to K \{\eta_c,\chi_{c0}\}\to K\gamma \gamma$. In the SM,
the resonance contribution is dominant in the region of phase space where the
OPE is valid. The present experimental upper limit on $B_s \to \tau^+ \tau^-$
decays, which constrains the scalar/pseudoscalar Four-Fermi operators with
$\tau^+ \tau^-$, leaves considerable room for new physics in the
one-particle-irreducible contribution to $B\to K \gamma \gamma$ decays. In this
case, we find that the SD $B\to K \gamma \gamma$ branching ratio can be
enhanced by one order of magnitude with respect to its SM value and the SD
contribution can lie outside of the resonance peaks.


title: Neutrino Mass Models and Leptogenesis

abstract:
  In this talk we show how a natural neutrino mass hierarchy can follow from
the type I see-saw mechanism, and a natural neutrino mass degeneracy from the
type II see-saw mechanism, where the bi-large mixing angles can arise from
either the neutrino or charged lepton sector. We summarize the phenomenological
implications of such natural models, and discuss the model building
applications of the approach, focussing on the $SU(3)\times SO(10)$ model. We
also show that in such type II models the leptogenesis asymmetry parameter
becomes proportional to the neutrino mass scale, in sharp contrast to the type
I case, which leads to an upper bound on the neutrino mass scale, allowing
lighter right-handed neutrinos and hence making leptogenesis more consistent
with the gravitino constraints in supersymmetric models.


title: Meson correlation functions in a QCD plasma

abstract:
  The temporal pseudoscalar meson correlation function in a QCD plasma is
investigated in a range of temperatures exceeding $T_c$ and yet of experimental
interest. Only the flavour-singlet channel is considered and the imaginary time
formalism is employed for the finite temperature calculations. The behaviour of
the meson spectral function and of the temporal correlator is first studied in
the HTL approximation, where one replaces the free thermal quark propagators
with the HTL resummed ones. This procedure satisfactory describes the soft
fermionic modes, but its application to the propagation of hard quarks is not
reliable. An improved version of the so-called NLA scheme, which allows a
better treatment of the hard fermionic modes, is then proposed. The impact of
the improved NLA on the pseudoscalar temporal correlator is investigated.


title: Dynamical Chiral Symmetry Breaking in Landau gauge QCD

abstract:
  We summarise results for the propagators of Landau gauge QCD from the Green's
functions approach and lattice calculations. The nonperturbative solutions for
the ghost, gluon and quark propagators from a coupled set of Dyson-Schwinger
equations agree almost quantitatively with corresponding lattice results.
Similar unquenching effects are found in both approaches. The dynamically
generated quark masses are close to `phenomenological' values. The chiral
condensate is found to be large.


title: Two-loop self-energy contribution to the Lamb shift in H-like ions

abstract:
  The two-loop self-energy correction is evaluated to all orders in Z\alpha for
the ground-state Lamb shift of H-like ions with Z >= 10, where Z is the nuclear
charge number and \alpha is the fine structure constant. The results obtained
are compared with the analytical values for the Z\alpha-expansion coefficients.
An extrapolation of the all-order numerical results to Z=1 is presented and
implications of our calculation for the hydrogen Lamb shift are discussed.


title: Natural braneworld inflation and baryogenesis

abstract:
  In natural inflation models, the inflaton is a pseudo Nambu-Goldstone boson
and the flatness of the potential is protected by shift symmetries. In this
framework, a successful inflation requires the global symmetry to be
spontaneously broken at a scale close to the Planck mass. Such a high value of
the spontaneous breaking scale may not be legitimate in an effective field
theory. On the other hand, if natural inflation occurs during the
nonconventional high-energy era in braneworld cosmology, the conditions for the
inflaton slow rolling can be eased and the spontaneous breaking scale can be
lowered to values below the Planck scale. We examine the observational
constraints on this scenario and study the possibility that the baryon
asymmetry of the universe is generated by the decay of the pseudo
Nambu-Goldstone boson during the reheating era.


title: Chiral symmetry and density wave in quark matter

abstract:
  A density wave in quark matter is discussed at finite temperature, which
occurs along with the chiral condensation, and is described by a dual standing
wave in scalar and pseudo-scalar condensates on the chiral circle. The
mechanism is quite similar to that for the spin density wave suggested by
Overhauser, and entirely reflects many-body effects. It is found that the
chiral condensed phase with the density wave develops at a high-density region
just outside the usual chiral-transition line in phase diagram. A magnetic
property of the density wave is also elucidated.


title: B physics and Supersymmetry

abstract:
  In SUSY models, it is still possible to have large signals even if the
current data on $K$ and $B$ systems are consistent with the CKM paradigm for
flavor mixing and CP violation. I first discuss $b\to d$ and $b\to s$
transitions including time-dependent CP asymmetries in $B_d \to \phi K_s$, and
usefulness of $B_s \to \mu^+ \mu^-$ to distinguish various SUSY breaking
mechanisms. Then I will discuss some possible connections between B physics and
cosmology: (i) B physics and electroweak baryogenesis within SUSY models, and
(ii) the correlation between the neutralino dark matter scattering and $B (B_s
\to \mu^+ \mu^-)$.


title:
Electroweak phase transition in an extension of the standard model with
  a real Higgs singlet

abstract:
  The Higgs potential of the standard model with an additional real Higgs
singlet is studied in order to examine if it may allow the strongly first order
electroweak phase transition. It is found that there are parameter values for
which this model at the one-loop level with finite temperature effect may allow
the desired phase transition. Those parameter values also predict that the
masses of the neutral scalar Higgs bosons of the model are consistent with the
present experimental bound, and that their productions in $e^+e^-$ collisions
may be searched at the proposed ILC with $\sqrt s$ = 500 GeV in the near
future.


title:
Colour-SU(3)-Ginzburg-Landau Effective Potential for Order Parameter
  with $3 \times 3$ Symmetry II : A Complete Classification of Phase Diagrams

abstract:
  Phase structure is studied for a system which has symmetry group SU(3) and is
described by SU(3)-${\bf 3 \times 3}$ order parameter. The study is rested on
SU(3)-Ginzburg-Landau effective potential constructed as a preliminary.


title:
Electroweak baryogenesis and quantum corrections to the triple Higgs
  boson coupling

abstract:
  A phenomenological consequence of electroweak baryogenesis is studied in
connection with the Higgs physics. In a two Higgs double model, the first order
phase transition can be strong enough to allow the electroweak baryogenesis due
to the effect of extra Higgs bosons. We investigate the quantum correction to
the triple coupling of the lightest Higgs boson in such a scenario, and find
that the condition of the strong first order phase transition necessarily leads
to the deviation of at least 10 percent from the standard model prediction.
Such magnitude of the deviation can be identified in future $e^+e^-$ linear
collider experiments. We also discuss the minimal supersymmetric standard model
with the light stop scenario, and point out that a sizable correction appears
in the triple coupling for successful electroweak baryogenesis.


title: Here's looking at you, fireball

abstract:
  Plasmas screen electromagnetic waves of frequency less than the plasma
frequency, omega_p, with a skin depth, delta, specified by the electrical
conductivity, sigma. Current estimates of the transport properties of the QCD
plasma indicates that photons with energy less than 250--500 MeV would be
screened with a skin depth of 2--4 fm. In a hadron gas, a little below T_c,
screening occurs for much softer photons, of energy less than approximately 50
MeV, albeit with similar values of delta. If the QCD plasma is indeed strongly
interacting, then it can be proven by merely looking at the brightness of a
fireball from different angles.


title:
Thermal Phase Transitions and Gapless Quark Spectra in Quark Matter at
  High Density

abstract:
  Thermal color superconducting phase transitions in three-flavor quark matter
at high baryon density are investigated in the Ginzburg-Landau (GL) approach.
We constructed the GL potential near the boundary with a normal phase by taking
into account nonzero quark masses, electric charge neutrality, and color charge
neutrality. We found that the density of states averaged over paired quarks
plays a crucial role in determining the phases near the boundary. By performing
a weak coupling calculation of the parameters characterizing the GL potential
terms of second order in the pairing gap, we show that three successive
second-order phase transitions take place as the temperature increases: a
modified color-flavor locked phase (ud, ds, and us pairings) -> a ``dSC'' phase
(ud and ds pairings) -> an isoscalar pairing phase (ud pairing) -> a normal
phase (no pairing). The Meissner masses of the gluons and the number of gapless
quark modes are also studied analytically in each of these phases.


