title: Color dielectric model with two scalar fields

abstract:
  SU(2) Yang-Mills theory coupled in a non-minimal way to two scalar fields is
discussed. For the massless scalar fields a family of finite energy solutions
generated by an external, static electric charge is found. Additionally, there
is a single solution which can be interpreted as confining one. Similar
solutions have been obtained in the magnetic sector. In case of massive scalar
fields the Coulomb problem is investigated. We find that asymptotic behavior of
the fields can also, for some values of the parameter of the model, give
confinement of the electric charge. Quite interesting one glueball--meson
coupling gives the linear confining potential. Finally, it is shown that for
one non-dynamical scalar field we derive the color dielectric generalization of
the Pagels--Tomboulis model.


title: Semileptonic Hyperon Decays and CKM Unitarity

abstract:
  Using a technique that is not subject to first-order SU(3) symmetry breaking
effects, we determine the $V_{us}$ element of the CKM matrix from data on
semileptonic hyperon decays. We obtain $V_{us}$ =0.2250(27). This value is of
similar precision to the one derived from $K_{l3}$, but higher and in better
agreement with the unitarity requirement, $|V_{ud}|^2+|V_{us}|^2+|V_{ub}|^2=1$.


title:
Comparison of approximate to exact next-to-next-to leading order
  corrections for Higgs and pseudoscalar Higgs boson production

abstract:
  Recently obtained NNLO exact corrections for Higgs and Pseudoscalar Higgs
boson production in hadron colliders are compared with approximate ones. As
shown before, it is found that there is a range of a proper variable where
these corrections differ little.


title: Explosive Dark Matter Annihilation

abstract:
  If the Dark Matter (DM) in the Universe has interactions with the
standard-model particle, the pair annihilation may give the imprints in the
cosmic ray. In this paper we study the pair annihilation processes of the DM,
which is neutral, however has the electroweak (EW) gauge non-singlet. In this
estimation the non-relativistic (NR) effective theory in the EW sector is a
suitable technique. We find that if the DM mass is larger than about 1 TeV, the
attractive Yukawa potentials induced by the EW gauge bosons have significant
effects on the DM annihilation processes, and the cross sections may be
enhanced by several orders of magnitude, due to the zero energy resonance under
the potentials. Especially, the annihilation to two $\gamma$'s might have a
comparable cross section to other tree-level processes, while the cross section
under the conventional calculation is suppressed by a loop factor. We also
discuss future sensitivities to the $\gamma$ ray from the galactic center by
the GLAST satellite detector and the Air Cerenkov Telescope (ACT) arrays.


title:
Relativistic Instant--Form Approach To The Structure Of Two-Body
  Composite Systems. Nonzero Spin

abstract:
  The relativistic approach to electroweak properties of two-particle composite
systems developed in Ref. [A.F.Krutov, V.E.Troitsky, Phys.Rev.C. 65 (2002)
045501] is generalized here to the case of nonzero spin. In developed technique
the parametrization of matrix elements of electroweak current operators in
terms of form factors is a realization of the Wigner--Eckart theorem on the
Poincar\'e group and form factors are reduced matrix elements. The $\rho$ meson
charge form factor is calculated as an example.


title: CKM matrix and CP violation in B-mesons

abstract:
  Planned as a review of CPV in B-mesons which covered recent B-factories
results these lectures appeared to be a bit wider. It is not natural to be
limited by direct CPV and that in mixing in B-mesons and not to speak about the
analogous phenomena in K-mesons since it is very useful and interesting to
study what is common and what is different in these systems and why. CKM matrix
elements are extracted from K and B mixings and decays and the deviation from
unitarity of CKM matrix may become a place in which New Physics will show up.
So we discuss this simple and elegant piece of Standard Model as well.


title:
The NNLO predictions for the rates of the W/Z production in pp and pbar
  p collisions

abstract:
  The NNLO rates of the intermediate vector boson production (IVB) are
calculated and found to agree with the preliminary results of Run II at the
Fermilab pbar p collider. The estimated uncertainties in NNLO predictions for
the IVB rates including the errors in PDFs, $\alpha_s$, and the
factorization/renormalization scales are about 2% for the Fermilab collider and
3% for the LHC that allows to use these predictions as a competitive benchmark
for calibration of the collision luminosity.


title: Perturbative HQET

abstract:
  Methods of calculation of loop diagrams in Heavy Quark Effective Theory
(HQET) are presented.


title: Meson Structure Functions in Valon Model

abstract:
  Parton distributions in a {\it{valon}} in the next-to-leading order is used
to determine the patron distributions in pion and kaon. The validity of the
valon model is tested and shown that the partonic content of the valon is
universal and independent of the valon type. We have evaluated the valon
distribution in pion and kaon, and in particular it is shown that the results
are in good agreement with the experimental data on pion structure in a wide
range of $x=[10^{-4},1]$


title: Supernova Neutrino Detection in a liquid Argon TPC

abstract:
  A liquid Argon TPC (ICARUS-like) has the ability to detect neutrino bursts
from type-II supernova collapses, via three processes: elastic scattering by
electrons from all neutrino species, and $\nu_e$ charged current absorption on
$Ar$ with production of excited $K$ and $\bar\nu_e$ charged current absorption
on $Ar$ with production of excited $Cl$. In this paper we have used new
calculations in the random phase approximation (RPA) for the absorption
processes. The anti-neutrino reaction $\bar\nu_e ^{40}Ar$ absorption has been
considered for the first time. For definiteness, we compute rates for the 3
kton ICARUS detector: 244 events are expected from a supernova at a distance of
10 kpc, without considering oscillation effects. The impact of oscillations in
the neutrino rates will be discussed in a separate paper. We also discuss the
ability to determine the direction of the supernova.


title:
Muon Spectra of Quasi-Elastic and 1-Pion Production Events in LBL
  Neutrino Oscillation Experiments

abstract:
  The muon energy spectra of the quasi-elastic and 1-pion production events in
a LBL experiment, like K2K, are predicted to follow closely the neutrino energy
spectrum, with downward shifts of the energy scale by $<Q^2>/2 M$ and $(<Q^2> +
M_\Delta^2 - M^2)/2 M$ respectively. These predictions seem to agree with the
observed muon spectra in the K2K nearby detector. The corresponding muon
spectra in the far-away (SK) detector are predicted to show characteristic
spectral distortions induced by $\nu_\mu$ oscillation. Comparison of the
predicted spectral distortions with the observed muon spectra of the 1-Ring and
2-Ring muon events in the SK detector will help to determine the oscillation
parameters. The results will be applicable to other LBL experiments as well.


title: Solar Neutrino Oscillation Phenomenology

abstract:
  This article summarises the status of the solar neutrino oscillation
phenomenology at the end of 2002 in the light of the SNO and KamLAND results.
We first present the allowed areas obtained from global solar analysis and
demonstrate the preference of the solar data towards the Large-Mixing-Angle
(LMA) MSW solution. A clear confirmation in favor of the LMA solution comes
from the \kl reactor neutrino data. The \kl spectral data in conjunction with
the global solar data further narrows down the allowed LMA region and splits it
into two allowed zones -- a low $\Delta m^2$ region (low-LMA) and high $\Delta
m^2$ region (high-LMA). We demonstrate through a projected analysis that with
an exposure of 3 kton-year (kTy) \kl can remove this ambiguity.


title: Non-Universal Gaugino Masses and the Fate of mu -> e gamma

abstract:
  We study charged lepton flavor violating processes in the context of
supersymmetric models with non-universal gaugino masses. We consider the
generic case of free gaugino masses, as well as specific models based on
gaugino mediation and SU(5) GUTs. Under the assumption that the main source of
lepton flavor violation resides in the off-diagonal elements of the left handed
slepton mass matrix, we show that BR(mu->e gamma) strongly depends on gaugino
non-universality. When M_1 and M_2 have opposite signs, cancellations occurring
between the neutralino and the chargino contributions can suppress, even
completely, the branching ratio of charged lepton flavor violating decays.
Moreover, we find that for M_3> M_2,M_1, BR(mu->e gamma) is an increasing
function of M_3.


title:
Five-Dimensional QED, Muon Pair Production and Correction to the Coulomb
  Potential

abstract:
  We consider QED in five dimensions in a configuration where matter is
localized on a 3-brane while foton propagates in the bulk. The idea is to
investigate the effects of the Kaluza-Klein modes of the photon in the
relativistic regime, but in low energy, and in the nonrelativistic regime. In
the relativistic regime, we calculate the cross section for the reaction $e^+ +
e^- \to \mu^+ + \mu^-$. We compare our theoretical result with a precise
measurement of this cross section at $\sqrt{s}=57.77$ GeV. As result, we
extract a lower bound on the size of the extra dimension. In the
nonrelativistic regime, we derive the contribution for the Coulomb potential
due to the whole tower of the Kaluza-Klein excited modes of the photon. We use
the modified potential to calculate the Rutherford scattering differential
cross section.


title: Constraints on Axial Two-Body Currents from Solar Neutrino Data

abstract:
  We briefly review recent calculations of neutrino deuteron cross sections
within the effective field theory and traditional potential model approaches.
We summarize recent efforts to determine the counter term describing axial
two-body currents, L_{1A}, in the effective field theory approach. We determine
the counter term directly from the solar neutrino data and find several,
slightly different, ranges of L_{1A} under different sets of assumptions. Our
most conservative fit value with the largest uncertainty is L_{1A} = 4.5
+18/-12 fm^3. We show that the contribution of the uncertainty of L_{1A} to the
analysis and interpretation of the solar neutrino data measured at the Sudbury
Neutrino Observatory is significantly less than the uncertainty coming from the
lack of having a better knowledge of \theta_{13}.


title:
Updated Limits on TeV-Scale Gravity from Absence of Neutrino Cosmic Ray
  Showers Mediated by Black Holes

abstract:
  We revise existing limits on the D-dimensional Planck scale M_D from the
nonobservation of microscopic black holes produced by high energy cosmic
neutrinos in scenarios with D=4+n large extra dimensions. Previous studies have
neglected the energy radiated in gravitational waves by the multipole moments
of the incoming shock waves. We include the effects of energy loss, as well as
form factors for black hole production and recent null results from cosmic ray
detectors. For n>4, we obtain M_D > 1.0 - 1.4 TeV. These bounds are among the
most stringent and conservative to date.


title: Mass formula for 2 dimensional flavorful mesons

abstract:
  We analytically and numerically investigate the 't Hooft equations, the
lowest order mesonic Light-Front Tamm-Dancoff equations for $\rm SU(N_C)$ and
$\rm U(N_C)$ gauge theories, generalized to flavor non singlet mesons. We find
the wave function can be well approximated by new basis functions and obtain an
analytic and an empirical formulae for the mass of the lightest bound state.
Its value is consistent with the precedent results.


