title: Heavy Ion Physics at the LHC

abstract:
  The ion-ion center of mass energies at the LHC will exceed that at RHIC by
nearly a factor of 30, providing exciting opportunities for addressing unique
physics issues in a completely new energy domain. Some highlights of this new
physics domain are presented here. We briefly describe how these collisions
will provide new insights into the high density, low momentum gluon content of
the nucleus expected to dominate the dynamics of the early state of the system.
We then discuss how the dense initial state of the nucleus affects the lifetime
and temperature of the produced system. Finally, we explain how the high energy
domain of the LHC allows abundant production of `rare' processes, hard probes
calculable in perturbative quantum chromodynamics, QCD. At the LHC, high
momentum jets and $b \bar b$ bound states, the $\Upsilon$ family, will be
produced with high statistics for the first time in heavy ion collisions.


title: Open and Hidden Charm Production in d$A$ Collisions at RHIC and LHC

abstract:
  We discuss aspects of open and hidden charm production in deuterium-nucleus
collisions at RHIC and LHC energies. We describe calculations of the total $c
\bar c$ cross section and the charm quark transverse momentum distributions. We
next explain how shadowing and moderate nuclear absorption can explain the
PHENIX $J/\psi$ dAu/$pp$ ratios and predict the combined effect of shadowing
and absorption in 6.2 TeV d+Pb collisions.


title: Open and Hidden Charm Production at RHIC and LHC

abstract:
  We discuss aspects of open and hidden charm production in hadron-nucleus
collisions at RHIC and LHC energies. We first discuss the extraction of the
total charm cross section in lower energy collisions and how it compares to
next-to-leading order quantum chromodynamics calculations. We then describe
calculations of the transverse momentum distributions and their agreement with
the shape of the measured STAR transverse momentum distributions. We next
explain how shadowing and moderate nuclear absorption can explain the PHENIX
$J/\psi$ dAu/$pp$ ratios.


title: Cosmology of "Visible" Sterile Neutrinos

abstract:
  We point out that in scenarios with a low reheating temperature $T_R << 100$
MeV at the end of (the last episode of) inflation or entropy production, the
abundance of sterile neutrinos becomes largely independent of their coupling to
active neutrinos. Thus, cosmological bounds become less stringent than usually
assumed, allowing sterile neutrinos to be ``visible'' in future experiments.
For example, the sterile neutrino required by the LSND result does not have any
cosmological problem within these scenarios.


title: Prospect for relic neutrino searches

abstract:
  Unlike the relic photons, relic neutrinos have not so far been observed. The
Cosmic Neutrino Background (C$\nu$B) is the oldest relic from the Big Bang,
produced a few seconds after the Bang itself. Due to their impact in cosmology,
relic neutrinos may be revealed indireclty in the near future through
cosmological observations. In this talk we concentrate on other proposals, made
in the last 30 years, to try to detect the C$\nu$B directly, either in
laboratory searches (through tiny accelerations they produce on macroscopic
targets) or through astrophysical observations (looking for absorption dips in
the flux of Ultra-High Energy neutrinos, due to the annihilation of these
neutrinos with relic neutrinos at the Z-resonance). We concentrate mainly on
the first of these two possibilities.


title:
Lower Excitation Spectrum of the Nucleon and Delta in a Relativistic
  Chiral Quark Model

abstract:
  The lower excitation spectrum of the nucleon and $\Delta$ is calculated in a
relativistic chiral quark model. Contributions of the second order self-energy
and exchange diagrams due-to pion fields to the mass spectrum of the SU(2)
baryons are estimated. A splitting between N(939) and positive parity nucleon
resonance (Roper resonance) $N^*(1440)$ is reproduced with a reasonable
accuracy. The obtained structure of one-meson exchange interaction confirms a
prediction of the large $N_c$ limit approach stating that the mass splitting
between various baryon states receive contributions from operators which
simultaneously couple spin, isospin and orbital momentum. It is shown that
one-meson exchange interaction generates a splitting between negative parity
$N^*(1/2^-)$ and $N^*(3/2^-)$ states, and also between $\Delta^*(3/2^-)$ and
$\Delta^*(1/2^-)$ states in contrast to the non-relativistic Goldstone-Boson
Exchange based quark models. This splitting is due-to a relativistic operator
which couples the lower and upper orbital momentum of two interacting valence
quarks.


title:
Nuclear modification of valence-quark distributions and its effects on
  NuTeV sin^2 theta_W anomaly

abstract:
  We investigated a nuclear modification difference between up- and
down-valence quark distributions by analyzing structure function F_2 and
Drell-Yan cross-section ratios. Although nuclear modifications of the
valence-quark distributions themselves are rather well determined, it is
difficult to find their difference from the present data. We estimated such an
effect on the NuTeV sin^2 theta_W value and its uncertainty by the Hessian
method. At this stage, it is not large enough to explain the whole NuTeV
anomaly. However, the modification difference cannot be precisely determined,
so that further studies are needed.


title: Polyakov loop in chiral quark models at finite temperature

abstract:
  We describe how the inclusion of the gluonic Polyakov loop incorporates large
gauge invariance and drastically modifies finite temperature calculations in
chiral quark models after color neutral states are singled out. This generates
an effective theory of quarks and Polyakov loops as basic degrees of freedom.
We find a strong suppression of finite temperature effects in hadronic
observables triggered by approximate triality conservation (Polyakov cooling),
so that while the center symmetry breaking is exponentially small with the
constituent quark mass, chiral symmetry restoration is exponentially small with
the pion mass. To illustrate the point we compute some low energy observables
at finite temperature and show that the finite temperature corrections to the
low energy coefficients are $N_c$ suppressed due to color average of the
Polyakov loop. Our analysis also shows how the phenomenology of chiral quark
models at finite temperature can be made compatible with the expectations of
chiral perturbation theory. The implications for the simultaneous center
symmetry breaking-chiral symmetry restoration phase transition are also
discussed.


title: Relic density of dark matter in mSUGRA and non-universal SUGRA

abstract:
  The measurements of WMAP on the relic density of dark matter strongly
constrain supersymmetric models. In mSUGRA where the neutralino LSP is mostly a
bino only rather fine-tuned models survive. On the other hand the relic density
upper limit can be easily satisfied in models with a Higgsino or wino LSP.


title:
Kinetic equations for Bose-Einstein condensates from the 2PI effective
  action

abstract:
  We use the 2PI effective action of a relativistic scalar field theory to
derive kinetic equations for a Bose-condensed system near the phase
transition.We start from equations of motion derived within a 1/N-expansion at
NLO. In taking the non-relativistic limit we obtain a generalized
Gross-Pitaevskii equation for the condensate field. Within the Popov
approximation we explicitly compute the collision term up to order g^2 using
the Kadanoff-Baym formalism. For the sake of self-consistency we derive in the
same way a Boltzmann equation for the non-condensate distribution function. The
final results are in agreement to those previously obtained by Griffin, Nikuni
and Zaremba and by Stoof.


title: Dissipative neutrino oscillations in randomly fluctuating matter

abstract:
  The generalized dynamics describing the propagation of neutrinos in randomly
fluctuating media is analyzed: it takes into account matter-induced,
decoherence phenomena that go beyond the standard MSW effect. A widely adopted
density fluctuation pattern is found to be physically untenable: a more general
model needs to be instead considered, leading to flavor changing effective
neutrino-matter interactions. They induce new, dissipative effects that modify
the neutrino oscillation pattern in a way amenable to a direct experimental
analysis.


title:
Can dissipation prevent explosive decomposition in high-energy heavy ion
  collisions?

abstract:
  We discuss the role of dissipation in the explosive spinodal decomposition
scenario of hadron production during the chiral transition after a high-energy
heavy ion collision. We use a Langevin description inspired by microscopic
nonequilibrium field theory results to perform real-time lattice simulations of
the behavior of the chiral fields. We show that the effect of dissipation can
be dramatic. Analytic results for the short-time dynamics are also presented.


title:
Data for Polarization in Charmless B -> phi K^*: A Signal for New
  Physics?

abstract:
  The recent observations of sizable transverse fractions of B-> phi K* are
strongly contrary to the Standard Model expectation. We analyze all possible
new-physics four-quark operators. We find that two classes of new-physics
operators could offer resolutions to the B-> phi K* polarization anomaly. The
(1-\gamma_5)\otimes (1-\gamma_5) and \sigma(1-\gamma_5)\otimes
\sigma(1-\gamma_5) operators in the first class contribute to different
helicity amplitudes as H{00}: H{--}: H{++} ~ O(1/mb):O(1):O(1/mb^2), while the
contributions arising from (1+\gamma_5)\otimes (1+\gamma_5) and
\sigma(1+\gamma_5)\otimes \sigma(1+\gamma_5) operators in the second class to
various helicity amplitudes are given as H{00}: H{--}: H{++} ~
O(1/mb):O(1/mb^2):O(1). For each class of new physics, we find that all new
physics effects can be lumped into a single parameter. Two possible
experimental results of polarization phases, \arg(A_\perp)- \arg(A_\parallel) ~
\pi or 0, originating from the phase ambiguity in data, could be separately
accounted for by our two new-physics scenarios: (i) the first scenario with the
first class new-physics operators, and (ii) the second scenario with the second
class new-physics operators. The consistency between the data and the new
physics analysis, suggests a small new-physics weak phase, together with a
large strong phase. We obtain sizable transversely polarized amplitudes
\Lambda_{\parallel\parallel} + \Lambda_{\perp\perp} = \Lambda_{00}. In the
second scenario, we find \Lambda_{\parallel\parallel} ~ \Lambda_{\perp\perp},
while, in the first scenario, we obtain \Lambda_{\parallel\parallel} ~
\Lambda_{\perp\perp}/2. We discuss the impact of the new-physics weak phase on
observations.


title: QCD Color Glass Condensate Model in Warped Brane Models

abstract:
  Hadron-hadron interaction and Deep Inelastic Scattering (DIS) at very high
energies is dominated by events at small-$x_B$ regime. Interesting and complex
physical content of this regime is described by a phenomenological model called
McLerran-Venugopalan Color Glass Condensate (MVCGC) model. The advantage of
this formalism is the existence of a renormalization-type equation which
relates directly observable low energy (small-$x_B$) physics to high energy
scales where one expects the appearance of phenomena beyond Standard model.
After a brief argument about complexity of observations and their
interpretation, we extend CGC to warped space-times with brane boundaries and
show that in a hadron-hadron collision or DIS all the events - and not just
hard processes - have an extended particle distribution in the bulk. In other
word, particles living on the visible brane escape to the bulk. For an observer
on the brane the phenomenon should appear as time decoherence in the outgoing
particles or missing energy, depending on the time particles propagate in the
bulk before coming back to the brane. Assuming that primaries of UHECRs are
nucleons, the interaction of Ultra High Energy Cosmic Rays (UHECRs) in the
terrestrial atmosphere is the most energetic hadron-hadron interaction
available for observation. Using the prediction of CGC for gluon distribution
as well as classical propagation of relativistic particles in the bulk, we
constrain the parameter space of warped brane models.


