title: Thoughts on CP Violation

abstract:
  The necessary complex structures needed for CP violation are not easy to
generate and, indeed, CP can be a symmetry in higher dimensional theories. In
4-dimensions CP violation argues for the existence of a scalar sector and, in
its simplest manifestation, leads to the CKM model. Further CP violating
phases, from an extended scalar sector, are constrained by the requirement of
having no FCNC. Although new CP violating phases are expected in SUSY
extensions of the SM, the good agreement of data with the CKM model only
provides bounds on these phases. Baryogenesis via leptogenesis requires the
presence of CP violating phases in the neutrino sector. However, the CP phases
likely to be eventually meausured experimentally are not necessarily directly
connected to the ones which drive the leptogenesis.


title:
Infrared Sensitivity in Damping Rate for Very Soft Moving Fermions in
  Finite Temperature QED

abstract:
  We calculate the fermion damping rate to second order in powers of the
external momentum $p$ in the context of QED at finite temperature using the
hard-thermal-loop (HTL) summation scheme. We find that the coefficient of order
$p^{2}$ is divergent in the infrared whereas the two others are finite. This
result suggests that the htl-based pertubation is infrared sensitive at
next-to-leading order.


title: Pauli-blocking Effect in a Quark Model

abstract:
  Pauli-Blocking effect on the kinetic term is investigated by employing the
quark cluster model. The effect can be understood by the change of the degrees
of the mixing between the incoming wave and the 0$\ell$ state of the
inter-cluster wave function, which can be expressed by a potential which is
highly nonlocal. We look into the properties of this effect by comparing
equivalent local potentials. In the channel where the Pauli-blocking effect is
small, the on-shell equivalent local potential simulates the nonlocal potential
well even for the off-shell behavior. On the other hand, the off-shell behavior
is very different from the original one where the effect is large. This
off-shell behavior, however, can well be simulated by considering the nonlocal
matrix elements only between the $0s$ state and the other states. The energy
dependent potentials are also constructed and found to be helpful to understand
the energy dependence of the effect.


title:
Next-to-leading Corrections to the Higgs Boson Transverse Momentum
  Spectrum in Gluon Fusion

abstract:
  We present a fully analytic calculation of the Higgs boson transverse
momentum and rapidity distributions, for nonzero Higgs $p_\perp$, at
next-to-leading order in the infinite-top-mass approximation. We separate the
cross section into a part that contains the dominant soft, virtual, collinear,
and small-$p_\perp$-enhanced contributions, and the remainder, which is
organized by the contributions due to different parton helicities. We use this
cross section to investigate analytically the small-$p_\perp$ limit and compare
with the expectation from the resummation of large logarithms of the type
$\ln{m_H/p_\perp}$. We also compute numerically the cross section at moderate
$p_\perp$ where a fixed-order calculation is reliable. We find a $K$-factor
that varies from $\approx1.6-1.8$, and a reduction in the scale dependence, as
compared to leading order. Our analysis suggests that the contribution of
current parton distributions to the total uncertainty on this cross section at
the LHC is probably less than that due to uncalculated higher orders.


title: Scalar-isoscalar excitation in dense quark matter

abstract:
  We study the spectrum of scalar-isoscalar excitations in the color-flavor
locked phase of dense quark matter. The sigma meson in this phase appears as a
four-quark state (of diquark and anti-diquark) with a well-defined mass and
extremely small width, as a consequence of it's small coupling to two pions.
The quark particle/hole degrees of freedom also contribute significantly to the
correlator just above the threshold 2\Delta where \Delta is the superconducting
gap.


title:
The Radiative Leptonic Decays D^0 -> e^+ e^- gamma, mu^+ mu^- gamma in
  the Standard Model and Beyond

abstract:
  We present a calculation of the rare decay modes D^0 -> e^+ e^- gamma and D^0
-> mu^+ mu^- gamma in the framework of Standard Model. For the short distance
part, we have derived QCD corrections to the Wilson coefficients involved,
including C_9. The latter is found to be strongly suppressed by the
corrections, leading to diminished values for the c -> u l^+l^- branching
ratios in the 10^(-10) range. Within SM the exclusive decays are dominated by
long distance effects. Nonresonant contributions are estimated using heavy
quark and chiral symmetries to be at the level of 10%, compared to the
contributions arising from D^0-> V gamma->l^+ l^- gamma, with V=rho, omega,
phi. The total SM branching ratio is predicted to be in the range (1-3) x
10^(-9). We also consider contributions coming from MSSM with and without R
parity conservation. Effects from MSSM are significant only for the R-parity
violating case. Such contributions enhance the branching ratio D^0-> mu^+ mu^-
gamma to 0.5 x 10^(-7), based on appropriately allowed values for C_9 and
C_{10}. This selects D^0->mu^+ mu^- gamma as a possible probe of new physics.


title: Investigating Lorentz and CPT Symmetry with Antihydrogen

abstract:
  This talk discusses theoretical aspects of tests of CPT and Lorentz Symmetry
that will in principle be possible with trapped antihydrogen. The framework is
the standard-model extension, which admits minuscule violations of CPT and
Lorentz symmetry in a general manner without giving up other features of the
standard model of particle physics. Spectroscopic transitions in hydrogen and
antihydrogen that exhibit leading-order effects are identified. Such
comparisons of spectral frequencies in antimatter with the corresponding
frequencies in regular matter will bound parameter combinations that are not
accessible with regular-matter atoms alone.


title: Purely Leptonic B decays at High Luminosity e+e- B factories

abstract:
  High Luminosity upgrades of the KEK-B collider are being discussed. We
consider the role of the purely leptonic decays B^\pm -> l^\pm nu and B^0 ->
l+l- in motivating such an upgrade. These decays are very sensitive to R parity
violating extensions of the MSSM, and we show that future runs of the KEK-B
factory can be competitive with high energy colliders for probing such models.


title:
Could the process of neutrino photoproduction on nuclei, stimulated by a
  strong magnetic field, compete with URCA processes?

abstract:
  The recent studies is reported of the neutrino photoproduction on nuclei,
gamma + Ze -> Ze + gamma + nu + anti-nu, in a strong magnetic field. It is
shown that the catalyzing influence of the field on the process decreases
essentially because of the modification of the photon dispersion properties in
a strong magnetic field. Therefore, at any field magnitude, neutrino
photoproduction cannot compete with the URCA processes. This conclusion
contradicts a recent statement in the literature.


title:
Distribution of valence quarks in hadrons in QCD: theoretical method of
  calculations

abstract:
  The general method for calculation of valence quark distributions in hadrons
at intermediate $x$ is presented. The imaginary part of virtual photon forward
scattering amplitude on quark current with hadron quantum number is considered
in the case, when initial and final virtualities of the current $p^2_1$ and
$p^2_2$ are different, negative and large: $\mid p^2_1\mid, \mid p^2_2\mid\gg
R^{-2}_c$, where $R_c$ is confinement radius. The operator product expansion
(OPE) in $p^2_1,p^2_2$ up to dimension 6 operators is performed. Double
dispersion representations in $p^2_1, p^2_2$ of the amplitude in terms of
physical states contributions are used. Equalling them to those calculated in
QCD by OPE the desired sum rules for quark distributions in mesons are found.
The double Borel transformations are applied to the sum rules, killing
non-diagonal transition terms, which deteriorated the accuracy in the previous
calculations of quark distributions in nucleon. Leading order perturbative
corrections are accounted. Valence quark distributions in pion, longitudinally
and transversally polarized $\rho$-mesons and proton are calculated at
intermediate $x$, $0.2 \la x \la 0.7$ and normalization points $Q^2 = 2-5
\~GeV^2$ with no fitting parameters. In cases of pion and proton the results
are in agreement with found correspondingly from the data on the Drell-Yan
process and deep inelastic scattering. Valence quark distributions in
transversally and longitudinally polarized $\rho$-mesons are essentially
different one from another and also differ from those in pion.


title: A precise determination of the charm quark's mass in quenched QCD

abstract:
  We present a lattice determination of the charm quark's mass, using the mass
of the D_s meson as experimental input. All errors are under control with the
exception of the quenched approximation. Setting the scale with F_K=160 MeV,
our final result for the renormalization group invariant (RGI) quark mass is
M_c = 1.654(45) GeV, which translates to m_c(m_c) =1.301(34) GeV for the
running mass in the MSbar scheme. A 6 percent increase of the RGI quark mass is
observed when the scale is set by the nucleon mass. This is a typical quenched
scale ambiguity, which is reduced to about 3 percent for m_c(m_c), and to 4
percent for the mass ratio M_c/M_s. In contrast, the mass splitting
m(Dstar_s)-m(D_s) changes from 117(11) MeV to 94(11) MeV, which is
significantly smaller than the experimental value of 144 MeV.


title: Leptogenesis and rescattering in supersymmetric models

abstract:
  The observed baryon asymmetry of the Universe can be due to the $B-L$
violating decay of heavy right handed (s)neutrinos. The amount of the asymmetry
depends crucially on their number density. If the (s)neutrinos are generated
thermally, in supersymmetric models there is limited parameter space leading to
enough baryons. For this reason, several alternative mechanisms have been
proposed. We discuss the nonperturbative production of sneutrino quanta by a
direct coupling to the inflaton. This production dominates over the
corresponding creation of neutrinos, and it can easily (i.e. even for a rather
small inflaton-sneutrino coupling) lead to a sufficient baryon asymmetry. We
then study the amplification of MSSM degrees of freedom, via their coupling to
the sneutrinos, during the rescattering phase which follows the nonperturbative
production. This process, which mainly influences the (MSSM) $D-$flat
directions, is very efficient as long as the sneutrinos quanta are in the
relativistic regime. The rapid amplification of the light degrees of freedom
may potentially lead to a gravitino problem. We estimate the gravitino
production by means of a perturbative calculation, discussing the regime in
which we expect it to be reliable.


title: B ->\eta_c K(\eta_c^\prime K) decays in QCD factorization

abstract:
  We study the exclusive decays of $B$ meson into pseudoscalar charmonium
states $\eta_c$ and $\eta_c^\prime$ within the QCD factorization approach and
find that the nonfactorizable corrections to naive factorization are infrared
safe at leading-twist order. The spectator interactions arising from the kaon
twist-3 effects are formally power-suppressed but chirally and logarithmically
enhanced. The theoretical decay rates are too small to accommodate the
experimental data. On the other hand, we compare the theoretical calculations
for $J/\psi, \psi^\prime$, and $\eta_c, \eta_c^\prime$, and find that the
predicted relative decay rates of these four states are approximately
compatible with experimental data.