title:
The difference between n-dimensional regularization and n-dimensional
  reduction in QCD

abstract:
  We discuss the difference between n-dimensional regularization and
n-dimensional reduction for processes in QCD which have an additional mass
scale. Examples are heavy flavour production in hadron-hadron collisions or
on-shell photon-hadron collisions where the scale is represented by the mass
$m$. Another example is electroproduction of heavy flavours where we have two
mass scales given by $m$ and the virtuality of the photon $Q=\sqrt{-q^2}$.
Finally we study the Drell-Yan process where the additional scale is
represented by the virtuality $Q=\sqrt{q^2}$ of the vector boson ($\gamma^*, W,
Z$). The difference between the two schemes is not accounted for by the usual
oversubtractions. There are extra counter terms which multiply the mass scale
dependent parts of the Born cross sections. In the case of the Drell-Yan
process it turns out that the off-shell mass regularization agrees with
n-dimensional regularization.


title:
Effects of the neutrino B-term on the Higgs mass parameters and
  electroweak symmetry breaking

abstract:
  To embed the seesaw mechanism in the MSSM, two or three right-handed neutrino
supermultiplets, $N_i$, have to be added to the model. In the presence of these
new superfields, the soft supersymmetry breaking potential includes a lepton
number violating mass term which is known as the neutrino $B$-term, $M
B_\nu\tilde{N}\tilde{N}/2$. In this paper, we study the effects of $B_\nu$ on
the Higgs mass parameters. Using the condition for the electroweak symmetry
breaking, we derive an upper bound on $B_\nu$ which is two orders of magnitude
stronger than the previous bounds. We also propose a simple model in which it
is natural to have large values of $B_\nu$ while the rest of the supersymmetry
breaking terms are at the TeV scale or smaller.


title: Solar neutrinos and 1-3 leptonic mixing

abstract:
  Effects of the 1-3 leptonic mixing on the solar neutrino observables are
studied and the signatures of non-zero $\theta_{13}$ are identified. For this
we have re-derived the formula for $3\nu$-survival probability including all
relevant corrections and constructed the iso-contours of observables in the
$\sin^2 \theta_{12} - \sin^2 \theta_{13}$ plane. Analysis of the solar neutrino
data gives $\sin^2\theta_{13} = 0.007^{+ 0.080}_{-0.007}$ (90% C.L.) for
$\Delta m^2 = 8 \cdot 10^{-5}$ eV$^2$. The combination of the ratio CC/NC at
SNO and gallium production rate selects $\sin^2\theta_{13} = 0.017 \pm 0.026$
($1\sigma$). The global fit of all oscillation data leads to zero best value of
$\sin^2 \theta_{13}$. The sensitivity ($1\sigma$ error) of future solar
neutrino studies to $\sin^2 \theta_{13}$ can be improved down to 0.01 - 0.02 by
precise measurements of the pp-neutrino flux and the CC/NC ratio as well as
spectrum distortion at high ($E > 4$ MeV) energies. Combination of experimental
results sensitive to the low and high energy parts of the solar neutrino
spectrum resolves the degeneracy of angles $\theta_{13}$ and $\theta_{12}$.
Comparison of $\sin^2 \theta_{13}$ as well as $\sin^2 \theta_{12}$ measured in
the solar neutrinos and in the reactor/accelerator experiments may reveal new
effects which can not be seen otherwise.


title: Neutralino polarization effect in the squark cascade decay at LHC

abstract:
  We study the effect of the neutralino polarization in a squark cascade decay
$\tilde{q} \to q \tilde{\chi}^0_2 \to q l^\pm \tilde{l}^\mp \to q l^\pm
\tilde{l}^\mp \to q l^\pm l^\mp \tilde{\chi}^0_1$. Charge asymmetry in the
lepton-jet invariant mass distribution appears depending on the chirality
structure of the sfermion-fermion-neutralino coupling. With use of the Monte
Carlo simulation, we show that the asymmetry is measurable in LHC. We also show
that the distribution of the charge asymmetry is sensitive to the (s)lepton
flavor.


title:
Exploring Flavor Structure of SUSY Breaking from B Decays and the
  Unitarity Triangle

abstract:
  We study effects of SUSY particles in the unitarity triangle analysis and the
CP asymmetries in b -> s decays. We consider three different SUSY models, the
minimal supergravity, SU(5) SUSY GUT with right-handed neutrinos, and MSSM with
U(2) flavor symmetry, and show that the patterns and correlations of deviations
from the standard model will be useful to discriminate the different SUSY
models in future B experiments.


title: Effects of QCD Vacuum and Stability of H Dihyperon

abstract:
  Within the composite quark model taking into account the interaction of
quarks in the bag with vacuum fields of QCD the masses of H (I=0,S=-2,J=0,1^C)
and H* (I=0,S=-2,J=1,1^C) dihyperons are estimated: M_H=2.16 GeV, M_H*=2.34
GeV. It is shown that the leading effect giving a stable with respect to strong
decays H dihyperon is the instanton interaction forming diquarks: q^2(J=0,C=3),
q^2(J=0,C=6). With the approach developed the contribution of QCD hyperfine
interaction is suppressed, and instanton induced three-particle forces in
multiquark hadrons (q^3(J=1/2,C=8) - channel) are rather small.


title: Decay of Affleck-Dine Condensates with Application to Q-balls

abstract:
  Analytical and numerical estimates show that a charged Affleck-Dine
condensate will fracture into Q-balls only when the Hubble time is
significantly larger than the inverse soft-breaking mass of the field in
question. This would generally imply that the decay of the field into light
fermions will compete with Q-ball formation. We will show that for typical flat
directions the large field value will significantly suppress decays of the
condensate to fermions even if no baryon charge asymmetry exists. We will
consider the details of the decay process for a condensate that does carry
charge, and show that it is qualitatively different from that of an uncharged
condensate. Finally, we will consider the possibility of resonant production of
heavy bosons. We will show that this can have a strong effect on the
condensate. Contrary to intuition, however, our results indicate that boson
production would actually assist Q-ball formation in condensates with
significant charge.


title:
Upper limits on sparticle masses from WMAP dark matter constraints with
  modular invariant soft breaking

abstract:
  An analysis of dark matter within the framework of modular invariant soft
breaking is given. In such scenarios inclusion of the radiative electroweak
symmetry breaking constraint determines $\tan\beta$ which leads to a more
constrained analysis. It is shown that for $\mu$ positive for this constrained
system the WMAP data leads to upper limits on sparticle masses that lie within
reach of the LHC with also the possibility that some sparticles may be
accessible at RUNII of the Tevatron.


title: Breaking of k_\perp-factorization for Single Jet Production off Nuclei

abstract:
  The linear k_\perp-factorization is part and parcel of the pQCD description
of high energy hard processes off free nucleons.
  In the case of heavy nuclear targets the very concept of nuclear parton
density becomes ill-defined as exemplified by the recent derivation [2] of
nonlinear nuclear k_\perp-factorization for forward dijet production in DIS off
nuclei. Here we report a derivation of the related breaking of
k_\perp-factorization for single-jet processes. We present a general formalism
and apply it to several cases of practical interest: open charm and quark and
gluon jet production in the central to beam fragmentation region of
\gamma^*p,\gamma^*A, pp and pA collisions. We show how the pattern of
k_\perp-factorization breaking and the nature and number of exchanged nuclear
pomerons do change within the phase space of produced quark and gluon jets. As
an application of the nonlinear k_\perp-factorization we discuss the Cronin
effect. Our results are also applicable to the p_\perp-dependence of the
Landau-Pomeranchuk-Migdal effect for, and nuclear quenching of, jets produced
in the proton hemisphere of pA collisions.


title: Single Neutralino production at CERN LHC

abstract:
  The common belief that the lightest supersymmetric particle (LSP) might be a
neutralino, providing also the main Dark Matter (DM) component, calls for
maximal detail in the study of the neutralino properties. Motivated by this, we
consider the direct production of a single neutralino $\tchi^0_i$ at a
high/energy hadron collider, focusing on the $\tchi^0_1$ and $\tchi^0_2$ cases.
At Born level, the relevant subprocesses are $q\bar q\to \tchi^0_i \tilde g$,
$g q\to \tchi^0_i \tilde q_{L,R}$ and $q\bar q'\to \tchi^0_i\tchi^\pm_j$; while
at 1-loop, apart from radiative corrections to these processes, we consider
also $gg\to \tchi^0_i\tilde{g}$, for which a numerical code named PLATONgluino
is released. The relative importance of these channels turns out to be
extremely model dependent. Combining these results with an analogous study of
the direct $\tchi^0_i\tchi^0_j$ pair production, should help in testing the
SUSY models and the Dark Matter assignment.


title: Analytic structure of the Landau gauge gluon propagator

abstract:
  The results of different non-perturbative studies agree on a power law as the
infrared behavior of the Landau gauge gluon propagator. This propagator
violates positivity and thus indicates the absence of the transverse gluons
from the physical spectrum, i.e. gluon confinement. A simple analytic structure
for the gluon propagator is proposed capturing all of its features. We comment
also on related investigations for the Landau gauge quark propagator.