title:
Time Evolution of Tunneling in Thermal Medium -- Environment-driven
  Excited Tunneling --

abstract:
  Time evolution of tunneling phenomena proceeding in thermal medium is studied
using a standard model of environment interaction. A semiclassical probability
formula for the particle motion in a metastable state of one dimensional system
put in thermal medium is combined with the formula of quantum penetration
factor through a potential barrier, to derive the tunneling rate in medium.
Effect of environment, its influence on time evolution in particular, is
clarified in a real-time formalism. A nonlinear resonance effect is shown to
enhance the tunneling rate at finite times of order $2/\eta $, with $\eta $ the
friction coefficient. In the linear approximation this effect has relevance to
the parametric resonance. This effect enhances the possibility of early
termination of the cosmological phase transition much prior to the typical
Hubble time.


title: Deep Electroproduction of Photons and Mesons on the Deuteron

abstract:
  We study deeply virtual Compton scattering and deep exclusive meson
electroproduction on a deuteron target. We model the Generalized Quark
Distributions in the deuteron by using the impulse approximation for the lowest
Fock-space state on the light-cone. We study the properties of the resulting
GPDs, and verify that sum rules violations are quite small in the impulse
approximation. Numerical predictions are given for the unpolarized cross
sections and polarization asymmetries for the kinematical regimes relevant for
JLab experiments and for HERMES at HERA. We conclude that the signal of
coherent scattering on the deuteron is comparable to the one on the proton at
least for low momentum transfer, providing support to the feasibility of the
experiments. The short distance structure of the deuteron may thus be
scrutinized in the near future.


title: Pentaquark states in a chiral potential

abstract:
  We discuss a possible interpretation for the pentaquark baryon $\Theta^+$
which has an exotic quantum number of strangeness $S = +1$. The role of the
pion which modifies the structure of single-particle levels of quarks is
examined. When the pion field is sufficiently strong, the ground state of five
quarks for $\Theta^+$ acquires positive parity. If this is the case, an excited
state may appear slightly above the ground state with negative parity.


title: On charm baryon resonances and chiral symmetry

abstract:
  We study heavy-light baryon resonances with quantum numbers J^P=1/2^- in
terms of the non-linear chiral SU(3) Lagrangian. Within the chi-BS(3) approach
a parameter-free leading order prediction is obtained for the scattering of
Goldstone bosons off heavy-light baryon resonances with J^P=1/2^+. The three
states Lambda_{c1}(2593), Lambda_{c0}(2880) and Xi_{c1}(2790) discovered by the
CLEO collaboration are recovered. We suggest the existence of resonance states
that form an anti-quindecimplet, two sextet and two anti-triplet
representations of the SU(3) group. In particular, narrow states with anomalous
isospin (I) and strangeness (S) quantum numbers (I,S)=(1/2,+1) are anticipated.


title: QCD explanation of oscillating hadron and jet multiplicity moments

abstract:
  Ratios of multiplicity moments, H_q (cumulant over factorial moments
K_q/F_q), have been observed to show an oscillatory behaviour with respect to
order, q. Recent studies of e^+e^- annihilations at LEP have shown, moreover,
that the amplitude and oscillation length vary strongly with the jet resolution
parameter y_{cut}. We study the predictions of the perturbative QCD parton
cascade assuming low non-perturbative cut-off (Q_0\sim \Lambda_{QCD}\sim few
100 MeV) and derive the expectations as a function of the cms energy and jet
resolution from threshold to very high energies. We consider numerical
solutions of the evolution equations of gluodynamics in Double Logarithmic and
Modified Leading Logarithmic Approximations (DLA,MLLA), as well as results from
a parton MC with readjusted parameters. The main characteristics are obtained
in MLLA, while a more numerically accurate description is obtained by the MC
model. A unified description of correlations between hadrons and correlations
between jets emerges, in particular for the transition region of small y_{cut}.


title: Proton strange form factors and SAMPLE experiments

abstract:
  We study the chiral models such as the Skyrmion and chiral bag to investigate
the baryon strange form factors associated with the SAMPLE experiments.


title:
Beam-size or MD-effect at colliders and correlations of particles in a
  beam

abstract:
  For several processes at colliding beams, macroscopically large impact
parameters give an essential contribution to the standard cross section. These
impact parameters may be much larger than the transverse sizes of the colliding
bunches. In that case, the standard calculations have to be essentially modify.
The corresponding formulae for such a beam-size effect were given twenty years
ago without taking into account correlations of particle coordinates in the
beams. In the present paper we derive formulae which necessary to take into
account quantitatively the effect of particle correlations in the spectrum of
bremsstrahlung as well as in pair production. Besides, we consider critically
recent papers of Baier and Katkov [Phys. Rev. D {\bf 66}, 053009 (2002) and
hep-ph/0305304] in which it was calculated a new additional ``subtraction
term'' related to the coherent contribution into beam-size effect. We show that
this result is groundless and point out the origin of the mistake.


title: Consequences of Triplet Seesaw for Leptogenesis

abstract:
  We present the various leptogenesis scenarios which may occur if, in addition
to the ordinary heavy right-handed neutrinos, there exists a heavy scalar
SU(2)_L triplet coupled to leptons. We show that the contributions of the
right-handed neutrinos and the triplet to the lepton asymmetry are proportional
to their respective contributions to the neutrino mass matrix. A consequence of
the triplet contribution to the lepton asymmetry is that there is no more upper
bound on the neutrino masses from leptogenesis due to the fact that the
neutrino mass constraints do not necessarily induce asymmetry washout effects.
We also show how such a triplet leptogenesis mechanism may emerge naturally in
the framework of the left-right symmetric theories, such as Pati-Salam or
SO(10).


title: Forward-Backward Charge Asymmetry at Very High Energies

abstract:
  The impact of the electroweak radiative corrections on the value of the
forward-backward asymmetry in e^+ e^- annihilation into a quark-antiquark pair
is considered in the double-logarithmic approximation at energies much higher
than the masses of the weak bosons.


title: The anomalous magnetic moment of the muon: a theoretical introduction

abstract:
  These notes, based on the lectures delivered at the 2003 Schladming School of
Theoretical Physics, provide an introduction to the theory of the anomalous
magnetic moments of the muon and of the electron.


title: Texture of Yukawa coupling matrices in general two-Higgs-doublet model

abstract:
  We discuss possible parallel textures of the Yukawa coupling matrices in the
generaltwo-Higgs-doublet model (2HDM). In those textures the flavor changing
neutral currentsare naturally suppressed. Motivated by a phenomenologically
successful texturewith four texture zeros in the standard model, we propose a
predictive ansatz for the Yukawa coupling matrices with the same texture in the
general 2HDM. Compared with the six texture-zero based ansatz proposed by Cheng
and Sher, it is in a better agreement with the data of quark mixings and CP
violation. The four texture-zero based ansatz predicts a different hierarchy in
the Yukawa coupling matrix elements. As a consequence, in the lepton sector,
the related Yukawa couplings are less constrained by the experimental upper
bound of $\mu\to e\gamma$, which allows significantly larger predictions for
other processes. The contributions from neutral scalar interactions to the
lepton number violation decay modes $\ell\to \ell_{1}\ell_{2}\ell_{3}$ are
calculated in both ansatz. It is shown that the predictions from the four
texture-zero based ansatz could be two order of magnitude greater than that
from the six texture-zero based one. The branching ratio of $\mu\to 3e$ and
$\tau\to 3\mu$ can reach $7.5 \times 10^{-17}$ and $1.3\tiems 10^{-10}$
respectively. The predicted ratio of $Br(\mu\to 3e)/Br(\tau\to 3e)$ is also
larger and almost parameter independent. Those differences make the two ansatz
to be easily distinguished by the future experiments.


title: On the reheating stage after inflation

abstract:
  We point out that inflaton decay products acquire plasma masses during the
reheating phase following inflation. The plasma masses may render inflaton
decay kinematicaly forbidden, causing the temperature to remain frozen for a
period at a plateau value. We show that the final reheating temperature may be
uniquely determined by the inflaton mass, and may not depend on its coupling.
Our findings have important implications for the thermal production of
dangerous relics during reheating (e.g., gravitinos), for extracting bounds on
particle physics models of inflation from Cosmic Microwave Background
anisotropy data, for the production of massive dark matter candidates during
reheating, and for models of baryogenesis or leptogensis where massive
particles are produced during reheating.


title: Application of K Factors in the H-> ZZ*->4l Analysis at the LHC

abstract:
  Higher order corrections to the Higgs and the non-resonant ZZ production at
the LHC are evaluated within the context of the H->4l analysis for Higgs masses
120<MH<180 gev. The impact of experimental cuts on the Next-to-Leading Order K
factors for Higgs and non-resonant ZZ production is small. The discovery
potential of the H->4l modes is re-evaluated. With the application of
conservative higher order corrections the amount of luminosity needed to
achieve a 5 sigma signal significance with the H-> 4l modes drops by 30-35%,
depending on the Higgs mass.


title:
The Constituent Quark Model Revisited - Quark Masses, New Predictions
  for Hadron Masses and KN Pentaquark

abstract:
  Prompted by the recent surprising results in QCD spectroscopy, we extend to
heavy flavors the hadron mass relations showing that the constituent quark mass
differences and ratios have the same values when obtained from mesons and
baryons. We obtain several new successful relations involving heavy quarks and
provide some related predictions. We discuss in detail the apparent sharp
decrease in m_s and m_c, when a light partner quark in a meson is replaced by a
heavy one and construct a potential model which qualitatively reproduces this
pattern through wave function effects. We apply these ideas to the recently
discovered theta^+ exotic KN resonance and propose its interpretation as a
novel kind of a pentaquark with an unusual color structure, J^P=1/2^+, I=0 and
an antidecuplet of SU(3)_f. A rough mass estimate of this pentaquark is close
to experiment.


title:
Oscillation effects on supernova neutrino rates and spectra and
  detection of the shock breakout in a liquid Argon TPC

abstract:
  A liquid Argon TPC (ICARUS-like) has the ability to detect clean neutrino
bursts from type-II supernova collapses. In this paper, we consider for the
first time the four possible detectable channels, namely, the elastic
scattering on electrons from all neutrino species, $\nu_e$ charged current
absorption on $Ar$ with production of excited $K$, $\bar\nu_e$ charged current
absorption on $Ar$ with production of excited $Cl$ and neutral current
interactions on $Ar$ from all neutrino flavors. We compute the total rates and
energy spectra of supernova neutrino events including the effects of the
three--flavor neutrino oscillation with matter effects in the propagation in
the supernova. Results show a dramatic dependence on the oscillation parameters
and in the energy spectrum, especially for charged-current events. The shock
breakout phase has also been investigated using recent simulations of the core
collapse supernova. We stress the importance of the neutral current signal to
decouple supernova from neutrino oscillation physics.


title: 3+2 neutrinos in a see-saw variation

abstract:
  If the sterile neutrino mass matrix in an otherwise conventional see-saw
model has a rank less than the number of flavors, it is possible to produce
pseudo-Dirac neutrinos. For the rank 1 case, 3+2 scenarios devolve naturally,
as we show by example. Additionally, we find that the lower rank see-saw
suppresses some mass differences, so that small mass differences do not require
that the individual masses of each neutrino must also be small.


