title: Gapless two-flavor color superconductor

abstract:
  A new, gapless two-flavor color superconducting phase that appears under
conditions of local charge neutrality and $\beta$-equilibrium is revealed. In
this phase, the symmetry of the ground state is the same as in the conventional
two-flavor color superconductor. In the low-energy spectrum of this phase,
however, there are only two gapped fermionic quasiparticles, and the other four
quasiparticles are gapless. The origin and the basic properties of the gapless
two-flavor color superconductor are discussed. This phase is a natural
candidate for quark matter in cores of compact stars.


title: Anomalous Action in Gauge Invariant, Nonlocal, Dynamical Quark Model

abstract:
  Anomalous sector of chiral Lagrangian is calculated in a gauge invariant,
nonlocal, dynamical quark model. The Wess-Zumino term is proved coming from two
kinds of sources, one is independent on and another dependent on dynamical
quark self energy
  $\Sigma(k^2)$. $p^6$ and more higher order anomalous sectors come only from
  $\Sigma(k^2)$ dependent source. After some cancellation, standard
  Wess-Zumino action is obtained.


title: Chromodynamic Lensing and Transverse Single Spin Asymmetries

abstract:
  We illustrate how an axial asymmetry in impact parameter dependent parton
distributions can give rise to an axial asymmetry for the transverse momentum
of the leading quark in the photo-production of hadrons. The effect is related
to the asymmetry originating from the Wilson-line phase factor in gauge
invariant Sivers distributions. The single spin asymmetry arising from the
asymmetry of the impact parameter dependent parton distributions is shown to
exhibit a pure $\sin \phi$ dependence.


title: Nonleptonic B Decays and Rare Decays

abstract:
  We review selected topics in the field of nonleptonic and rare B meson
decays. We concentrate in particular on exclusive channels, discussing recent
developments based on the concepts of factorization in QCD and the heavy-quark
limit.


title:
A global test of factorization for nucleon-nucleon, gamma p and gamma
  gamma scattering

abstract:
  The purpose of this note is to show that the cross section factorization
relation $\sigma_{nn}(s)/\sigma_{\gamma p}(s) = \sigma_{\gamma p}(s)/
\sigma_{\gamma\gamma}(s)$ is satisfied experimentally in the energy domain
$8\le\sqrt s\le 2000$ GeV, where the $\sigma$'s are total cross sections and
$nn$ denotes the even portion of the $pp$ and $\pbar p$ total cross section. A
convenient phenomenological paramaterization for a global simultaneous fit to
the $pp$, $\pbar p$, $\gamma p$ and $\gamma\gamma$ total cross section data
together with the $\rho$-value data for $pp$ and $\pbar p$ is provided by using
real analytic amplitudes. Within experimental errors, we show that
factorization is satisfied when we unfold the published $\gamma\gamma$ data
which had averaged the cross sections obtained by using the two different
PHOJET and PYTHIA Monte Carlo results. Our analysis clearly favors the PHOJET
results and suggests that the additive quark model, together with vector meson
dominance, allows one to compute $\sigma_{\gamma p}(s)$ and
$\sigma_{\gamma\gamma}(s)$ from $\sigma_{nn}(s)$ with essentially no free
parameters. The universal $\rho$-value predicted by our fit, {\em i.e.,}
$\rho_{nn} = \rho_{\gamma p} = \rho_{\gamma\gamma}$, is compared to the
$\rho$-value obtained by a QCD-inspired analysis of $\pbar p$ and $pp$ data,
including the p-air cross sections from cosmic rays. The $\rho$-values obtained
from the two techniques are essentially indistinguishable in the energy region
$8\le\sqrt s\le 2000$ GeV, giving us increased confidence in our
parameterization of the cross sections needed for the factorization relation.


title: Thermal Field Theory and Generalized Light Front Coordinates

abstract:
  The dependence of thermal field theory on the surface of quantization and on
the velocity of the heat bath is investigated by working in general coordinates
that are arbitrary linear combinations of the Minkowski coordinates. In the
general coordinates the metric tensor $g_{\bar{\mu\nu}}$ is non-diagonal. The
Kubo, Martin, Schwinger condition requires periodicity in thermal correlation
functions when the temporal variable changes by an amount
$-i\big/(T\sqrt{g_{\bar{00}}})$. Light front quantization fails since
$g_{\bar{00}}=0$, however various related quantizations are possible.