title: Search for lepton flavor violation via the intense high-energy muon beam

abstract:
  A deep inerastic scattering process \mutau is discussed to study lepton
flavor violation between muons and tau leptons. In supersymmetric models, the
Higgs boson mediated diagrams could be important for this reaction. We find
that at a muon energy ($E_{\mu}$) higher than 50 GeV, the predicted cross
section significantly increases due to the contribution from sea $b$-quarks.
The number of produced tau leptons can be $\mathcal{O}(10^4)$ at $E_{\mu}$= 300
GeV from $10^{20}$ muons, whereas $\mathcal{O}(10^2)$ events are given at
$E_{\mu}= 50$ GeV.


title: Today's View on Strangeness

abstract:
  There are several different experimental indications, such as the
pion-nucleon sigma term and polarized deep-inelastic scattering, which suggest
that the nucleon wave function contains a hidden s bar s component. This is
expected in chiral soliton models, which also predicted the existence of new
exotic baryons that may recently have been observed. Another hint of hidden
strangeness in the nucleon is provided by copious phi production in various N
bar N annihilation channels, which may be due to evasions of the
Okubo-Zweig-Iizuka rule. One way to probe the possible polarization of hidden s
bar s pairs in the nucleon may be via Lambda polarization in deep-inelastic
scattering.


title: Determination of the b-mass using renormalon cancellation

abstract:
  Methods of Borel integration to calculate the binding ground energies and
mass of b-barb quarkonia are presented. The methods take into account the
leading infrared renormalon structure of the "soft" binding energy E(s) and of
the quark pole masses mq, and the property that the contributions of these
singularities in M(s) = 2 mq + E(s) cancel.


title: Large-distance effects on spin observables at RHIC

abstract:
  The impact of large-distance contributions on the behaviour of the slopes of
the spin-non-flip and of the spin-flip amplitudes is analysed. It is shown that
the long tail of the hadron potential in impact parameter space leads to a
larger value of the slope for the spin-flip amplitude (without the kinematic
factor sqrt(|t|)) than for the spin-non-flip amplitude. This effect is taken
into account in the calculation of the analysing power in proton-nucleus
reactions at high energies.


title: QCD Theory

abstract:
  Quantum Chromodynamics is an established part of the Standard Model and an
essential part of the toolkit for searching for new physics at high-energy
colliders. I present a status report on the theory of QCD and review some of
the important developments in the past year.


title: B -> pi pi, New Physics in B -> pi K and Rare K and B Decays

abstract:
  We summarize a recent strategy for a global analysis of the B -> pi pi, pi K
systems and rare decays. We find that the present B -> pi pi and B -> pi K data
cannot be simultaneously described in the Standard Model. In a simple extension
in which new physics enters dominantly through Z^0 penguins with a CP-violating
phase, only certain B -> pi K modes are affected by new physics. The B -> pi pi
data can then be described entirely within the Standard Model but with values
of hadronic parameters that reflect large non-factorizable contributions. Using
the SU(3) flavour symmetry and plausible dynamical assumptions, we can then use
the B -> pi pi decays to fix the hadronic part of the B -> pi K system and make
predictions for various observables in the B_d -> pi^-+ K^+- and B^+- -> pi^+-
K decays that are practically unaffected by electroweak penguins. The data on
the B^+- -> pi^0 K^+- and B_d -> pi^0 K modes allow us then to determine the
electroweak penguin component which differs from the Standard Model one, in
particular through a large additional CP-violating phase. The implications for
rare K and B decays are spectacular. In particular, the rate for K_L -> pi^0 nu
\bar nu is enhanced by one order of magnitude, the branching ratios for B_{d,s}
-> mu^+ mu^- by a factor of five, and BR(K_L -> pi^0 e^+ e^-, pi^0 mu^+ mu^-)
by factors of three.


title: Pion Corrections in Gribov's Approach to the Dyson-Schwinger Equation

abstract:
  Chiral symmetry breaking in QCD leads to the emergence of pions as Goldstone
bosons. Their existence in turn affects the Green functions of the theory. Here
we study the effect of pion corrections on the light quark's Green function in
Feynman gauge using the framework of Gribov's approach to the Dyson-Schwinger
equation.


title: On the nature of the lightest scalar resonances

abstract:
  We briefly review the recent progresses in the new unitarization approach
being developed by us. Especially we discuss the large $N_c$ $\pi\pi$
scatterings by making use of the partial wave $S$ matrix parametrization form.
We find that the $\sigma$ pole may move to the negative real axis on the second
sheet of the complex $s$ plane, therefore it raises the interesting question
that this `$\sigma$' pole may be related to the $\sigma$ in the linear $\sigma$
model.


title: Indirect Signals from Dark Matter in Split Supersymmetry

abstract:
  We study the possibilities for the indirect detection of dark matter in Split
Supersymmetry from gamma-rays, positrons, and antiprotons. The most promising
signal is the gamma-ray line, which may be observable at the next generation of
detectors. For certain halo profiles and a high mass neutralino, the line can
even be visible in current experiments. The continuous gamma-ray signal may be
observable, if there is a central spike in the galactic halo density. The
signals are found to be similar to those in MSSM models. These indirect signals
complement other experiments, being most easily observable for regions of
parameter space, such as heavy wino and higgsino dominated neutralinos, which
are least accessible for direct detection and accelerator searches.


title: TAUOLA as tau Monte Carlo for future applications

abstract:
  The status of the Monte Carlo programs for the simulation of tau-lepton
production and decay in high-energy accelerator experiments is reviewed. In
particular, the status of the following packages is discussed: (i) TAUOLA for
tau-lepton decay, (ii) PHOTOS for radiative corrections in decays, (iii)
MC-TESTER packages for various types of semi-automatic tests, and (iv)
universal interface of TAUOLA for the decay of tau leptons produced by `any'
generator. Emphasis is put on recent developments for high-precision tests and
extensions of PHOTOS. Some considerations for the software organization
necessary in future applications for Belle and BaBar will be given; examples of
TAUOLA universal interface use will only be listed at the end of the review.


title: Shadowing and Absorption Effects on J/psi Production in dA Collisions

abstract:
  We study medium modifications of J/psi production in cold nuclear media in
deuterium-nucleus collisions. We discuss several parameterizations of the
modifications of the parton densities in the nucleus, known as shadowing, an
initial-state effect. We also include absorption of the produced J/psi by
nucleons, a final-state effect. Both spatially homogeneous and inhomogeneous
shadowing and absorption are considered. We use the number of binary
nucleon-nucleon collisions as a centrality measure. Results are presented for
d+Au collisions at sqrt{S_{NN}} = 200 GeV and for d+Pb collisions at
sqrt{S_{NN}} = 6.2 TeV. To contrast the centrality dependence in pA and dA
collisions, we also present pPb results at sqrt{S_{NN}} = 8.8 TeV.


title:
Resonant CP Violation in MSSM Higgs Production and Decay at $\gamma
  \gamma$ Colliders

abstract:
  We study CP-violating phenomena in the production, mixing and decay of a
coupled system of CP-violating neutral Higgs bosons at \gamma \gamma colliders,
assuming a Minimal Supersymmetric Standard Model (MSSM) Higgs sector in which
CP violation is radiatively induced by phases in the soft
supersymmetry-breaking gaugino masses and third-generation trilinear squark
couplings. We discuss CP asymmetries in the production and decays of \mu^+
\mu^-, \tau^+ \tau^-, {\bar b} b and {\bar t} t pairs. We find large
asymmetries when two (or all three) neutral Higgs bosons are nearly degenerate
with mass differences comparable to their decay widths, as happens naturally in
the CP-violating MSSM for values of \tan\beta >~ 5(30) and large (small)
charged Higgs-boson masses.


title: Anomaly-induced baryogenesis

abstract: This paper has been withdrawn by the author


title: High energy evolution beyond the Balitsky - Kovchegov equation

abstract:
  We present a short review of recent theoretical activity which is an attempt
to learn about low $x$ evolution beyond the Balitsky - Kovchegov equation.


title: Factorization of Large-x Quark Distributions in a Hadron

abstract:
  We present a factorization formula for valence quark distributions in a
hadron in x-->1 limit. For the example of pion, we arrive at the form of
factorization by analyzing momentum flow in the leading and high-order Feynman
diagrams. The result confirms the well-known 1-x scaling rule to all orders in
perturbation theory, providing the non-perturbative matrix elements for the
infrared-divergence factors. We comment on re-summation of perturbative single
and double logarithms in 1-x.