title:
CP violation in associated charged Higgs boson production with a single
  top at the LHC

abstract:
  We explore the CP violation in the charged Higgs production associated with a
top quark at the LHC in the MSSM. The supersymmetric phases of gaugino masses
and trilinear $A$ terms lead to a CP violating asymmetry of the cross section
in the $ p p \to g b \to t H^\pm$ process through loop corrections to the
$tbH^\pm$ vertex. We find that a CP violation more than 10 % is possible if the
charged Higgs boson is heavy enough.


title: Constituent Quark and Hadronic Structure in the Next-to-Leading Order

abstract:
  The structure of a dressed quark is utilized to evaluate the structure
function of proton and pion. It is found that there is a simple relationship
between $F_{2}^{p}$ and $F_{2}^{\pi}$. The ambiguity in the normalization of
$F_{2}^{\pi}$ is discussed. Furthermore, the polarization structure function of
the constituent (dressed) quark is calculated in the leading order. While, it
does produce all the available data on polarized hadronic structure, it
requires a significant contribution to the proton spin from the orbital angular
momentum.


title: Open Charm and Beauty Chiral Multiplets in QCD

abstract:
  We study the dynamics of the the spin zero open charm and beauty mesons using
QCD spectral sum rules (QSSR), where we observe the important r\^ole of the
chiral condensate <\bar \psi\psi> in the mass-splittings between the
scalar-pseudoscalar mesons. Fixing the sum rule parameters for reproducing the
well-known D(0-) and Ds(0-) masses, we re-obtain the running charm quark mass:
mc(mc)=1.13^{+0.08}_{-0.04} GeV, which confirms our recent estimate from this
channel [1]. Therefore, using sum rules, with no-free parameters, we deduce
M_{Ds(0+)}= (2297+- 113) MeV, which is consistent with the observed Ds(2317)
meson, while a small SU(3) breaking of about 25 MeV for the Ds(0+)-D(0+)
mass-difference has been obtained. We extend our analysis to the B-system and
find M{B(0+)}- M{B(0-)}= (422+- 196) MeV confirming our old result from moment
sum rules [2]. Assuming an approximate (heavy and light) flavour and spin
symmetries of the mass-splittings as indicated by our results, we also deduce
M_{D*s(1+)}= (2440+-113) MeV in agreement with the observed D{sJ}(2457). We
also get: f{D(0+)}= (217+- 25) MeV much bigger than fpi=130.6 MeV, while the
size of the SU(3) breaking ratio f{Ds(0+)}/f{D(0+)}= 0.93+- 0.02 is opposite to
the one of the 0- channel of about 1.14.


title:
Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix at One-Loop
  Level

abstract:
  We have investigated the present renormalization prescriptions of the
Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix. Based on one prescription
which is formulated by comparing with the fictitious case of no mixing of quark
generations, we propose a new prescription which can make the physical
amplitude involving quark's mixing gauge independent and ultraviolet finite.
Compared with the previous prescriptions this prescription is very simple and
suitable for actual calculations. Through analytical calculations we also give
a strong Proof for the important hypothesis that in order to keep the CKM
matrix gauge independent the unitarity of the CKM matrix must be preserved.


title: A Completed Chiral Fermionic Sector Model with Little Higgs

abstract:
  The Standard Model has some intrinsic beauty in the sector of fermions and
gauge bosons. Its scalar sector, though minimal, is however haunted by the
hierarchy problem. The fermionic spectrum also have two major problems, the
flavor problem with its fundamental notion about why there are three families,
and the phenomenological limitation of massless neutrinos. We present here a
completed chiral fermionic sector model, based on a little Higgs model, that
has the plausible potential of addressing all these problems of the SM at an
accessible energy scale, and comment briefly on its phenomenology. The focus
here is not on the little Higgs part, but rather on the electroweak quarks and
leptons from the model, which of course from an important part of the full
model.


title: Implications of Non-Standard CP Violation in Hadronic $B$-Decays

abstract:
  We investigate a class of models for new physics which could produce a large
difference in sin 2 beta between B0-> J/\psi K(S) and the ``pure penguin'' mode
B0-> phi K(S). In such models, the dominant effect is through a Z-penguin and
therefore a pattern of deviation in sin 2beta as measured in B0-> chi(1) K(S);
eta(c) K(S); J/\psi K(S) and psi-prime K(S) is predicted. If the preliminary
data concerning the discrepancy between J/\psi K(S) and phi K(S) proves correct
in magnitude, discrepancies in these other modes would likely be observable. We
also consider the effects such new physics could have on the B(s) system and
the isospin analysis of B-> K\pi. We compare this scenario with a scenario
where contributions to sin 2beta in various modes is produced by gluino loops
and down squark mixing.


title: The Supersymmetric Axion and Cosmology

abstract:
  In this lecture we review several cosmological issues associated with the
axion. Axion solves the strong CP problem and is a good candidate for the dark
matter. Limits, which are imposed by the value of isocurvature fluctuations
fraction in the observed CMBR from WMAP data and the domain wall problem are
discussed in a supersymmetric flat direction axion model.


title:
Spontaneous breaking of the lepton number and invisible majoron in a
  3-3-1 model

abstract:
  In this work we implement the spontaneous breaking of the lepton number in
the version II of the 3-3-1 models and study their phenomenological
consequences. The main result of this work is that our majoron is invisible
even though it belongs to a triplet representation by the 3-3-1 symmetry.


title:
Integral and derivative dispersion relations in the analysis of the data
  on $pp$ and $\bar pp$ forward scattering

abstract:
  Integral and derivative dispersion relations (DR) are considered for the $pp$
and $\bar pp$ forward scattering amplitudes. A new representation for the
derivative DR, valid at lower energies than the standard one, is obtained. The
data on the total cross sections of $pp (\bar pp)$ interaction as well as those
on the ratio of the real part to the imaginary part of the forward amplitude
are analyzed within various forms of the DR and high-energy Regge models. It is
shown that three models for the pomeron, simple pole with intercept larger than
one, triple pole pomeron and double pole pomeron (both with intercept equal to
one) lead to practically equivalent descriptions of the data at $\sqrt{s}>5$
GeV. It is also shown that the low-energy part of the dispersion integral (from
the two-proton threshold up to $\sqrt{s}=5$ GeV) allows one to reproduce well
the data on $\rho$ at lower energies without additional free parameters


title: Experimental Signatures of Kahler Stabilization of the Dilaton

abstract:
  We investigate the collider signatures of modular invariant gaugino
condensation, with Kahler stabilization of the dilaton, in the context of
weakly coupled heterotic string-based models as an example of how supergravity
can be used to build a meaningful string phenomenology.


title: Renormalons in exclusive meson electroproduction

abstract:
  We discuss the possibility of measuring generalized parton distributions in
exclusive electroproduction of mesons off the nucleon and estimate the
uncertainty from perturbatively induced higher-twist corrections. We find that,
while the magnitude of the cross section changes significantly taking into
account twist-four contributions modeled via renormalons, the transverse spin
asymmetry is weakly sensitive to them and displays the precocious scaling.


title: Physics of supernova neutrinos: flavor conversion effects

abstract:
  I review the effects of flavor conversion of neutrinos from stellar collapse
due to masses and mixing, and discuss the motivations for their study. I
consider in detail the sensitivity of certain observables (characteristics of
the energy spectra of nu_e and antinu_e events) to the 13-mixing
(sin^2\theta_13) and to the type of mass hierarchy/ordering (sign[Delta
m^2_13]). These observables are: the ratio of average energies of the spectra,
r_E =<E>/<\bar E >, the ratio of widths of the energy distributions, r_Gamma =
Gamma/\bar Gamma, the ratios of total numbers of nu_e and antinu_e events at
low energies, S, and in the high energy tails, R_tail. I show that regions in
the space of observables r_E, r_Gamma, R_tail exist in which certain mass
hierarchy and intervals of sin^2\theta_13 can be identified or discriminated.
Finally, I discuss the potential of studying regeneration effects on nu_e and
antinu_e in the matter of the Earth and point out that both the observation or
exclusion of these effects lead to model-independent information on
sin^2\theta_13 and the mass hierarchy. The extraction of this information would
highly benefit from the presence of a new, large, long lived nu_e detector, and
from the progress of theoretical predictions of the fluxes and energy spectra
of the neutrinos originally produced in the star.


title: New Results from the PIBETA Experiment

abstract:
  We report interim results of the PIBETA experiment analysis for the pion beta
decay and pion radiative decay. The former is in excellent agreement with the
SM predictions at the 1% accuracy level.


title:
Reevaluating Bounds on Flavor-Changing Neutral Current Parameters in
  R-parity Conserving and R-parity Violating Supersymmetry from B0 - bar(B0)
  Mixing

abstract:
  We perform a systematic reevaluation of the constraints on the
flavor-changing neutral current (FCNC) parameters in R-parity conserving and
R-parity violating supersymmetric models. As a typical process, we study the
constraints coming from the measurements on the B0-\bar{B0} system on the
supersymmetric $\delta^d_{13}$ parameters, as well as on the products of the
lambda' type R-parity violating couplings. Present data allows us to put
constraints on both the real and the imaginary parts of the relevant
parameters.


title: Non-equilibrium phenomena in the QCD phase transition

abstract:
  Within the context of the linear $\s$-model for two flavours, we investigate
non-equilibrium phenomena that may occur during the QCD chiral phase transition
in heavy-ion collisions. We assume that the chiral symmetry breaking is
followed by a rapid quench so that the system falls out of thermal equilibrium.
We study the mechanism for the amplification of the pion field during the
oscillations of the $\s$-field towards and around its new minimum. We show that
the pion spectrum develops a characteristic pronounced peak at low momenta.


title: Universality-breaking effects in DIS and Drell-Yan

abstract:
  Several properties of high energy hadronic collisions are illustrated by
comparing DIS and the Drell-Yan process within a scalar QED model. Diffraction
and transverse momentum broadening within the target system are found to be
non-universal. Here these effects are simply due to the Coulomb phase shift in
the Drell-Yan production amplitude.


title: MRST partons and uncertainties

abstract:
  We discuss uncertainties in the extraction of parton distributions from
global analyses of DIS and related data. We present conservative sets of
partons, at both NLO and NNLO, which are stable to x,Q^2,W^2 cuts on the data.
We give the corresponding values of alpha(M_Z^2) and the cross sections for W
production at the Tevatron.


title:
The Unexpected Role of Final State Interactions in Deep Inelastic
  Scattering

abstract:
  Rescattering of the struck quark in Deep Inelastic Scattering implies that
measured parton distributions are not directly related to the Fock state
probabilities of the target wave function. The production amplitudes acquire
dynamical phases, which gives rise to shadowing and diffraction in DIS. I
review the kinematics and dynamics of DIS as seen in various frames and gauges.