title: Lightest Higgs Boson Mass in Split Supersymmetry with See-saw Mechanism

abstract:
  In the minimal supersymmetric standard model extended by including
right-handed neutrinos with see-saw mechanism, the neutrino Yukaka couplings
can be as large as the top-quark Yukawa couplings and thus the
neutrino/sneutrino may cause sizable effects in Higgs boson self-energy loops.
Our explicit one-loop calculations show that the neutrino/sneutrino effects may
have an opposite sign to top/stop effects and thus lighten the lightest Higgs
boson. If the soft-breaking mass of the right-handed neutrino is very large (at
the order of Majorana mass scale), such as in the split-SUSY scenario, the
effects can lower the lightest Higgs boson mass by a few tens of GeV. So the
Higgs mass bound of about 150 GeV in split-SUSY may be lowered significantly if
right-handed neutrinos come into play with see-saw mechanism.


title: Comments on Cahn and Sivers effects in SIDIS

abstract:
  The role of intrinsic $k_\perp$ in semi-inclusive Deep Inelastic Scattering
(SIDIS) processes ($\ell p \to \ell h X$) is studied within QCD parton model at
leading order. The resulting picture is applied to the description of the
weighted single spin asymmetry $A_{UL}^{\sin\phi_h}$ measured by HERMES. It is
shown that these data could be described by the Sivers mechanism alone.
However, the extracted Sivers functions fail to describe the HERMES data on
$A_{UT}^{\sin(\phi_h-\phi_S)}$.


title:
Parton intrinsic motion: unpolarized cross sections and the Sivers
  effect in inclusive particle production

abstract:
  We present a detailed study, performed in the framework of LO perturbative
QCD with the inclusion of spin and k_T effects, of unpolarized cross sections
for the Drell-Yan process and for inclusive pion and photon production in
hadronic collisions, in different kinematical situations. We find a
satisfactory agreement between theoretical predictions and experimental data.
This supports the study of spin effects and transverse single spin asymmetries
(SSA) within the same scheme. We then present results for SSA, generated by the
so-called Sivers effect, in inclusive pion production in proton-proton
collisions.


title: Dual Models of Gauge Unification in Various Dimensions

abstract:
  We construct a compactification of the heterotic string on an orbifold
T^6/Z_6 leading to the standard model spectrum plus vector--like matter. The
standard model gauge group is obtained as an intersection of three SO(10)
subgroups of E_8. Three families of SO(10) 16-plets are localized at three
equivalent fixed points. Gauge coupling unification favours existence of an
intermediate GUT which can have any dimension between five and ten. Various GUT
gauge groups occur. For example, in six dimensions one can have E_6 \times
SU(3), SU(4) \times SU(4) \times U(1)^2 or SO(8) \times SO(8), depending on
which of the compact dimensions are large. The different higher--dimensional
GUTs are `dual' to each other. They represent different points in moduli space,
with the same massless spectrum and ultraviolet completion.


title: An interacting quark-diquark model of baryons

abstract:
  A simple quark-diquark model of baryons with direct and exchange interactions
is constructed. Spectrum and form factors are calculated and compared with
experimental data. Advantages and disadvantages of the model are discussed.


title:
Consistency checks of pion-pion scattering data and chiral dispersive
  calculations

abstract:
  We have evaluated forward dispersion relations for scattering amplitudes that
follow from direct fits to several sets of pion-pion scattering experiments,
together with the precise K decay results, and high to energy data. We find
that some of the most commonly used experimental sets, as well as some recent
theoretical analyses based on Roy equations, do not satisfy these constraints
by several standard deviations. Finally, we provide a consistent pion-pion
amplitude by improving a global fit to data with these dispersion relations.


title: Probing Generalized Parton Distributions with Neutrino Beams

abstract:
  A short review of form factors, parton distribution functions and generalized
parton distributions is given. A possible application of generalized parton
distributions in the weak sector is discussed.


title: Spatial 't Hooft loop to cubic order in hot QCD II

abstract:
  In this paper we provide an exact formula for the area law of the 't Hooft
loop for any SU(N) gauge group to cubic order in hot gauge theory.
  The correction is very small for all temperatures above $T_c$, in stark
contrast to the cubic correction to the pressure. The gradient approximation in
a previous paper, only valid for large N, is in excellent agreement with the
present, exact evalution. Comparison to lattice data is good. Casimir scaling
is violated by a small amount not yet resolved by the precision of lattice
data.


title: Heavy Flavor Probes of Quark Matter

abstract:
  A brief survey of the role of heavy flavors as a probe of the state of matter
produced by high energy heavy ion collisions is presented. Specific examples
include energy loss, initial state gluon saturation, thermalization and flow.
The formation of quarkonium bound states from interactions in which multiple
heavy quark-antiquark pairs are initially produced is examined in general.
Results from statistical hadronization and kinetic models are summarized. New
predictions from the kinetic model for J/Psi at RHIC are presented.


title: NuTeV Anomaly & Strange-Antistrange Asymmetry

abstract:
  The NuTeV Collaboration reported a value of $\sin^{2}\theta_{w}$ measured in
neutrino-nucleon deep inelastic scattering, and found that the value is three
standard deviations from the world average value of other electroweak
measurements. If this result cannot be explained within conventional physics,
it must imply some novel physics beyond the standard model. We report the
correction from the asymmetric strange-antistrange sea by using both the
light-cone baryon-meson fluctuation model and the chiral quark model, and show
that a significant part of the NuTeV anomaly can be explained by the
strange-antistrange asymmetry.


title: Electroproduction of Vector Mesons at Small $x$

abstract:
  Vector meson electroproduction is analyzed within the two-gluon (2G) model
and the generalized parton distribution (GPD) approach at small $x$-Bjorken. We
demonstrate that 2G and GPD models are not completely equivalent. At the same
time, both models are in reasonable agreement with available experimental data
on light vector meson electroproduction.


title: Issues in the Extraction of m_s and V_us from Hadronic Tau Decay Data

abstract:
  Various complications encountered in the process of attempting to extract the
basic Standard Model parameters, m_s and V_us, from hadronic tau decay data are
discussed. Preliminary results for V_us, based on sum rules displaying good
convergence and stability, are also presented.


title: Heavy Antiquark Pentaquarks in the CM and GB Models

abstract:
  The splittings between positive parity pentaquarks containing a single heavy
(c,b) antiquark and four light (u,d) quarks are investigated in models having
spin-dependent interactions generated by either effective Goldstone boson
exchange or effective color magnetic exchange. Model-independent features of
these splittings are emphasized. Overlaps to the ``fall-apart'' decay
configurations ND, ND* or NB, NB*, relevant to decay couplings for the various
2-body pentaquark decays, are also computed.


title: Constituent quark models and pentaquark baryons

abstract:
  We discuss certain general features of the pentaquark picture for the theta,
its 10bar_F partner, Xi_{3/2}, and possible heavy quark analogues. Models
employing spin-dependent interactions based on either effective Goldstone boson
exchange or effective color magnetic exchange are also used to shed light on
possible corrections to the Jaffe-Wilczek and Karliner-Lipkin scenarios. Some
model-dependent features of the pentaquark picture (splitting patterns and
relative decay couplings) are also discussed in the context of these models.


title:
A new family dependent interaction in Tevatron top dilepton candidate
  events ?

abstract:
  New family dependent fermionic interactions have been conjectured in several
extensions of the Standard Model that range from Supersymmetry to composite
theory up to flavor interactions. Strong constraints on these theoretical
scenarios can be derived from light fermion phenomenology and from B-mesons
studies. Corresponding constrains on the top quark sector are, on the other
hand, rather week. Tevatron data, on top quark pair production and decay in
dilepton channel, may suggest some deviation from the Standard Model
expectations. Such a deviation can be successfully re-interpreted in terms of
an exotic top decay that can arise in several theories beyond the Standard
Model. Further investigations at present and future colliders will provide
crucial tests on the models under discussion.


title: Radiation of the Gravitational and Electromagnetic Binary Pulsars

abstract:
  The energy-loss formula of the production of gravitons by the binary is
derived in the source theory formulation of gravity. Then, the quantum
energy-loss formula involving radiative corrections is derived. We postulate an
idea that gravitational pulsars are present in our universe and that radiative
corrections play a role in the physics of the cosmological scale. In the last
part of the article, we consider so called electromagnetic pulsar which is
formed by two particles with the opposite electrical charges moving in the
constant magnetic field and generating the electromagnetic pulses. We think
that the cosmological analogue is possible.


title: Open Problems in Heavy Quarkonium Physics

abstract:
  Some recent progress and a personal selection of open problems in heavy
quarkonium physics (spectroscopy, decay and production) inspired by the
activity of the Quarkonium Working Group are reviewed.


title:
QGSJET-II: towards reliable description of very high energy hadronic
  interactions

abstract:
  Since a number of years the QGSJET model has been successfully used by
different groups in the field of high energy cosmic rays. Current work is
devoted to the first general update of the model. The key improvement is
connected to an account for non-linear interaction effects which are of crucial
importance for reliable model extrapolation into ultra-high energy domain. The
proposed formalism allows to obtain a consistent description of hadron-hadron
cross sections and hadron structure functions and to treat non-linear effects
explicitely in individual hadronic and nuclear collisions. Other ameliorations
concern the treatment of low mass diffraction, employment of realistic nuclear
density profiles, and re-calibration of model parameters using a wider set of
accelerator data.


title: The Two Higgs Doublet Model and the Multiple Point Principle

abstract:
  According to the multiple point principle, Nature adjusts coupling parameters
so that many vacuum states exist and each has approximately zero vacuum energy
density. We apply this principle to the general two-Higgs doublet extension of
the Standard Model, by requiring the existence of a large set of degenerate
vacua at an energy scale much higher than the presently realized electroweak
scale vacuum. It turns out that two scenarios are allowed. In the first
scenario, a CP conserving Higgs potential and the absence of flavour changing
neutral currents are obtained without fine-tuning. In the second scenario, the
photon becomes massive in the high scale vacua. We briefly discuss the
resulting phenomenology.


title: DIS at low x, phenomenological aspects

abstract:
  Saturation at low x appears as an almost unavoidable consequence of the
two-gluon exchange generic structure. Consistency of the ansatz for the vector
part of the color dipole cross section with conventional evolution determines
the energy dependence of the saturation scale.


title:
Is the BELLE result for the cross section e+e- -> J/psi+eta_c a real
  difficulty for QCD ?

abstract:
  It is shown that difficulties in reconciling the values of the cross section
e+e- -> J/psi+eta_c measured at BELLE and calculated within non-relativistic
QCD (NRQCD) are caused not by some misinterpretation of the data or other
exotic explanations, but by poor applicability of NRQCD to such processes.
  We use general theory of hard exclusive processes in QCD together with more
realistic models of charmonium wave functions, and show that the BELLE result
can be naturally explained.