title: Calculation of Hadronic Excitations of the Quark-Gluon Plasma

abstract:
  We present calculations of the spectral functions of various hadronic current
correlators at finite temperature, making use of the Nambu--Jona-Lasinio (NJL)
model and the real-time finite-temperature formalism. We study the
scalar-isoscalar correlation function in a SU(3)-flavor model, as well as the
pseudoscalar and vector correlation functions. We relate our analysis to our
recent calculations of the properties of mesons for $T<T_c$, which made use of
a generalized NJL model that includes a covariant model of confinement. Here,
we exhibit values of the spectral functions for a range of values of $T>T_c$,
where it is possible to neglect the effects of confinement. We find important
excitations in the scalar sector corresponding to what are predominately
singlet and octet states. The singlet state, which is at 247 MeV at $T=1.2
T_c$, evolves from the $f_0(980)$ which has an energy of about 400 MeV before
it disappears from the spectrum of bound states for $T>0.95 T_c$. The octet
state seen at $T=1.2 T_c$, which has a mass of about 860 MeV, evolves from a
nodeless state that has an energy of about 1470 MeV at T=0 in our model. As
noted in the literature, these modes may play an important role in the cooling
and hadronization of quark-gluon droplets excited in heavy-ion collisions. We
note that the real-time formalism has some advantages over the imaginary-time
formalism, since the real-time formalism provides information concerning the
widths of the excitations calculated using our model.


title: Neutrino Propagation in a Weakly Magnetized Medium

abstract:
  Neutrino-photon processes, forbidden in vacuum, can take place in the
presence of a thermal medium and/or an external electro-magnetic field,
mediated by the corresponding charged leptons (real or virtual). Such
interactions affect the propagation of neutrinos through a magnetized plasma.
We investigate the neutrino-photon absorptive processes, at the one-loop level,
for massless neutrinos in a weakly magnetized plasma. We find that there is no
correction to the absorptive part of the axial-vector--vector amplitude due to
the presence of a magnetic field to the linear order in the field strength.


title: QCD tests for Quasilocal Quark Model

abstract:
  We perform the QCD testing of the Quasilocal Quark Model (QQM) based on
Operator Product Expansion (OPE). The quark current correlators calculated in
framework of the model, are compared to their OPE in QCD at intermediate
energies. The QQM provides a reasonable resolution for mass spectrum of parity
doublers in scalar and vector meson channels.


title: Estimates of the subthreshold production of charm

abstract:
  Charm photoproduction rates off nuclei below the nucleon threshold are
estimated using the phenomenologically known structure functions both for $x<1$
and $x>1$. The rates rapidly fall from values of the order 1 nb at the
threshold to values of the order 1 pb at 6 GeV for Pb target.


title: Elastic Scattering and Direct Detection of Kaluza-Klein Dark Matter

abstract:
  Recently a new dark matter candidate has been proposed as a consequence of
universal compact extra dimensions. It was found that to account for
cosmological observations, the masses of the first Kaluza-Klein modes (and thus
the approximate size of the extra dimension) should be in the range 600-1200
GeV when the lightest Kaluza-Klein particle (LKP) corresponds to the
hypercharge boson and in the range 1 - 1.8 TeV when it corresponds to a
neutrino. In this article, we compute the elastic scattering cross sections
between Kaluza-Klein dark matter and nuclei both when the lightest Kaluza-Klein
particle is a KK mode of a weak gauge boson, and when it is a neutrino. We
include nuclear form factor effects which are important to take into account
due to the large LKP masses favored by estimates of the relic density. We
present both differential and integrated rates for present and proposed
Germanium, NaI and Xenon detectors. Observable rates at current detectors are
typically less than one event per year, but the next generation of detectors
can probe a significant fraction of the relevant parameter space.


title: Extra Dimensions, Isosinglet Charged Leptons and Neutrino Factories

abstract:
  Isosinglet fermions naturally arise in a variety of extensions of the
Standard Model, in particular in models with extra dimensions. In this paper,
we study the effect of the addition of a new isosinglet charged lepton to the
standard spectrum, with special emphasis on implications for neutrino
asymmetries to be measured at future neutrino factories. Lepton flavour
violation in neutral current and lepton universality constraints are
extensively discussed. We show that new physics effects in $\nu_e-\nu_{\mu}$ CP
asymmetries are significantly enhanced due to leptonic maximal mixings but
still too small to give a signature at future neutrino factories. A signal for
CP asymmetries in $\nu_{\mu}-\nu_{\tau}$ channel due to new physics could be
observed at $1-3 \sigma$ if lepton flavour violating $\tau$ decays are seen in
a very close future in B-factories like BELLE experiment.


title:
Threshold effects and Planck scale Lorentz violation: combined
  constraints from high energy astrophysics

abstract:
  Recent work has shown that dispersion relations with Planck scale Lorentz
violation can produce observable effects at energies many orders of magnitude
below the Planck energy M. This opens a window on physics that may reveal
quantum gravity phenomena. It has already constrained the possibility of Planck
scale Lorentz violation, which is suggested by some approaches to quantum
gravity. In this work we carry out a systematic analysis of reaction
thresholds, allowing unequal deformation parameters for different particle
dispersion relations. The thresholds are found to have some unusual properties
compared with standard ones, such as asymmetric momenta for pair creation and
upper thresholds. The results are used together with high energy observational
data to determine combined constraints. We focus on the case of photons and
electrons, using vacuum Cerenkov, photon decay, and photon annihilation
processes to determine order unity constraints on the parameters controlling
O(E/M) Lorentz violation. Interesting constraints for protons (with photons or
pions) are obtained even at O((E/M)^2), using the absence of vacuum Cerenkov
and the observed GZK cutoff for ultra high energy cosmic rays. A strong
Cerenkov limit using atmospheric PeV neutrinos is possible for O(E/M)
deformations provided the rate is high enough. If detected, ultra high energy
cosmological neutrinos might yield limits at or even beyond O((E/M)^2).


title: Exclusive Nonleptonic B Decays from QCD Light-Cone Sum Rules

abstract:
  We are going to review recent advances in the theory of exclusive nonleptonic
B decays. The emphasis is going to be on the factorization hypothesis and the
role of nonfactorizable contributions for nonleptonic B decays. In particular,
we will discuss in more detail calculations of nonfactorizable contributions in
the QCD light-cone sum rule approach and their implications to the $B \to \pi
\pi$ and $B \to J/\psi K$ decays.


title:
Indirect detection of a subdominant density component of cold dark
  matter

abstract:
  We examine the detectability through indirect means of weakly interacting
dark matter candidates that may constitute not all but only a subdominant
component of galactic cold dark matter. We show that the possibility of
indirect detection of neutralinos from their annihilations in the Earth and Sun
is not severely hampered by decreasing neutralino relic density. Upward-going
muon fluxes in underground detectors from neutralino annihilations in the Sun
can remain above the threshold of detectability of 10 muons/km^2/yr for
neutralinos composing 1% or more of the halo dark matter. Similarly, signals
from neutralino annihilations in the Earth can also remain high for neutralino
densities of 1% of the halo and actually would only be observable close to this
low density for neutralinos lighter than 150 GeV. We also show that there are
many models which simultaneously have high direct and indirect detection rates
making some model discrimination possible if a signal is seen in any of the
current dark matter searches.


title: What Can Be Learned with a Lead-Based Supernova-Neutrino Detector?

abstract:
  We examine the prospects for using lead as a supernova-neutrino detector by
considering the spectrum of electrons produced, and the number of one- and
two-neutron events. We show that the electron energy spectrum from
charged-current reactions can be used to extract information about the
high-temperature component of the neutrino spectrum. Some degree of electron
neutrino oscillation is expected in the supernova envelope. We examine the
prospects for untangling the signatures of various oscillation scenarios,
including, e.g. normal or inverted hierarchies, and different values for the
small mixing angle, theta_13.


title:
Electric Charge Screening Effect in Single-W Production with the KoralW
  Monte Carlo

abstract:
  Any Monte Carlo event generator in which only initial state radiation (ISR)
is implemented, or ISR is simulated independently of the final state radiation
(FSR), may feature too many photons with large transverse momenta, which deform
the topology of events and result in too strong an overall energy loss due to
ISR. This overproduction of ISR photons happens in the presence of the final
state particle close to the beam particle of the same electric charge. It is
often said that the lack of the electric charge screening effect between ISR
and FSR is responsible for the above pathology in ISR. We present an elegant
approximate method of curing the above problem, without actually reinstalling
FSR. The method provides theoretical predictions of modest precision: < 2%. It
is, however, sufficient for the current 1W data analysis at the LEP2 collider.
Contrary to alternative methods implemented in other MC programs, our method
works for the ISR multiphotons with finite p_T. Although this method is not an
exact implementation of the complete/exact ISR, FSR and their interference, it
is very closely modelled on it. We present a variety of numerical results
obtained with the newest version of the KoralW Monte Carlo, in which this
method is already implemented.


title:
Gluon production in the Color Glass Condensate model of collisions of
  ultrarelativistic finite nuclei

abstract:
  We extend previous work on high energy nuclear collisions in the Color Glass
Condensate model to study collisions of finite ultrarelativistic nuclei. The
changes implemented include a) imposition of color neutrality at the nucleon
level and b) realistic nuclear matter distributions of finite nuclei.
  The saturation scale characterizing the fields of color charge is explicitly
position dependent, $\Lambda_s=\Lambda_s(x_T)$. We compute gluon distributions
both before and after the collisions. The gluon distribution in the nuclear
wavefunction before the collision is significantly suppressed below the
saturation scale when compared to the simple McLerran-Venugopalan model
prediction, while the behavior at large momentum $p_T\gg \Lambda_s$ remains
unchanged. We study the centrality dependence of produced gluons and compare it
to the centrality dependence of charged hadrons exhibited by the RHIC data. We
demonstrate the geometrical scaling property of the initial gluon transverse
momentum distributions for different centralities. Classical Yang-Mills results
for $p_T < \Lambda_s$ are simply matched to perturbative QCD computations for
$p_T > \Lambda_s$-the resulting energy per particle is significantly lower than
the purely classical estimates. Our results for nuclear collisions can be used
as initial conditions for quantitative studies of the further evolution and
possible equilibration of hot and dense gluonic matter produced in heavy ion
collisions. Finally, we study $pA$ collisions within the classical framework.
Our results agree well with previously derived analytical results in the
appropriate kinematical regions.


title: Spectral functions in the sigma-channel near the critical end point

abstract:
  Spectral functions in the $\sigma$-channel are investigated near the chiral
critical end point (CEP), that is, the point where the chiral phase transition
ceases to be first-ordered in the $(\mu,T)$-plane of the QCD phase diagram. At
that point the $\sigma$ meson becomes massless in spite of explicit breaking of
the chiral symmetry. It is expected that experimental signatures peculiar to
CEP can be observed through spectral changes in the presence of abnormally
light $\sigma$ mesons. As a candidate, the invariant-mass spectrum for diphoton
emission is estimated with the chiral quark model incorporated. The results
show the characteristic shape with a peak in the low energy region, which may
serve as a signal for CEP. However, we find that the diphoton multiplicity is
highly suppressed by infrared behaviors of the $\sigma$ meson. Experimentally,
in such a low energy region below the threshold of two pions, photons from
$\pi^0\to2\gamma$ are major sources of the background for the signal.


title: Color-flow decomposition of QCD amplitudes

abstract:
  We introduce a new color decomposition for multi-parton amplitudes in QCD,
free of fundamental-representation matrices and structure constants. This
decomposition has a physical interpretation in terms of the flow of color,
which makes it ideal for merging with shower Monte-Carlo programs. The
color-flow decomposition allows for very efficient evaluation of amplitudes
with many quarks and gluons, many times faster than the standard color
decomposition based on fundamental-representation matrices. This will increase
the speed of event generators for multi-jet processes, which are the principal
backgrounds to signals of new physics at colliders.