title: Muonium-Antimuonium oscillations and massive Majorana neutrinos

abstract:
  The electron and muon number violating muonium-antimuonium oscillation
process can proceed provided neutrinos have non-zero masses and mix among the
various generations. Modifying the Standard Model only by the inclusion of
singlet right handed neutrino fields and allowing for general neutrino masses
and mixings, the leading order matrix element contributing to this process is
computed. For the particularly interesting case where the neutrino masses are
generated by a see-saw mechanism with a very large Majorana mass $M_R>>M_W$, it
is found that both the very light and very heavy Majorana neutrinos each give
comparable contributions to the oscillation time scale proportional to $M_R^2$.
Present experimental limits set by the non-observation of the oscillation
process sets a lower limit on $M_R$ of roughly of order $10^4$ GeV.


title: DIS 2003 - An Overview

abstract:
  An overview of DIS 2003 is given with a focus on small-x physics and the
interrelationship between deep inelastic scattering and heavy ion physics which
furnishes much of the basic information for understanding high-density QCD
matter. In addition to small-x physics, topics covered include single spin
asymmeteries, light-cone gauge choices, strange quarks in the proton and
non-global observables in jet decays.


title:
Homestake result, sterile neutrinos and low energy solar neutrino
  experiments

abstract:
  The Homestake result is about ~ 2 \sigma lower than the Ar-production rate,
Q_{Ar}, predicted by the LMA MSW solution of the solar neutrino problem. Also
there is no apparent upturn of the energy spectrum (R \equiv N_{obs}/N_{SSM})
at low energies in SNO and Super-Kamiokande. Both these facts can be explained
if a light, \Delta m^2_{01} ~ (0.2 - 2) \cdot 10^{-5} eV^2, sterile neutrino
exists which mixes very weakly with active neutrinos: \sin^2 2\alpha ~ (10^{-5}
- 10^{-3}). We perform both the analytical and numerical study of the
conversion effects in the system of two active neutrinos with the LMA
parameters and one weakly mixed sterile neutrino. The presence of sterile
neutrino leads to a dip in the survival probability in the intermediate energy
range E = (0.5 - 5) MeV thus suppressing the Be, or/and pep, CNO as well as B
electron neutrino fluxes. Apart from diminishing Q_{Ar} it leads to decrease of
the Ge-production rate and may lead to decrease of the BOREXINO signal and
CC/NC ratio at SNO. Future studies of the solar neutrinos by SNO, SK, BOREXINO
and KamLAND as well as by the new low energy experiments will allow us to check
this possibility. We present a general analysis of modifications of the LMA
energy profile due to mixing with new neutrino states.


title: Rethinking the Properties of the Quark-Gluon Plasma at $T\sim T_c$

abstract:
  We argue that although at asymptotically high temperatures the QGP in bulk
behaves as a gas of weakly interacting quasiparticles (modulo long-range
magnetism), at temperatures up to few times the critical temperature $T_c$ it
displays different properties. If the running of the QCD coupling constant
continues in the Coulomb phase till the screening length scale, it reaches the
strong coupling treshold $\alpha_s(m_D)\sim 1$. As a result, the Coulomb phase
supports weakly bound Coulombic s-wave $\bar c c$, light quark and even $gg$
states.
  The existence of shallow bound states dramatically increases the
quasiparticle rescattering at low energies, reducing the viscosity and thereby
explaining why heavy ion collisions at RHIC exhibit robust collective
phenomena. In conformal gauge theories at finite temperature the Coulomb
binding persists further in the strong coupling regime, as found for ${\cal
N}=4$ SUSY YM in the Maldacena regime.


title:
Next-to-leading order calculation of three-jet observables in
  hadron-hadron collision

abstract:
  The production of the three jets in hadron-hardon collision is the first more
complex process which allow us to define a branch of variables in order to do
more precise measurement of the strong coupling and the parton distribution
function of the proton. This process is also suitable for studying the
geometrical properties of the hadronic final state at hadron colliders. This
requires next-to-leading order prediction of the three-jet observables. In this
paper we describe the theoretical formalism of such a calculation with
sufficient details. We use a the dipole method to construct Monte Carlo program
for calculating three-jet observables at next-to-leading order accuracy. We
present a theoretical prediction for inclusive and exclusive cross section and
for some relevant event shape variables like transverse thrust, transverse jet
broadening and Et3 variable.


title: Core Structure of Global Vortices in Brane World Models

abstract:
  We study analytically and numerically the core structure of global vortices
forming on topologically deformed brane-worlds with a single toroidally compact
extra dimension. It is shown that for an extra dimension size larger than the
scale of symmetry breaking the magnitude of the complex scalar field at the
vortex center can dynamically remain non-zero. Singlevaluedness and regularity
are not violated. Instead, the winding escapes to the extra dimension at the
vortex center. As the extra dimension size decreases the field magnitude at the
core dynamically decreases also and in the limit of zero extra dimension size
we reobtain the familiar global vortex solution. Extensions to other types of
defects and gauged symmetries are also discussed.


title:
Supersymmetric Effects in Parity-Violating Deep Inelastic
  Electron-Nucleus Scattering

abstract:
  We compute the supersymmetric (SUSY) corrections to the parity-violating,
deep inelastic electron-deuteron asymmetry. Working with the Minimal
Supersymmetric Standard Model (MSSM) we consider two cases: R parity conserving
and R parity-violating. Under these scenarios, we compare the SUSY effects with
those entering other parity-violating observables. For both cases of the MSSM,
we find that the magnitude of the SUSY corrections can be as large as about 1%
and that they are strongly correlated with the effects on other
parity-violating observables. A comparison of various low-energy
parity-violating observables thus provides a potentially interesting probe of
SUSY.


title: Dissociation of Heavy Quarkonium in Quark-Gluon Plasma

abstract:
  In this work we calculate the lifetime of quarkonium moving with velocity $v$
through a quark gluon plasma at temperature $T$. We also investigate the
stability of heavy mesons with respect to the effects of color charge
screening. An explicit, configuration-space potential is found for the screened
interaction between the quarks constituting the meson. We solve the
Schr\"odinger equation for the relative motion of the quarks in this
non-spherical potential. In this way, we determine the range of $v,T$ values
for which the meson is bound. When a bound state exists, we use the bound-state
wavefunction as the initial state for the dissociation of the meson due to
gluon absorption. The meson lifetime is thus determined as a function of $v$
and $T$, and conclusions are drawn concerning the possibility of detection of
the meson in a high-energy heavy-nucleus collision.


title: Propagator of the interacting Rarita-Schwinger field

abstract:
  We obtain in analytical form the dressed propagator of the Rarita-Schwinger
field taking into account all spin components and discuss shortly its
properties.


title: Gapless color superconductivity at zero and at finite temperature

abstract:
  We present a detailed study of the recently proposed gapless color
superconductivity in neutral two-flavor quark matter in beta-equilibrium at
zero as well as at finite temperature. We clarify the nature of the fermionic
quasiparticles, and discuss the physical properties of this gapless phase of
quark matter. The appearance of two "secondary" spin-1 condensates in the
gapless ground state is pointed out. The gluon screening properties are also
discussed. It is found that finite temperature properties of the gapless color
superconductor are rather unusual. One of the most striking results is that the
ratio of the critical temperature to the gap at zero temperature is not a
universal number. Moreover, this ratio could become arbitrarily large at some
values of the coupling constant. In addition, the value of the gap parameter is
not a monotonic function of temperature, although the phase transition is a
second order phase transition. In an extreme case, in fact, a nonzero finite
temperature gap can appear even if its zero temperature value is vanishing.


title: The colored flux tube

abstract:
  It is shown that in the SU(2) Yang - Mills - Higgs theory with broken gauge
symmetry a flux tube solution filled with a color longitudinal electric field
exists. The origin of the gauge symmetry breakdown for this case is discussed.


title: Signatures of quantized TeV scale Black holes in scattering processes

abstract:
  In this paper we shall study the phenomenology of a doubly charged and
neutral exchange black hole in an $(n+3)$ extra-dimensional scenario, where the
black hole shall be treated a normal quantum field.


title:
Supersymmetric effects on Forward Backward asymmetries of $B \to K
  \ell^+ \ell^-$

abstract:
  Leptonic and semi-leptonic rare decays of B-mesons are very clean (both
theoretically and experimentally) signatures of any new physics beyond the
Standard Model (SM). More specifically the decay \btokll has been theoretically
observed to be very sensitive to new physics as the Forward Backward (FB)
asymmetry in this decay mode vanishes in the SM. Supersymmetry, however,
predicts a non-vanishing value of this asymmetry. In this work we will study
the polarized lepton pair FB asymmetry, i.e. the FB asymmetry of the lepton
when one (or both) final state lepton(s) are polarized. We will study these
asymmetries both within the SM and for Supersymmetric corrections to the SM.


title: CP Violation and New Physics

abstract:
  We describe some of the extensions of the SM, including models with
spontaneous CP violation, where New Physics relevant for CP violation may
arise. It is emphasized that the SM predicts a series of exact relations among
various measurable quantities, such as moduli of CKM matrix elements and
rephasing invariant phases. These exact relations provide a stringent test of
the SM, with the potential to reveal New Physics.


title:
Chiral and Color-superconducting Phase Transitions with Vector
  Interaction in a Simple Model (Addenda)

abstract:
  In the preceding paper(Prog.Theor.Phys.108(2002)929 or hep-ph/0207255), we
have shown that the critical line of the first order chiral transition of QCD
can have two endpoints. In this addendum, we elucidate the mechanism to realize
the two-endpoint structure in the QCD phase diagram and argue the robustness
for the appearance of such an interesting phase structure.


title:
Fragmentation functions in SUSY QCD and UHECR spectra produced in
  top-down models

abstract:
  We present results from two different methods for the calculation of hadron
spectra in QCD and SUSY QCD with large primary energies $\sqrt{s}$ up to
$10^{16}$ GeV. The two methods considered are a Monte Carlo (MC) simulation and
the evolution of fragmentation functions described by the
Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equations. We find that the
pion, nucleon and all-hadron spectra calculated with the two methods agree
well. The MC simulation is performed with new hadronization functions (in
comparison with our previous work), motivated by low-energy ($\sqrt s < M_Z$)
data and DGLAP. The hadron spectra calculated with both sets of hadronization
functions agree well, which indicates that our method for calculating the
hadronization function works successfully. The small difference in the
calculated hadron spectra characterizes the uncertainties of this method. We
calculate also the spectra of photons, neutrinos and nucleons and compare them
with other published results. The agreement is good for all $x$ from $\sim
10^{-5}$ up to $x\leq 0.3$. The consistency of the spectra calculated by
different methods allows to consider the spectral shape as a signature of
models with decays or annihilations of superheavy particles, such as
topological defects or superheavy DM. The UHECR spectra from these sources are
calculated.


title: Observing Nucleon Decay in Lead Perchlorate

abstract:
  Lead perchlorate, part of the OMNIS supernova neutrino detector, contains two
nuclei, 208Pb and 35Cl, that might be used to study nucleon decay. Both would
produce signatures that will make them especially useful for studying
less-well-studied neutron decay modes, e.g., those in which only neutrinos are
emitted.