title:
The QCD phase diagram: A comparison of lattice and hadron resonance gas
  model calculations

abstract:
  We compare the lattice results on QCD phase diagram for two and three flavors
with the hadron resonance gas model (HRGM) calculations. Lines of constant
energy density $\epsilon$ have been determined at different baryo-chemical
potentials $\mu_B$. For the strangeness chemical potentials $\mu_S$, we use two
models. In one model, we explicitly set $\mu_S=0$ for all temperatures and
baryo-chemical potentials. This assignment is used in lattice calculations. In
the other model, $\mu_S$ is calculated in dependence on $T$ and $\mu_B$
according to the condition of vanishing strangeness. We also derive an
analytical expression for the dependence of $T_c$ on $\mu_B/T$ by applying
Taylor expansion of $\epsilon$. In both cases, we compare HRGM results on
$T_c-\mu_B$ diagram with the lattice calculations. The agreement is excellent,
especially when the trigonometric function of $\epsilon$ is truncated up to the
same order as done in lattice simulations. For studying the efficiency of the
truncated Taylor expansion, we calculate the radius of convergence. For zero-
and second-order radii, the agreement with lattice is convincing. Furthermore,
we make predictions for QCD phase diagram for non-truncated expressions and
physical masses. These predictions are to be confirmed by heavy-ion experiments
and future lattice calculations with very small lattice spacing and physical
quark masses.


title: The Hierarchy Problem and an Exotic Bound State

abstract:
  The Multiple Point Principle, according to which there exist many vacuum
states with the same energy density, is put forward as a fine-tuning mechanism.
By assuming the existence of three degenerate vacua, we derive the hierarchical
ratio between the fundamental (Planck) and electroweak scales in the Standard
Model. In one of these phases, 6 top quarks and 6 anti-top quarks bind so
strongly by Higgs exchange as to become tachyonic and form a condensate. The
third degenerate vacuum is taken to have a Higgs field expectation value of the
order of the fundamental scale.


title:
Saturation effects in pp scattering in the impact-parameter
  representation

abstract:
  The impact of unitarity is considered in different approaches to saturation
in impact-parameter space. The energy and momentum-transfer dependence of the
total and differential cross sections and of the ratio of the real to imaginary
parts of the scattering amplitude are obtained in a model that includes soft
and hard pomeron contributions, coupled to hadrons via the electromagnetic form
factor. It is shown that the hard pomeron may significantly contribute to soft
physics at the LHC. A similar conclusion can also be reached in the framework
of non-linear approaches to unitarisation of the BFKL pomeron.


title: Higgsless Electroweak Symmetry Breaking

abstract:
  We discuss the possibility of breaking the electroweak symmetry in theories
with extra dimensions via boundary conditions, without a physical Higgs scalar
in the spectrum. In these models the unitarity violation scale can be delayed
via the exchange of massive KK gauge bosons. The correct W/Z mass ratio can be
enforced in a model in warped space with a left-right symmetric gauge group in
the bulk. Fermion masses can be similarly generated via boundary conditions. In
the perturbative regime the S parameter is too large in the simplest model,
however this can be alleviated in by changing the structure of the light
fermions slightly. The major remaining issue is the inclusion of a heavy top
quark without generating an unacceptably large shift in the Zbb coupling.


title:
The radiative decays $\phi\to\gamma a_0/f_0$ in the molecular model for
  the scalar mesons

abstract:
  We investigate the radiative decays of the $\phi$ meson to the scalar mesons
$a_0(980)$ and $f_0(980)$. We demonstrate that, contrary to earlier claims,
these decays should be of the same order of magnitude for a molecular state and
for a compact state and, therefore, the available experimental information is
consistent with both, a molecular as well as a compact structure of the
scalars. Thus, the radiative decays of the $\phi$ meson into scalars establish
a sizable $K\bar K$ component of the scalar mesons, but do not allow to
discriminate between molecules and compact states.


title: Impact of saturation on spin effects in proton-proton scattering

abstract:
  For pomerons described by a sum of two simple-pole terms, a soft and a hard
pomeron, the unitarity bounds from saturation in impact-parameter space are
examined. We consider the effect of these bounds on observables linked with
polarisation, such as the analyzing power in elastic proton-proton scattering,
for LHC energies. We obtain the s and t dependence of the Coulomb-nuclear
interference at small momentum transfer, and show that the effect of the hard
pomeron may be observed at the LHC.


title: Uncertainties of Sudakov form factors

abstract:
  We study the uncertainties of Sudakov form factors as the basis for parton
shower evolution in Monte Carlo event generators. We discuss the particular
cases of systematic uncertainties of parton distribution functions and scale
uncertainties.


title: Elliptic flow at RHIC: where and when does it formed?

abstract:
  Evolution of the elliptic flow of hadrons in heavy-ion collisions at RHIC
energies is studied within the microscopic quark-gluon string model. The
elliptic flow is shown to have a multi-component structure caused by (i)
rescattering and (ii) absorption processes in spatially asymmetric medium.
Together with different freeze-out dynamics of mesons and baryons, these
processes lead to the following trend in the flow formation: the later the
mesons are frozen, the weaker their elliptic flow, whereas baryon fraction
develops stronger elliptic flow during the late stages of the fireball
evolution. Comparison with the PHOBOS data demonstrates the model ability to
reproduce the v2(eta) signal in different centrality bins.


title:
EDM constraints and CP asymmetries of B processes in supersymmetric
  models

abstract:
  We demonstrate that electric dipole moments (EDMs) strongly constrain
possible SUSY contributions to the CP asymmetries of B processes; LL and/or RR
flavour mixings between second and third generations are severely restricted by
the experimental limit on the mercury EDM, and so therefore are their possible
contributions to the CP asymmetries of B --> \phi K and B --> \eta' K. We find
that SUSY models with dominant LR and RL mixing through non-universal A-terms
is the only way to accommodate the apparent deviation of CP asymmetries from
those expected in the Standard Model without conflicting with the EDM bounds or
with any other experimental results.


title:
The sensitivity of cosmic ray air shower experiments for excited lepton
  detection

abstract:
  In models with substructure in the fermionic sector, excited fermion states
are expected. Excited leptons could be produced in the interaction of high
energy quasi-horizontal cosmic neutrinos with the atmosphere via neutral and
charged current processes, $\nu N \to \nu^* X$ and $\nu N \to \ell^* X$. The
hadronic component X, and possibly part of the excited lepton decay products,
would originate an extensive air shower, observable in large cosmic ray
experiments. In this paper, the sensitivity of present and planned very high
energy cosmic ray experiments to excited lepton production is estimated and
discussed.


title: How Much do Heavy Quarks Thermalize in a Heavy Ion Collision?

abstract:
  We investigate the thermalization of charm quarks in high energy heavy ion
collisions. To this end, we calculate the diffusion coefficient in the
perturbative Quark Gluon Plasma and relate it to collisional energy loss and
momentum broadening. We then use these transport properties to formulate a
Langevin model for the evolution of the heavy quark spectrum in the hot medium.
The model is strictly valid in the non-relativistic limit and for all
velocities $\gamma v < \alphas^{-1/2}$ to leading logarithm in $T/m_D$. The
corresponding Fokker-Planck equation can be solved analytically for a Bjorken
expansion and the solution gives a simple estimate for the medium modifications
of the heavy quark spectrum as a function of the diffusion coefficient. Finally
we solve the Langevin equations numerically in a hydrodynamic simulation of the
heavy ion reaction. The results of this simulation are the medium modifications
of the charm spectrum $R_{AA}$ and the expected elliptic flow $v_2(p_T)$ as a
function of the diffusion coefficient.


title: How large could the R-parity violating couplings be?

abstract:
  We investigate in detail the predictions coming from the d=4 operators for
proton decay. We find the most general constraints for the R-parity violating
couplings coming from proton decay, taking into account all fermion mixing and
in different supersymmetric scenarios.


title: Higgs Masses in the Minimal SUSY SO(10) GUT

abstract:
  We explicitly show that minimal SUSY SO(10) Higgs-Higgsino mass matrices
evaluated by various groups are mutually consistent and correct. We comment on
the corresponding results of other authors. We construct one-to-one mappings of
our approach to the approaches of other authors.


title:
Third generation sfermions decays into Z and W gauge bosons: full
  one-loop analysis

abstract:
  The complete one-loop radiative corrections to third generation scalar
fermions into gauge bosons Z and W^\pm is considered. We focus on \wt{f}_2 \to
Z \wt{f}_1 and \wt{f}_i \to W^\pm \wt{f'}_j (f,f'=t,b). We include both
SUSY-QCD, QED and full electroweak corrections. It is found that the
electroweak corrections can be of the same order as the SUSY-QCD corrections.
The two sets of corrections interfere destructively in some region of parameter
space. The full one loop correction can reach 10% in some SUGRA scenario, while
in model independent analysis like general MSSM, the one loop correction can
reach 20% for large \tan\beta and large trilinear soft breaking terms A_b.


title: Strange Quark Mass from Tau Lepton Decays with O(alpha_s^3) Accuracy

abstract:
  The first complete calculation of the quadratic quark mass correction to the
correlator of the two currents relevant for the strangeness-changing
semihadronic tau-decay rate is presented including its real part at the
four-loop level. This allows to perform the extraction of the strange quark
mass m_s from the decay width of the tau-lepton with full O(alpha_s^3)
accuracy. In agreement with previous estimates the newly computed alpha_s^3
term proves to be rather large. This justifies inclusion of the similarly
estimated alpha_s^4 term in phenomenological analysis. Combined with an updated
value of V_{us} and an ``'improved'' version of the renormalization group
improvement of the perturbative series this leads to an increase of the central
value of m_s by about 20 % and a partial reduction of the theoretical
uncertainty by about 50 %.


title: Lorentz Violation in Supersymmetric Field Theories

abstract:
  Broken spacetime symmetries might emerge from a fundamental physical theory.
The effective low-energy theory might be expected to exhibit violations of
supersymmetry and Lorentz invariance. Some illustrative models which combine
supersymmetry and Lorentz violation are described, and a superspace formulation
is given.


title: Spacetime Symmetry Violation

abstract:
  Supersymmetric models with Lorentz violation can be formulated in superspace.
Two theories based on the Wess-Zumino model are discussed. A compactification
of superspace can be employed to understand the chiral superfield that arises
in the models.


title: Sivers effect in semi-inclusive DIS and in the Drell-Yan process

abstract:
  The Sivers parton distribution has been predicted to obey a particular
``universality relation'', namely to have opposite sign in semi-inclusive
deeply inelastic scattering (SIDIS) and the Drell-Yan process. We discuss how,
on the basis of present HERMES data, this remarkable prediction of the QCD
factorization approach to the description of single spin asymmetries related to
the Sivers effect could be checked experimentally in future experiments at PAX
and COMPASS.