title:
Vacuum creation of massive vector bosons and its application to a
  conformal cosmological model

abstract:
  In the simple model of a massive vector field in flat space-time, we derive a
kinetic equation of non-Markovian type, describing the vacuum pair creation
under the action of external fields of different nature. We use for this aim
the non-perturbative methods of kinetic theory in combination with a new
element when the transition of the instantaneous quasiparticle representation
is realized within the oscillator (holomorphic) representation. We study in
detail the process of vacuum creation of vector bosons generated by a
time-dependent boson mass in accordance with a conformal-invariant
scalar-tensor gravitational theory and its cosmological application. It is
indicated that the choice of the equation of state (EoS) of the Universe allows
to obtain a number density of the vector bosons that is sufficient to explain
the observed number density of photons in the cosmic microwave background
radiation. It is shown that the vector boson gas created from the vacuum is in
a strong non-equilibrium state and corresponds to a cold dust-like EoS.


title:
Study of instanton effects in electromagnetic quark form factor at high
  energy

abstract:
  The detailed analysis of nonperturbative contributions to the electromagnetic
quark form factor is performed within the framework of the instanton liquid
model (ILM) of the QCD vacuum. The method of the path-ordered Wilson
exponentials is applied to evaluate explicitly the instanton corrections. By
using the Gaussian interpolation of the constrained instanton solution, it is
shown that the instantons yield the logarithmic corrections to the amplitudes
in high energy limit which are exponentiated in small instanton density
parameter.


title: Gravitational effects on critical Q-balls

abstract:
  In a cosmological phase transition in theories that admit Q-balls there is a
value of the soliton charge above which the soliton becomes unstable and
expands, converting space to the true vacuum, much like a critical bubble in
the case of ordinary tunneling. Here I consider the effects of gravity on these
solitons and I calculate the lowest gravitational corrections to the critical
radius and charge.


title: Near threshold enhancement of the ppbar mass spectrum in J/Psi decay

abstract:
  We investigate the nature of the near-threshold enhancement in the ppbar
invariant mass spectrum of the reaction J/Psi -> gamma ppbar reported recently
by the BES Collaboration. Using the Juelich NNbar model we show that the mass
dependence of the ppbar spectrum close to the threshold can be reproduced by
the S-wave ppbar final state interaction in the isospin I=1 state within the
Watson-Migdal approach. However, because of our poor knowledge of the NNbar
interaction near threshold and of the J/Psi -> gamma ppbar reaction mechanism
and in view of the controversal situation in the decay J/Psi -> pi0 ppbar,
where no obvious signs of a ppbar final state interaction are seen,
explanations other than final state interactions cannot be ruled out at the
present stage.


title:
Hadron annihilation into two photons and backward dVCS in the scaling
  regime of QCD

abstract:
  We study the scaling regime of hadron-(anti)-hadron annihilation into a
deeply virtual photon and a real photon, H anti-H -> gamma^* gamma, and deep
backward virtual Compton scattering, gamma^* H -> H gamma. We advocate that
there is a kinematical region where the scattering amplitude factorizes into a
short-distance matrix element and a long-distance dominated object: a
transition distribution amplitude which describes the hadron to photon
transition.


title:
Effect of the smaller mass-squared difference for the long base-line
  neutrino experiments

abstract:
  Usually, neutrino oscillation experiments are analyzed within the two-flavor
framework which is governed by 1 mass-squared difference and 1 mixing angle.
But there are 6 parameters,2 mass-squared differences, 3 mixing angles, and 1
CP phase within the three-flavor framework.In this article,we estimate the
effect from the smaller mass-squared difference,the other mixing angles, and
the CP phase, which we call three-flavor effect, for the determination of the
mass-squared difference and the mixing angle from the nu_mu's survival and
transition probability with the two-flavor analysis.It is found that the
mass-squared difference from the two-flavor analysis is slightly shifted from
the larger mass-squared difference by the three-flavor effect.The order of
magnitude of the three-flavor effect for the mass-squared difference is
comparable with that of the expected error for the mass-squared difference of
the two-flavor analysis in the future long base-line neutrino oscillation
experiments.The CP phase dependence of the nu_mu to nu_etransition probability
is also shown.


title: MILOU : a Monte-Carlo for Deeply Virtual Compton Scattering

abstract:
  In this note, we present a new generator for Deeply Virtual Compton
Scattering processes. This generator is based on formalism of Generalized
Partons Distributions evolved at Next Leading Order (NLO). In the following we
give a brief description of this formalism and we explain the main features of
the generator for the elastic reactions, as well as for proton dissociation.


title:
Next-to-Leading order approximation of polarized valon and parton
  distributions

abstract:
  Polarized parton distributions and structure functions of the nucleon are
analyzed in the improved valon model. The valon representation provides a model
to represent hadrons in terms of quarks, providing a unified description of
bound state and scattering properties of hadrons. Polarized valon distributions
are seen to play an important role in describing the spin dependence of parton
distributions in the leading order (LO) and next-to-leading order (NLO)
approximations. In the polarized case, a convolution integral is derived in the
framework of the valon model. The Polarized valon distribution in a proton and
the polarized parton distributions inside the valon are necessary to obtain the
polarized parton distributions in a proton. Bernstein polynomial averages are
used to extract the unknown parameters of the polarized valon distributions by
fitting to the available experimental data. The predictions for the NLO
calculations of the polarized parton distributions and proton structure
functions are compared with the LO approximation. It is shown that the results
of the calculations for the proton structure function, $xg_1^p$, and its first
moment, $\Gamma_{1}^p$, are in good agreement with the experimental data for a
range of values of $Q^{2}$. Finally the spin contribution of the valons to the
proton is calculated.


title: A Time Dependence of QCD

abstract:
  From astrophysics there are indications that the finestructure constant
$\alpha $ has changed during the past 10 billion years. Within grand
unification one can deduce that also the QCD scale has changed. Tests for a
time variation of this scale are described. The result of the new experiment in
Munich is discussed.


title:
Direct CP Violation, Branching Ratios and Form Factors $B \to \pi$, $B
  \to K$ in $B$ Decays

abstract:
  The $B \to \pi$ and $B \to K$ transitions involved in hadronic B decays are
investigated in a phenomenological way through the framework of QCD
factorization. By comparing our results with experimental branching ratios from
the BELLE, BABAR and CLEO Collaborations for all the B decays including either
a pion or a kaon, we propose boundaries for the transition form factors $B \to
\pi$ and $B \to K$ depending on the CKM matrix element parameters $\rho$ and
$\eta$. From this analysis, the form factors required to reproduce the
experimental data for branching ratios are $F^{B \to \pi}= 0.31 \pm 0.12$ and
$F^{B \to K}= 0.37\pm 0.13$. We calculate the direct CP violating asymmetry
parameter, $a_{CP}$, for $B \to \pi^{+} \pi^{-} \pi$ and $B \to \pi^{+} \pi^{-}
K$ decays, in the case where $\rho-\omega$ mixing effects are taken into
account. Based on these results, we find that the direct CP asymmetry for
$B^{-} \to \pi^{+} \pi^{-} \pi^{-}$, $\bar{B}^{0} \to \pi^{+} \pi^{-} \pi^{0}$,
$B^{-} \to \pi^{+} \pi^{-} K^{-}$, and $\bar{B}^{0} \to \pi^{+} \pi^{-}
\bar{K}^{0}$, reaches its maximum when the invariant mass $\pi^{+} \pi^{-}$ is
in the vicinity of the $\omega$ meson mass. The inclusion of $\rho-\omega$
mixing provides an opportunity to erase, without ambiguity, the phase
uncertainty mod$(\pi)$ in the determination of the CKM angles $\alpha$ in case
of $b\to u$ and $\gamma$ in case of $b \to s$.


title: Chiral quark models and their applications

abstract:
  We give an overview of chiral quark models, both for the pure light sector
and the heavy-light sector.
  We describe how such models can be bosonized to obtain welWe give an overview
of chiral quark models, both for the pure light sector and the heavy-light
sector.
  We describe how such models can be bosonized to obtain well known chiral
Lagrangians which can be inferred from the symmetries of QCD alone. In
addition, we can within these models calculate the coefficients of the various
pieces of the chiral Lagrangians. We discuss a few applications of the models,
in particular, $\bbar$ mixing and processes of the type $B \to D \bar{D}$,
where $D$ might be both pseudoscalar and vector. We suggest how the formalism
might be extended to include light vectors ($\rho,\omega,K^*$), and heavy to
light transitions like $B \to \pi$. l known chiral Lagrangians which can be
inferred from the symmetries of QCD alone. In addition, we can within these
models calculate the coefficients of the various pieces of the chiral
Lagrangians. We discuss a few applications of the models, in particular,
$\bbar$ mixing and processes of the type $B \to D \bar{D}$, where $D$ might be
both pseudoscalar and vector. We suggest how the formalism might be extended to
include light vectors ($\rho,\omega,K^*$), and heavy to light transitions like
$B \to \pi$.