title: Two-Body Cabibbo-Suppressed Charmed Meson Decays

abstract:
  Singly-Cabibbo-suppressed decays of charmed particles governed by the quark
subprocesses $c \to s u \bar s$ and $c \to d u \bar d$ are analyzed using a
flavor-topology approach, based on a previous analysis of the Cabibbo-favored
decays governed by $c \to s u \bar d$. Decays to $PP$ and $PV$, where $P$ is a
pseudoscalar meson and $V$ is a vector meson, are considered. We include
processes in which $\eta$ and $\eta '$ are produced.


title: Connecting Link Between Leptogenesis and Oscillations

abstract:
  It is shown how, in a class of models, the sign of the baryon number of the
universe can be related to CP violation in neutrino oscillation experiments.


title: What can we learn from a measurement of sin(2 beta + gamma)?

abstract:
  The constraints on the value of the CKM phase gamma that may be achieved by
prospective measurements of sin(2 beta) and sin(2 beta + gamma) are discussed.
Significant constraints require quite small errors, and may depend on
assumptions about strong phases. The measurement of sin(2 beta + gamma)
combined with other experiments could provide valuable limits on new physics in
Bd-Bdbar mixing.


title: Resummation of nuclear enhanced higher twist in the Drell Yan process

abstract:
  We investigate higher twist contributions to the transverse momentum
broadening of Drell Yan pairs in proton nucleus collisions. We revisit the
contribution of matrix elements of twist-4 and generalize this to matrix
elements of arbitrary twist. An estimate of the maximal nuclear broadening
effect is derived. A model for nuclear enhanced matrix elements of arbitrary
twist allows us to give the result of a resummation of all twists in closed
form. Subleading corrections to the maximal broadening are discussed
qualitatively.


title: New developments in nonperturbative QCD

abstract:
  Basic developments in the analytic study of the QCD vacuum structure and of
the QCD spectrum, including glueballs and hybrids are reviewed.


title: Detection Rates for Kaluza-Klein Dark Matter

abstract:
  We consider the lightest Kaluza-Klein particle at N=1 mode (LKP) of universal
extra dimension to be the candidate for Dark Matter and predict the detection
rates for such particles for Germenium and NaI detectors. We have also
calculated the nature of annual modulation for the signals in these two types
of detectors for LKP Dark Matter. The rates with different values of speed of
solar system in the Galactic rest frame are also evaluated.


title:
Mass and Scalar Cross-sections for Neutralino Dark Matter in Anomaly
  Mediated Supersymmetry Breaking Model

abstract:
  We have considered neutralino to be the lightest supersymmetric particle
(LSP) in the framework of minimal Anomaly Mediated Supersymmetric (mAMSB)
model. We have studied variation of neutralino mass with the supersymmetric
parameters. Considering these neutralinos to be the candidates for weakly
interacting massive particle (WIMP) or cold dark matter (CDM), we have
calculated the neutralino nucleon scalar cross-sections and compared them with
DAMA-NaI neutralino direct detection search results. From this study we observe
that the mAMSB model results cannot explain the allowed region in WIMP mass and
WIMP-nucleon scalar cross-section space obtained from annual modulation
signature in DAMA-NaI experiment.


title:
$A^{0}Z^{0}$ associated production at the Large Hadron Collider in the
  minimal supersymmetric standard model

abstract:
  We investigate in detail the $A^{0}Z^{0}$ associated production process $pp
\to A^0Z^0+X$ within the framework of the minimal supersymmetric standard model
(MSSM) at the CERN Large Hadron Collider (LHC), considering both contributions
from the Drell-Yan and gluon fusion subprocesses. We focus on the deviations
from the general two-Higgs-doublet model (2HDM) arising in the MSSM. We also
discuss the contributions of the two $A^{0}Z^{0}$ associated production
subprocesses in the MSSM at the LHC, and analyse the dependences of the total
cross section on neutral CP-odd Higgs boson mass $m_A$ and $\tan\beta$ in the
mSUGRA scenario. We find that the contribution from loop mediated gluon fusion
subprocess can be competitive with that from the Drell-Yan subprocess in some
parameter space.


title:
A texture of neutrino mass matrix in view of recent neutrino
  experimental results

abstract:
  In view of recent neutrino experimental results such as SNO, Super-Kamiokande
(SK), CHOOZ and neutrinoless double beta decay $(\beta\beta_{0\nu})$, we
consider a texture of neutrino mass matrix which contains three parameters in
order to explain those neutrino experimental results. We have first fitted
parameters in a model independent way with solar and atmospheric neutrino mass
squared differences and solar neutrino mixing angle which satisfy LMA solution.
The maximal value of atmospheric neutrino mixing angle comes out naturally in
the present texture. Most interestingly, fitted parameters of the neutrino mass
matrix considered here also marginally satisfy recent limit on effective
Majorana neutrino mass obtained from neutrinoless double beta decay experiment.
We further demonstrate an explicit model which gives rise to the texture
investigated by considering an $SU(2)_L\times U(1)_Y$ gauge group with two
extra real scalar singlets and discrete $Z_2\times Z_3$ symmetry. Majorana
neutrino masses are generated through higher dimensional operators at the scale
$M$. We have estimated the scales at which singlets get VEV's and M by
comparing with the best fitted results obtained in the present work.


title:
Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*)
  amplitudes

abstract:
  We show that t-channel unitarity constraints make it possible to obtain the
photon-photon cross sections from the photon-proton and proton-proton cross
sections, for Q2<150 GeV2. In order to do so, one must postulate the existence
of double-pole or triple-pole singularities in the complex j plane.


title:
Modular Invariance, Soft Breaking, $\mu$ and $\tan\beta$ in Superstring
  Models

abstract:
  We go beyond parameterizations of soft terms in superstring models and
investigate the dynamical assumptions that lead to the relative strength of the
dilaton {\it vs} the moduli contributions in the soft breaking. Specifically,
we discuss in some simple heterotic orbifold models sufficient conditions to
achieve dilaton dominance. Assuming self-dual points to be minima we find
multiple solutions to the trilinear and bilinear soft parameters $A_0$ and
$B_0$. We discuss the constraints on $\mu$ and $\tan\beta$ in superstring
models in the context of radiative breaking of the electroweak symmetry. We
show that string models prefer a small to a moderate value of $\tan\beta$, {\it
i.e}. $\tan\beta \leq 10$, and a value much larger than this requires a high
degree of fine tuning. Further, we show that for large $\tan\beta$ the
radiative electroweak symmetry breaking constraint leads to a value
$\alpha_{string}=g_{string}^2/4\pi$ which is typically an order of magnitude
smaller than implied by the LEP data and the heterotic superstring relation
$g_{string}=k_ig_i$, where $g_i$ is the gauge coupling constant for the gauge
group $G_i$ and $k_i$ is the corresponding Kac-Moody level in the class of
models considered. This situation can be overcome by another fine tuned
cancellation between the dilaton and the moduli contributions in the soft
parameters.


title: etab Decay into Two Photons

abstract:
  We discuss the theoretical predictions for the two photon decay width of the
pseudoscalar etab meson. Predictions from potential models are examined. It is
found that various models are in good agreement with each other. Results for
etab are also compared with those from Upsilon data through the NRQCD
procedure.


title: Canonical aspects of strangeness enhancement

abstract:
  Strangeness enhancement (SE) in heavy ion collisions can be understood in the
statistical model on the basis of canonical suppression. In this formulation,SE
is a consequence of the transition from canonical to the asymptotic grand
canonical limit and is predicted to be a decreasing function of collision
energy. This model predictions are consistent with the recent NA49 data on
$\Lambda$ enhancement at $p_{lab}=40, 80, 158$ GeV.


title: Glueball as a bound state in the self-dual homogeneous gluon field

abstract:
  Using a simple relativistic QFT model of scalar fields we demonstrate that
the analytic confinement (propagator is an entire function in the complex
$p^2$--plane) and the weak coupling constant lead to the Regge behaviour of the
two-particle bound states. In QCD we assume that the gluon vacuum is realized
by the self-dual homogeneous classical field which is the solution of the
Yang-Mills equations. This assumption leads to analytical confinement of quarks
and gluons. We extract the colorless $0^{++}$ two-gluon state from the QCD
generating functional in the one-gluon exchange approximation. The mass of this
bound state is defined by the Bethe-Salpeter equation. The glueball mass is
$1765~{\rm MeV}$ for $\alpha_s=0.33$ if the gluon condensate is
$<(\alpha_s/\pi) G G >=0.012~{\rm GeV}^4$.


title: Thermal approach to RHIC

abstract:
  Applications of a simple thermal model to ultra-relativistic heavy-ion
collisions are presented. We compute abundances of various hadrons, including
particles with strange quarks, the pT-spectra, and the HBT radii for the pion.
Surprising agreement is found, showing that the thermal approach can be used
successfully to understand and describe the RHIC data.


title: QCD at high density/temperature

abstract:
  I give a survey of recent progress in our understanding of QCD at high
density and temperature. I pay particular attention to color superconductivity,
applications of lattice gauge theory at nonzero density as well as high
temperature, perturbative results at high temperature, and non-equilibrium
calculations.


title:
Study of Proton Expansion in (p,2p) Quasielastic Scattering at Large
  Transverse Momentum

abstract:
  The measured nuclear transparencies in targets of Li, C, Al, Cu and Pb at
incident momenta of 6, 10, and 12 GeV/c have been used to study the rate of
proton expansion connected with (p,2p) quasielastic scattering at large
momentum transfer. Simple models with linear or quadratic expansion of the
effective cross section fail to simultaneously fit the measured transparencies
at all three momenta. If only the 6 and 10 GeV/c transparencies are fitted,
satisfactory representations can be obtained when the expansion distances for
protons at 6 GeV/c are greater than 6.4 fm(linear) and 4.0 fm(quadratic). These
distances are greater than those suggested by most Expansion models except the
quadratic 'naive expansion' picture. However, the transparencies are well
represented by the Nuclear Filtering model with no explicit expansion.


title: Dispersive Treatment of K --> Pi Pi

abstract:
  We propose a new method to obtain the K -> pi pi amplitude from K -> pi which
allows one to fully account for the effects of final state interactions. The
method is based on a set of dispersion relations for the K -> pi pi amplitude
in which the weak Hamiltonian carries momentum. The soft pion theorem, which
relates this amplitude to the K -> pi amplitude, can be used to determine one
of the two subtraction constants - the second constant is at present known only
to leading order in chiral perturbation theory.


title:
CP violation in $B \to \phi K$ decay and anomalous right-handed top
  quark couplings

abstract:
  We explore the CP violation in $B \to \phi K$ decay processes in the presence
of the anomalous right-handed $\bar{t}sW$ and $\bar{t}bW$ couplings. The
complex anomalous top coupling can be a source of the new CP violation and lead
to a deviation of the observed weak phase in $B \to \phi K$ decays, which takes
account for the present disagreement of the observed $\sin 2 \beta$ between $B
\to J/\psi K$ and $B \to \phi K$ decays. The direct CP violation is also
predicted.