title: Resonant Relaxation in Electroweak Baryogenesis

abstract:
  We compute the leading, chiral charge-changing relaxation term in the quantum
transport equations that govern electroweak baryogenesis using the closed time
path formulation of non-equilibrium quantum field theory. We show that the
relaxation transport coefficients may be resonantly enhanced under appropriate
conditions on electroweak model parameters and that such enhancements can
mitigate the impact of similar enhancements in the CP-violating source terms.
We also develop a power counting in the time and energy scales entering
electroweak baryogenesis and include effects through second order in ratios
$\epsilon$ of the small and large scales. We illustrate the implications of the
resonantly enhanced ${\cal O}(\epsilon^2)$ terms using the Minimal
Supersymmetric Standard Model, focusing on the interplay between the
requirements of baryogenesis and constraints obtained from collider studies,
precision electroweak data, and electric dipole moment searches.


title: Multi-mass-scale RG Improvement of the Coleman-Weinberg Model

abstract:
  We obtain the renormalization group improvement of the effective potential
for the Coleman-Weinberg model by resumming the leading logarithms which have
three different mass scales. Then, we investigate the effect of the multi-mass
scale on the prediction of the magnitude of the Higgs boson mass by considering
the two-loop effective potential.


title:
Heavy Supersymmetric Particle Effects in Higgs Boson Production
  Associated with a Bottom Quark Pair at LHC and Tevatron

abstract:
  If all the supersymmetry particles (sparticles) except a light Higgs boson
are too heavy to be directly produced at the Large Hadron Collider (LHC) and
Tevatron, a possible way to reveal evidence for supersymmetry is through their
virtual effects in other processes. We examine such supersymmetric QCD effects
in bottom pair production associated with a light Higgs boson at the LHC and
Tevatron. We find that if the relevant sparticles (gluinos and squarks) are
well above the TeV scale, too heavy to be directly produced, they can still
have sizable virtual effects in this process. For large $\tan\beta$, such
residual effects can alter the production rate by as much as 40 percent, which
should be observable in future measurements of this process.


title: Tilted plateau in nuclear collisions: data, models and MC-s

abstract:
  The linear dependence of the particle spectra on rapidity is seen in the
central region for asymmetric heavy ion collision in the data and in the Monte
Carlo results, similarly as in the fragmentation region for hadronic and ion
collisions. The origin of such a behaviour is discussed. It is shown that the
color string models produce naturally such a shape if string ends are randomly
distributed in rapidity.


title:
The centrality dependence of transverse energy and charged particle
  multiplicity at RHIC: Statistical model analysis

abstract:
  The transverse energy and charged particle multiplicity at midrapidity and
their ratio are evaluated in a statistical model with the longitudinal and
transverse flows for different centrality bins at RHIC at $\sqrt{s_{NN}}=130$
and 200 GeV. Full description of decays of hadron resonances is applied in
these estimations. The predictions of the model at the freeze-out parameters,
which were determined independently from measured particle yields and $p_{T}$
spectra, agree qualitatively well with the experimental data. The observed
overestimation of the ratio can be explained for more central collisions by the
redefinition of $dN_{ch}/d\eta|_{mid}$.


title: Running coupling constant and masses in QCD, the meson spectrum

abstract:
  In line with some previous works, we study in this paper the meson spectrum
in the framework of a second order quark-antiquark Bethe-Salpeter formalism
which includes confinement. An analytic one loop running coupling constant
alpha_s(Q), as proposed by Shirkov and Sovlovtsov, is used in the calculations.
As for the quark masses, the case of a purely phenomenological running mass for
the light quarks in terms of the c. m. momentum is further investigated.
Alternatively a more fundamental expression m_P(Q) is introduced for light and
strange quarks, combining renormalization group and analyticity requirements
with an approximate solution of the Dyson-Schwinger equation. The use of such
running coupling constant and masses turns out to be essential for a correct
reproduction of the the light pseudoscalar mesons.


title: The c-quark EDM and production of $h_c$ in $e^+e^-$ annihilation

abstract:
  We analyze the charm quark electric dipole moment (EDM) in the minimal
supersymmetric extension of the standard model (MSSM), including important
two-loop gluino contributions. Considering the experimental constraint on the
neutron EDM, the theoretical prediction for the charm quark EDM can reach about
$10^{-20}e\cdot cm$. If taking into account the mixing between the scharm and
stop quarks in the effective supersymmetry scenario, the charm quark EDM can be
enhanced to $\sim 10^{-19}e\cdot cm$. Direct production of the CP-odd $^1P_1$
state $h_c$ in $e^+e^-$ annihilation via the CP-violating process at the
BES-III and CLEO-C is analyzed.


title: Quark self-energy and relativistic flux tube model

abstract:
  The contribution of the quark self energy to the meson masses is studied in
the framework of the relativistic flux tube model. The equivalence between this
phenomenological model and the more QCD based rotating string Hamiltonian is
used as a guide to perform the calculations. It is shown that the addition of
the quark self energy to the relativistic flux tube model preserves the
linearity of the Regge trajectories. But, following the definition taken for
the constituent quark masses, the Regge slope is preserved or decreased. In
this last case, experimental data can only by reproduced by using a string
tension around 0.245 GeV$^2$. Two procedures are also studied to treat the pure
flux tube contribution as a perturbation of a spinless Salpeter Hamiltonian.


title: Small x evolution: BFKL vs Dipole Picture

abstract:
  The relation between the two approaches is discussed both in the linear and
nonlinear regimes. It is connected to the gauge invariance and Moebius symmetry
in LL perturbative QCD. First corrections beyond the large N approximation are
discussed for the nonlinear case.


title: Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N

abstract:
  The recent developments in the search of exotic pentaquark hadrons are
briefly reviewed. We then focus on investigating how the exotic pentaquark
$\Theta(1540)$ baryon production can be identified in the $\gamma N \to K
\bar{K} N$ reactions, focusing on the influence of the background (non-$\Theta$
production) mechanisms. By imposing the SU(3) symmetry and using various quark
model predictions, we are able to fix the coupling constants for evaluating the
kaon backgrounds, the $K\bar{K}$ production through the intermediate vector
meson and tensor meson photoproduction, and the mechanisms involving
intermediate $\Lambda(1116)$, $\Lambda(1405)$, $\Lambda(1520)$, $\Sigma
(1193)$, $\Sigma(1385)$, and $\Delta (1232)$ states. The total cross section
data of $\gamma p \to K^+K^- p$ is then used to fix the form factors which
regularize the background amplitudes so that the signal of $\Theta(1540)$ in
$\gamma n \to K^+K^-n$ and $\gamma p \to K^0\bar{K}^0p$ cross sections can be
predicted. We find that the predicted $K^+K^-$ and $K^+ n$ invariant mass
distributions of the $\gamma n \to K^+ K^- n$ reaction can qualitatively
reproduce the shapes of the JLab data. However, the predicted $\Theta(1540)$
peak can not be identified unambiguously with the data. High statistics
experiments are needed to resolve the problem. We also find that an even-parity
$\Theta$ is more likely to be detected, while it will be difficult to identify
an odd-parity $\Theta$, even if it exists, from the background continuum, if
its coupling constants are small as in the present quark model predictions.


title:
Polarization Anomaly in $B\to \phi K^{*}$ and Probe of Tensor
  Interactions

abstract:
  The pure penguin process $B\to \phi K^*$ is one of the most important probes
of physics beyond the Standard Model. Recently BaBar and Belle have measured
the unexpectedly large transverse polarization in the decays $B\to \phi K^*$,
which may single out new physics effects beyond the Standard model. We study
the possibility that the phenomenon could serve as an important probe of
anomalous tensor interactions. We find that a spin flipped tensor interaction
with a small strength and a phase could give a possible solution to the
polarization puzzle.


title:
Probing the light neutral Higgs boson scenario of the CP-violating MSSM
  Higgs sector at the LHC

abstract:
  In the CP-violating Minimal Supersymmetric Standard Model (MSSM), for certain
values of the CP-violating phases associated to the universal trilinear
couplings $(A_t, A_b)$ and the gluino mass $(M_{\tilde g})$, e.g.,
$\Phi_{\rm{CP}} = 60^\circ$ or $90^\circ$, for $M_{H^+} \lsim 140 $ GeV and
$\tan \beta \sim 2-5 $, the lightest Higgs boson mass ($M_{H_1}$) is $\lsim 50
$ GeV. This mass interval is still allowed from standard LEP Higgs searches
because of a strongly suppressed $H_1ZZ$ coupling. However, in the same region
of parameter space in which these two conditions occur, the $H_1 H^\mp W^\pm $
coupling is enhanced because the two mentioned sets of couplings satisfy a sum
rule. In this paper we probe such a light Higgs scenario at the Large Hadron
Collider (LHC) by studying $H^\pm H_1$ associate production, leading to a $4b +
\ell^\pm + \mET $ signal. We show that the latter is readily accessible at the
CERN hadron collider, upon the application of suitable selection cuts against
the Standard Model (SM) backgrounds. Our parton level Monte Carlo (MC) analysis
yields $\sim 15-45 $ signal events, completely free of SM background, for
${\cal L} = 10-30 {\rm fb}^{-1}$ of accumulated luminosity, after taking into
account the overall efficiency for tagging four $b$-jets.


title: The Baryon asymmetry in the Standard Model with a low cut-off

abstract:
  We study the generation of the baryon asymmetry in a variant of the standard
model, where the Higgs field is stabilized by a dimension-six interaction.
Analyzing the one-loop potential, we find a strong first order electroweak
phase transition for Higgs masses up to at least 170 GeV. Dimension-six
operators induce also new sources of CP violation. We compute the baryon
asymmetry in the WKB approximation. Novel source terms in the transport
equations enhance the generated baryon asymmetry. For a wide range of
parameters the model predicts a baryon asymmetry close to the observed value.


title: Transversity of quarks and nucleons in SIDIS and Drell Yan

abstract:
  We consider the leading and sub-leading twist $T$-odd and even contributions
to the $\cos 2\phi$ azimuthal asymmetry in unpolarized dilepton production in
Drell-Yan Scattering and semi-inclusive deep inelastic scattering of pions.


title:
Monte-Carlo simulation of events with Drell-Yan lepton pairs from
  antiproton-proton collisions

abstract:
  The complete knowledge of the nucleon spin structure at leading twist
requires also addressing the transverse spin distribution of quarks, or
transversity, which is yet unexplored because of its chiral-odd nature.
Transversity can be best extracted from single-spin asymmetries in fully
polarized Drell-Yan processes with antiprotons, where valence contributions are
involved anyway. Alternatively, in single-polarized Drell-Yan the transversity
happens convoluted with another chiral-odd function, which is likely to be
responsible for the well known (and yet unexplained) violation of the Lam-Tung
sum rule in the corresponding unpolarized cross section. We present Monte-Carlo
simulations for the unpolarized and single-polarized Drell-Yan $\bar{p}
p^{(\uparrow)} \to \mu^+ \mu^- X$ at different center-of-mass energies in both
configurations where the antiproton beam hits a fixed proton target or it
collides on another proton beam. The goal is to estimate the minimum number of
events needed to extract the above chiral-odd distributions from future
measurements at the HESR ring at GSI. It is important to study the feasibility
of such experiments at HESR in order to demonstrate that interesting spin
physics can be explored already using unpolarized antiprotons.