title:
Factorization Theorems for High Energy nn, gamma p and gamma gamma
  Scattering

abstract:
  The robustness of the factorization theorem for total cross sections,
$\sigma_{nn}/\sigma_{\gamma p}=\sigma_{\gamma p}/\sigma_{\gamma\gamma}$,
originally proved by Block and Kaidalov\cite{bk} for $nn$ (the even portion of
$pp$ and $\pbar p$ scattering), $\gamma p$ and $\gamma\gamma$ scattering, is
demonstrated. Factorization theorems for the nuclear slope parameter $B$ and
$\rho$, the ratio of the real to the imaginary portion of the forward
scattering amplitude, are derived under very general conditions, using
analyticity and the optical theorem.


title: The Weak Charge of the Proton and New Physics

abstract:
  We address the physics implications of a precision determination of the weak
charge of the proton, QWP, from a parity violating elastic electron proton
scattering experiment to be performed at the Jefferson Laboratory. We present
the Standard Model (SM) expression for QWP including one-loop radiative
corrections, and discuss in detail the theoretical uncertainties and missing
higher order QCD corrections. Owing to a fortuitous cancellation, the value of
QWP is suppressed in the SM, making it a unique place to look for physics
beyond the SM. Examples include extra neutral gauge bosons, supersymmetry, and
leptoquarks. We argue that a QWP measurement will provide an important
complement to both high energy collider experiments and other low energy
electroweak measurements. The anticipated experimental precision requires the
knowledge of the order alpha_s corrections to the pure electroweak box
contributions. We compute these contributions for QWP, as well as for the weak
charges of heavy elements as determined from atomic parity violation.


title: WMAP and Inflation

abstract:
  We assay how inflationary models whose properties are dominated by the
dynamics of a single scalar field are constrained by cosmic microwave
background (CMB) data from the Wilkinson Microwave Anisotropy Probe (WMAP). We
classify inflationary models in a plane defined by the horizon-flow parameters.
Our approach differs from that of the WMAP collaboration in that we analyze
only WMAP data and take the spectral shapes from slow-roll inflation rather
than power-law parameterizations of the spectra. The only other information we
use is the measurement of $h$ from the Hubble Space Telescope (HST) Key
Project. We find that the spectral index of primordial density perturbations
lies in the 1\sigma range 0.94<n_s<1.04 with no evidence of running. The ratio
of the amplitudes of tensor and scalar perturbations is smaller than 0.61 and
the inflationary scale is below 2.8\times 10^{16} GeV, both at the 2\sigma C.L.
No class of inflation or ekpyrotic/cyclic models is excluded. The \lambda
\phi^4 potential is excluded at 3\sigma only if the number of e-folds is
assumed to be less than 45.


title: Baryogenesis and the New Cosmology

abstract:
  In this talk I begin with a brief review of the status of approaches to
understanding the origin of the baryon asymmetry of the universe (BAU). I then
describe a recent model unifying three seemingly-distict problems facing
particle cosmology: the origin of inflation, the generation of the BAU and the
nature of dark energy.


title:
rho propagation and dilepton production at finite pion density and
  temperature

abstract:
  We study the propagation properties of the rho vector in a dense and hot pion
medium. We introduce a finite value of the chemical potential associated to a
conserved pion number and argue that such description is valid during the
hadronic phase of a relativistic heavy-ion collision, between chemical and
thermal freeze-out, where the strong interaction drives pion number to a fixed
value. By invoking vector dominance and rho saturation, we also study the
finite pion density effects into the low mass dilepton production rate. We find
that the distribution moderately widens and the position of the peak shifts
toward larger values of the pair invariant mass, at the same time that the
height of the peak decreases when the value of the chemical potential grows. We
conclude by arguing that for the description of the dilepton spectra at
ultra-relativistic energies, such as those of RHIC and LHC, the proper
treatment of the large pion density might be a more important effect to
consider than the influence of a finite baryon density.