title: Expansion of massive scalar one-loop integrals to O(\epsilon^2)

abstract:
  We report on the results of an ongoing calculation of massive scalar one-loop
one-, two-, three- and four-point functions needed in the NNLO calculation of
heavy hadron production.


title:
Power corrections to B\to X_u l \nu (X_s\gamma) decay spectra in the
  "shape-function" region

abstract:
  Using soft-collinear effective theory (SCET), we examine the 1/m_b
corrections to the factorization formulas for inclusive semi-leptonic B decays
in the endpoint region, where the hadronic final state consists of a single
jet. At tree level, we find a new contribution from four-quark operators that
was previously assumed absent. Beyond tree level many sub-leading
shape-functions are needed to correctly describe the decay process.


title:
Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no
  quarks

abstract:
  States beyond those expected in the simple constituent quark model are now
emerging. I focus on the scalar glueball and its mixing with states in the
$q\bar{q}$ nonet, and also on correlations in Strong QCD that may form diquarks
and seed $qq\bar{q}\bar{q}$ states. Some models of the pentaquark candidate
$\Theta(1540)$ are critically discussed.


title: Generalization of the BLM procedure and its scales in any order of pQCD

abstract:
  The Brodsky--Lepage--Mackenzie procedure is sequentially and unambiguously
extended to any fixed order of perturbative QCD beyond the so called
``large--\beta_0 approximation''. As a result of this procedure, the obtained
perturbation series looks like a continued-fraction representation. A
subsequent generalization of this procedure is developed, in order to optimize
the convergence of the final series, along the lines of the Fastest Convergence
Prescription. This generalized BLM procedure is applied to the Adler D function
and also to R_{e^+e^-} in QCD at N$^3$LO. A further extension of the sequential
BLM is presented which makes use of additional parameters to optimize the
convergence of the power-series at any fixed order of expansion.


title:
Constraints on the photon charge based on observations of extragalactic
  sources

abstract:
  Using modern high-resolution observations of extragalactic compact radio
sources we obtain an estimate of the upper bound on a photon electric charge at
the level $e_{\gamma} \lesssim 3 \cdot 10^{-33}$ of elementary charge (assuming
the photon charge to be energy independent). This is three orders of magnitude
better than the limit obtained with radio pulsar timing. Also we set a limit on
a photon charge in the gamma-ray band (energies about 0.1 MeV). In future the
estimate made for extragalactic sources can be significantly improved.


title: Subtraction at NNLO

abstract:
  We propose a framework for the implementation of a subtraction formalism at
NNLO in QCD, based on an observable- and process-independent cancellation of
infrared singularities. As a first simple application, we present the
calculation of the contribution to the e+e- dijet cross section proportional to
C_F T_R


title: Topics on High-Energy Elastic Hadron Scattering

abstract:
  We review the main results we have obtained in the area of high-energy
elastic hadron scattering and presented in this series of Workshops on Hadronic
Interactions. After an introduction to some basic experimental and theoretical
concepts, we survey the results reached by means of four approaches: analytic
models, model-independent analyses, eikonal models and nonperturbative QCD.
Some of the ongoing researches and future perspectives are also outlined.


title: Derivative Dispersion Relations

abstract:
  We discuss some analytical and numerical aspects related to the replacement
of integral dispersion relations by derivative relations and also the practical
applicability of the derivative approach in the investigation of high-energy
elastic hadron-hadron scattering. Making use of a Monopole Pomeron model and
singly subtracted integral and derivative dispersion relations, we present the
results of fits to the experimental data on the total cross sections and the
ratio of the real to the imaginary part of the forward elastic scattering
amplitude (proton-proton and antiproton-proton interactions). The emphasis is
on the region of low energies and, in particular, we show that once the
subtraction constant is used as a free fit parameter the derivative approach is
equivalent to the integral approach even below the energy cutoff of the fitted
data.


title:
Appearance and disappearance signals at a beta-Beam and a Super-Beam
  facility

abstract:
  In this letter we present the study of the eightfold degeneracy in the
$(\theta_{13},\delta)$ measurement including both appearance and disappearance
channels. We analyse, for definiteness, the case of a standard low-$\gamma$
$\beta$-Beam and a 4 MWatt SPL Super-Beam facility, both aiming at a UNO-like
Mton water Cerenkov detector located at the Frejus laboratory, $L = 130$ km. In
the $\beta$-Beam case, the \nue disappearance channel does not improve the
$(\theta_{13},\delta)$ measurement when a realistic (i.e. $\ge$ 2%) systematic
error is included. In the Super-Beam case, the \numu disappearance channel
could, instead, be quite useful in reducing the impact of the eightfold
degeneracy in the $(\theta_{13},\delta)$ measurement, especially once the error
on the atmospheric mass difference is fully taken into account in the fit.


title: Degeneracies at a beta-Beam and a Super-Beam Facility

abstract:
  The presence of degeneracies can considerably worsen the measure of the
neutrino oscillation parameters $\theta_{13}$ and $\delta$. We study the
physics reach of a specific ``CERN'' setup, using a standard $\beta$-Beam and
Super-Beam facility. These facilities have a similar sensitivity in both
parameters. Their combination does not provide any dramatic improvement as
expected due to their almost identical L/E ratio. We analyse if adding the
correspondent disappearance channels can help in reducing the effect of
degeneracies in the $(\theta_{13},\delta)$ measure.


title:
Neutrino Masses in Supersymmetric SU(3)_C x SU(2)_L x U(1)_Y x U(1)'
  Models

abstract:
  We consider various possibilities for generating neutrino masses in
supersymmetric models with an additional U(1)' gauge symmetry. One class of
models involves two extra U(1)' x U(1)'' gauge symmetries, with U(1)'' breaking
at an intermediate scale and yielding small Dirac masses through
high-dimensional operators. The right-handed neutrinos N^c_i can naturally
decouple from the low energy U(1)', avoiding cosmological constraints. A
variant version can generate large Majorana masses for N^c_i and an ordinary
see-saw. We secondly consider models with a pair of heavy triplets which couple
to left-handed neutrinos. After integrating out the heavy triplets, a small
neutrino Majorana mass matrix can be generated by the induced
non-renormalizable terms. We also study models involving the double-see-saw
mechanism, in which heavy Majorana masses for N^c_i are associated with the
TeV-scale of U(1)' breaking. We give the conditions to avoid runaway directions
in such models and discuss simple patterns for neutrino masses.


title: A Langevin equation for high energy evolution with pomeron loops

abstract:
  We show that the Balitsky-JIMWLK equations proposed to describe non-linear
evolution in QCD at high energy fail to include the effects of fluctuations in
the gluon number, and thus to correctly describe both the low density regime
and the approach towards saturation. On the other hand, these fluctuations are
correctly encoded (in the limit where the number of colors is large) in
Mueller's color dipole picture, which however neglects saturation. By combining
the dipole picture at low density with the JIMWLK evolution at high density, we
construct a generalization of the Balitsky hierarchy which includes the
particle number fluctuations, and thus the pomeron loops. After an additional
coarse-graining in impact parameter space, this hierarchy is shown to reduce to
a Langevin equation in the universality class of the stochastic
Fisher-Kolmogorov-Petrovsky-Piscounov (sFKPP) equation. This equation implies
that the non-linear effects in the evolution become important already in the
high momentum regime where the average density is small, which signals the
breakdown of the BFKL approximation.


title: How Stueckelberg Extends the Standard Model and the MSSM

abstract:
  Abelian vector bosons can get massive through the Stueckelberg mechanism
without spontaneous symmetry breaking via condensation of Higgs scalar fields.
This appears very naturally in models derived from string theory and
supergravity. The simplest scenarios of this type consist of extensions of the
Standard Model (SM) or the minimal supersymmetric standard model (MSSM) by an
extra U(1)_X gauge group with Stueckelberg type couplings. For the SM, the
physical spectrum is extended by a massive neutral gauge boson Z' only, while
the extension of the MSSM contains a CP-even neutral scalar and two extra
neutralinos. The new gauge boson Z' can be very light compared to other models
with U(1)' extensions. Among the new features of the Stueckelberg extension of
the MSSM, the most striking is the possibility of a new lightest supersymmetric
particle (LSP) chi_{St}^0 which is mostly composed of Stueckelberg fermions. In
this scenario the LSP of the MSSM chi_1^0 is unstable and decays into
chi_{St}^0. Such decays alter the signatures of supersymmetry and have impact
on searches for supersymmetry in accelerator experiments. Further, with
R-parity invariance, chi_{St}^0 is the new candidate for dark matter.