title:
Non-universal gauge bosons $Z^{\prime}$ and lepton flavor-violation tau
  decays

abstract:
  There are many models beyond the standard model predicting the existence of
non-universal gauge bosons $Z^{\prime}$, which can give rise to very rich
phenomena. We calculate the contributions of the non-universal gauge bosons
$Z^{\prime}$, predicted by topcolor-assisted technicolor (TC2) models and
flavor-universal TC2 models, to the lepton flavor-violation tau decays $\tau\to
l_{i}\gamma$ and $\tau\to l_{i}l_{j}l_{k}$. We find that the branching ratio
$B_{r}(\tau\longrightarrow l_{i}l_{j}l_{k})$ is larger than that of the process
$\tau\longrightarrow l_{i}\gamma$ in all of the parameter space. Over a sizable
region of the parameter space, we have $B_{r}(\tau\longrightarrow
l_{i}l_{j}l_{k})\sim 10^{-8}$, which may be detected in the future experiments.


title:
Chaos Enforced Instanton Tunnelling in One-Dimensional Model with
  Periodic Potential

abstract:
  The influence of chaos on properties of dilute instanton gas in quantum
mechanics is studied. We demonstrate on the example of one-dimensional periodic
potential that small perturbation leading to chaos squeezes instanton gas and
increases the rate of instanton tunnelling.


title:
Electromagnetic radiative corrections to pionic beta decay \pi^+ to
  \pi^0 e^+ \nu_e

abstract:
  Pionic beta decay \pi^+ to \pi^0 e^+ \nu_e is analyzed in chiral perturbation
theory with virtual photons and leptons. All electromagnetic corrections up to
order e^2 p^2 are taken into account. Theoretical results are confronted with
preliminary data from a PSI measurement and a value for the CKM matrix element
|Vud| is given. Although the precision is presently still below the one of
existing determinations of |Vud|, an analysis of pionic beta decay, based on a
systematic treatment within a low-energy effective field theory, may become a
useful alternative.


title:
$S_{2L}$ permutation symmetry for left-handed $\mu$ and $\tau$ families
  and neutrino oscillations in an $SU(3)_L \times U(1)_N$ gauge model

abstract:
  We construct an $SU(3)_L \times U(1)_N$ gauge model based on an $S_{2L}$
permutation symmetry for left-handed $\mu$ and $\tau$ families, which provides
the almost maximal atmospheric neutrino mixing and the large solar neutrino
mixing of the LMA type. Neutrinos acquire one-loop radiative masses induced by
the radiative mechanism of the Zee type as well as tree level masses induced by
the type II seesaw mechanism utilizing interactions of lepton triplets with an
SU(3)-sextet scalar. The atmospheric neutrino mixing controlled by the
tree-level and radiative masses turns out to be almost maximal owing to the
presence of $S_{2L}$ supplemented by a $Z_4$ discrete symmetry. These
symmetries ensure the almost equality between the $\nu_e$-$\nu_\mu$ and
$\nu_e$-$\nu_\tau$ radiative masses dominated by contributions from heavy
leptons contained in the third members of lepton triplets, whose Yukawa
interactions conserve $S_{2L}$, even after the spontaneous breaking. The solar
neutrino mixing controlled by radiative masses including a $\nu_\mu$-$\nu_\tau$
mass, which are taken to be the similar order, turns out to be described by
large solar neutrino mixing angles.


title: Evaluating double and triple (?) boxes

abstract:
  A brief review of recent results on analytical evaluation of double-box
Feynman integrals is presented. First steps towards evaluation of massless
on-shell triple-box Feynman integrals within dimensional regularization are
described. The leading power asymptotic behaviour of the dimensionally
regularized massless on-shell master planar triple-box diagram in the Regge
limit $t/s \to 0$ is evaluated. The evaluation of the unexpanded master planar
triple box is outlined and explicit results for coefficients at $1/\ep^j$,
j=2,...,6, are presented.


title: On the Time Dependence of Fundamental Constants

abstract:
  We discuss how the results of recent measurements on the spectra of quasars
are predicted by the non-perturbative solution of String Theory proposed in
hep-th/0207195.


title:
Project {\tt SANC} (former {\tt CalcPHEP}): Support of Analytic and
  Numeric calculations for experiments at Colliders

abstract:
  The project, aimed at the theoretical support of experiments at modern and
future accelerators -- TEVATRON, LHC, electron Linear Colliders (TESLA, NLC,
CLIC) and muon factories, is presented. Within this project a four-level
computer system is being created, which must automatically calculate, at the
one-loop precision level the pseudo- and realistic observables (decay rates and
event distributions) for more and more complicated processes of elementary
particle interaction, using the principle of knowledge storing.
  It was already used for a recalculation of the EW radiative corrections for
Atomic Parity Violation [1] and complete one-loop corrections for the process
$e^+ e^-\to t\bar{t}$ [2-4]; for the latter an, agreement up to 11 digits with
FeynArts and the other results is found. The version of {\tt SANC} that we
describe here is capable of automatically computing the decay rates and the
distributions for the decays $Z(H,W)\to f\bar{f}$ in the one-loop
approximation.


title: High Density QCD and Saturation of Nuclear Partons

abstract:
  We review the recent finding of the two-plateau momentum distribution of sea
quarks in deep inelastic scattering off nuclei in the saturation regime. The
diffractive plateau which dominates for small $\bp$ measures precisely the
momentum distribution of quarks in the beam photon, the r\^ole of the nucleus
is simply to provide an opacity. The plateau for truly inelastic DIS exhibits a
substantial nuclear broadening of the momentum distribution. Despite this
nuclear broadening, the observed final state and initial state sea quark
densities do coincide exactly. We emphasize how the saturated sea is generated
from the nuclear-diluted Weizs\"acker-Williams because of the anti-collinear
splitting of gluons into sea quarks.


title: CP violation from dimensional reduction: a simple example

abstract:
  CP is a symmetry of pure gauge theories, that is without scalar interactions.
Actually its violation originates in the Standard Model from the completely
arbitrary Yukawa couplings. Thus, as the unification principle would wash out
the arbitrariness of these couplings possibly relating them to the gauge
interactions, the resulting theory should be expected as CP-invariant.
According to this, a breaking mechanism of CP should then take place. We will
explore here the possibility of CP breaking through the dimensional reduction
process.


title:
Probing chiral-odd GPD's in diffractive electroproduction of two vector
  mesons

abstract:
  We consider the electroproduction of two vector mesons with a large rapidity
gap between them on a nucleon target in the process $ \gamma ^* N \to \rho_1
\rho_2 N'$. We calculate the Born term for this process within the collinear
factorization framework. The resulting scattering amplitude may be represented
as a convolution of an impact factor describing the $\gamma ^* \to \rho_1$
transition and an amplitude describing the $N\to \rho_2 N'$ transition. The
latter amplitude is analogous to deeply virtual electroproduction of a meson,
the virtual photon being replaced by two gluon (Pomeron) exchange . The long
distance part of this amplitude is described by Generalized Parton
Distributions (GPD) and meson light-cone distributions. The selection of a
transversely polarized vector meson $\rho_2$ provides the first feasible
selective access to chiral-odd GPD.


title: A bound on neutrino masses from baryogenesis

abstract:
  Properties of neutrinos, the lightest of all elementary particles, may be the
origin of the entire matter-antimatter asymmetry of the universe. This requires
that neutrinos are Majorana particles, which are equal to their antiparticles,
and that their masses are sufficiently small. Leptogenesis, the theory
explaining the cosmic matter-antimatter asymmetry, predicts that all neutrino
masses are smaller than 0.2 eV, which will be tested by forthcoming laboratory
experiments and by cosmology.


title: Direct Higgs production at hadron colliders

abstract:
  We consider QCD corrections to Higgs boson production through gluon-gluon
fusion in hadron collisions. We compute the effects of soft-gluon emission to
all orders. We present numerical results at the Tevatron and the LHC.


title: Seesaw and Lepton Flavour Violation in SUSY SO(10)

abstract:
  That $\mu \to e, \gamma$ and $\tau \to \mu,\gamma$ are sensitive probes of
SUSY models with a see-saw mechanism is a well accepted fact. Here we propose a
`top-down' approach in a general SUSY SO(10) scheme. In this framework, we show
that at least one of the neutrino Yukawa couplings is as large as the top
Yukawa coupling. This leads to a strong enhancement of these leptonic flavour
changing decay rates. We examine two `extreme' cases, where the lepton mixing
angles in the neutrino Yukawa couplings are either small (CKM-like) or large
(PMNS-like). In these two cases, we quantify the sensitivity of leptonic
radiative decays to the SUSY mass spectrum. In the PMNS case, we find that the
ongoing experiments at the B-factories can completely probe the spectrum up to
gaugino masses of 500 GeV (any tan $\beta$). Even in the case of CKM-like
mixings, large regions of the parameter space will be probed in the near
future, making these two processes leading candidates for indirect SUSY
searches.


title: Properties of the a0 resonances

abstract:
  We present results following from the coupled channel model of two a0
resonances decaying into the pi-eta and K anti-K mesons. The a0(980) resonance
can be described by two distinct poles. It is shown that the discrepancy in the
a0(980) mass position between the Crystal Barrel Collaboration and the E852
Group can be explained and removed. In our model with parameters fixed by the
present experimental data the a0(980) cannot be interpreted as a bound K anti-K
state although the K anti-K forces in the S-wave isovector channel are
attractive.


title:
Leading Electroweak Two-Loop Corrections to Precision Observables in the
  MSSM

abstract:
  The leading electroweak MSSM two-loop corrections to the electroweak
precision observables are calculated. They are obtained by evaluating the
two-loop O(\alpha_t^2), O(\alpha_t \alpha_b), O(\alpha_b^2) contributions to
the quantity \Delta\rho in the limit of heavy scalar quarks, i.e. we consider
the contributions of a Two-Higgs-Doublet model with MSSM restrictions. The full
analytic result for arbitrary values of the lightest CP-even Higgs boson mass
is presented. The numerical effects of the leading electroweak MSSM two-loop
corrections on the precision observables M_W and sin^2(theta_eff) are analyzed.
The electroweak two-loop contribution to M_W amounts up to -12 MeV and up to +6
10^-5 for sin^2(theta_eff). The corrections from the bottom quark loops can
become important for large values of tan beta. They enter with a different sign
than the O(\alpha_t^2) corrections. We furthermore investigate the current
sensitivity of the electroweak precision observables to the top Yukawa coupling
in the SM and the MSSM. The prospects for indirectly determining this coupling
at the next generation of colliders are discussed.