title: NLO Scale Dependence of Semi-Inclusive Processes

abstract:
  We discuss the order \alpha_s^2 gluon initiated QCD corrections to one
particle inclusive deep inelastic processes. We focus in the NLO evolution
kernels relevant for the non homogeneous QCD scale dependence of these cross
sections and factorization.


title: Collins fragmentation function from gluon rescattering

abstract:
  We estimate the Collins fragmentation function by introducing the effect of
gluon rescattering in a model calculation of the fragmentation process. We
include all necessary diagrams to the one-loop level and compute the nontrivial
phases giving rise to the Collins function. We compare our results to the ones
obtained from pion rescattering. We conclude that three out of four one-loop
diagrams give sizeable contributions to the Collins function, and that the
effect of gluon rescattering has a magnitude comparable to that of pion
rescattering, but has opposite sign.


title: Nonperturbative aspects of the QCD analytic invariant charge

abstract:
  In the framework of the analytic approach to Quantum Chromodynamics a new
model for the strong running coupling has recently been developed. Its
underlying idea is to impose the analyticity requirement on the perturbative
expansion of the renormalization group $\beta$ function for restoring the
correct analytic properties of the latter. The proposed model possesses a
number of appealing features. Namely, the analytic invariant charge has no
unphysical singularities at any loop level; it contains no free parameters; it
has universal behavior both in ultraviolet and infrared regions at any loop
level; and it possesses a fair higher loop and scheme stability. The extension
of this model to the timelike region revealed the asymmetrical behavior of the
running coupling in the intermediate- and low-energy domains of spacelike and
timelike regions, that is essential when one handles the experimental data. The
developed approach enables one to describe, in a consistent way, various strong
interaction processes both of perturbative and intrinsically nonperturbative
nature.


title: Tests of the Gravitational Inverse-Square Law

abstract:
  We review recent experimental tests of the gravitational inverse-square law
and the wide variety of theoretical considerations that suggest the law may
break down in experimentally accessible regions.


title: Symmetries and Symmetry Breaking

abstract:
  In understanding the world of matter, the introduction of symmetry principles
following experimentation or using the predictive power of symmetry principles
to guide experimentation is most profound. The conservation of energy, linear
momentum, angular momentum, charge, and CPT involve fundamental symmetries. All
other conservation laws are valid within a restricted subspace of the four
interactions: the strong, the electromagnetic, the weak, and the gravitational
interaction. In this paper comments are made regarding parity violation in
hadronic systems, charge symmetry breaking in two nucleon and few nucleon
systems, and time-reversal-invariance in hadronic systems.


title:
Higher meson resonances in $\rho \to \pi^0 \pi^0 \gamma$ and $\omega \to
  \pi^0 \pi^0 \gamma$

abstract:
  The role of higher meson resonances with spin 1 and 2 is investigated
quantitatively in the decay processes of $\rho \to \pi^0\pi^0 \gamma$ and
$\omega \to \pi^0 \pi^0 \gamma$. Among the higher resonances, we find that the
$f_2(1270)$ tensor meson can give a nontrivial contribution especially to the
$\omega \to \pi^0 \pi^0 \gamma$ decay process. When the $f_2$ contribution is
combined with the processes involving the vector and scalar meson intermediate
states, a good agreement with the recent measurements is achieved for both
decays. The effect of the $f_2(1270)$ is found to be sizable at the
intermediate photon energies and may be verified by precise measurements of the
recoil photon spectrum of the $\omega \to \pi^0 \pi^0 \gamma$ decay. The
dependence of the decay widths on various models for the $\rho$-$\omega$ mixing
in the literature is also investigated.


title:
Study of the effect of neutrino oscillation on the supernova neutrino
  signal with the LVD detector

abstract:
  We present an update of our previous study (astro-ph/0112312) on how $\nu$
oscillations affect the signal from a supernova core collapse observed in the
LVD detector at LNGS. In this paper we use a recent, more precise determination
of the cross section (astro-ph/0302055) to calculate the expected number of
inverse beta decay events, we introduce in the simulation also the $\nu$-{\rm
Fe} interactions, we include the Earth matter effects and, finally, we study
also the inverted mass hierarchy case.


title: Lifetime of Kaonium

abstract:
  The kaon--antikaon system is studied in both the atomic and the strongly
interacting sector. We discuss the influence of the structures of the
$f_0(980)$ and the $a_0(980)$ mesons on the lifetime of kaonium. The strong
interactions are generated by vector meson exchange within the framework of the
standard $SU(3)_V\times SU(3)_A$ invariant effective Lagrangian. In the atomic
sector, the energy levels and decay widths of kaonium are determined by an
eigenvalue equation of the Kudryavtsev--Popov type, with the strong interaction
effects entering through the complex scattering length for $K\bar K$ scattering
and annihilation. The presence of two scalar mesons, $f_0(980)$ and $a_0(980)$,
leads to a ground state energy for the kaonium atom that is shifted above the
point Coulomb value by a few hundred eV. The effect on the lifetime for the
kaonium decay into two pions is much more dramatic. This lifetime is reduced by
two orders of magnitude from $0.8\times 10^{-16}$ sec for annihilation in a
pure Coulomb field down to $3.1\times 10^{-18}$ sec when the strong
interactions are included. The analysis of the two photon decay width of the
$f_0(980)$ suggests a generalization of the molecular picture which reduces the
lifetime of kaonium still further to $1.1\times 10^{-18}\textrm{sec}$.


title:
Proper-Time Formalism in a Constant Magnetic Field at Finite Temperature
  and Chemical Potential

abstract:
  We investigate scalar and spinor field theories in a constant magnetic field
at finite temperature and chemical potential. In an external constant magnetic
field the exact solution of the two-point Green functions are obtained by using
the Fock-Schwinger proper-time formalism. We extend it to the thermal field
theory and find the expressions of the Green functions exactly for the
temperature, the chemical potential and the magnetic field. For practical
calculations the contour of the proper-time integral is carefully selected. The
physical contour is discussed in a constant magnetic field at finite
temperature and chemical potential. As an example, behavior of the vacuum
self-energy is numerically evaluated for the free scalar and spinor fields.


title: Lectures on configuration space methods for sunrise-type diagrams

abstract:
  In this lecture series I will give a fundamental insight into configuration
space techniques which are of help to calculate a broad class of Feynman
diagrams, the sunrise-type diagrams. Applications are shown along with basic
concepts and techniques.


title:
Time-reversal violating generation of static magnetic and electric
  fields and a problem of electric dipole moment measurement

abstract:
  It is shown that in the experiments for search of the EDM of an electron
(atom, molecule) the T-odd magnetic moment induced by an electric field and the
T-odd electric dipole moment induced by a magnetic field will be also measured.
It is discussed how to distinguish these contributions.


title: Hadronic Radiation Patterns in Vector Boson Fusion Higgs Production

abstract:
  We consider the hadronic radiation patterns for the generic process of bb + 2
forward jet production at the LHC, where the (centrally produced) bb originate
either from a Higgs, a Z or from standard QCD production processes. A numerical
technique for evaluating the radiation patterns for non-trivial final states is
introduced and shown to agree with the standard analytic results for more
simple processes. Significant differences between the radiation patterns for
the Higgs signal and the background processes are observed and quantified. This
suggests that hadronic radiation patterns could be used as an additional
diagnostic tool in Higgs searches in this channel at the LHC.


title: Technicolorful Supersymmetry

abstract:
  Technicolor achieves electroweak symmetry breaking (EWSB) in an elegant and
natural way, while it suffers from severe model building difficulties. I
propose to abandon its secondary goal to eliminate scalar bosons in exchange of
solving numerous problems using supersymmetry. It helps to understand walking
dynamics much better with certain exact results. In the particular model
presented here, there is no light elementary Higgs boson and the EWSB is fully
dynamical, hence explaining the hierarchy; There is no alignment problem and no
light pseudo-Nambu-Goldstone bosons exist; The fermion masses are generated by
a ultraviolet-complete renormalizable extended technicolor sector with
techni-GIM mechanism and hence the sector is safe from
flavor-changing-neutral-current constraints; The "e+ e-'' production of
techni-states in the superconformal window is calculable; The electroweak
precision observables are (un)fortunately not calculable.


title:
Observation of Events with Isolated Charged Leptons and Large Missing
  Tra nsverse Momentum and of Events with Multi-Electrons at HERA

abstract:
  Striking events with isolated charged leptons, large missing transverse
momentum and large transverse momentum of the hadronic final state (PTX) have
been observed at the electron proton collider HERA. In the full HERA-I data
sample corresponding to an integrated luminosity of about 130 invpb, the H1
experiment observes 10 events with isolated electrons or muons and with PTX >25
GeV. Only 2.9 pm 0.4 events are expected from Standard Model (SM) processes.
Six of these events have PTX >40 GeV, while 1.1 pm 0.2 events are expected. The
ZEUS experiment observes good agreement with the SM. However, in a preliminary
search ZEUS has found two events with a similar event topology, but tau-leptons
instead of electrons or muons in the final state . Only 0.12 pm 0.02 events are
expected from SM processes.
  Moreover, six events with two or more electrons forming an invariant mass
bigger than 100 GeV have been observed by the H1 experiment. Three events have
two electrons and three events have three electrons, while only 0.25 events are
expected in each case. The ZEUS measurement is in agreement with the SM
expectation.


title: QED vertex form factors at two loops

abstract:
  We present the closed analytic expression of the form factors of the two-loop
QED vertex amplitude for on-shell electrons of finite mass $m$ and arbitrary
momentum transfer $S=-Q^2$. The calculation is carried out within the
continuous $D$-dimensional regularization scheme, with a single continuous
parameter $D$, the dimension of the space-time, which regularizes at the same
time UltraViolet (UV) and InfraRed (IR) divergences. The results are expressed
in terms of 1-dimensional harmonic polylogarithms of maximum weight 4.


title: Pair production by a circularly polarized electromagnetic wave in plasma

abstract:
  We present the results of the calculation of the electron-positron pair
creation probability by the circularly polarized electromagnetic wave during
its propagation in underdense collisionless plasmas. The dependence of the
probability on the frequency and the amplitude of the pulse is studied in
detail.


title: Lectures on multiloop calculations

abstract:
  I discuss methods of calculation of propagator diagrams (massless, those of
Heavy Quark Effective Theory, and massive on-shell diagrams) up to 3 loops.
Integration-by-parts recurrence relations are used to reduce them to linear
combinations of basis integrals. Non-trivial basis integrals have to be
calculated by some other method, e.g., using Gegenbauer polynomial technique.
Many of them are expressed via hypergeometric functions; in the massless and
HQET cases, their indices tend to integers at $\epsilon\to0$. I discuss the
algorithm of their expansion in $\epsilon$, in terms of multiple $\zeta$
values. These lectures were given at Calc-03 school, Dubna, 14--20 June 2003.