title: Exotic hybrid mesons in hard electroproduction

abstract:
  We estimate the sizeable cross section for deep exclusive electroproduction
of an exotic $J^{PC}=1^{-+}$ hybrid meson in the Bjorken regime. The production
amplitude scales like the one for usual meson electroproduction, i.e. as
$1/Q^2$. This is due to the non-vanishing leading twist distribution amplitude
for the hybrid meson, which may be normalized thanks to its relation to the
energy momentum tensor and to the QCD sum rules technique. The hard amplitude
is considered up to next-to-leading order in $\alpha_{S}$ and we explore the
consequences of fixing the renormalization scale ambiguity through the BLM
procedure. We study the particular case where the hybrid meson decays through a
$\pi\eta $ meson pair. We discuss the $\pi\eta$ generalized distribution
amplitude and then calculate the production amplitude for this process. We
propose a forward-backward asymmetry in the production of $\pi$ and $\eta$
mesons as a signal for the hybrid meson production. We briefly comment on
hybrid electroproduction at very high energy, in the diffractive limit where a
QCD Odderon exchange mechanism should dominate. The conclusion of our study is
that hard electroproduction is a promissing way to study exotic hybrid mesons,
in particular at JLAB, HERA (HERMES) or CERN (Compass).


title: On BLM scale fixing in exclusive processes

abstract:
  We discuss the BLM scale fixing procedure in exclusive electroproduction
processes in the Bjorken regime. We show that in the case of vector meson
production the usual way to aplly the BLM method fails due to singularities
present in equations fixing the BLM scale. We argue that the BLM scale should
be extracted from the squared amplitudes which are directly related to
observables.


title: Two photon annihilation of Kaluza-Klein dark matter

abstract:
  We investigate the fermionic one-loop cross section for the two photon
annihilation of Kaluza-Klein (KK) dark matter particles in a model of universal
extra dimensions (UED). This process gives a nearly mono-energetic gamma-ray
line with energy equal to the KK dark matter particle mass. We find that the
cross section is large enough that if a continuum signature is detected, the
energy distribution of gamma-rays should end at the particle mass with a peak
that is visible for an energy resolution of the detector at the percent level.
This would give an unmistakable signature of a dark matter origin of the
gamma-rays, and a unique determination of the dark matter particle mass, which
in the case studied should be around 800 GeV. Unlike the situation for
supersymmetric models where the two-gamma peak may or may not be visible
depending on parameters, this feature seems to be quite robust in UED models,
and should be similar in other models where annihilation into fermions is not
helicity suppressed. The observability of the signal still depends on largely
unknown astrophysical parameters related to the structure of the dark matter
halo. If the dark matter near the galactic center is adiabatically contracted
by the central star cluster, or if the dark matter halo has substructure
surviving tidal effects, prospects for detection look promising.


title:
Cosmological Evolution of Interacting Dark Energy Models with Mass
  Varying Neutrinos

abstract:
  In this paper we consider the cosmological implications of dark energy models
with a coupled system of a dynamical scalar field (the quintessence) and the
neutrinos. By detailed numerical calculations we study the various
possibilities on the evolution and the fates of the universe in this class of
models. Our results show that due to the interaction with quintessence,
neutrinos could be dominant over the quintessence in the future universe,
however would eventually decay away.


title:
Analytical evolution of nucleon structure functions with power
  corrections at twist-4 and predictions for ultra-high energy neutrino-nucleon
  cross section

abstract:
  In this paper we present an analytic result for the evolution in $Q^2$ of the
structure functions for the neutrino-nucleon interaction, valid at twist-2 in
the region of small values of the Bjorken $x$ variable and for soft
non-perturbative input. In the special case of flat initial conditions, we
include in the calculation also the contribution of the twist-4 gluon
recombination corrections, whose effect in the evolution is explicitly
determined. Finally, we estimate the resulting charged-current neutrino-nucleon
total cross section and discuss its behavior at ultra-high energies.


title:
Deep Virtual Compton Scattering and the Nucleon Generalized Parton
  Distributions

abstract:
  In the following, the subject of Deep Virtual Compton Scattering on the
nucleon and its relation to the recently introduced concept of Generalized
Parton Distributions are briefly reviewed. The general theoretical framework
and the links between theory and experiment will be outlined and the recently
published data which look promising for the development of this field will be
discussed. Finally, the experimental prospectives of the domain will be
presented.


title:
The transverse energy and the charged particle multiplicity in a
  statistical model with expansion

abstract:
  Global variables such as the transverse energy and the charged particle
multiplicity and their ratio are evaluated, in a statistical model with
expansion, for heavy-ion collisions from AGS to RHIC at $\sqrt{s_{NN}}=200$
GeV. Full description of decays of hadron resonances is applied. The
predictions of the model done at the freeze-out parameters established
independently from observed particle yields and $p_{T}$ spectra agree well with
the experimental data. However, some (explicable) overestimation of the ratio
has been found.


title:
The transverse energy per charged particle estimates in the framework of
  a statistical model

abstract:
  The transverse energies and the charged particle multiplicities at
midrapidity as well as their ratio, $dE_{T}/d\eta\mid_{mid} /
dN_{ch}/d\eta|_{mid}$, are evaluated in a statistical model with expansion for
the wide range of heavy-ion collisions, from AGS to RHIC at $\sqrt{s_{NN}}=200$
GeV. Full description of decays of hadron resonances is applied in calculations
of both $dE_{T}/d\eta|_{mid}$ and $dN_{ch}/d\eta|_{mid}$. The predictions of
the model at the freeze-out parameters, established independently from observed
particle yields and $p_{T}$ spectra, agree well with the experimental data.


title:
Decay Rate Difference in the Neutral B-System: Delta Gamma Bs and Delta
  Gamma Bd

abstract:
  We review the theoretical status of the predictions for the decay rate
differences in the neutral B-system. We find (Delta Gamma/Gamma) Bs = (12 pm 5)
10^(-2) and (Delta Gamma/Gamma) Bd = (3 pm 1.2) 10^(-3).


title: Relevance of the strange quark sector in chiral perturbation theory

abstract:
  Results obtained in recent years in the strange quark sector of chiral
perturbation theory are reviewed and the theoretical relevance of this sector
for probing the phase structure of QCD at zero temperature with respect to the
variation of the number of massless quarks is emphasized.


title: Polarization in charmless $B \to VV$ decays

abstract:
  Recent data for B decays to two light vector mesons show that the
longitudinal amplitude dominates in $B^0 \to \rho^+ \rho^-$, $B^+ \to \rho^+
\rho^0$, $\rho^0 K^{*+}$ decays and not in $B^0 \to \phi K^{*0}$, $B^+ \to \phi
K^{*+}$. We consider rescattering mediated by charmed resonances, finding that
in $B \to \phi K^*$ it can be responsible of the suppression of the
longitudinal amplitude. A similar result is found for $B \to \rho K^{*}$.


title:
Infrared finitness and analyticity properties of the loop-loop
  scattering amplitudes in gauge theories

abstract:
  We shall discuss about the infrared finitness and some analyticity properties
of the loop-loop scattering amplitudes in gauge theories, when going from
Minkowskian to Euclidean theory, and we shall see how they can be related to
the still unsolved problem of the s-dependence of the hadron-hadron total
cross-sections.


title: Perturbative SO(10) Grand Unification

abstract:
  We consider a phenomenologically viable SO(10) grand unification model of the
unification scale $M_G$ around $10^{16} $ GeV which reproduces the MSSM at low
energy and allows perturbative calculations up to the Planck scale $M_P$ or the
string scale $M_{st}$. Both requirements strongly restrict a choice of Higgs
representations in a model. We propose a simple SO(10) model with a set of
Higgs representations $\{2 \times {\bf 10} + {\bf \bar{16}} + {\bf 16} + {\bf
45} \}$ and show its phenomenological viability. This model can indeed
reproduce the low-energy experimental data relating the charged fermion masses
and mixings. Neutrino oscillation data can be consistently incorporated in the
model, leading to the right-handed neutrino mass scale $M_R \simeq M_G^2/M_P$.
Furthermore, there exists a parameter region which results the proton life time
consistent with the experimental results.


title:
Fittino, a program for determining MSSM parameters from collider
  observables using an iterative method

abstract:
  Provided that Supersymmetry (SUSY) is realized, the Large Hadron Collider
(LHC) and the future International Linear Collider (ILC) may provide a wealth
of precise data from SUSY processes. An important task will be to extract the
Lagrangian parameters. On this basis the goal is to uncover the underlying
symmetry breaking mechanism from the measured observables. In order to
determine the SUSY parameters, the program Fittino has been developed. It uses
an iterative fitting technique and a Simulated Annealing algorithm to determine
the SUSY parameters directly from the observables without any a priori
knowledge of the parameters, using all available loop-corrections to masses and
couplings. Simulated Annealing is implemented as a stable and efficient method
for finding the optimal parameter values. The theoretical predictions can be
provided from any program with SUSY Les Houches Accord interface. As fit
result, a set of parameters including the full error matrix and two-dimensional
uncertainty contours are obtained. Pull distributions can automatically be
created and allow an independent cross-check of the fit results and possible
systematic shifts in the parameter determination. A determination of the
importance of the individual observables for the measurement of each parameter
can be performed after the fit. A flexible user interface is implemented,
allowing a wide range of different types of observables and a wide range of
parameters to be used.