title:
Resummed Effective Lagrangian for Higgs-Mediated FCNC Interactions in
  the CP-Violating MSSM

abstract:
  We derive the general resummed effective Lagrangian for Higgs-mediated
flavour-changing neutral-current (FCNC) interactions in the Minimal
Supersymmetric Standard Model (MSSM), without resorting to particular
assumptions that rely on the squark-mass or the quark-Yukawa structure of the
theory. In our derivation we also include the possibility of explicit CP
violation through the Cabibbo--Kobayashi--Maskawa mixing matrix and soft
supersymmetry-breaking mass terms. The advantages of our resummed FCNC
effective Lagrangian are explicitly demonstrated within the context of
phenomenologically motivated scenarios. We obtain new testable predictions in
the large $\tan\beta$ regime of the theory for CP-conserving and CP-violating
observables related to the $K$- and $B$-meson systems, such as $\Delta
M_{K,B}$, $\epsilon_K$, $\epsilon'/\epsilon$, ${\cal B}(B_{d,s} \to
\ell^+\ell^-)$ and their associated leptonic CP asymmetries. Finally, based on
our resummed FCNC effective Lagrangian, we can identify configurations in the
soft supersymmetry-breaking parameter space, for which a kind of a
Glashow--Iliopoulos--Maiani-cancellation mechanism becomes operative and hence
all Higgs-mediated, $\tan\beta$-enhanced effects on $K$- and $B$-meson FCNC
observables vanish.


title: $B^0_d-{\bar B}^0_d$ mixing in the left-right supersymmetric model

abstract:
  We analyze $B^0_d-{\bar B}^0_d$ mixing in a fully left-right supersymmetric
model. We give explicit expressions for all the chargino, gluino,
gluino-neutralino and neutralino amplitudes involved in the process. We
calculate the mass difference $\Delta m_d$ and CP asymmetry $a_{J/\psi K_s}$ in
both the constrained case (where the only flavor violation comes from the
Cabibbo-Kobayashi-Maskawa matrix) and the unconstrained case (including soft
supersymmetry breaking terms). The constrained case does not contain any new
information beyond the supergravity-inspired MSSM. In the unconstrained case,
the main contribution to $B^0_d-{\bar B}^0_d$ and the CP asymmetry is due to
either gluino diagrams, if the dominating flavor mixing arises in the down
squark sector, or chargino diagrams, if the dominant flavor mixing comes from
the up squark sector. We include numerical results and compare this analysis
with the ones performed in other models.


title:
Charmonium dissociation in the context of Bethe-Salpeter equation at
  finite temperature

abstract:
  We derive the spin-dependent Bethe-Salpeter equation for $q\bar{q}$ bound
state at finite temperature in the ladder and cross box diagram approximations.
The imaginary time formalism is adopted in the adiabatic approximation where
the flux tube thermal excitation is separated from the thermal excitation of
the constituent quarks. The thermal excitation of the flux tube is implemented
by using a temperature dependent potential inferred from the lattice gauge
calculations. The thermal excitations of the constituent quarks are evaluated
by summing Matsubara frequencies. The resultant equation is used to study the
thermal charmonium spontaneous dissociation mechanism at temperatures below the
critical one of the phase transition to the quark gluon plasma. Our results
show that when the thermal excitation of the constituent quarks is considered
beside the flux tube thermal excitation, the spontaneous dissociation unlikely
takes place in the hadronic phase. In contrary, when the thermal excitation of
the flux tube is considered only in the calculations, the spontaneous
dissociation likely takes place just below the critical temperature.


title:
Super-conservative interpretation of muon g-2 results applied to
  supersymmetry

abstract:
  The recent developments in theory and experiment related to the anomalous
magnetic moment of the muon are applied to supersymmetry. We follow a very
cautious course, demanding that the supersymmetric contributions fit within
five standard deviations of the difference between experiment and the standard
model prediction. Arbitrarily small supersymmetric contributions are then
allowed, so no upper bounds on superpartner masses result. Nevertheless,
non-trivial exclusions are found. We characterize the substantial region of
parameter space ruled out by this analysis that has not been probed by any
previous experiment. We also discuss some implications of the results for
forthcoming collider experiments.


title: Neutrinoless Double Beta Decay in Supersymmetric Seesaw model

abstract:
  Inspired by the recent HEIDELBERG-MOSCOW double beta decay experiment, we
discuss the neutrinoless double beta decay in the supersymmetric seesaw model.
Our numerical analysis indicates that we can naturally explain the data of the
observed neutrinoless double beta decay, as well as that of the solar and
atmospheric neutrino experiments with at least one Majorana-like sneutrino of
middle energy scale in the model.


title:
Effects of chiral restoration on the behaviour of the Polyakov loop at
  strong coupling

abstract:
  We discuss the relation between the Polyakov loop and the chiral order
parameter at finite temperature. For that purpose we analyse an effective model
proposed by Gocksch and Ogilvie, which is constructed by the double expansion
of strong coupling and large dimensionality. We make improvements in dealing
with the model and then obtain plausible results for the behaviours of both the
Polyakov loop and the chiral scalar condensate. The pseudo-critical temperature
read from the Polyakov loop turns out to coincide exactly with that read from
the chiral scalar condensate. Within the model study based on the strong
coupling expansion, the coincidence of the pseudo-critical temperatures results
from the fact that the jump of the Polyakov loop in the presence of dynamical
quarks should signify the chiral phase transition rather than the deconfinement
transition.


title: Semi-numerical resummation of event shapes and jet rates

abstract:
  We describe a numerical procedure to resum multiple emission effects in event
shape variables and jet rates.


title: Recent progress in QCD at low energies

abstract:
  The recent results in QCD at low energies are reported. The theoretical
analysis of hadronic tau-decay is performed in complex q^2-plane. The terms of
perturbation theory (PT) up to alpha^3_s are accounted, the terms of operator
product expansion (OPE) -- up do dimension 8. The momenta of charmed quark
vector current polarization operator are analyzed in 3 loops with account of
dimension 4 and 6 OPE terms. The main conclusion is that in the range of
low-energy phenomena under consideration PT and OPE are in good agreement with
experiment starting from Q^2=-q^2 ~ 1 GeV^2. The values of alpha_s(m^2_tau),
alpha_s<qq>^2, <(alpha_s/pi)G^2> and m_c(m_c)were found.


title:
Registration of hydrogen-like leptonic bound states (e^- mu^+) and (e^+
  mu^-) in reactions of high-energy scattering of polarized electrons and
  positrons by nuclei with Z ~ 100 and analysis of CPT invariance

abstract:
  The cross sections for the reactions of muonium(anti-muonium) production in
high energy electron(positron) scattering by nuclei e^-(e^+) + Z -> Z +
M^0(anti-M^0) + mu^-(mu^+) are calculated in dependence on an energy and
polarization of an initial electron(positron) and a polarization of a final
mu^-(mu^+)-meson. Due to coherent phenomenon the cross sections are
proportional to Z^2. For Z ~ 100 due to the factor Z^2 the cross sections are
large enough to be measured at energies available at the HERA Collider in DESY.
The results are discussed in connection with a test of CPT invariance.


title: DGLAP analyses of nPDF: constraints from data

abstract:
  We explain how the constraints from present experimental data can be used to
obtain the nPDF in the framework of LO DGLAP evolution. We will also compare
the only two available sets of this type and comment on the important
information that neutrino factories could provide.


title: Interpretations of the NuTeV $\sin^2 \theta_W$

abstract:
  We summarize theoretical explanations of the three $\sigma$ discrepancy
between $\sin^2 \theta_W$ measured by NuTeV and predicted by the Standard Model
global fit. Possible new physics explanations ({\it e.g.} an unmized $Z'$) are
not compelling. The discrepancy would be reduced by a positive momentum
asymmetry $s^-$ in the strange sea; present experimental estimates of $s^-$ are
unreliable or incomplete. Upgrading the NuTeV analysis to NLO would alleviate
concerns that the discrepancy is a QCD effect.


title: Structure Functions are not Parton Probabilities

abstract:
  Parton distributions given by deep inelastic lepton scattering (DIS) are not
equal to the probabilities of finding those partons in the parent wave
function. Soft rescattering of the struck parton within the coherence length of
the hard process influences the DIS cross section and gives dynamical phases to
the scattering amplitudes. This gives rise to diffractive DIS, shadowing in
nuclear targets and transverse spin asymmetry.


title: Perturbative QCD with Quark and Gluon Condensates

abstract:
  The quark <\bar\psi \psi> and gluon <F_{\mu\nu}F^{\mu\nu}> vacuum expectation
values are non-vanishing at low orders in \alpha_s when the perturbative ground
state includes quark and gluon pairs. This offers possibilities of studying the
effects of a non-trivial vacuum using formally exact perturbative methods. The
QCD Feynman rules are modified only for the free, on-shell quark and gluon
propagators at zero four-momentum. Gauge and lorentz invariance is maintained,
while chiral symmetry is spontaneously broken by the ground state.


title: Lattice QCD data versus Chiral Perturbation Theory: the case of $M_\pi$

abstract:
  I present a selection of recent lattice data by major collaborations for the
pseudo-Goldstone boson masses in full ($N_f=2$) QCD, where the valence quarks
are chosen exactly degenerate with the sea quarks. At least the more chiral
points should be consistent with Chiral Perturbation Theory for the latter to
be useful in extrapolating to physical masses. Perspectives to reliably
determine NLO Gasser-Leutwyler coefficients are discussed.


title: Diffractive jet production in lepton-hadron collisions

abstract:
  We study jet final states in diffractive deep-inelastic scattering. We
present the QCD factorization formula in terms of diffractive parton
distributions and discuss its implementation in NLO Monte Carlo generators. We
compute NLO predictions for the diffractive jet cross section. We use this
calculational framework to discuss theoretical models of the long-distance
behavior.


title: Supersymmetric Axion-Neutrino Merger

abstract:
  The recently proposed supersymmetric $A_4$ model of the neutrino mass matrix
is modified to merge with a previously proposed axionic solution of the strong
CP problem. The resulting model has only one input scale, i.e. that of $A_4$
symmetry breaking, which determines both the seesaw neutrino mass scale and the
axion decay constant. It also solves the $\mu$ problem and conserves R parity
automatically.


title: Fluid Interpretation of Cardassian Expansion

abstract:
  A fluid interpretation of Cardassian expansion is developed. Here, the
Friedmann equation takes the form $H^2 = g(\rho_M)$ where $\rho_M$ contains
only matter and radiation (no vacuum). The function $g(\rhom)$ returns to the
usual $8\pi\rhom/(3 m_{pl}^2)$ during the early history of the universe, but
takes a different form that drives an accelerated expansion after a redshift $z
\sim 1$. One possible interpretation of this function (and of the right hand
side of Einstein's equations) is that it describes a fluid with total energy
density $\rho_{tot} = {3 m_{pl}^2 \over 8 \pi} g(\rhom) = \rhom + \rho_K$
containing not only matter density (mass times number density) but also
interaction terms $\rho_K$. These interaction terms give rise to an effective
negative pressure which drives cosmological acceleration. These interactions
may be due to interacting dark matter, e.g. with a fifth force between
particles $F \sim r^{\alpha -1}$. Such interactions may be intrinsically four
dimensional or may result from higher dimensional physics. A fully relativistic
fluid model is developed here, with conservation of energy, momentum, and
particle number. A modified Poisson's equation is derived. A study of
fluctuations in the early universe is presented, although a fully relativistic
treatment of the perturbations including gauge choice is as yet incomplete.