title: Semileptonic Hyperon Decays

abstract:
  We review the status of hyperon semileptonic decays. The central issue is the
$V_{us}$ element of the CKM matrix, where we obtain $V_{us}=0.2250 (27)$. This
value is of similar precision, but higher, than the one derived from $K_{l3}$,
and in better agreement with the unitarity requirement,
$|V_{ud}|^2+|V_{us}|^2+|V_{ub}|^2=1$. We find that the Cabibbo model gives an
excellent fit of the existing form factor data on baryon beta decays ($\chi^{2}
= 2.96$ for 3 degrees of freedom) with $F + D = 1.2670 \pm 0.0030$, $F - D =
-0.341 \pm 0.016$, and no indication of flavour-SU(3)-breaking effects. We
indicate the need of more experimental and theoretical work, both on hyperon
beta decays and on $K_{l3}$ decays.


title:
Models of quintessence coupled to the electromagnetic field and the
  cosmological evolution of alpha

abstract:
  We study the change of the effective fine structure constant in the
cosmological models of a scalar field with a non-vanishing coupling to the
electromagnetic field. Combining cosmological data and terrestrial observations
we place empirical constraints on the size of the possible coupling and explore
a large class of models that exhibit tracking behavior. The change of the fine
structure constant implied by the quasar absorption spectra together with the
requirement of tracking behavior impose a lower bound of the size of this
coupling. Furthermore, the transition to the quintessence regime implies a
narrow window for this coupling around $10^{-5}$ in units of the inverse Planck
mass. We also propose a non-minimal coupling between electromagnetism and
quintessence which has the effect of leading only to changes of alpha
determined from atomic physics phenomena, but leaving no observable
consequences through nuclear physics effects. In doing so we are able to
reconcile the claimed cosmological evidence for a changing fine structure
constant with the tight constraints emerging from the Oklo natural nuclear
reactor.


title:
The mesons and baryons production in nucleus-nucleus collisions at SPS
  and RHIC energies and quark-gluon plasma

abstract:
  We use quasiparticle description of deconfined matter in nuclear collisions
at finite temperature and chemical potential. We assume that evolution of
expanding system is isentropic. Using theoretical formulas and experimental
meaning for the average multiplicity of charged and neutral particles and also
of net nucleons ($N-\bar{N}$) per unit central rapidity, we calculate the
initial temperature $T_0$, and the volume $V_0$ for the collisions of heavy
nuclei ($Pb+Pb$ and $Au+Au$) at SPS and RHIC energies. At calculations we use
the conservation of entropy and of number net nucleons in initial plasma stage
and on the stage of phase transition at temperature $T_c$, where we take into
account the phase of constituent quarks $m_q$ and $m_s$. The spectra of baryons
and mesons are calculated at temperature of thermal freeze-out $T_f = 120$ MeV.
The quantitative characteristic of these spectra (for example, the
normalization for baryons and mesons) are determined in the present model by
initial state - quark-gluon plasma.


title: Probabilistic Naturalness Measure for Dipole Moments due to New Physics

abstract:
  We introduce a probabilistic measure of naturalness (naturalness level) to
fix naturalness bounds quantitatively. It is applied to the anomalous magnetic
moments and the electric dipole moments due to new physics.


title:
Chiral symmetry breaking solutions for QCD in the truncated Coulomb
  gauge

abstract:
  In this paper we study the power-like confining potentials r^alpha. The
region of allowed alphas is identified, the mass-gap equation is constructed
for an arbitrary alpha and solved for several values of the latter, and the
vacuum energy and the chiral condensate are calculated. The question of replica
solutions to the mass-gap equation for such potentials is addressed and it is
demonstrated that the number of replicas is infinite for any alpha, as a
consequence of the peculiar behaviour of the quark self-energy in the infrared
domain.


title: Light Neutralinos and WIMP direct searches

abstract:
  The predictions of our previous analyses about possible low-mass (lower than
50 GeV) relic neutralinos are discussed in the light of the most recent results
from WIMP direct detection experiments. It is proved that these light
neutralinos are quite compatible with the new annual-modulation data of the
DAMA Collaboration; our theoretical predictions are also compared with the
upper bounds of the CDMS and EDELWEISS Collaborations.


title: Comover Enhancement Scenario for Quarkonium Production

abstract:
  The quarkonium data suggest a qualitatively new production mechanism,
enhancing the rate of the quarkonia produced in the fragmentation region of an
incoming coloured particle.


title: CHARYBDIS: A Black Hole Event Generator

abstract:
  CHARYBDIS is an event generator which simulates the production and decay of
miniature black holes at hadronic colliders as might be possible in certain
extra dimension models. It interfaces via the Les Houches accord to general
purpose Monte Carlo programs like HERWIG and PYTHIA which then perform the
parton evolution and hadronization. The event generator includes the
extra-dimensional `grey-body' effects as well as the change in the temperature
of the black hole as the decay progresses. Various options for modelling the
Planck-scale terminal decay are provided.


title:
Particle abundances and spectra in the hydrodynamical description of
  relativistic nuclear collisions with light projectiles

abstract:
  We show that a hydrodynamical model with continuous particle emission instead
of sudden freeze out may explain both the observed strange particle and pion
abundances and transverse mass spectra for light projectile at SPS energy. We
found that the observed enhancement of pion production corresponds, within the
context of continuous emission, to the maximal entropy production.


title:
T-violating triple product asymmetries in Lambda_b --> Lambda pi pi
  decay

abstract:
  We study Lambda_b --> Lambda pi pi. The branching fraction is predicted to be
about 4.38 x 10^{-6}%. Within the standard model, we compute T-odd triple
product asymmetries to be about 1.4, 4.3, 6.5 and 7.2% respectively due to
s_{Lambda_b}(s_Lambda) . (p_Lambda x p_pi) and p_Lambda (p_pi) . (s_Lambda x
s_{Lambda_b}).


title: Signals of New Physics using angular analysis in B -> V1 V2 decays

abstract:
  We show that an angular analysis of B -> V1 V2 decays yields numerous tests
for new physics in the decay amplitudes. Many of these new-physics observables
are nonzero even if the strong phase differences vanish. For certain
observables, neither time-dependent measurements nor tagging is necessary.
Should a signal for new physics be found, one can place a lower limit on the
size of the new-physics parameters, as well as bound its effect on the
measurement of the B^0--Bbar^0 mixing phase.


title: Determining weak phases using B->D^*V Decays

abstract:
  We describe how the angular analysis of vector-vector final states in B
decays provides theoretically clean techniques for determination of CP
violating phases. The quantity $\sin^2 (2\beta + \gamma)$ can be cleanly
obtained from the time dependent study of decays such as B_d(t)->D^{*\pm}
\rho^\mp, D^{*\pm} a_1^{\mp} etc. Similarly, one can use B_s(t)-> D_s^{*\pm}
K^{*\mp} to extract $\sin^2 \gamma$. A time independent study of the charged
decay mode B^\pm-> D^{*0}(\bar D^{*0}) K^{*\pm} can also be used to extract
gamma.


title: Heavy Meson Description with a Screened Potential

abstract:
  We perform a quark model calculation of the $b\bar{b}$ and $c\bar{c}$ spectra
from a screened funnel potential form suggested by unquenched lattice
calculations. A connection between the lattice screening parameter and an
effective gluon mass directly derived from QCD is established. Spin-spin energy
splittings, leptonic widths and radiative decays are also examined providing a
test for the description of the states.


title: Neutrinoless Double Beta Decay Constraints

abstract:
  A brief overview is given of theoretical analyses with neutrinoless double
beta decay experiments. Theoretical bounds on the ``observable'', <m>_betabeta,
are presented. By using experimental bounds on <m>_betabeta, allowed regions
are obtained on the m_l-cos{2theta_12} plane, where m_l stands for the lightest
neutrino mass. It is shown that Majorana neutrinos can be excluded by combining
possible results of future neutrinoless double beta decay and {}^3H beta decay
experiments. A possibility to constrain one of two Majorana phases is discussed
also.


title: Hidden sector axions: physics and cosmology

abstract:
  Embedding hidden sector supergravity models in the framework of string theory
leads to the appearance of axion-like degrees of freedom. Among them is the
model independent axion of heterotic string theory. It has a decay constant of
order of the Planck scale and could play the role of a quintessence field. In
models allowing for the required $\mu$ term in the TeV range, the hidden sector
dynamics leads to a vacuum energy of $(0.003 {\rm eV})^4$ via a multiple
see-saw effect. A solution to the strong CP-problem is provided by an
additional hidden sector pseudoscalar with properties that make it an
acceptable candidate for cold dark matter of the universe.


title:
Leptonic universality breaking in Upsilon decays as a probe of new
  physics

abstract:
  In this work we examine the possible existence of new physics beyond the
standard model which could modify the branching fractions of the leptonic
(mainly tauonic) decays of bottomonium vector resonances below the $B\bar{B}$
threshold. The decay width is factorized as the product of two pieces: a) the
probability of an intermediate pseudoscalar color-singlet $b\bar{b}$ state
(coupling to the dominant Fock state of the Upsilon via a magnetic dipole
transition) and a soft (undetected) photon; b) the annihilation width of the
$b\bar{b}$ pair into two leptons, mediated by a non-standard CP-odd Higgs boson
of mass about 10 GeV, introducing a quadratic dependence on the lepton mass in
the partial width. The process would be unwittingly ascribed to the $\Upsilon$
leptonic channel thereby (slightly) breaking lepton universality. A possible
mixing of the pseudoscalar Higgs and bottomonium resonances is also considered.
Finally, several experimental signatures to check out the validity of the
conjecture are discussed.


title: Photon-Photon and Electron-Photon Physics or Physics at Photon Collider

abstract:
  A (updated) summary of the Photon-Photon and Electron-Photon physics session
is presented.


title:
Energy partition in nonabelian gauge fields with thermodynamic
  interactions

abstract:
  The thermodynamic interaction at thermodynamic equilibrium in the free
fermion gas is alternatively described by the coupling of particles with a
scalar thermodynamic field which features a self-interaction. The gauge fields
in $SU_c(3)$ symmetry are investigated with thermodynamic interactions. Six
off-diagonal gluons acquire effective masses through the decolorization of
thermodynamic fields using the Higgs mechanism. Together with the rise of the
fermion mass in the thermal bath, this gives the partition of the thermodynamic
energy under the classical limit.


title:
Elastic and Resonance contributions to moments of the proton structure
  function F2

abstract:
  We discuss the role of nucleon and its excited state poles in the twist
expansion of the nucleon structure function moments. We find that the nucleon
pole contribution was overestimated in previous analyses by a factor of two.
Inclusion of this missing factor makes the duality appear for all moments at
least down to Q2=1 GeV2. For resonance poles the time reversal invariance
together with unitarity demand at least four of them in the forward Compton
scattering amplitude. These poles as well as the elastic pole can be propagated
separately through the standard Operator Product Expansion derivation for DIS.
This part of the amplitude gives a coherent, positive, higher twist
contribution, which can be singled out of the total and compared with the
remaining one given mostly by threshold effects. A comparison of the estimated
resonance contribution to the data on structure function moments allows to test
large-Q2 behavior of proton-resonance transition form-factors.