title: QCD and Jets

abstract:
  These lectures introduce some of the basic methods of perturbative QCD and
their applications to phenomenology at high energy. Emphasis is given to
techniques that are used to study QCD and related field theories to all orders
in perturbation theory, with introductions to infrared safety, factorization
and evolution in high energy hard scattering.


title: Pair production with neutrinos and high-intensity laser fields

abstract:
  We present a detailed calculation of the electron-positron production rate
using neutrinos in an intense laser field. The computation is done for the
process neutrino to neutrino + electron + positron via the neutral channel and
within the framework of the Standard Model. The production rates are tabulated
for a range of incoming neutrino energies in an electromagnetic field similar
to what can be attained by current high-intensity lasers.


title:
Chromomagnetic Instability and the LOFF state in a two flavor Color
  Superconductor

abstract:
  We explore the relation between the chromomagnetic instability of a
homogeneous two flavor color superconductor and the LOFF state. We perturb the
free energy of the 2SC by generating a small net momentum for the quark pair.
We find that the imaginary Meissner mass of a particular gluon implies that the
LOFF state is energetically favored.


title: Hard-Loop Dynamics of Non-Abelian Plasma Instabilities

abstract:
  Non-Abelian plasma instabilities may be responsible for the fast apparent
quark-gluon thermalization in relativistic heavy-ion collisions if their
exponential growth is not hindered by nonlinearities. We study the real-time
evolution of instabilities in an anisotropic non-Abelian plasma with an SU(2)
gauge group in the hard-loop approximation. We find exponential growth of
non-Abelian plasma instabilities both in the linear and in the strongly
nonlinear regime, with only a brief phase of subexponential behavior in
between.


title: Shining on an Orbifold

abstract:
  By shining a hypermultiplet from one side of the bulk of a flat
five-dimensional orbifold, supersymmetry can be broken by boundary conditions.
The extra dimension is stabilized in a supersymmetric way, and by computing the
four-dimensional effective potential for the radion it is shown that
supersymmetry breaking does not damage our radius stabilization mechanism. The
low energy theory contains the radion and two complex scalars that are massless
in the global supersymmetric limit and are stabilized by tree level
supergravity effects. It is shown that radion mediation can play the dominant
role in communicating supersymmetry breaking to the visible sector. It is also
shown that at tree level, contact terms are exponentially suppressed.


title: Smallness of Leptonic $\theta_{13}$ and Discrete Symmetry

abstract:
  The leptonic mixing angle $\theta_{13}$ is known to be small. If it is indeed
tiny, the simplest explanation is that charged leptons mix only in the
$\mu-\tau$ sector and neutrinos only in the 1-2 sector. We show that this
pattern may be explained by the discrete symmetry $Z_2 \times Z_2$ of a
complete Lagrangian, which has 2 Higgs doublets and 2 Higgs triplets (or 2
heavy right-handed singlet neutrinos). In the case of Higgs triplets, the
Majorana neutrino masses are arbitrary, whereas in the case of heavy singlet
neutrinos, an inverted hierarchy is predicted. Lepton-Flavor-Violation effects,
present only in the $\mu-\tau$ sector, are analyzed in detail: the LFV
$\tau$-decay rates are predicted below the present bounds by a few orders of
magnitude, whereas LFV Higgs decays could allow for a direct test of the model.


title: The photon polarization in B -> X gamma in the standard model

abstract:
  The standard model prediction for the $B\to X_{s,d}\gamma$ decay amplitude
with a right-handed photon is believed to be tiny, suppressed by $m_{s,d}/m_b$,
compared to the amplitude with a left-handed photon. We show that this
suppression is fictitious: in inclusive decays, the ratio of these two
amplitudes is only suppressed by $g_s/(4\pi)$, and in exclusive decays by
$\Lambda_{QCD}/m_b$. The suppression is not stronger in $B\to X_d\gamma$ decays
than it is in $B\to X_s\gamma$. We estimate that the time dependent CP
asymmetries in $B\to K^*\gamma$, $\rho\gamma$, $K_S\pi^0\gamma$, and
$\pi^+\pi^-\gamma$ are of order 0.1 and that they have significant
uncertainties.


title: Baryogenesis after Hyperextended Inflation

abstract:
  We study a baryogenesis mechanism operating in the context of hyperextended
inflation and making use of a coupling between the scalar field and a standard
model global current, such as B or B-L. The method is efficient at temperatures
at which these currents are not conserved due to some higher dimensional
operator. The particle physics and cosmological phenomenology are discussed. We
consider constraints stemming from nucleosynthesis and solar system
experiments.


title: Probing Electroweak Top Quark Couplings at Hadron Colliders

abstract:
  We consider QCD t\bar{t}\gamma and t\bar{t}Z production at hadron colliders
as a tool to measure the tt\gamma and ttZ couplings. At the Tevatron it may be
possible to perform a first, albeit not very precise, test of the tt\gamma
vector and axial vector couplings in t\bar{t}\gamma production, provided that
more than 5 fb^{-1} of integrated luminosity are accumulated. The t\bar{t}Z
cross section at the Tevatron is too small to be observable. At the CERN Large
Hadron Collider (LHC) it will be possible to probe the tt\gamma couplings at
the few percent level, which approaches the precision which one hopes to
achieve with a next-generation e^+e^- linear collider. The LHC's capability of
associated QCD t\bar{t}V (V=\gamma, Z) production has the added advantage that
the tt\gamma and ttZ couplings are not entangled. For an integrated luminosity
of 300 fb^{-1}, the ttZ vector (axial vector) coupling can be determined with
an uncertainty of 45-85% (15-20%), whereas the dimension-five dipole form
factors can be measured with a precision of 50-55%. The achievable limits
improve typically by a factor of 2-3 for the luminosity-upgraded (3 ab^{-1})
LHC.


title: The Gluon Sivers Distribution in D production at RHIC

abstract:
  The single transverse spin asymmetry in D meson production at RHIC can
provide a clean measure of the gluon Sivers distribution function. At
intermediate rapidity, D production is largely dominated by the elementary gg
-> c c-bar channel, where there cannot be any transverse spin transfer.
Therefore, any transverse single spin asymmetry observed for D's produced in
polarized proton-proton interactions can only originate from the Sivers effect
in the gluon distribution functions. A sizeable transverse single spin
asymmetry measured by PHENIX or STAR experiments would then give direct
information on the size of the gluon Sivers distribution function.


title: Radiation in Lorentz violating electrodynamics

abstract:
  Synchrotron radiation is analyzed in the classical effective Lorentz
invariance violating model of Myers-Pospelov. Within the full far-field
approximation we compute the electric and magnetic fields, the angular
distribution of the power spectrum and the total emitted power in the m-th
harmonic, as well as the polarization. We find the appearance of rather
unexpected and large amplifying factors, which go together with the otherwise
negligible naive expansion parameter. This opens up the possibility of further
exploring Lorentz invariance violations by synchrotron radiation measurements
in astrophysical sources where these amplifying factors are important.


title:
Supernova Neutrinos and the absolute scale of neutrino masses - a
  Bayesian approach

abstract:
  We apply Bayesian methods to study the sensitivity to neutrino masses of a
Galactic supernova neutrino signal. Our procedure makes use of the full
statistics of events and is remarkably independent of astrophysical
assumptions. Present detectors can reach a sensitivity down to $m_\nu \sim 1$
eV. Future megaton detectors can yield up to a factor of two improvement;
however, they will not be competitive with the next generation of tritium
$\beta$-decay and neutrinoless double $\beta$-decay experiments.


title: Strange Tribaryons as Nona-quark States

abstract:
  Strange tribaryons as nona-quark (9 quark) states is studied to describe the
S=-1 resonance S^0(3115) recently discovered in the reaction K- + ^4 He -> S^0
+ p. We have identified S^0(3115) as a member of the flavor 27-plet, in
particular, (F_{flavor},I_{isospin},J_{spin})=(27,1,1/2) or (27,1,3/2). The
color-magnetic interaction between quarks favors small multiplets in flavor and
spin, which leads to a natural explanation that I=1 is the lowest state among
the S=-1 tribaryons with J=1/2. Classification of the S^+ -state recently
reported as well as possible locations of other light strange tribaryons such
as (10*,0,3/2) with S=-1, (8,1/2,1/2) with S=-2 and (1,0,3/2) with S=-3 are
also discussed.