title:
Sigma(770) Resonance and the Breaking of Scale and Chiral Symmetry in
  Effective QCD

abstract:
  CERN measurements of pi(-)p->pi(-)pi(+)n on polarized target at 17.2 GeV/c
enable experimental determination of partial wave production amplitudes below
1080 MeV. The measured S-wave transversity amplitudes provide evidence for a
narrow scalar resonance sigma(770). The assumption of analyticity of production
amplitudes in dipion mass allows to determine S-wave helicity amplitudes S_0
and S_1. The amplitude S_1 is related to pi(-)pi(+)->pi(-)pi(+) scattering.
There are four "down" solutions (1, 1bar), (2, 1bar), (1, 2bar) and (2, 2bar)
selected by unitarity in pipi scattering. Ellis-Lanik relation between the mass
m_sigma and partial width Gamma(sigma->pi(-)pi(+)) derived from an effective
QCD theory with broken scale and chiral symmetry selects solutions (1, 1bar)
and (1, 2bar) and imparts the sigma(770) resonance with a dilaton-gluonium
interpretation. Weinberg's mended symmetry selects solutions (1, 1bar) and (2,
1bar). The combin ed solution (1, 1bar) has m_sigma=769 +/- 13 MeV and
Gamma_sigma=154 +/- 22 MeV. The observed sigma-rho^0 degeneracy leads to two
new relations between gluon condensate and pion decay constant and SU(2) chiral
condensate. Both relations are well satisfied. Ellis-Lanik relation relates the
existence of sigma(770) to breaking of scale symmetry in QCD. Interaction of
chirally invariant and narrow sigma(770) with a chirally noninvariant QCD
vacuum in pi(-)pi(+)->pi(-)pi(+) scattering is proposed as a possible mechanism
for the metamorphosis of sigma(770) into a broad resonant S-wave structure in
pi(-)pi(+)->pi(-)pi(+) related to spontaneous breaking of chiral symmetry in
QCD.


title:
Beyond-Constant-Mass-Approximation Magnetic Catalysis in the Gauge
  Higgs-Yukawa Model

abstract:
  Beyond-constant-mass approximation solutions for magnetically catalyzed
fermion and scalar masses are found in a gauge Higgs-Yukawa theory in the
presence of a constant magnetic field. The obtained fermion masses are several
orders of magnitude larger than those found in the absence of Yukawa
interactions. The masses obtained within the beyond-constant-mass approximation
exactly reduce to the results within the constant-mass approach when the
condition $\nu \ln (\frac{1}{\hat{m}^{2}})\ll 1$ is satisfied. Possible
applications to early universe physics and condensed matter are discussed.


title: New Experimental Constraints on Non-Newtonian Forces below 100 microns

abstract:
  We have searched for large deviations from Newtonian gravity by means of a
microcantilever-based Cavendish-style experiment. Our data eliminate from
consideration mechanisms of deviation that posit strengths ~10^4 times
Newtonian gravity at length scales of 20 microns. This measurement is 3 orders
of magnitude more sensitive than others that provide constraints at similar
length scales.


title: New Physics Search via the Higgs Self-Coupling

abstract:
  We discuss quantum corrections of new physics to the triple coupling of the
lightest CP-even Higgs boson in the Two Higgs Doublet Model (THDM) and also in
the Minimal Supersymmetric Standard Model (MSSM). In the THDM, quartic
contributions of the mass of heavy particles in the loop can appear, which are
not absorbed by renormalization of the Higgs boson mass. Such non-decoupling
effects on the self-coupling can give corrections of ${\cal O}(100%)$, even
when all measured Higgs couplings with gauge bosons and fermions are consistent
with the Standard Model prediction. In the MSSM, the loop-corrections decouple
in such a scenario.


title: Black holes in extra dimensions can decay on the bulk

abstract:
  In the extra dimensional theories, with TeV scale Plank constant, black holes
may be produced in the Large Hadron Collider experiments. We have argued that
in the d-dimensional black hole, the intrinsically 4-dimensional brane fields
do not see the same geometry at the horizon, as in a 4-dimensional space-time.
Kaluza-Klein modes invades the brane and surroundings and the brane fields can
be considered as a thermal system at the temperature of the black hole. From
energy and entropy consideration, we show that whether or not a six-dimensional
black hole will decay by emitting Kaluza-Klein modes or the standard model
particles, will depend on the length scale of the extra dimensions as well as
on the mass of the black hole. For higher dimensional black holes, Kaluza-Klein
modes will dominate the decay.


title: Leading particles and diffractive spectra in the Interacting Gluon Model

abstract:
  We discuss the leading particle spectra and diffractive mass spectra from the
novel point of view, namely by treating them as particular examples of the
general energy flow phenomena taking place in the multiparticle production
processes. We argue that they show a high degree of universality what allows
for their simple description in terms of the Interacting Gluon Model developed
by us some time ago.


title: Hadronic light-by-light scattering contribution to the muon g-2

abstract:
  We briefly review the current status of the hadronic light-by-light
scattering correction to the muon g-2. Then we present our semi-analytical
evaluation of the pion-pole contribution, using a description of the
pion-photon-photon form factor based on large-N_C and short-distance properties
of QCD. We also sketch an effective field theory approach to hadronic
light-by-light scattering. In view of several still unsolved problems, our
conservative estimate for the full hadronic light-by-light scattering
contribution is a_{mu}(LbyL;had) = + 8 (4) x 10^{-10}.


title:
RacoonWW1.3: A Monte Carlo program for four-fermion production at e^+
  e^- colliders

abstract:
  We present the Monte Carlo generator RacoonWW that computes cross sections to
all processes e^+ e^- -> 4f and e^+ e^- -> 4f + gamma and calculates the
complete O(alpha) electroweak radiative corrections to e^+ e^- -> W W -> 4f in
the electroweak Standard Model in double-pole approximation. The calculation of
the tree-level processes e^+ e^- -> 4f and e^+ e^- -> 4f + gamma is based on
the full matrix elements for massless (polarized) fermions. When calculating
radiative corrections to e^+ e^- -> W W -> 4f the complete virtual
doubly-resonant electroweak corrections are included, i.e. the factorizable and
non-factorizable virtual corrections in double-pole approximation, and the real
corrections are based on the full matrix elements for e^+ e^- -> 4f + gamma.
The matching of soft and collinear singularities between virtual and real
corrections is done alternatively in two different ways, namely by using a
subtraction method or by applying phase-space slicing. Higher-order
initial-state photon radiation and naive QCD corrections are taken into
account. RacoonWW also provides anomalous triple gauge-boson couplings for all
processes e^+ e^- -> 4f and anomalous quartic gauge-boson couplings for all
processes e^+ e^- -> 4f + gamma.


title: Impact of B physics on model building and vice versa: an example

abstract:
  We motivate that the start-up of the B factories has opened a new precision
flavour physics era, with an important effect on model building. Using as an
example a left-right model with spontaneous CP violation, we will show how the
inclusion of the new experimental data on B physics observables, together with
the old observables coming from kaon physics, has significantly widened our
capacity to strongly constrain the parameter space up to the point to exclude
models. On the contrary, using certain hypotheses, mainly concerning isospin,
we discuss how theory may help us to `test' the data on charged, neutral and
mixed $B \to \pi K$ decays once experimental errors will be reduced.


title: K -> pi pi Electroweak Penguins in the Chiral Limit

abstract:
  We report on dispersive and finite energy sum rule analyses of the
electroweak penguin matrix elements < (pi pi) | Q_{7,8} | K > in the chiral
limit. We accomplish the correct perturbative matching (scale and scheme
dependence) at NLO in alpha_s, and we describe two different strategies for
numerical evaluation.


title:
Universal Texture of Quark and Lepton Mass Matrices and a Discrete
  Symmetry Z_3

abstract:
  Recent neutrino data have been favourable to a nearly bimaximal mixing, which
suggests a simple form of the neutrino mass matrix. Stimulated by this matrix
form, a possibility that all the mass matrices of quarks and leptons have the
same form as in the neutrinos is investigated. The mass matrix form is
constrained by a discrete symmetry Z_3 and a permutation symmetry S_2. The
model, of course, leads to a nearly bimaximal mixing for the lepton sectors,
while, for the quark sectors, it can lead to reasonable values of the CKM
mixing matrix and masses.


title:
Multiplicity Distribution studies of $e^+e^-$-annihilation at 50-61.4
  GeV and 172-189 GeV by Two Stage Model hadronization

abstract:
  The multiplicity distributions at high energy $e^+e^-$ annihilation are
described well within the Two Stage Model in the region from 14 to 189 GeV.
Energy dependence of parameters of this model gives the dynamic picture of the
parton stage and the stage of hadronization. It is shown that oscillations in
sign of the ratio of factorial cumulant moments over factorial moments of
increasing order can be confirmed by this model.


title:
Delineating the polarized and unpolarized photon distributions of the
  nucleon in eN collisions

abstract:
  The production rates of lepton-photon and dimuon pairs at the HERA collider
and the HERMES experiment are evaluated in the leading order equivalent photon
approximation. It is shown that the production rates are sufficient to
facilitate the extraction of the polarized and unpolarized equivalent photon
distributions of the proton and neutron in the available kinematical regions.
It is pointed out that these results indicate the possibility of additional,
independent, tests concerning the unpolarized and polarized structure functions
F_{1,2}^N and g_{1,2}^N, respectively, of the nucleon.


title:
Generalized spin polarizabilities of the nucleon in Heavy Baryon Chiral
  Perturbation Theory at order ${\mathcal O}(p^4)$

abstract:
  We present the first heavy baryon chiral perturbation theory calculation at
${\mathcal O}(p^4)$ for the spin-dependent amplitudes for virtual Compton
scattering off the nucleon, and extract the ${\cal O}(p^4)$ order results for
the generalized spin polarizabilities of the nucleon.


title: Black Hole Chromosphere at the LHC

abstract:
  If the scale of quantum gravity is near a TeV, black holes will be copiously
produced at the LHC. In this work we study the main properties of the light
descendants of these black holes. We show that the emitted partons are closely
spaced outside the horizon, and hence they do not fragment into hadrons in
vacuum but more likely into a kind of quark-gluon plasma. Consequently, the
thermal emission occurs far from the horizon, at a temperature characteristic
of the QCD scale. We analyze the energy spectrum of the particles emerging from
the "chromosphere", and find that the hard hadronic jets are almost entirely
suppressed. They are replaced by an isotropic distribution of soft photons and
hadrons, with hundreds of particles in the GeV range. This provides a new
distinctive signature for black hole events at LHC.


title:
Signatures of Right-Handed Majorana neutrinos and gauge bosons in $e
  \gamma$ Collisions

abstract:
  The process $e^- \gamma \to e^+ W_R^- W_R^-$ is studied in the framework of
the Left-Right symmetric model. It is shown that this reaction and $e^- \gamma
\to l^+
  W_R^- W_R^-$ for the arbitrary final lepton are likely to be discovered for
CLIC collider option.
  For relatively light doubly charged Higgs boson its mass does not have much
influence on the discovery potential, while for heavier values the probability
of the reaction increases.