title: Impact of CP phases on stop and sbottom searches

abstract:
  We study the decays of top squarks (stop_{1,2}) and bottom squarks
(sbottom_{1,2}) in the Minimal Supersymmetric Standard Model (MSSM) with
complex parameters A_t, A_b, mu and M_1. We show that including the
corresponding phases substantially affects the branching ratios of stop_{1,2}
and sbottom_{1,2} decays in a large domain of the MSSM parameter space. We find
that the branching ratios can easily change by a factor of 2 and more when
varying the phases. This could have an important impact on the search for
stop_{1,2} and sbottom_{1,2} and the determination of the MSSM parameters at
future colliders.


title: Bounds on the mass of the b' quark, revisited

abstract:
  Recent results from the DELPHI collaboration led us to review the present
bounds on the b' quark mass. We use all available experimental data for m_b' >
96 GeV to constrain the b' quark mass as a function of the
Cabibbo-Kobayashi-Maskawa elements in a sequential four generations model. We
find that there is still room for a b' with a mass larger than 96 GeV.


title: Supersymmetry through CP violation in $H^\pm \to W^\pm h^0$

abstract:
  The CP violating asymmetry between the partial decay rates of $H^+ \to W^+
h^0$ and $H^- \to W^- h^0$ is calculated at one-loop level in MSSM with complex
parameters. The dependence on the phases of $A_\tau$ and $M_1$ is discussed.
Different values of $\tan \beta$ are considered. The asymmetry is up to the
order of $10^{-2} $.


title: A Truly Minimal Left-Right Symmetric Extension of the Standard Model

abstract:
  By invoking the existence of a general custodial O(2) symmetry, a minimal
Left-Right symmetric model based on the gauge group G=SU(2)L SU(2)R U(1)BL is
shown to require the existence of only two physical Higgs bosons. The lighter
Higgs is predicted to have a small mass which could be evaluated by standard
perturbation theory. The fermionic mass matrices are recovered by insertion of
ad hoc fermion-Higgs interactions. The model is shown to be undistinguishable
from the standard model at the currently reachable energies.


title: Signatures of TeV Scale Gravity in High Energy Collisions

abstract:
  In TeV scale unification models, gravity propagates in 4+d dimensions while
gauge and matter fields are confined to a four dimensional brane, with gravity
becoming strong at the TeV scale. For a such scenario, we study strong
gravitational interactions in a effective Schwarzschild geometry. Two regimes
appear. For large impact parameters, the ratio rho=(Rs/ro)1+d, (with Rs the
Schwarzschild radius and ro the closest approach to the black hole), is small
and the deflection angle is proportional to rho (like Rutherford-type
scattering).For small impact parameters, the deflection angle develops a
logarithmic singularity and becomes infinite for rho=rho crit= 2/(3+d). This
singularity is reflected into a strong enhancement of the backward scattering
(like a glory-type effect). We suggest a distinctive signature of black hole
formation in particle collisions at TeV energies, the observation of the
backward scattering events and its associated diffractive effects.


title: Charm Phenomenology for CKM Parameters

abstract:
  We review several key aspects of charm phenomenology which are important for
the general program of determination of matrix elements of the
Cabbibo-Kobayashi-Maskava (CKM) matrix. We argue that charm physics plays an
important role in reducing uncertainties in non-perturbative QCD parameters
whose values are required for understanding of underlying quark-level
processes. We also review the current status of searches for new physics in
mixing and CP violation in charmed mesons both at the currently operating and
proposed facilities.


title: Parametrizing the Neutrino Mixing Matrix

abstract:
  We propose parametrizations of the neutrino mixing matrix. We discuss several
Ansatzes: in some of them $V_{e3}=0$ but in others $V_{e3}$ typically ``comes
out'' to be of order $\simeq 0.05.$


title: The Road Ahead

abstract:
  I describe the surrounding landscape on the road to the CERN Large Hadron
Collider. I revisit the milestones of hadron-collider physics, and from them
draw lessons for the future. I recall the primary motivation for the journey -
understanding the mechanism of electroweak symmetry breaking - and speculate
that even greater discoveries may await us. I review the physics that we know
beyond the standard model - dark matter, dark energy, and neutrino masses - and
discuss the status of grand-unified theories. I list the reasons why the Higgs
boson is central to the standard model as well as to physics beyond the
standard model.


title: QCD Plasma Instabilities and Bottom-Up Thermalization

abstract:
  We study the role of QCD plasma instabilities in non-equilibrium quark-gluon
plasmas. First, we argue that such instabilities must drastically modify the
"bottom-up" thermalization scenario for heavy-ion collisions. Second, we
discuss conditions for the existence of instabilities in a more general context
than previously treated in the QCD literature. We also give a thorough
qualitative review of the origin of instabilities. We discuss some mechanisms
whereby the growth of plasma instabilities saturates. Finally, we solve
explicitly for instabilities and their growth rates for two extreme cases of
anisotropic non-equilibrium plasmas that can be treated relatively simply and
analytically: $f(\p) = F(p_\perp) \delta(p_z)$ and $f(\p) = F(p_z)
\delta^{(2)}(p_\perp)$, where $f(\p)$ is the distribution of particles in
momentum space.


title: High energy scattering in the Regge limit

abstract:
  This thesis comprises two investigations, both connected with the attempt to
understand Regge theory in the framework of QCD. The first is about how the
odderon, a Reggeon carrying no charge which is odd under charge conjugation,
couples to the proton. The second concerns unitarity corrections to the BFKL
equation which describes the pomeron, a Reggeon with the quantum numbers of the
vacuum.
  In the first part of this thesis, the odderon exchange contribution to
elastic proton-proton and proton-antiproton scattering is computed. A
geometrical transverse-space model of the proton is constructed to investigate
the influence of a possible diquark cluster in the proton on the odderon-proton
coupling. The average size of this cluster is determined by comparison with
experimental data. Furthermore, the validity of two odderon-proton impact
factors from the literature is tested.
  The second part consists in the derivation of four-pomeron vertices. These
vertices occur in the Generalised Leading Logarithmic Approximation used to
unitarise scattering amplitudes describing the exchange of a perturbative
pomeron. A number of basic functions of which such pomeron vertices are
composed is treated systematically in momentum and position space. Their
conformal transformation properties in impact parameter space are derived. The
vertices are expressed as a number of integrals and cast into the form of
conformally invariant four-point functions.


title:
Spin alignment of vector mesons in unpolarized hadron-hadron collisions
  at high energies

abstract:
  We argue that spin alignment of the vector mesons observed in unpolarized
hadron-hadron collisions is closely related to the single spin left-right
asymmetry observed in transversely polarized hadron-hadron collisions. We
present the numerical results obtained from the type of spin-correlation
imposed by the existence of the single-spin left-right asymmetries. We compare
the results with the available data and make predictions for future
experiments.


title: Chiral Transition in QCD and Scalar Correlations

abstract:
  We review recent developments in exploring possible precursory phenomena of
partial restoration of chiral symmetry in nuclear medium by examining the
spectral function in the scalar channel. We emphasize that the wave function
renormalization of the pion in the medium plays an essential role to induce the
decrease of the pion decay constant as the order parameter of chiral
transition. We also show that the $\sigma$ meson pole in the complex energy
plane moves toward the origin as chiral symmetry is restored in hot and/or
dense nuclear matter.


title: 'Naked' Crystals go Underground

abstract:
  On May 5, 2003 in the GRAN SASSO Underground Laboratory the first naked
high-purity Germanium detectors were installed successfully in liquid nitrogen
in the GENIUS-Test-Facility (GENIUS-TF). This is the first time ever that this
novel technique for extreme background reduction in searches for rare decays is
going to be tested under realistic background conditions.


title:
Status of Evidence for Neutrinoless Double Beta Decay, and the Future:
  GENIUS and GENIUS-TF

abstract:
  The first evidence for neutrinoless double beta decay has been observed in
the HEIDELBERG-MOSCOW experiment, which is the most sensitive double beta decay
experiment since ten years. This is the first evidence for lepton number
violation and proves that the neutrino is a Majorana particle. It further shows
that neutrino masses are degenerate. In addition it puts several stringent
constraints on other physics beyond the Standard Model. The result from the
HEIDELBERG-MOSCOW experiment is consistent with recent results from CMB
investigations, with high energy cosmic rays, with the result from the g-2
experiment and with recent theoretical work. It is indirectly supported by the
analysis of other Ge double beta experiments.
  The new project GENIUS will cover a wide range of the parameter space of
predictions of SUSY for neutralinos as cold dark matter. Further it has the
potential to be a real-time detector for low-energy ($pp$ and $^7$Be) solar
neutrinos.
  A GENIUS Test Facility has come into operation on May 5, 2003. This is the
first time that this novel technique for extreme background reduction in search
for rare decays is applied under the background conditions of an underground
laboratory.


title:
Probing the CP nature of the Higgs boson at linear colliders with tau
  spin correlations; the case of mixed scalar--pseudoscalar couplings

abstract:
  The prospects for the measurement of the pseudoscalar admixture in the
h-tau-tau coupling to a Standard Model Higgs boson of 120 GeV mass are
discussed in a quantitative manner e+ e- collisions of 350 GeV centre-of-mass
energy. Specific angular distributions in the h --> tau tau; tau --> rho nu
decay chain can be used to probe mixing angles of scalar--pseudoscalar
h-tau-tau couplings. In the discussion of the feasibility of the method,
assumptions on the properties of a future detector for an e+ e- linear collider
such as TESLA are used. The Standard Model Higgsstrahlung production process is
taken as an example. For the expected performance of a typical Linear Collider
set-up, the sensitivity of a measurement of the scalar--pseudoscalar mixing
angle turned out to be 6 degree. It will be straightforward to apply our
results to estimate the sensitivity of a measurement, in cases another scenario
of the Higgs boson sector (Standard Model or not) is chosen by nature. The
experimental error of the method is expected to be limited by the statistics.


title: Dilaton and Moduli Fields in D-term inflation

abstract:
  We investigate the possibility of $D$-term inflation within the framework of
type I string-inspired models. Although $D$-term inflation model has the
excellent property that it is free from the so-called $\eta$- problem, two
serious problems appear when we embed $D$-term inflation in string theory, the
magnitude of FI term and the rolling motion of the dilation. In the present
paper, we analyze the potential of $D$-term inflation in type I inspired models
and study the behavior of dilaton and twisted moduli fields. Adopting the
non-perturbative superpotential induced by gaugino condensation, the twisted
moduli can be stabilized. If the dilaton is in a certain range, it evolves very
slowly and does not run away to infinity. Thus $D$-term dominated vacuum energy
becomes available for driving inflation. By studying the density perturbation
generated by the inflation model, we derive the constraints on model parameters
and give some implications on $D$-term inflation in type I inspired models.