title:
The puzzle of the non-planar structure of the QCD contributions to the
  Gottfried sum rule

abstract:
  The recent finding, that in QCD at the $O(\alpha_s^2)$-level only non-planar
diagrams, which are suppressed by a factor $1/N_c^2$ relative to planar ones,
are contributing to the valence part of the Gottfried sum rule, is described.
To our knowledge, this intriguing unique feature did not manifest itself
previously in any perturbative expansion of any gauge quantum field model. We
hope that this discovery may have some theoretical explanation.


title: Towards an Understanding of the New Charm and Charm-Strange Mesons

abstract:
  The observation of the D_{sJ}^*(2317), D_{sJ}(2460), and SELEX D^*_{sJ}(2632)
states with properties differing considerably from what was expected has led to
a renewed interest in hadron spectroscopy. In addition to these states,
non-strange partners of the D_{sJ} states have also been observed.
Understanding the D_0^* and D_1' states can provide important insights into the
D_{sJ} states. In this contribution I examine quark model predictions for the
D_0^* and D_1' states and discuss experimental measurements that can shed light
on them. I find that these states are well described as the broad, j=1/2
non-strange charmed P-wave mesons. In the latter part of this writeup I discuss
the c bar{s} possibilities for the SELEX D^*_{sJ}(2632) and measurements that
can shed light on it.


title: Neutrino Properties from High Energy Astrophysical Neutrinos

abstract:
  It is shown that high energy neutrino beams from very distant sources can
beutilized to learn about some properties fof neutrinos such as lifetimes and
mass hierarchy etc. Furthermore, even mixing elements such as U-e3 and the CPV
phase can be measured in principle. Pseudo-Dirac mass differences as small as
10^-18 eV^2 can be probed as well.


title:
Three-Loop Radiative-Recoil Corrections to Hyperfine Splitting in
  Muonium

abstract:
  We consider three-loop radiative-recoil corrections to hyperfine splitting in
muonium. These corrections are enhanced by the large logarithm of the
electron-muon mass ratio. The leading logarithm cubed and logarithm squared
contributions were obtained a long time ago. We calculate the
single-logarithmic and nonlogarithmic contributions of order $\alpha^3(m/M)E_F$
generated by gauge invariant sets of diagrams with one- and two-loop
polarization insertions in diagrams with two exchanged photons and radiative
photons, and by diagrams with one-loop radiative photon insertions both in the
electron and muon lines. The results of this paper constitute a next step in
the implementation of the program of reduction of the theoretical uncertainty
of hyperfine splitting below 10 Hz. They improve the theory of hyperfine
splitting, and affect the value of the electron-muon mass ratio extracted from
experimental data on the muonium hyperfine splitting.


title: Axion and Right-handed Neutrino in the Minimal SUSY SO(10) Model

abstract:
  The connection between the axion and right-handed neutrinos is explored in
the framework of the minimal SUSY SO(10) model. The former is related to the
Peccei-Quinn (PQ) solution to the strong CP problem and the latter is to the
light Majorana neutrinos through the see-saw mechanism. In this model, a
relative phase between $({\bf 10,1,3}) (\equiv {\bf \bar{\Delta}}_R) \subset
{\bf \bar{126}}$ and $({\bf \bar{10},1,3}) (\equiv {\bf \Delta}_R) \subset {\bf
126}$ multiplets of ${\rm SU}(4) \times {\rm SU}(2)_L \times {\rm SU}(2)_R
\subset {\rm SO}(10)$ becomes a physical degree of freedom identified with the
axion. Then, the PQ symmetry breaking scale ($\Lambda_{\rm PQ}$) and the $B-L$
symmetry breaking scale ($\Lambda_{\rm B-L}$) coincide through the VEV of ${\bf
\bar{\Delta}}_R$. The scalar partner of the lightest right-handed neutrino is
regarded as the inflaton, which gives a consistent density fluctuation for the
CMB.


title: Berry Phase in Neutrino Oscillations

abstract:
  We study the Berry phase in neutrino oscillations for both Dirac and Majorana
neutrinos. In order to have a Berry phase, the neutrino oscillations must occur
in a varying medium, the neutrino-background interactions must depend on at
least two independent densities, and also there must be CP violation if the
neutrino interactions with matter are mediated only by the standard model W and
Z boson exchanges which implies that there must be at least three generations
of neutrinos. The CP violating Majorana phases do not play a role in generating
a Berry phase. We show that a natural way to satisfy the conditions for the
generation of a Berry phase is to have sterile neutrinos with active-sterile
neutrino mixing, in which case at least two active and one sterile neutrinos
are required. If there are additional new CP violating flavor changing
interactions, it is also possible to have a non-zero Berry phase with just two
generations.


title: On the Weak Decay of Composite System based on Majorana Partners

abstract:
  In a composite model of leptons and quarks, composite particles with heavy
Majorana particles appear provided that the V-rishon is regarded as a Majorana
particle. In this paper, the decay mode of such "Majorana partners" is
isestigated. It is shown that the life time of Majorana partners are fairly
long. Our model suggests that a new mechanism of proton decay is possible,
where the X and Y bosons in GUTs are not necessary.


title: Interactions of cosmic neutrinos with nucleons in the RS model

abstract:
  We consider the scattering of the brane fields due to t-channel massive
graviton exchanges in the Randall-Sundrum model. The eikonal amplitude is
analytically calculated and both differential and total neutrino-nucleon cross
sections are estimated. The event rate of quasi-horizontal air showers induced
by cosmic neutrinos, which can be detected at the Pierre Auger Observatory, is
presented for two different fluxes of cosmogenic neutrinos.


title: Charged lepton-nucleus inelastic scattering at high energies

abstract:
  The composite model is constructed to describe inelastic high-energy
scattering of muons and taus in standard rock. It involves photonuclear
interactions at low $Q^2$ as well as moderate $Q^2$ processes and the deep
inelastic scattering (DIS). In the DIS region the neutral current contribution
is taken into consideration. Approximation formulas both for the muons and tau
energy loss in standard rock are presented for wide energy range.


title: The $[56,4^+]$ baryon multiplet in the $1/N_c$ expansion of QCD

abstract:
  We use the $1/N_c$ expansion of QCD to analyze the spectrum of positive
parity resonances with strangeness $S = 0, -1, -2$ and -3 in the 2--3 GeV mass
region, supposed to belong to the $[\textbf{56},4^+]$ multiplet. The mass
operator is similar to that of $[\textbf{56},2^+]$, previously studied in the
literature. The analysis of the latter is revisited. In the $[\textbf{56},4^+]$
multiplet we find that the spin-spin term brings the dominant contribution and
that the spin-orbit term is entirely negligible in the hyperfine interaction,
in agreement with constituent quark model results. More data are strongly
desirable, especially in the strange sector in order to fully exploit the power
of this approach.}


title: Seesaw Mechanism and Its Implications

abstract:
  The seesaw mechanism for neutrino masses is introduced and some of its
different realizations and applications are discussed. It is pointed out how
they can be used to understand the bi-large mixing patterns among neutrinos in
combination with assumptions about high scale physics such as grand unification
or quasi-degeneracy of neutrino masses.


title: Stringification of Chiral Dynamics: Wess-Zumino interaction

abstract:
  The QCD hadronic string is supplemented with the reparameterization-invariant
boundary interaction to background chiral fields associated with pions in a way
compatible with the conformal symmetry. It allows the full reconstruction of
the P-even part of the Chiral Lagrangian in a good agreement with the
phenomenology of P-even meson interactions. The modification of boundary
interaction necessary to induce the parity-odd Chiral Dynamics (WZW action) is
outlined.


title:
Color-evaporation-model calculation of e^+ e^- -> J/psi+cc-bar+X at
  root-s=10.6 GeV

abstract:
  Measurements by the Belle Collaboration of the cross section for inclusive
J/psi production in e^+e^- annihilation have been a serious challenge to
current heavy-quarkonium theory. Especially, the measured cross sections for
exclusive J/psi+eta_c and inclusive J/psi+cc-bar+X differ from nonrelativistic
QCD predictions by an order of magnitude. In order to check if other available
alternative theory can resolve such a large discrepancy, we calculate the cross
section for inclusive J/psi+cc-bar+X based on the color-evaporation model. As a
phenomenological model, the color-evaporation model is still employed to
predict cross sections for inclusive quarkonium production in various
processes. Our results show that the color-evaporation-model prediction is even
smaller than the nonrelativistic QCD prediction by an order of magnitude. The
resultant color-evaporation-model prediction for J/psi+cc-bar+X fraction in the
inclusive J/psi production cross section is 0.049, while the empirical value
measured by the Belle Collaboration is 0.82.


title:
How do chiral condensates affect color superconducting quark matter
  under charge neutrality constraints?

abstract:
  We investigate the effects of the dynamical formation of the chiral
condensates on color superconducting phases under the electric and color
neutrality constraints at vanishing temperature. We shall show that the phase
appearing next to the color-flavor-locked (CFL) phase down in density depends
on the strength of the diquark coupling. In particular, the gapless CFL (gCFL)
phase is realized only in a weak coupling regime. We give a qualitative
argument on why the gCFL phase in the weak coupling region is replaced by some
other phases in the strong coupling, once the competition between dynamical
chiral symmetry breaking and the Cooper pair formation is taken into account.


title:
A semi-analytic calculation on the atmospheric tau neutrino flux in the
  GeV to TeV energy range

abstract:
  We present a semi-analytic calculation on the atmospheric tau neutrino flux
in the GeV to TeV energy range. The atmospheric $\nu_{\tau}$ flux is calculated
for the entire zenith angle range. This flux is contributed by the oscillations
of muon neutrinos coming from the two-body $\pi, K$ decays and the three-body
$\mu^{\pm}$ decays, and the intrinsic tau neutrino flux surviving the
oscillations. The uncertainties in our calculations are discussed in detail.
The implications of our result are also discussed.


title:
Polarized forward-backward asymmetries of leptons in (B_s -> l^+ l^-
  gamma) decay

abstract:
  Polarized forward-backward asymmetries in the (B_s -> l^+ l^- gamma) decay
are calculated using the most general, model independent form of the effective
Hamiltonian, including all possible forms of interactions. The dependencies of
the asymmetries on new Wilson coefficients are investigated. The detectability
of the asymmetries at LHC is discussed.


title:
Testing Lorentz invariance by use of vacuum and matter filled cavity
  resonators

abstract:
  We consider tests of Lorentz invariance for the photon and fermion sector
that use vacuum and matter-filled cavities. Assumptions on the wave-function of
the electrons in crystals are eliminated from the underlying theory and
accurate sensitivity coefficients (including some exceptionally large ones) are
calculated for various materials. We derive the Lorentz-violating shift in the
index of refraction n, which leads to additional sensitivity for matter-filled
cavities ; and to birefringence in initially isotropic media. Using published
experimental data, we obtain improved bounds on Lorentz violation for photons
and electrons at levels of 10^-15 and below. We discuss implications for future
experiments and propose a new Michelson-Morley type experiment based on
birefringence in matter.