title: Virtual light-by-light scattering and the g factor of a bound electron

abstract:
  The contribution of the light-by-light diagram to the g factor of electron
and muon bound in Coulomb field is obtained. For electron in a ground state,
our results are in good agreement with the results of other authors obtained
numerically for large Z. For relatively small Z our results have essentially
higher accuracy as compared to the previous ones. For muonic atoms, the
contribution is obtained for the first time with the high accuracy in whole
region of Z.


title:
Form Factors of Composite Systems by Generalized Wigner-Eckart Theorem
  for Poincar\'e group

abstract:
  The relativistic approach to electroweak properties of two-particle composite
systems developed previously is generalized here to the case of nonzero spin.
This approach is based on the instant form of relativistic Hamiltonian
dynamics. A special mathematical technique is used for the parametrization of
matrix elements of electroweak current operators in terms of form factors. The
parametrization is a realization of the generalized Wigner--Eckart theorem on
the Poincar\'e group, form factors are corresponding reduced matrix elements
and they have the sense of distributions (generalized functions). The
electroweak current matrix element satisfies the relativistic covariance
conditions and in the case of electromagnetic current it also automatically
satisfies the conservation law.


title: Top quark couplings at ILC: six and eight fermion final states

abstract:
  I discuss the calculation of cross sections for processes with six and eight
fermions in the final state, contributing to single-top production and
associated top-Higgs production at a linear collider. I describe the schemes
for the treatment of finite decay widths implemented in the matrix element
generator O'Mega and give a numerical comparison for single-top production. In
the case of single top production, after reducing vector boson fusion
backgrounds by appropriate cuts, the effect of including the full six fermion
final state amounts to 2-5%. In associated top-Higgs production, non-resonant
electroweak backgrounds are of a similar magnitude while QCD backgrounds are
much larger.


title: Three-flavour effects and CP- and T-violation in neutrino oscillations

abstract:
  Some theoretical aspects of 3-flavour (3f) neutrino oscillations are
reviewed. These include: general properties of 3f oscillation probabilities;
matter effects in \nu_\mu \leftrightarrow \nu_\tau oscillations; 3f effects in
oscillations of solar, atmospheric, reactor and supernova neutrinos and in
accelerator long-baseline experiments; CP and T violation in neutrino
oscillations in vacuum and in matter, and the problem of U_{e3}.


title:
The gluonic condensate from the hyperfine splitting $M_{\rm
  cog}(\chi_{cJ})-M(h_c)$ in charmonium

abstract:
  The precision measurement of the hyperfine splitting $\Delta_{\rm HF} (1P,
c\bar c)=M_{\rm cog} (\chi_{cJ}) - M(h_c) = -0.5 \pm 0.4$ MeV in the
Fermilab--E835 experiment allows to determine the gluonic condensate $G_2$ with
high accuracy if the gluonic correlation length $T_g$ is fixed. In our
calculations the negative value of $\Delta_{\rm HF} = -0.3 \pm 0.4$ MeV is
obtained only if the relatively small $T_g = 0.16$ fm and $G_2 = 0.065 (3)$
GeV${}^4$ are taken. These values correspond to the ``physical'' string tension
$(\sigma \approx 0.18 $ GeV$^2$). For $T_g \ge 0.2$ fm the hyperfine splitting
is positive and grows for increasing $T_g$. In particular for $T_g = 0.2$ fm
and $G_2 = 0.041 (2)$ GeV${}^4$ the splitting $\Delta_{\rm HF} = 1.4 (2)$ MeV
is obtained, which is in accord with the recent CLEO result.


title: Statistical-Thermal Model Calculations using THERMUS

abstract:
  Selected results obtained using THERMUS, a newly-developed
statistical-thermal model analysis package, are presented.


title:
Complete description of polarization effects in e^+e^- pair production
  by a photon in the field of a strong laser wave

abstract:
  We consider production of a e^+e^- pair by a high-energy photon in the field
of a strong laser wave. A probability of this process for circularly or
linearly polarized laser photons and for arbitrary polarization of all other
particles is calculated. We obtain the complete set of functions which describe
such a probability in a compact invariant form. Besides, we discuss in some
detail the polarization effects in the kinematics relevant to the problem of
electron-photon conversion at photon-photon and electron-photon colliders.


title:
Q-ball Formation in Affleck-Dine Baryogenesis with Gravity-mediated SUSY
  Breaking

abstract:
  To date, the properties of Q-balls arising from an Affleck-Dine condensate in
gravity-mediated SUSY breaking have been obtained primarily through numerical
simulations. In this work, we will derive the expected charge of the Q-balls
formed in such a scenario through an analytical treatment. We will also examine
the numerically observed difference between Q-ball formation in weakly charged
condensates and formation in strongly charged condensates.


title: The Jigsaw Puzzle of Scalar Mesons

abstract:
  This is a brief overview of light scalar meson spectroscopy, addressing
longstanding problems, recent developments and future perspectives. In
particular, a new comprehensive data analysis is introduced which will help to
unravel the structure of the f_0(980).


title: Long distance effects and strangeness in the nucleon

abstract:
  We discuss the calculation of the strange magnetic radius of the proton in
chiral perturbation theory. In particular we investigate the low energy
component of the loop integrals involving kaons. We separate the chiral
calculation into a low energy part and a high energy component through use of a
momentum space separation scale. This separation shows that most of the chiral
calculation comes from high energies where the effective field theory treatment
is not valid. The resulting low energy prediction is in better agreement with
dispersive treatments. Finally, we briefly discuss magnetic moments and show
how our techniques can help resolve an old puzzle in understanding the magnetic
moments of the proton and Sigma^+.


title: A Model for the Generalized Parton Distribution of the Pion

abstract:
  We calculate the off-forward structure function of the pion within a simple
model where the size of the pion is accounted for using a momentum cut-off.
Twist-two and twist-three generalized parton distributions are extracted.
Relations between twist-three and twist-two contributions are obtained, the
origin of which is not kinematical as they differ from those arising from the
Wandzura-Wilczek approximation.


title: QCD Supersymmetry and Low Energy Gravity

abstract:
  In this contributed paper we discuss some aspects of scenarios with Extra
Dimensions at the LHC and in cosmic rays.


title: QLC relation and neutrino mass hierarchy

abstract:
  Latest measurements have revealed that the deviation from a maximal solar
mixing angle is approximately the Cabibbo angle, i.e. QLC relation. We argue
that it is not plausible that this deviation from maximality, be it a
coincidence or not, comes from the charged lepton mixing. Consequently we have
calculated the required corrections to the exactly bimaximal neutrino mass
matrix ansatz necessary to account for the solar mass difference and the solar
mixing angle. We point out that the relative size of these two corrections
depends strongly on the hierarchy case under consideration. We find that the
inverted hierarchy case with opposite CP parities, which is known to guarantee
the RGE stability of the solar mixing angle, offers the most plausible scenario
for a high energy origin of a QLC-corrected bimaximal neutrino mass matrix.
This possibility may allow us to explain the QLC relation in connection with
the origin of the charged fermion mass matrices.


title:
Gauge invariance, radiative interferences and properties of vector
  mesons

abstract:
  We state the implications on the properties of vector mesons due to gauge
invariance. In particular, we find that polarized vector mesons exhibit a
property in the radiation distribution of order $\omega^{-1}$ in the photon
energy, namely it is null when the gyromagnetic ratio becomes $g=2$. Therefore,
the generalization of the Burnett-Kroll theorem for polarized vector-meson
states is held only if $g=2$. In addition, radiative interferences between the
electric charge and any gauge invariant term is found to be parametrized by a
common global factor which can be used to extract information of the involved
states by a proper choice of the kinematical region, where they could be
relevant.


title:
Correlator of heavy-quark currents at small q^2 in the large-beta_0
  limit

abstract:
  The correlator of vector heavy-quark currents at small q^2 is considered in
the large-beta_0 limit. The leading IR renormalon ambiguity of the sum of the
perturbative series is canceled by the UV renormalon ambiguity of the gluon
condensate. Asymptotic behaviour of the perturbative series is obtained in a
model-independent way, up to a single unknown normalization factor.
Gluon-virtuality distribution functions for the perturbative correction are
calculated.


title: I Have Come to Praise Charm, not Bury it

abstract:
  The case for further dedicated studies of charm dynamics is presented as
driven by three complementary motivations: core lessons on QCD and
nonperturbative dynamics in general can be learnt; those can be applied with
great profit in analyses of B decays; charm decays offer a novel portal to New
Physics in particular through CP studies.