title: Symmetries and Mass Predictions of the Supersymmetric Quark Model

abstract:
  QCD justification of SU(m/n) supergroups are shown to provide a basis for the
existence of an approximate hadronic supersymmetry. Effective Hamiltonian of
the relativistic quark model is derived, leading to hadronic mass formulae in
remarkable agreement with experiments. Bilocal approximation to hadronic
structure and incorporation of color through octonion algebra (based on
quark-antidiquark symmetry) is also shown to predict exotic diquark-antidiquark
($D-\bar{D}$) meson states. A minimal supersymmetric sceme based on $SU(3)^c
\times SU(6/1)$ that excludes exotics is constructed. Symmetries of three quark
systems and possible relativistic formulation of the quark model through the
spin realization of Wess-Zumino algebra is presented.


title: Affleck-Dine mechanism with negative thermal logarithmic potential

abstract:
  We investigate whether the Affleck-Dine (AD) mechanism works when the
contribution of the two-loop thermal correction to the potential is negative in
the gauge-mediated supersymmetry breaking models. The AD field is trapped far
away from the origin by the negative thermal correction for a long time until
the temperature of the universe becomes low enough. The most striking feature
is that the Hubble parameter becomes much smaller than the mass scale of the
radial component of the AD field, during the trap. Then, the amplitude of the
AD field decreases so slowly that the baryon number is not fixed even after the
onset of radial oscillation. The resultant baryon asymmetry crucially depends
on whether the Hubble parameter, $H$, is larger than the mass scale of the
phase component of the AD field, $M_\theta$, at the beginning of oscillation.
If $H < M_\theta$ holds, the formation of Q balls plays an essential role to
determine the baryon number, which is found to be washed out due to the
nonlinear dynamics of Q-ball formation. On the other hand, if $H > M_\theta$
holds, it is found that the dynamics of Q-ball formation does not affect the
baryon asymmetry, and that it is possible to generate the right amount of the
baryon asymmetry.


title: Yukawa Coupling Unification in Supersymmetric Models

abstract:
  We present an updated assessment of the viability of t-b-tau Yukawa coupling
unification in supersymmetric models. For the superpotential Higgs mass
parameter mu>0, we find unification to less than 1% is possible, but only for
GUT scale scalar mass parameter m_{16}~8-20 TeV, and small values of gaugino
mass m_{1/2}<400 GeV. Such models require that a GUT scale mass splitting
exists amongst Higgs scalars with m_{H_u}^2<m_{H_d}^2. Viable solutions lead to
a radiatively generated inverted scalar mass hierarchy, with third generation
and Higgs scalars being lighter than other sfermions. These models have very
heavy sfermions, so that unwanted flavor changing and CP violating SUSY
processes are suppressed, but may suffer from some fine-tuning requirements.
While the generated spectra satisfy b->s gamma and (g-2)_mu constraints, there
exists tension with the dark matter relic density unless m_{16}<3 TeV. These
models offer prospects for a SUSY discovery at the Fermilab Tevatron collider
via the search for chargino_1 neutralino_2 -> 3 leptons events, or via gluino
pair production. If mu<0, Yukawa coupling unification to less than 5% can occur
for m_{16} and m_{1/2}>1-2 TeV. Consistency of negative mu Yukawa unified
models with b->s gamma, (g-2)_mu, and relic density all imply very large values
of m_{1/2} typically greater than about 2.5 TeV, in which case direct detection
of sparticles may be a challenge even at the LHC.


title:
Direct CP Violation In B --> pi^+ pi^- V With rho^0--omega Mixing
  Effects: Phenomenological Approach

abstract:
  We present a detailed study of direct CP violation and branching ratios in
the channels $B^{0,\pm} \to \pi^{+}\pi^{-} V^{0,\pm}$, where $V$ is a vector
meson ($K^{*
  0,\pm}$ or $\rho^{\pm}$). Emphasis is placed upon the important role played
by ${{\rho}^{0}}-{\omega}$ mixing effects in the estimation of the CP-violating
asymmetry parameter, $a_{cp}$, associated with the difference of $B$ and $\bar
B$ decay amplitudes. A thorough study of the helicity amplitudes is presented
as a function of the pion-pion invariant mass. All of the calculations and
simulations considered correspond to channels which will be analyzed at the
LHCb facility.