title: Non-forward BFKL Pomeron at next-to-leading order

abstract:
  The kernel of the BFKL equation for non-zero momentum transfer is found at
next-to-leading order. It is presented in various forms depending on the
regularization of the infrared singularities in "virtual" and "real" parts of
the kernel. The infrared safety of the total kernel is demonstrated and a form
free from the singularities is suggested.


title: Isolated Photon Production in Deep Inelastic Compton Process at HERA

abstract:
  The next-to-leading QCD calculation for the isolated photon and isolated
photon plus jet photoproduction at the ep collider DESY HERA is presented. The
theoretical uncertainties are discussed in details. The predictions are
compared with predictions of other authors and with data. The sensitivity of
the leading order cross section to the gluon density in both the real and the
virtual photon is discussed as well.


title: B => D(*) transitions in a quark model

abstract:
  We propose a constituent quark model to evaluate heavy decay constants and
form factors relevant for B=>D(*) semileptonic transitions. We show that the
model reproduces the scaling laws dictated by the spin-flavour symmetry in the
heavy quark limit and describes quite well the experimental data.


title:
Generalized Parton Distributions: A New Avenue to Color Transparency
  Phenomena

abstract:
  Color Transparency studies have been since long suggested as a means to study
the occurrence and relevance of small size hadronic configurations, predicted
within QCD to dominate exclusive scattering processes, by monitoring the
passage of hadrons through the nuclear medium at large four momentum transfer,
$Q^2$. The validation through experiments of this picture -- the dominance of
short separation components -- is however not straightforward. This situation
motivated us to explore a description of Color Transparency in terms of
Generalized Parton Distributions (GPDs) using a recent interpretation in impact
parameter representation.


title:
A Perturbative QCD Based Study of Polarized Nucleon Structure in the
  Transition Region and Beyond: "Quarks, Color Neutral Clusters, and Hadrons"

abstract:
  A large fraction of the world data on both polarized and unpolarized
inclusive $ep$ scattering at large Bjorken $x$ lies in the resonance region
where a correspondence with the deep inelastic regime, known as Bloom and
Gilman's duality, was observed. Recent analyses of the $Q^2$ dependence of the
data show that parton-hadron duality is inconsistent with the twist expansion
at low values of the final state invariant mass. We investigate the nature of
this disagreement, and we interpret its occurrence in terms of contributions
from non partonic degrees of freedom in a preconfinement model.


title: The MSW effect and Matter Effects in Neutrino Oscillations

abstract:
  The MSW (Mikheyev-Smirnov-Wolfenstein) effect is the adiabatic or partially
adiabatic neutrino flavor conversion in medium with varying density. The main
notions related to the effect, its dynamics and physical picture are reviewed.
The large mixing MSW effect is realized inside the Sun providing the solution
of the solar neutrino problem. The small mixing MSW effect driven by the 1-3
mixing can be realized for the supernova (SN) neutrinos. Inside the collapsing
stars new elements of the MSW dynamics may show up: the non-oscillatory
transition, non-adiabatic conversion, time dependent adiabaticity violation
induced by shock waves. Effects of the resonance enhancement and the parametric
enhancement of oscillations can be realized for the atmospheric and accelerator
neutrinos in the Earth. Precise results for neutrino oscillations in the low
density medium with arbitrary density profile are presented and the attenuation
effect is described. The area of applications is the solar and SN neutrinos
inside the Earth, and the results are crucial for the neutrino oscillation
tomography.


title: Weinberg-Salam model at finite temperature and density

abstract:
  We present a new gauge fixing condition for the Weinberg-Salam electro-weak
theory at finite temperature and density.
  After spontaneous symmetry breaking occurs, every unphysical term in the
Lagrangian is eliminated with our gauge fixing condition. A new and simple
Lagrangian can be obtained where we can identify the propagators and vertices.
Some consequences are discussed, as the new gauge dependent masses of the gauge
fields and the new Faddeev-Popov Lagrangian. After obtaining the quadratic
terms, we calculate exactly the 1-loop effective potential identifying the
contribution of every particular field.


title: Kaonic atoms in QCD

abstract:
  In this talk, I comment on the theoretical and experimental status of kaonic
atoms, in particular, \bar K\pi and \bar Kp bound states.


title:
Color deconfinement and subhadronic matter: phase states and the role of
  constituent quarks

abstract:
  Major aspects of the subhadronic state of nuclear matter populated with
deconfined color particles are reviewed. At high and even at rather low nuclear
collision energies, this is expected to be a short-term quark-gluon plasma
(QGP), but, seemingly, not only this. Emphasis is put on the self-consistency
requirement that must be imposed on any phenomenological description of the
evolution of a hot and dense nuclear medium as it expands (cools down) to the
point where the final scattering of secondary particles starts. The view is
argued and analyzed that massive constituent quarks should then play a major
role at a certain cooling stage. A hypothesis is discussed regarding the
existence of an intermediate stage (a valon plasma), allowing a consistent
explanation of data on the mid-rapidity yields of various kinds of hadrons and
direct dileptons (e+e- -pairs) in high-energy heavy-ion collisions.


title:
On a $Z^{\prime}$ signature at next high energy electron-positron
  colliders

abstract:
  The associated production of a $Z^{\prime}$ and a final hard photon in high
energy electron-positron colliders is studied. It is shown that the hard photon
spectrum contains useful information on the $Z^{\prime}$ properties. This
remark suggests that, if a new neutral gauge boson exists for $M_{Z^{\prime}} <
\sqrt{s}$, it will not be necessary to make a new energy run at the
$Z^{\prime}$ mass in order to get most of its properties.


title:
The Color Glass Condensate: A summary of key ideas and recent
  developments

abstract:
  We summarize the theory and phenomenology of the Color Glass Condensate
reviewed previously by E. Iancu and the author in hep-ph/0303204. In addition,
we discuss some of the subsequent developments in the past year both in theory
and in phenomenological applications.


title: Frozen rigging model of the energy dominated universe

abstract:
  Composite rigging systems, involving membranes that meet on strings that meet
on monopoles, arise naturally by the Kibble mechanism as topological defects in
field theories involving spontaneous symmetry breaking. Such systems will tend
to freeze out into static lattice type configurations with energy contribution
ultimately be provided by the membranes. It has been suggested by Bucher and
Spergel that on scales large compared with the relevant (interstellar
separation) distance characterising the relevant mesh length, such a system may
behave as a rigidity - stabilised solid, having an approximately isotropic
stress energy tensor with negative pressure, as given by a polytropic index
$\gamma=w+1=1/3$. It has recently been shown that such a system can be rigid
enough to be stable if the number of membranes meeting at a junction is even
(though not if it is odd). Using as examples an approximately O(3) symmetric
scalar field model that can provide an ``8 color'' (body centered) cubic
lattice, and an approximate U(1)$\times$ U(1) model offering a disordered ``5
color'' lattice, it is argued that such a mechanism can account naturally for
the observed dark energy dominance of the universe, without ad hoc assumptions,
other than that the relevant symmetry breaking phase transition should have
occurred somewhere about the Kev energy range.


title: Dimension-5 operators in a Gauge Mediated Supersymmetry Breaking Model

abstract:
  We study the novel features in a model with Gauge Mediated Supersymmetry
Breaking. If the messenger fields have positive R-parity, there will be new
sources of flavor violations. We show that the dimension-5 operators will be
quite important. When dressing these operators by wino-loops, the constraints
on them by the present data are given.


title: Triple-pomeron dynamics: valence vs. glue

abstract:
  Three pomerons are known to couple via the gluon loop and interactions of
this kind which are responsible for high-mass diffraction are described in
terms of the gluonic structure function of the QCD pomeron. We show that the
triple-pomeron coupling via the light quark loop associated with the
``valence'' in the pomeron is of the same strength as the purely gluonic
coupling. The large $Q^2$ behavior of this new contribution is described by the
DLLA evolution from the non-perturbative $f\bar f$ valence state of the
pomeron. Numerical estimates of the high-mass diffraction structure functions
based on the consistent account of both couplings are in good agreement with
experimental data.


title: Exclusive radiative and electroweak b->d and b->s penguin decays at NLO

abstract:
  We provide Standard Model expectations for the rare radiative decays B->K^*
gamma, B->rho gamma and B-> omega gamma, and the electroweak penguin decays
B->K^* l^+ l^- and B->rho l^+ l^- at the next-to-leading order (NLO), extending
our previous results to b->d transitions. We consider branching fractions,
isospin asymmetries and direct CP asymmetries. For the electroweak penguin
decays, the lepton-invariant mass spectrum and forward-backward asymmetry is
also included. Radiative and electroweak penguin transitions in b->d are mainly
interesting in the search for new flavour-changing neutral current
interactions, but in addition the B->rho gamma decays provide constraints on
the CKM parameters (\bar\rho,\bar\eta). The potential impact of these
constraints is discussed.


title: Leptonic CP violation in a two parameter model

abstract:
  We further study the "complementary" Ansatz, Tr$(M_\nu)$=0, for a prediagonal
light Majorana type neutrino mass matrix. Previously, this was studied for the
CP conserving case and the case where the two Majorana type CP violating phases
were present but the Dirac type CP violating phase was neglected. Here we
employ a simple geometric algorithm which enables us to "solve" the Ansatz
including all three CP violating phases. Specifically, given the known neutrino
oscillation data and an assumed two parameter (the third neutrino mass $m_3$
and the Dirac CP phase $\delta$) family of inputs we predict the neutrino
masses and Majorana CP phases. Despite the two parameter ambiguity, interesting
statements emerge.
  There is a characteristic pattern of interconnected masses and CP phases. For
large $m_3$ the three neutrinos are approximately degenerate. The only
possibility for a mass hierarchy is to have $m_3$ smaller than the other two. A
hierarchy with $m_3$ largest is not allowed.
  Small CP violation is possible only near two special values of $m_3$. Also,
the neutrinoless double beta decay parameter is approximately bounded as 0.020
eV $<|m_{ee}|<$ 0.185 eV. As a byproduct of looking at physical amplitudes we
discuss an alternative parameterization of the lepton mixing matrix which
results in simpler formulas. The physical meaning of this parameterization is
explained.


title:
Energy Loss of Charm Quarks in the Quark-Gluon Plasma: Collisional vs
  Radiative

abstract:
  Considering the collisional energy loss rates of heavy quarks from hard light
parton interactions the total energy loss of a charm quark for a static medium
has been computed. For the energy range $E\sim (5-10)$ GeV of charm quark, it
is found to be almost same order as that of radiative ones estimated to a first
order opacity expansion. The collisional energy loss will become much more
important for lower energy charm quarks and this feature could be very
interesting for phenomenology of hadrons spectra. Using such collisional energy
loss rates we estimate the momentum loss distribution employing a Fokker-Planck
equation and the total energy loss of a charm quark for an expanding
quark-gluon plasma under conditions resembling the RHIC energies. The
fractional collisional energy loss is found to be suppressed by a factor of 5
as compared to static case and does not depend linearly on the system size. We
also investigate the heavy to light hadrons $D/\pi$ ratio at moderately large
(5-10) GeV/$c$ transverse momenta and comment on its enhancement.