title:
Electroweak radiative effects in the single $W$-production at Tevatron
  and LHC

abstract:
  An alternative calculation of the lowest order electroweak radiative
corrections to the single W-boson production in hadron-hadron collision in the
framework of the quark parton model without any absorption of the collinear
quark singularity into the parton distributions is carried out. Numerical
analysis under Tevatron and LHC kinematic conditions is performed.


title:
Remarks on the recently observed B decays into $f_X(1300) K$ and $J/\psi
  K_X^*(1430)$

abstract:
  In light of the recent experimental results on decays $B^+ \to f_X(1300) K^+$
and $B^{\pm(0)} \to J/\psi K_X^{*\pm(0)}(1430)$ from Belle, we study the $B \to
P(V) S$ type decays, $B^{\pm(0)} \to f_0(1370) K^{\pm(0)}$ and $B^{\pm(0)} \to
J/\psi K_0^{*\pm(0)}(1430)$, in comparison with the $B \to P(V) T$ type decays,
$B^{\pm(0)} \to f_2(1270) K^{\pm(0)}$ and $B^{\pm(0)} \to J/\psi
K_2^{*\pm(0)}(1430)$. We calculate the BRs for these decays by using the form
factors obtained in the ISGW2 model [the improved version of the original
Isgur-Scora-Grinstein-Wise (ISGW) model], as well as the ISGW model for
comparison. The ratios of ${\cal B}(B \to P(V)S) / {\cal B}(B \to P(V)T)$ are
also presented.


title:
Quasi-particle Specific Heats for the Crystalline Color Superconducting
  Phase of QCD

abstract:
  We calculate the specific heats of quasi-particles of two-flavor QCD in its
crystalline phases for low temperature. We show that for the different
crystalline structures considered here there are gapless modes contributing
linearly in temperature to the specific heat. We evaluate also the phonon
contributions which are cubic in temperature. These features might be relevant
for compact stars with an inner shell in a color superconducting crystalline
phase.


title: The sigma-term form factor of the nucleon in the large-Nc limit

abstract:
  The scalar isoscalar form factor of the nucleon is calculated in the limit of
a large number of colours in the framework of the chiral quark-soliton model.
The calculation is based on an approximation justified by arguments from the
instanton model of the QCD vacuum, from which the chiral quark-soliton model
was derived. The simple parameter-free result reproduces all features of the
form factor observed in previous exact calculations in that model and in chiral
perturbation theory, and well agrees with the available phenomenological
information. The Feynman-Hellmann theorem is used to study the pion mass
dependence of the nucleon mass and a good agreement with lattice QCD results is
observed.


title: SU(3) Breaking in K and K* Distribution Amplitudes

abstract:
  We calculate the decay couplings and first two Gegenbauer moments of the
leading twist light-cone distribution amplitudes of K and K* from QCD sum
rules, including NLO perturbative effects.


title:
Higgs-Boson Mass Limits and Precise Measurements beyond the Standard
  Model

abstract:
  The triviality and vacuum stability bounds on the Higgs-boson mass ($\mh$)
were revisited in presence of weakly-coupled new interactions parameterized in
a model-independent way by effective operators of dimension 6. The constraints
from precision tests of the Standard Model were taken into account. It was
shown that for the scale of new physics in the region $\Lambda \simeq 2 \div 50
\tev$ the Standard Model triviality upper bound remains unmodified whereas it
is natural to expect that the lower bound derived from the requirement of
vacuum stability is substantially modified depending on the scale $\La$ and
strength of coefficients of effective operators. A natural generalization of
the standard triviality condition leads also to a substantial reduction of the
allowed region in the ($\Lambda,\mh$) space.


title:
Natural and model-independent conditions for evading the limits on the
  scale of new physics

abstract:
  I argue that the limits on this quantity obtained using model-independent
parameterizations contain an tacit assumption that could be invalidated under a
variety of situations. As a specific example, existing limits on $\Lambda $
would be decreased by at least an order of magnitude if the underlying physics
has a symmetry under which all \sm particles are singlets but none of the heavy
excitations are. In this case current experiments would see no clear
indications of new physics using precision measurements while future colliders
capable of directly producing the heavy particles would only occur in pairs.


title: Phenomenology of the Littlest Higgs model

abstract:
  The little Higgs idea is a new way to solve the little hierarchy problem by
protecting the Higgs mass from quadratically divergent one-loop corrections. In
this talk I describe the phenomenology of one particular realization of the
little Higgs idea: the "Littlest Higgs" model.


title: Diquarks and Exotic Spectroscopy

abstract:
  We propose that the recently discovered \Theta baryon is a bound state of
four quarks and an antiquark, containing two highly correlated ud-pairs. If so,
the \Theta baryon has positive parity, and it lies in an near-ideally mixed
SU(3)_{f} \mathbf{\bar{10}}_{f} oplus \mathbf{8}_{f}. The Roper resonance and
the P_{11}(1710) fit naturally into this classification. We predict an isospin
3/2 multiplet of \Xi's (S=-2) with J^{\Pi}=\half^{+} around 1750 MeV. A search
for manifestly exotic \Xi^{+} and \Xi^{--} in this mass range could provide a
sharp test of our proposal. We predict that charm and bottom analogues of the
\Theta baryon are stable against strong decays.


title: SUSY Signatures in ATLAS at LHC

abstract:
  This talk summarizes work by the ATLAS Collaboration at the CERN Large Hadron
Collider on the search SUSY particles and Higgs bosons and on possible
measurements of their properties.


title: The anticharmed exotic baryon Theta_c and its relatives

abstract:
  Motivated by the recent discovery of the exotic S=+1 narrow baryon resonance
Theta^+ at 1540 MeV, with quark content {uudd sbar}, we conjecture the
existence of its anti-charmed analogue Theta_c, with quark content {uudd cbar},
and compute its likely properties. We rely on the recently constructed model of
a novel kind of a pentaquark with an unusual color structure which provides a
good approximation to the Theta^+ mass. We expect that Theta_c is an isosinglet
with J^P=1/2^+ and estimate its mass at 2985 \pm 50 MeV. We also discuss
another possible exotic baryon resonance containing heavy quarks, the
Theta_b^+, a {uudd bbar} state, and estimate m_{Theta_b^+}=6398 \pm 50 MeV.
These states should appear as unexpectedly narrow peaks in D^-p, Dbar^0 n, B^0
p and B^+ n mass distributions.


title: CP asymmetry in flavour-specific B decays beyond leading logarithms

abstract:
  We compute next-to-leading order QCD corrections to the CP asymmetry a_{fs} =
Im(Gamma_{12}/M_{12}) in flavour-specific B_{d,s} decays such as B_d->X l nu or
B_s->D^-_s pi^+. The corrections reduce the uncertainties associated with the
choice of the renormalization scheme for the quark masses significantly. In the
Standard Model we predict a^d_{fs} = -(5.0 +- 1.1)*10^{-4}. As a by-product we
also obtain the width difference in the B_d system at next-to-leading order in
QCD.


title: Understanding Pentaquark States in QCD

abstract:
  We estimate the mass of the pentaquark state with QCD sum rules and find that
pentaquark states with isospin $I=0, 1, 2$ lie close to each other around
$(1.55\pm 0.15)$ GeV. The experimentally observed baryon resonance $\Theta^+
(1540)$ with $S=+1$ can be consistently identified as a pentaquark state if its
$J^P={1\over 2}^-$. Such a state is expected in QCD. If its parity is positive,
this pentaquark state is really exotic. Now the outstanding issue is to
determine its quantum numbers experimentally.


title:
Hadronic Higgs Production and Decay in Supersymmetry at Next-to-Leading
  Order

abstract:
  Supersymmetric QCD corrections to the gluonic production and decay rate of a
CP-even Higgs boson are evaluated at next-to-leading order. To this aim, we
derive an effective Lagrangian for the gluon-Higgs coupling. We show that a
consistent calculation requires the inclusion of gluino effects, in contrast to
what has been done previously. The supersymmetric corrections to the
gluon-Higgs coupling lead to a modification of the next-to-leading order
K-factor for the Higgs production rate at the LHC by less than five percent.


title: Neutrino Mass Matrix with Approximate Flavor Symmetry

abstract:
  Phenomenological implications of neutrino oscillations implied by recent
experimental data on pattern of neutrino mass matrix are disscussed. It is
shown that it is possible to have a neutrino mass matrix which shows
approximate flavor symmetry; the neutrino mass differences arise from flavor
violation in off-diagonal Yukawa couplings. Two modest extensions of the
standard model, which can embed the resulting neutrino mass matix have also
been discussed.


title:
Self-energy-part resummed quark and gluon propagators in a
  spin-polarized quark matter and generalized Boltzmann equations

abstract:
  We construct perturbative frameworks for studying nonequilibrium
spin-polarized quark matter. We employ the closed-time-path formalism and use
the gradient approximation in the derivative expansion. After constructing
self-energy-part resummed quark and gluon propagators, we formulate two kind of
mutually equivalent perturbative frameworks: The first one is formulated on the
basis of the initial-particle distribution function, and the second one is
formulated on the basis of `` physical''-particle distribution function. In the
course of construction of the second framework, the generalized Boltzmann
equations and their relatives {\em directly} come out, which describe the
evolution of the system. The frameworks are relevant to the study of a magnetic
character of quark matters, e.g., possible quark stars.


title: On formation of domain wall lattices

abstract:
  We study the formation of domain walls in a phase transition in which an
S_5\times Z_2 symmetry is spontaneously broken to S_3\times S_2. In one compact
spatial dimension we observe the formation of a stable domain wall lattice. In
two spatial dimensions we find that the walls form a network with junctions,
there being six walls to every junction. The network of domain walls evolves so
that junctions annihilate anti-junctions. The final state of the evolution
depends on the relative dimensions of the simulation domain. In particular we
never observe the formation of a stable lattice of domain walls for the case of
a square domain but we do observe a lattice if one dimension is somewhat
smaller than the other. During the evolution, the total wall length in the
network decays with time as t^{-0.71}, as opposed to the usual t^{-1} scaling
typical of regular Z_2 networks.


title: Updated Collider Bounds on the Parameters of Dynamical Torsion

abstract:
  We constrain the parameters of dynamical torsion, namely, the torsion-fermion
coupling and the torsion mass, by making a careful analysis of current LEP-2
data at several energies, as well as CDF and D0 data from Run-I of the
Tevatron. We find that measurements of the forward-backward asymmetry in the
e+- e- -> mu+- mu- channel at LEP-2 produce the most restrictive bounds over
most of the parameter space,though other measurements, too, have a significant
role to play. Our results considerably improve the existing constraints on
models with dynamical torsion.


title:
Leptogenesis: a Link between the Matter-Antimatter Asymmetry and
  Neutrino Physics

abstract:
  We review the experimental evidence for a net baryon density in cosmology,
and the theoretical mechanism for producing it, called leptogenesis, which
relies on the creation of a lepton asymmetry at an intermediate step. The
naturality of this mechanism and its possible relations with neutrino
oscillations are outlined.