title: A model of glueballs

abstract:
  We model the observed glueball mass spectrum in terms of energies for tightly
knotted and linked QCD flux tubes. The data is fit well with one parameter. We
predict additional glueball masses.


title: Ultrasoft Renormalization in Non-Relativistic QCD

abstract:
  For Non-Relativistic QCD the velocity renormalization group correlates the
renormalization scales for ultrasoft, potential and soft degrees of freedom.
Here we discuss the renormalization of operators by ultrasoft gluons. We show
that renormalization of soft vertices can induce new operators, and also
present a procedure for correctly subtracting divergences in mixed
potential-ultrasoft graphs. Our results affect the running of the
spin-independent potentials in QCD. The change for the NNLL t-tbar cross
section near threshold is very small, being at the 1% level and essentially
independent of the energy. We also discuss implications for analyzing
situations where mv^2 ~ Lambda_QCD.


title: Elliptic Flow from Color Glass Condensate

abstract:
  We show that an observable fraction of the measured elliptic flow may
originate in classical gluon fields at the initial stage of a peripheral
high-energy nuclear collision. This mechanism complements the contribution of
late stage mechanisms, such as those described by hydrodynamics, to the
observed elliptic flow.


title:
Numerical solution of the color superconductivity gap in a weak coupling
  constant

abstract:
  We present the numerical solution of the full gap equation in a weak coupling
constant $g$. It is found that the standard approximations to derive the gap
equation to the leading order of coupling constant are essential for a secure
numerical evaluation of the logarithmic singularity with a small coupling
constant. The approximate integral gap equation with a very small $g$ should be
inverted to a soft integral equation to smooth the logarithmic singularity near
the Fermi surface. The full gap equation is solved for a rather large coupling
constant $g\ge 2.0$. The approximate and soft integral gap equations are solved
for small $g$ values. When their solutions are extrapolated to larger $g$
values, they coincide the full gap equation solution near the Fermi surface.
Furthermore, the analytical solution matches the numerical one up to the order
one O(1). Our results confirm the previous estimates that the gap energy is of
the order tens to 100 MeV for the chemical potential $\mu\le 1000$ MeV. They
also support the validity of leading approximations applied to the full gap
equation to derive the soft integral gap equation and its analytical solution
near the Fermi surface.


title:
Associated production of neutral toppion with a pair of heavy quarks in
  $\gamma\gamma$ collisions

abstract:
  We have studied a neutral toppion production process $\gamma\gamma\to
f\bar{f}\Pi_{t}^{0}(f=t,b)$ in the topcolor-assisted technicolor(TC2) model. We
find that the cross section of $\gamma\gamma\to t\bar{t}\Pi_{t}^{0}$ is much
larger than that of $\gamma\gamma\to b\bar{b}\Pi_{t}^{0}$. On the other hand,
the cross section can be obviously enhanced with the increasing of c.m.energy.
With $\sqrt{s}=1600$ GeV, the cross section of $t\bar{t}\Pi_t^0$ production can
reach the level of a few fb. The results show that $\gamma\gamma\to
t\bar{t}\Pi^0_t \to t\bar{t}(t\bar{c})$ is the most ideal channel to detect
neutral toppion due to the clean SM background. With such sufficient signals
and clean background, neutral toppion could be detected at TESLA with high
c.m.energy.


title:
Bounds on scalar leptoquark and scalar gluon masses from current data on
  S, T, U

abstract:
  The contributions into radiative correction parameters S, T, U from scalar
leptoquark and scalar gluon doublets are investigated in the minimal four color
symmetry model. It is shown that the existence of the relatively light scalar
leptoquarks and scalar gluons (with masses of order of 1 TeV or less) is
consistent with the current experimental data on S, T, U and the more light
particles (with masses below 400 GeV) improve the fit. In particular, the
lightest scalar leptoquarks with masses below 300 GeV are consistent with the
current data on S, T, U at $\chi^2 < 3.1(3.2)$ for $m_H=115(300) GeV$ in
comparison with $\chi^2 = 3.5(5.0)$ in the Standard Model. The lightest scalar
gluon in this case is expected to lie below $ 850(720) GeV.$ The possible
significance of such particles in the t-quark physics at LHC is emphasized and
their effect on the gauge coupling constant unification is briefly discussed.


title: Dissipation in equations of motion of scalar fields

abstract:
  The methods of non-equilibrium quantum field theory are used to investigate
the possibility of representing dissipation in the equation of motion for the
expectation value of a scalar field by a friction term, such as is commonly
included in phenomenological inflaton equations of motion. A sequence of
approximations is exhibited which reduces the non-equilibrium theory to a set
of local evolution equations. However, the adiabatic solution to these
evolution equations which is needed to obtain a local equation of motion for
the expectation value is not well defined; nor, therefore, is the friction
coefficient. Thus, a non-equilibrium treatment is essential, even for a system
that remains close to thermal equilibrium, and the formalism developed here
provides one means of achieving this numerically.


title: $B \to \rho \gamma$ Decay in the Large Energy Effective Theory

abstract:
  The branching ratio for the $B \to \rho \gamma$ decay in the next-to-leading
order (NLO) in the strong coupling $\alpha_s$ and in leading power in
$\Lambda_{\rm QCD}/m_B$ is presented. The corrections are combined the
hard-vertex, hard-spectator and annihilation contributions and found to be
large. The theoretical expectation for the branching ratios, the
isospin-violating ratio and for the direct CP-asymmetry in the $B \to \rho
\gamma$ decays are presented.


title: Neutrinoless double beta decay from a modern perspective

abstract:
  Neutrinoless double beta decay is a very important process both from the
particle and nuclear physics point of view. From the elementary particle point
of view it pops up in almost every model. giving rise, among others, to the
following mechanisms: a) The traditional contributions like the light neutrino
mass mechanism . b) The exotic R-parity violating supersymmetric (SUSY)
contributions. Similar considerations apply to its sister lepton and muon
number violating muon to positron conversion. The observation of neutrinoless
double beta decay will signal that the neutrinos are massive Majorana
particles. For nuclear physics it is challenging, because: 1) The nuclei, which
can undergo double beta decay, have complicated structure. 2) The energetically
allowed transitions are suppressed. 3) One must cope with the short distance
behavior of the transition operators. Thus novel effects (decay of pions in
flight between nucleons etc) have to be considered. 4) One has to take into
account possible momentum dependent terms of the nucleon current. For light
neutrinos such modifications of the nucleon current reduce the nuclear matrix
elements by about 25 per cent. In the case of heavy neutrino the effect is much
larger and model dependent. With the above effects the nuclear matrix elements
for all interesting nuclei A = 76, 82, 96, 100, 116, 128, 130, 136 and 150 are
discussed. Some have been obtained in the shell model but most in QRPA. Thus we
have extracted new limits on the various lepton violating parameters. We find
an average neutrino mass of about 0.5eV and, for reasonable choices of the
parameters of SUSY models, we get a stringent limit on the R-parity violating
parameter less than 0.00068.


title: Addressing transversity with interference fragmentation functions

abstract:
  The class of interference fragmentation functions, arising from interference
among different hadron production channels, is reconsidered. Their symmetry
properties with respect to chiral transformations allow building spin
asymmetries where the quark transversity distribution can be factorized out at
leading twist. For the case of two leading spinless hadrons inside the same
current jet, the pair system is expanded in relative partial waves. The cross
section is represented on the helicity basis of the target and the fragmenting
quark, as well as on the relative orbital angular momentum of the pair. From
the decay matrix being positive semi-definite, new bounds on the interference
fragmentation functions can be derived. The expansion in partial waves allows
to naturally incorporate in a unified formalism specific cases already studied
in the literature, such as the fragmentation functions arising from the
interference of two mesons in relative s and p waves, as well as the
fragmentation of a spin-1 hadron.


title: Measurements of CKM Elements and the Unitarity Triangle

abstract:
  In this presentation, I review the status of selected
Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and their role in the Unitarity
Triangle (UT). Since this conference concluded, many new results have been
finalized and are included in the new world averages (WAs) in the 2002 edition
of the PDG. I will focus here on some outstanding issues in the measurements of
the CKM elements in the third row and column.


title: Parametrization of the quark mixing matrix involving its eigenvalues

abstract:
  A parametrization of the $3\times 3$ Cabibbo-Kobayashi-Maskawa matrix, $V$,
is presented in which the parameters are the eigenvalues and the components of
its eigenvectors. In this parametrization, the small departure of the
experimentally determined $V$ from being moduli symmetric (i.e.
$|V_{ij}|=|V_{ji}|$) is controlled by the small difference between two of the
eigenvalues. In case, any two eigenvalues are equal, one obtains a moduli
symmetric $V$ depending on only three parameters. Our parametrization gives
very good fits to the available data including CP-violation. Our value of $\sin
2\beta\approx 0.7$ and other parameters associated with the ` unitarity
triangle' $V_{11}V_{13}^{*}+V_{21}V_{23}^{*}V_{31}V_{33}^{*}=0$ are in good
agreement with data and other analyses.


title: Precision W-pair physics with the YFSWW3 and KoralW Monte Carlos

abstract:
  We present the recent developments in the precision studies of W-pair and
single-W processes in e+e- collisions achieved with the help of the KoralW and
YFSWW3 Monte Carlo generators. We focus on the theoretical precision of the
measurements of M_W and anomalous couplings on the example of lambda coupling.
We present the mechanism of running these two independent codes in the form of
one Concurrent Monte Carlo code. We describe also the extensions of KoralW
necessary to emulate the kinematical region of single-W process.


title: Probing New Physics in $B\to K^{(*)} \ell^+\ell^-$ decays

abstract:
  We study the exclusive decays of $B\to K^{(*)}\ell^+ \ell^-$ by the results
in the perturbative QCD with the heavy quark effective theory and lattice
calculations. We obtain the form factors for the $B\to K^{(*)}$ transitions in
the whole allowed region. Our predictions on the branching ratios of $B\to K
\ell^{+} \ell^{-}$, $B\to K^{*} e^{+}e^{-}$, and $B\to K^{*} \mu^{+} \mu^{-}$
are $0.53\pm 0.05 ^{+0.10}_{-0.07}$, $1.68\pm 0.17^{+0.14}_{-0.09}$, and
$1.34\pm 0.13 ^{+0.11}_{-0.06}\times 10^{-6}$, where the errors are from the
quark mixing elements and hadronic effects, respectively. We also find that our
definitions of the T-odd observable and the up-down asymmetry of the $K$ meson
in $B\to K^*\ell^+ \ell^-\to K\pi\ell^+ \ell^-$ can be used to probe new
physics.