title:
Extraction of the x-dependence of the non-perturbative QCD b-quark
  fragmentation distribution component

abstract:
  Using recent measurements of the b-quark fragmentation distribution obtained
in $e^+e^- \to b \bar{b}$ events registered at the Z pole, the non-perturbative
QCD component of the distribution has been extracted independently of any
hadronic physics modelling. This distribution depends only on the way the
perturbative QCD component has been defined. When the perturbative QCD
component is taken from a parton shower Monte-Carlo, the non-perturbative QCD
component is rather similar with those obtained from the Lund or Bowler models.
When the perturbative QCD component is the result of an analytic NLL
computation, the non-perturbative QCD component has to be extended in a
non-physical region and thus cannot be described by any hadronic modelling. In
the two examples used to characterize these two situations, which are studied
at present, it happens that the extracted non-perturbative QCD distribution has
the same shape, being simply translated to higher-x values in the second
approach, illustrating the ability of the analytic perturbative QCD approach to
account for softer gluon radiation than with a parton shower generator.


title: Mass Suppression in Octet Baryon Production

abstract:
  There is a striking suppression of the cross section for production of octet
baryons in $e^+ e ^-$ annihilation, as the mass of the produced hadron
increases. We present a simple parametrization for the fragmentation functions
into octet baryons guided by two input models: the SU(3) flavor symmetry part
is given by a quark-diquark model, and the baryon mass suppression part is
inspired by the string model. We need only eight free parameters to describe
the fragmentation functions for all octet baryons. These free parameters are
determined by a fit to the experimental data of octet baryon production in $e^+
e ^-$ annihilation. Then we apply the obtained fragmentation functions to
predict the cross section of the octet baryon production in charged lepton DIS
and find consistency with the available experimental data. Furthermore, baryon
production in $pp$ collisions is suggested to be an ideal domain to check the
predicted mass suppression.


title: Quintessential Enhancement of Dark Matter Abundance

abstract:
  The presence of a dynamical scalar field in the early universe could
significantly affect the `freeze-out' time of particle species. In particular,
it was recently shown that an enhancement of the relic abundance of neutralinos
can be produced in this way. We examine under which conditions this primordial
scalar field could be identified with the Quintessence scalar and find, through
concrete examples, that modifications to the standard paradigm are necessary.
We discuss two possible cases: the presence of more scalars and the switching
on of an interaction.


title: Radion Assisted Gauge Inflation

abstract:
  We propose an extension to the recently proposed extranatural or gauge
inflation scenario in which the radius modulus field around which the Wilson
loop is wrapped assists inflation as it shrinks. We discuss how this might lead
to more generic initial conditions for inflation.


title: New hadrons as ultra-high energy cosmic rays

abstract:
  Ultra-high energy cosmic ray (UHECR) protons produced by uniformly
distributed astrophysical sources contradict the energy spectrum measured by
both the AGASA and HiRes experiments, assuming the small scale clustering of
UHECR observed by AGASA is caused by point-like sources. In that case, the
small number of sources leads to a sharp exponential cutoff at the energy
E<10^{20} eV in the UHECR spectrum. New hadrons with mass 1.5-3 GeV can solve
this cutoff problem. For the first time we discuss the production of such
hadrons in proton collisions with infrared/optical photons in astrophysical
sources. This production mechanism, in contrast to proton-proton collisions,
requires the acceleration of protons only to energies E<10^{21} eV. The diffuse
gamma-ray and neutrino fluxes in this model obey all existing experimental
limits. We predict large UHE neutrino fluxes well above the sensitivity of the
next generation of high-energy neutrino experiments. As an example we study
hadrons containing a light bottom squark. These models can be tested by
accelerator experiments, UHECR observatories and neutrino telescopes.