title:
Non-Perturbative Effect on Dark Matter Annihilation and Gamma Ray
  Signature from Galactic Center

abstract:
  Detection of gamma rays from dark matter annihilation in the galactic center
is one of the feasible techniques to search for dark matter. We evaluate the
gamma ray flux in the case that the dark matter has an electroweak SU(2)_L
charge. Such dark matter is realized in the minimal supersymmetric standard
model (MSSM) when the lightest SUSY particle is the Higgsino- or Wino-like
neutralino. When the dark matter is heavy compared to the weak gauge bosons,
the leading-order calculation of the annihilation cross sections in
perturbation breaks down due to a threshold singularity. We take into account
non-perturbative effects by using the non-relativistic effective theory for the
two-body states of the dark matter and its SU(2)_L partner(s), and evaluate
precise cross sections relevant to the gamma ray fluxes. We find that the
annihilation cross sections may be enhanced by several orders of magnitude due
to resonances when the dark matter mass is larger than 1 TeV. Furthermore, the
annihilation cross sections in the MSSM may be changed by factors even when the
mass is about 500 GeV. We also discuss sensitivities to gamma ray signals from
the galactic center in the GLAST satellite detector and the large Air Cerenkov
Telescope arrays.


title: Parameter degeneracies and new plots in neutrino oscillations

abstract:
  It is shown that plots of constant probabilities in the $(\sin^22\theta_{13},
1/s^2_{23})$ plane enable us to see eightfold degeneracy easily. Using this
plot, I discuss how an additional long baseline measurement resolves
degeneracies after the JPARC experiment measures the oscillation probabilities
$P(\nu_\mu\to\nu_e)$ and $P(\bar{\nu}_\mu\to\bar{\nu}_e)$ at $|\Delta
m^2_{31}|L/4E=\pi/2$.


title: Degeneracy and strategies of long baseline and reactor experiments

abstract:
  Assuming that the JPARC experiment measures the oscillation probabilities
$P(\nu_\mu\to\nu_e)$ and $P(\bar{\nu}_\mu\to\bar{\nu}_e)$ at $|\Delta
m^2_{31}|L/4E=\pi/2$, I discuss what kind of extra experiment (long baseline or
reactor) can contribute to determination of $\theta_{13}$ and the CP phase
$\delta$.


title: Lorentz Violation and Gravity

abstract:
  This talk outlines some results for gravitational theories with local Lorentz
violation in the context of the Lorentz- and CPT-violating Standard-Model
Extension.


title:
Finite-Size Effects and Scaling for the Thermal QCD Deconfinement Phase
  Transition within the Exact Color-Singlet Partition Function

abstract:
  We study the finite-size effects for the thermal QCD Deconfinement Phase
Transition (DPT), and use a numerical finite size scaling analysis to extract
the scaling exponents characterizing its scaling behavior when approaching the
thermodynamic limit. For this, we use a simple model of coexistence of hadronic
gas and color-singlet Quark Gluon Plasma (QGP) phases in a finite volume. The
Color-Singlet Partition Function (CSPF) of the QGP cannot be exactly calculated
and is usually derived within the saddle point approximation. When we try to do
calculations with such an approximate CSPF, a problem arises in the limit of
small temperatures and/or volumes (VT3<<1), requiring then additional
approximations if we want to carry out calculations. We propose in this work a
new method for an accurate calculation of any quantity of the finite system,
without explicitly calculating the CSPF itself and without any approximation.
By probing the behavior of some useful thermodynamic response functions on the
hole range of temperature, it turns out that in a finite size system, all
singularities in the thermodynamic limit are smeared out and the transition
point is shifted away. A numerical finite size scaling analysis of the obtained
data allows us to determine the scaling exponents of the QCD DPT. Our results
expressing the equality between their values and the space dimensionality is a
consequence of the singularity characterizing a first order phase transition
and agree very well with the predictions of other FSS theoretical approaches
and with the results of both lattice QCD and Monte Carlo models calculations.


title: Neutrino quantum states and spin light in matter

abstract:
  On the basis of the exact solutions of the modified Dirac equation for a
massive neutrino moving in matter we develop the quantum theory of the spin
light of neutrino ($SL\nu$). The expression for the emitted photon energy is
derived as a function of the density of matter for different matter
compositions. The dependence of the photon energy on the helicities of the
initial and final neutrino states is shown explicitly. The rate and radiation
power of the $SL\nu$ in matter are obtained with the emitted photon linear and
circular polarizations being accounted for. The developed quantum approach to
the $SL\nu$ in matter (which is similar to the Furry representation of
electrodynamics) can be used in the studies of other processes with neutrinos
in the presence of matter


title: Generalized parton distributions for dynamical equation models

abstract:
  We show how generalized parton distributions (GPDs) can be determined in the
case where hadrons are described in terms of their partonic degrees of freedom
through solutions of dynamical equations. We demonstrate our approach on the
example of two-quark bound states described by the Bethe-Salpeter equation, and
three-quark bound states described by three- and four-dimensional Faddeev-like
equations. Within the model of strong interactions defined by the dynamical
equations, all possible mechanisms contributing to the GPDs are taken into
account, and all GPD sum rules are satisfied automatically. The formulation is
general and can be applied to determine generalized quark distributions,
generalized gluon distributions, transition GPDs, nucleon distributions in
nuclei, etc. Our approach is based on the gauging of equations method.


title: Towards Complete Neutrino Mixing Matrix and CP-Violation

abstract:
  The compelling experimental evidences for oscillations of solar, atmospheric
and reactor neutrinos imply the existence of 3-neutrino mixing in vacuum. We
review the phenomenology of 3-neutrino mixing, and the current data on the
3-neutrino mixing parameters. The opened questions and the main goals of future
research in the field of neutrino mixing and oscillations are outlined. A
phenomenological approach for understanding the pattern of neutrino mixing as
an interplay between the mixing, arising from the charged lepton sector, and
bimaximal mixing, arising from a neutrino Majorana mass matrix, is considered
with emphasis on the CP-violating case. We comment also on planned future steps
in the experimental studies of neutrino mixing.


title:
Tagging Sneutrino Resonances at a Linear Collider with Associated
  Photons

abstract:
  Sneutrino resonances at a high energy linear e+e- collider may be one of the
clearest signals of supersymmetry without R-parity, especially when the
R-parity-violating coupling is too small to produce observable excesses in
four-fermion processes. However, there is no guarantee that the sneutrino pole
will lie anywhere near the machine energy. We show that associated photon
production induces the necessary energy spread, and that the resonance then
leaves a clear imprint in the photon spectrum. It follows that tagging of a
hard mono-energetic photon for a variety of possible final states provides a
realistic method of separating sneutrino resonance signals from the Standard
Model backgrounds.


title: Neutrino cross sections at HERA and beyond

abstract:
  The ultrahigh energy neutrino cross section is reviewed. Experimental results
from HERA electron-proton and positron-proton scattering have yielded new
information about the small x behavior of the parton distribution functions. We
compare pre-HERA era neutrino-nucleon cross sections with more recent
evaluations.


title: Deep inelastic neutrino interactions

abstract:
  Next-to-leading order QCD corrections, order 1 GeV mass corrections and the
role of a strangeness asymmetry and isospin violation in the x dependence of
the parton distribution functions are evaluated in the context of the
neutrino-nucleon cross section. Their contributions to evaluations of the weak
mixing angle using the Paschos-Wolfenstein relation are discussed.


title: CKM Sides: Theory

abstract:
  We review the theory of the determination of the CKM elements Vcb and Vub.
Particular attention is paid to the determination of Vcb through inclusive
semileptonic B decays to charm using a moment analysis, since this has shown
most progress recently. A precise method for the determination of Vub via
exclusive decays is described.


title: Conference Summary

abstract: Conference Summary at FPCP04


title: Heavy Meson Physics: What have we learned in Twenty Years?

abstract:
  I give a personal account of the development of the field of heavy quarks.
After reviewing the experimental discovery of charm and bottom quarks, I
describe how the field's focus shifted towards determination of CKM elements
and how this has matured into a precision science.


title:
Consistent Analysis of the $B\to\pi$ Transition Form Factor in the Whole
  Physical Region

abstract:
  In the paper, we show that the $B\to\pi$ transition form factor can be
calculated by using the different approach in the different $q^2$ regions and
they are consistent with each other in the whole physical region. For the
$B\to\pi$ transition form factor in the large recoil regions, one can apply the
PQCD approach, where the transverse momentum dependence for both the hard
scattering part and the non-perturbative wavefunction, the Sudakov effects and
the threshold effects are included to regulate the endpoint singularity and to
derive a more reliable PQCD result. Pionic twist-3 contributions are carefully
studied with a better endpoint behavior wavefunction for $\Psi_p$ and we find
that its contribution is less than the leading twist contribution. Both the two
wavefunctions $\Psi_B$ and $\bar\Psi_B$ of the B meson can give sizable
contributions to the $B\to\pi$ transition form factor and should be kept for a
better understanding of the B decays. The present obtained PQCD results can
match with both the QCD light-cone sum rule results and the extrapolated
lattice QCD results in the large recoil regions.


title:
Strong phase shifts and color-suppressed tree amplitudes in B -> D K^(*)
  and B -> D pi, D rho decays

abstract:
  We analyze the decay processes B \to DK, DK^*, D\pi, and D\rho in a
model-independent way. Using the quark diagram approach, we determine the
magnitudes of the relevant amplitudes and the relative strong phase shifts. In
order to find the most likely values of the magnitudes and the relative strong
phases of the amplitudes in a statistically reliable way, we use the \chi^2
minimization technique. We find that the strong phase difference between the
color-allowed and the color-suppressed tree amplitude can be large and is
non-zero at 1 \sigma level with the present data. The color-suppressed tree
contributions are found to be sizably enhanced. We also examine the validity of
factorization and estimate the breaking effects of flavor SU(3) symmetry in B
\to DK, D\pi and in B \to DK^*, D\rho.


title: Standard Model and Beyond

abstract:
  We first discuss the basic features of electroweak 1-loop corrections in the
Standard Model. We also give a short and elementary review on Higgs boson
searches, grand unification, supersymmetry and extra dimensions.


title:
Transversity distribution in spin asymmetries in semi-inclusive DIS and
  in the Drell-Yan process

abstract:
  A review is given on single spin asymmetries in deep inelastic semi-inclusive
scattering (SIDIS) and their possible theoretical understanding in the
framework of QCD-induced factorization approach, wherefore predictions for
transversity from the chiral quark soliton model are used. Arising difficulties
to interpret most recent SIDIS data, and the possibility to access the
transversity distribution in the Drell-Yan process are discussed.