title: Effective Kinetic Theory for High Temperature Gauge Theories

abstract:
  Quasiparticle dynamics in relativistic plasmas associated with hot,
weakly-coupled gauge theories (such as QCD at asymptotically high temperature
$T$) can be described by an effective kinetic theory, valid on sufficiently
large time and distance scales. The appropriate Boltzmann equations depend on
effective scattering rates for various types of collisions that can occur in
the plasma. The resulting effective kinetic theory may be used to evaluate
observables which are dominantly sensitive to the dynamics of typical
ultrarelativistic excitations. This includes transport coefficients
(viscosities and diffusion constants) and energy loss rates. We show how to
formulate effective Boltzmann equations which will be adequate to compute such
observables to leading order in the running coupling $g(T)$ of high-temperature
gauge theories [and all orders in $1/\log g(T)^{-1}$]. As previously proposed
in the literature, a leading-order treatment requires including both $2<->2$
particle scattering processes as well as effective ``$1<->2$'' collinear
splitting processes in the Boltzmann equations. The latter account for nearly
collinear bremsstrahlung and pair production/annihilation processes which take
place in the presence of fluctuations in the background gauge field. Our
effective kinetic theory is applicable not only to near-equilibrium systems
(relevant for the calculation of transport coefficients), but also to highly
non-equilibrium situations, provided some simple conditions on distribution
functions are satisfied.


title: A Measurement of Psi(2S) Resonance Parameters

abstract:
  Cross sections for e+e- to hadons, pi+pi- J/Psi, and mu+mu- have been
measured in the vicinity of the Psi(2S) resonance using the BESII detector
operated at the BEPC. The Psi(2S) total width; partial widths to hadrons,
pi+pi- J/Psi, muons; and corresponding branching fractions have been determined
to be Gamma(total)= (264+-27) keV; Gamma(hadron)= (258+-26) keV, Gamma(mu)=
(2.44+-0.21) keV, and Gamma(pi+pi- J/Psi)= (85+-8.7) keV; and Br(hadron)=
(97.79+-0.15)%, Br(pi+pi- J/Psi)= (32+-1.4)%, Br(mu)= (0.93+-0.08)%,
respectively.


title:
Probing the deuteron structure at small N-N distances by cumulative pion
  production

abstract:
  The fragmentation of deuterons into pions emitted forward in the kinematic
region forbidden for free nucleon-nucleon collisions is analyzed. It is shown
that the inclusion of the non-nucleonic degrees of freedom in a deuteron
results in a satisfactory description of the data for the inclusive pion
spectrum and improves the description of the data about $T_{20}$. According to
the data, $T_{20}$ has very small positive values, less than 0.2, which
contradicts the theoretical calculations ignoring these degrees of freedom.


title:
Quantum description for a chiral condensate disoriented in a certain
  direction in isospace

abstract:
  We derive a quantum state of the disoriented chiral condensate dynamically,
considering small quantum fluctuations around a classical chiral condensate
disoriented in a certain direction $ \vec n $ in isospace. The obtained
nonisosinglet quantum state has the characteristic features; (i) it has the
form of the squeezed state, (ii) the state contains not only the component of
pion quanta in the direction $ \vec n $ but also the component in the
perpendicular direction to $ \vec n $ and (iii) the low momentum pions in the
state violate the isospin symmetry. With the quantum state, we calculate the
probability of the neutral fraction depending on the time and the pion's
momentum, and find that the probability has an unfamiliar form. For the low
momentum pions, the parametric resonance mechanism works with the result that
the probability of the neutral fraction becomes the well known form
approximately and that the charge fluctuation is small.


title:
The Impact of $\sigma(e^+e^-\to {hadrons})$ Measurements at Intermediate
  Energies on the Parameters of the Standard Model

abstract:
  We discuss the impact of precision measurements of $\sigma(e^+e^-\to
{hadrons})$ in the center-of-mass range between 3 and 12 GeV, including
improvements in the electronic widths of the narrow charmonium and bottonium
resonances, on the determination of parameters of the Standard Model. In
particular we discuss the impact of potential improvements on the extraction of
the strong coupling constant $\alpha_s$, on the evaluation of the hadronic
contributions to the electromagnetic coupling $\alpha(M_Z)$, and the
determination of the charm and bottom quark masses.


title: I-balls

abstract:
  We find that there exists a soliton-like solution ``I-ball'' in theories of a
real scalar field if the scalar potential satisfies appropriate conditions.
Although the I-ball does not have any topological or global U(1) charges, its
stability is ensured by the adiabatic invariance for the oscillating field.


title: The Global Electroweak Fit

abstract:
  We report the results of the global electroweak fit, with emphasis on the
most recent results which served as input of the fit. The output of the fit
sets also limits on the Standard Model Higgs mass.


title:
Complete analysis of polarization effects in e gamma -> e gamma with
  REDUCE

abstract:
  Formulae for the matrix element squared of the process e gamma -> e gamma
with all four particles polarized are obtained using REDUCE.


title: Complete analysis of polarization effects in gamma gamma <-> e+ e-

abstract:
  Formulae for the cross section of the process gamma gamma <-> e+ e- with all
four particles polarized are obtained in the lowest order of the perturbation
theory using REDUCE.


title: Real and Virtual Compton Scattering in a Regge Approach

abstract:
  We study Real and Deeply Virtual Compton Scattering in a model based on Regge
trajectories and two-gluon exchange. In the kinematic regime of current
experiments, the hadronic component of the outgoing real photon plays a major
role. We analyze the spin structure of Compton scattering at large momentum
transfer and give predictions for several spin asymmetries. In the DVCS
channel, a fairly good agreement is obtained for the recently measured beam
spin and charge asymmetries.


title:
HIPPOPO - a Monte-Carlo generator for particle production in the
  Quark-Gluon String Model

abstract:
  We present the description of HIPPOPO (Hadron Induced Particle Production Off
Pomeron Outpour), a computer code aimed at the simulation of hadron production
in hadron-hadron collisions at high energies via the multipomeron exchange
mechanism. We briefly remind the theoretical inputs from the Quark-Gluon String
Model and give a detailed description of program components.


title: Soft and hard QCD

abstract:
  I review various theoretical questions that arise from data from HERA and the
Tevatron, and which are relevant for the LHC. They range from soft physics,
such as the total cross section, to hard physics, such as Higgs production. In
particular, I argue that the proton's gluon density is somewhat larger at small
$x$ than is currently accepted.


title: Comover Enhancement of Quarkonium Production

abstract:
  Quarkonium data suggest an enhancement of the hadroproduction rate from
interactions of the heavy quark pair with a comoving color field generated in
the hard gg -> Q\bar{Q} subprocess. We review the motivations and principal
consequences of this comover enhancement scenario (CES).


title:
Infrared Exponents and the Running Coupling of Landau gauge QCD and
  their Relation to Confinement

abstract:
  The infrared behaviour of the gluon and ghost propagators in Landau gauge QCD
is reviewed. The Kugo-Ojima confinement criterion and the Gribov-Zwanziger
horizon condition result from quite general properties of the ghost
Dyson-Schwinger equation. The numerical solutions for the gluon and ghost
propagators obtained from a truncated set of Dyson-Schwinger equations provide
an explicit example for the anticipated infrared behaviour. The results are in
good agreement with corresponding lattice data obtained recently. The resulting
running coupling approaches a fix point in the infrared, $\alpha(0) =
8.92/N_c$. Two different fits for the scale dependence of the running coupling
are given and discussed.


title: NLO distributions for Higgs production at the LHC

abstract:
  We report on results for the NLO corrected differential distributions
$d\sigma/dp_T$ and $d\sigma/dy$ for the process $p + p\to H + 'X'$, where $p_T$
and $y$ are the transverse momentum and rapidity of the Higgs-boson $H$
respectively and $X$ denotes the inclusive hadronic state. All QCD partonic
subprocesses have been included. The computation is carried out in the limit
that the top-quark mass $m_t \to \infty$. Our calculations reveal that the
dominant subprocess is given by $g + g \to H + 'X'$ but the reaction $g +
q(\bar q) \to H + 'X'$ is not negligible. Also the $K$-factor representing the
ratio between the next-to-leading order and leading order differential
distributions varies from 1.4 to 1.7 depending on the kinematic region and
choice of parton densities.


title: Global analysis of neutrino oscillation data in four-neutrino schemes

abstract:
  We present an analysis of the global neutrino oscillation data in terms of
four-neutrino mass schemes. We find that the strong preference of oscillations
into active neutrinos implied by the latest solar as well as atmospheric
neutrino data allows to rule out (2+2) mass schemes, whereas (3+1) schemes are
strongly disfavoured by short-baseline experiments. Our analysis shows that
four-neutrino oscillations do not provide a satisfactory description of the
global neutrino oscillation data including the LSND result.


title: The $\gamma^* p$ total cross section and elastic diffraction

abstract:
  The empirical scaling law, wherein the total photoabsorption cross section
depends on the single variable $\eta=(Q^2 + m^2_0)/\Lambda^2 (W^2)$, provides
empirical evidence for saturation in the sense of $\sigma_{\gamma^* p} (W^2,
Q^2) / \sigma_{\gamma p} (W^2) \to 1$ for $W^2 \to \infty$ at fixed $Q^2$. The
total photoabsorption cross section is related to elastic diffraction in terms
of a sum rule. The excess of diffractive production over the elastic component
is due to inelastic diffraction that contains the production of hadronic states
of higher spins. Motivated by the diffractive mass spectrum, the generalized
vector dominance/color dipole picture (GVD/CDP) is extended to successfully
describe the DIS data in the full region of $x \le 0.1$, all $Q^2 \ge 0$, where
the diffractive two-gluon-exchange mechanism dominates.


title: Exclusive production of dijets in QCD

abstract:
  We study in a framework of QCD collinear factorization the processes of a
pion and a photon diffraction dissociation into two jets. The structure of
non-factorizable contributions is discussed. We argue that coherent production
of hard dijets by linearly polarized real photons can provide direct evidence
for chirality violation in hard processes, the first measurement of the
magnetic susceptibility of the quark condensate and the photon distribution
amplitude.


title: An Introduction to 5-Dimensional Extensions of the Standard Model

abstract:
  We give a pedagogical introduction to the physics of large extra dimensions.
We focus our discussion on minimal extensions of the Standard Model in which
gauge fields may propagate in a single, compact extra dimension while the
fermions are restricted to a 4-dimensional Minkowski subspace. First, the basic
ideas, including an appropriate gauge-fixing procedure in the
higher-dimensional context, are illustrated in simple toy models. Then, we
outline how the presented techniques can be extended to more realistic
theories. Finally, we investigate the phenomenology of different minimal
Standard Model extensions, in which all or only some of the SU(2)$_L$ and
U(1)$_Y$ gauge fields and Higgs bosons feel the presence of the fifth
dimension. Bounds on the compactification scale between 4 and 6 TeV, depending
on the model, are established by analyzing existing data.


title: Higgs physics at a high luminosity e+e- linear collider

abstract:
  Since the TESLA Technical Design Report (TDR) was published in 2001, the
physics programme of an electron-positron linear collider (LC) has been further
developed and a wide consensus has been reached on the physics case and the
need for a high luminosity LC with center-of-mass energy up to about 1 TeV as
the next worldwide high-energy physics project. The study of the Higgs boson
properties represents a significant part of this physics programme. New studies
demonstrate that a LC providing 1000 fb-1 of data at center-of-mass energies of
at least 500 GeV, is an excellent Higgs boson analyzer for a wide range of
masses. A summary of preliminary results of these studies and their
implications for identifying the nature of the Higgs sector and for
constraining the parameter space of extended models is given. The focus is on
recent developments and the relation to the LHC is addressed.