title: Electromagnetic N->Delta transition and neutron form factors

abstract:
  The C2/M1 ratio of the electromagnetic N->Delta(1232) transition, which is
important for determining the geometric shape of the nucleon, is shown to be
related to the neutron elastic form factor ratio G_C^n/G_M^n. The proposed
relation holds with good accuracy for the entire range of momentum transfers
where data are available.


title: Charged Higgs production via bg -> tH- at the LHC

abstract:
  I present a calculation of QCD radiative corrections to charged Higgs
production via the process bg -> tH-. I show that the cross section is
dominated by soft-gluon corrections, which are computed through
next-to-next-to-leading order. Results for charged Higgs production at the LHC
are presented, including the dependence of the cross section on the charged
Higgs mass, the top quark mass, the factorization and renormalization scales,
and tan beta.


title:
Topological Field Configurations in the Presence of Isospin Chemical
  Potential

abstract:
  We analyze the stability of different topological solutions in Quantum Field
Theory when an isospin chemical potential $\mu $ is included. We work in the
limit when temperature vanishes. We find that static vortex solutions in $2+1D$
do exist. However, the 't Hooft-Polyakov monopole in $3+1D$ is no longer
stable, as soon as the chemical potential acquires a finite value. In the case
of the Skyrmion, this topological solution still exists for finite $\mu$, up to
a certain critical value.


title:
Virtual effects of light gauginos and higgsinos: a precision electroweak
  analysis of split supersymmetry

abstract:
  We compute corrections to precision electroweak observables in supersymmetry
in the limit that scalar superpartners are very massive and decoupled. This
leaves charginos and neutralinos and a Standard Model-like Higgs boson as the
only states with unknown mass substantially affecting the analysis. We give
complete formulas for the chargino and neutralino contributions, derive simple
analytic results for the pure gaugino and higgsino cases, and study the general
case. We find that in all circumstances, the precision electroweak fit improves
when the charginos and neutralinos are near the current direct limits. Larger
higgsino and gaugino masses worsen the fit as the theory predictions
asymptotically approach those of the Standard Model. Since the Standard Model
is considered by most to be an adequate fit to the precision electroweak data,
an important corollary to our analysis is that all regions of parameter space
allowed by direct collider constraints are also allowed by precision
electroweak constraints in split supersymmetry.


title: Global Study of Nuclear Structure Functions

abstract:
  We present the results of a phenomenological study of unpolarized nuclear
structure functions for a wide kinematical region of x and Q^2. As a basis of
our phenomenology we develop a model which takes into account a number of
different nuclear effects including nuclear shadowing, Fermi motion and
binding, nuclear pion excess and off-shell correction to bound nucleon
structure functions. Within this approach we perform a statistical analysis of
available data on the ratio of the nuclear structure functions F_2 for
different nuclei in the range from the deuteron to the lead. We express the
off-shell effect and the effective scattering amplitude describing nuclear
shadowing in terms of few parameters which are common to all nuclei and have a
clear physical interpretation. The parameters are then extracted from
statistical analysis of data. As a result, we obtain an excellent overall
agreement between our calculations and data in the entire kinematical region of
x and Q^2. We discuss a number of applications of our model which include the
calculation of the deuteron structure functions, nuclear valence and sea quark
distributions and nuclear structure functions for neutrino charged-current
scattering.


title: Magnetic vortex in color-flavor locked quark matter

abstract:
  Within Ginzburg-Landau theory, we study the structure of a magnetic vortex in
color-flavor locked quark matter. This vortex is characterized by winding of
the SU(3) phase in color-flavor space, as well as by the presence of a
color-flavor unlocked condensate in the core. We estimate the upper and lower
critical fields and the critical Ginzburg-Landau parameter that distinguishes
between type I and type II superconductors.


title:
Transversity in Drell-Yan process of polarized protons and antiprotons
  in PAX experiment

abstract:
  Estimates are given for the double spin asymmetry in lepton-pair production
from collisions of transversely polarized protons and antiprotons for the
kinematics of the recently proposed PAX experiment at GSI on the basis of
predictions for the transversity distribution from the chiral quark soliton
model.


title: $B \to \chi_{c0,2} K$ decays: a model estimation

abstract:
  In this paper, we investigate the vertex corrections and spectator hard
scattering contributions to $B \to \chi_{c0,2}K$ decays, which has no leading
contribution from naive factorization scheme. A non-zero binding energy
$b=2m_c-M$ is introduced to regularize the infrared divergence of the vertex
part. The spectator diagrams also contain logarithmic and linear infrared
divergences, for which we adopt a model dependent parametrization. If we
neglect possible strong phases in the hard spectator contributions, we obtain a
too small branching ratio for $\chi_{c0}K$ while too large one for
$\chi_{c2}K$, as can be seen from the ratio of the branching ratio of $B^+ \to
\chi_{c2}K^+$ to that of $B^+ \to \chi_{c0} K^+$, which is predicted to be
$2.15^{+0.63}_{-0.76}$ in our model, while experimentally it should be about
0.1 or even smaller. But a closer examination shows that, assuming large strong
phases difference between the twist-2 and twist-3 spectator terms, together
with a slightly larger spectator infrared cutoff parameter $\Lambda_h$, it is
possible to accommodate the experimental data. This shows that, for $B\to
\chi_{c0,2}K$ decays with no factorizable contributions, QCDF seems capable of
producing decay rates close to experiments, in contrast to the $B\to J/\psi K$
decay which is dominated by the factorizable contributions.


title:
Dilepton decays and oscillation of $B_{s}$ in split supersymmetry with
  R-parity violation

abstract:
  We study $B$ physics phenomenology in the scenario of split supersymmetry
without R-parity. By assuming the constraints of bilinear (trilinear) R-parity
violating couplings, which are introduced to solve the problem of the
atmospheric (solar) neutrino mass, we show that the decay branching ratios of
$B_{s}\to \ell^{+} \ell^{-}$ and the mixing of $B_s-\bar{B}_s$ can be large.
Explicitly, we find that $B(B_s\to\mu^+\mu^-)=O(10^{-7})$ and $\Delta
m_{B_s}=O(10^{-9}) GeV$, which should be observed at future hadron colliders.


title:
Hard Scattering in a Nuclear Environment: Farewell to Linear
  $k_{\perp}$-Factorization

abstract:
  We discuss a dramatic change brought into the pQCD description of hard
processes in a nuclear environment by a large thickness of heavy nuclei. It
breaks the familiar linear $k_{\perp}$-factorization which must be replaced by
a new concept of the nonlinear $k_{\perp}$-factorization introduced in
\cite{Nonlinear}.We demonstrate the salient features of nonlinear
$k_{\perp}$-factorization on several examples from hard dijet production in DIS
off heavy nuclei to single-jet to dijet production in hadron-nucleus collisions
>. We also comment briefly on the non-linear BFKL evolution for gluon density
of nuclei.


title:
Determination of the quarkonium--gluonium content of the isoscalar
  tensor resonances $f_2(1920)$, $f_2(2020)$, $f_2(2240)$, $f_2(2300)$ and of
  the broad state $f_2(2000)$ based on decay couplings to
  $\pi^0\pi^0,\eta\eta,\eta\eta'$

abstract:
  In the reactions $p\bar p\to\pi^0\pi^0,\eta\eta,\eta\eta'$ there are four
relatively narrow resonances $f_2(1920)$, $f_2(2020)$, $f_2(2240)$,
$f_2(2300)$, and a broad one $f_2(2000)$ in the mass region 1990--2400 MeV. In
the framework of quark combinatorics we carry out an analysis of the decay
constants for all five resonances. It is shown that the relations for the decay
constants corresponding to the broad resonance
$f_2(2000)\to\pi^0\pi^0,\eta\eta, \eta\eta'$ are the same as those
corresponding to a glueball. An additional argument in favour of the
glueball--nature of $f_2(2000)$ is the fact that $f_2(1920)$, $f_2(2020)$,
$f_2(2240)$, $f_2(2300)$ fit well the $q\bar q$ trajectories in the
$(n,M^2)$-plane (where $n$ is the radial quantum number), while the broad
$f_2(2000)$ resonance turns out to be an unnecessary extra state for these
trajectories.


title: Chiral quark filtering mechanism of hyperon polarization

abstract:
  The model combined with unitarity and impact parameter picture provide a
rather simple mechanism of hyperon polarization generation in collision of
unpolarized hadrons. We concentrate on a particular problem of
$\Lambda$-hyperon polarization and derive its linear $x_F$-dependence as well
as its energy and transverse momentum independence at large $p_\perp$.
Mechanism responsible for the single--spin asymmetries in pion production is
also discussed.


title: Quasilocal Quark Models as Effective Theory of Non-perturbative QCD

abstract:
  We consider the Quasilocal Quark Model of NJL type (QNJLM) as an effective
theory of non-perturbative QCD including scalar (S), pseudoscalar (P), vector
(V) and axial-vector (A) four-fermion interaction with derivatives. In the
presence of a strong attraction in the scalar channel the chiral symmetry is
spontaneously broken and as a consequence the composite meson states are
generated in all channels. With the help of Operator Product Expansion the
appropriate set of Chiral Symmetry Restoration (CSR) Sum Rules in these
channels are imposed as matching conditions to QCD at intermediate energies.
The mass spectrum and some decay constants for ground and excited meson states
are calculated.


title:
Threshold Resummation for Drell-Yan Process in Soft-Collinear Effective
  Theory

abstract:
  We consider Drell-Yan process in the threshold region $z\to 1$ where large
logarithms appear due to soft-gluon radiations. We present a soft-collinear
effective theory approach to re-sum these Sudakov-type logarithms following an
earlier treatment of deep inelastic scattering, and the result is consistent
with that obtained earlier through perturbative QCD factorization


title: Relaxing Constraints on Inflation Models with Curvaton

abstract:
  We consider the effects of the curvaton, late-decaying scalar condensation,
to observational constraints on inflation models. From current observations of
cosmic density fluctuations, severe constraints on some class of inflation
models are obtained, in particular, on the chaotic inflation with higher-power
monomials, the natural inflation, and the new inflation. We study how the
curvaton scenario changes (and relaxes) the constraints on these models.


title:
Embedding the neutrino four-group Z_2 x Z_2 into the alternating group
  of four objects A_4

abstract:
  If and only if the small neutrino mixing sine s_13 is put zero, the effective
neutrino mass matrix M with any mixing sines s_12 and s_23 is invariant under a
cyclic group Z_2 of the order two and -- in the limit of m_2 - m_1 --> 0 --
also under the group Z_2 x Z_2 often called the four-group. However, the
elements of this group do not build up fully the term of M proportional to m_2
- m_1. When the four-group is embedded into the group of even permutations of
four objects A_4 (which is of the order twelve), then the term of M
proportional to m_2 - m_1 can be fully constructed from elements of A_4. In
contrast, when the four-group is embedded into the dihedral group D_4 of the
order eight, then the term of M proportional to m_2 - m_1 cannot be fully built
up from elements of D_4.