title: Two-Loop Form Factors in QED

abstract:
  We evaluate the on shell form factors of the electron for arbitrary momentum
transfer and finite electron mass, at two loops in QED, by integrating the
corresponding dispersion relations, which involve the imaginary parts known
since a long time. The infrared divergences are parameterized in terms of a
fictitious small photon mass. The result is expressed in terms of Harmonic
Polylogarithms of maximum weight 4. The expansions for small and large momentum
transfer are also given


title: Nonanomalous Discrete R-Symmetry and Light Gravitino

abstract:
  We discuss nonanomalous R-symmetry in the supersymmetric grand unified
theories. In particular, we explore anomaly-free solutions predicting the
gravitino mass in the range of $10^{-3} eV \lsim m_{3/2} \lsim 1 TeV$ when the
$\mu$-parameter is fixed to be $\mu \simeq 1 TeV$. In the minimal SU(5) GUT, we
have shown that $\mu \simeq 1 TeV$ is obtained only if the gravitino is
ultralight with mass $m_{3/2} \sim 10^{-3} eV$. If extra fields ${\bf
5}\oplus{\bf 5^*}$ or ${\bf 10}\oplus{\bf 10^*}$ are introduced, many solutions
predicting $m_{3/2} \gsim 10^{-3} eV$ are found. The R-parity is violated due
to the vacuum expectation value of the superpotential, but it is controlled by
the discrete R-symmetry. We find that the R-parity violating couplings are
naturally suppressed much below the experimental bounds for some charge
assignments. These charge assignments predict light gravitino with masses of
order ${\cal O}(10^{-3} eV)$--${\cal O}(1 MeV)$. These discrete R-symmetries
can be considered as solutions to the $\mu$-problem in low energy supersymmetry
breaking models such as the gauge mediation.


title: Kaluza-Klein Picture and Nucleon-Nucleon Dynamics at Low Energies

abstract:
  In this note we present additional arguments in favour of Kaluza and Klein
picture of the world. We show that geniusly simple formula provided by
Kaluza-Klein approach gives an excellent description for the mass spectrum of
two-nucleon system. It has also been established that the experimental data
obtained at low energies where the nucleon-nucleon dynamics has been studied
reveal a special sort of (super)symmetry between fermionic (dibaryon) and
bosonic states predicted by Kaluza-Klein scenario.


title:
Transport coefficients in high temperature gauge theories: (II) Beyond
  leading log

abstract:
  Results are presented of a full leading-order evaluation of the shear
viscosity, flavor diffusion constants, and electrical conductivity in high
temperature QCD and QED. The presence of Coulomb logarithms associated with
gauge interactions imply that the leading-order results for transport
coefficients may themselves be expanded in an infinite series in powers of
1/log(1/g); the utility of this expansion is also examined. A
next-to-leading-log approximation is found to approximate the full
leading-order result quite well as long as the Debye mass is less than the
temperature.


title:
The origin of the first and third generation fermion masses in a
  technicolor scenario

abstract:
  We argue that the masses of the first and third fermionic generations, which
are respectively of the order of a few MeV up to a hundred GeV, are originated
in a dynamical symmetry breaking mechanism leading to masses of the order
$\alpha \mu$, where $\alpha$ is a small coupling constant and $\mu$, in the
case of the first fermionic generation, is the scale of the dynamical quark
mass ($\approx 250$ MeV). For the third fermion generation $\mu$ is the value
of the dynamical techniquark mass ($\approx 250$ GeV). We discuss how this
possibility can be implemented in a technicolor scenario, and how the mass of
the intermediate generation is generated.


title: Scalar density fluctuation at critical end point in NJL model

abstract:
  Soft mode near the critical end point in the phase diagram of two-flavor
Nambu--Jona-Lasinio (NJL) model is investigated within the leading 1/N_c
approximation with N_c being the number of the colors. It is explicitly shown
by studying the spectral function of the scalar channel that the relevant soft
mode is the scalar density fluctuation, which is coupled with the quark number
density, while the sigma meson mode stays massive.


title: Triplicated Trinification

abstract:
  Gauge-coupling unification is just as successful in the standard model with
six Higgs doublets as it is in the minimal supersymmetric standard model.
However, the gauge couplings unify at 10^14 GeV, which yields rapid proton
decay in the SU(5) model. I propose that the grand-unified gauge group is
instead SU(3)_c x SU(3)_L x SU(3)_R, in which baryon number is conserved by the
gauge interactions.


title: A modern view of wide-angle exclusive scattering

abstract:
  The basic theoretical ideas of the handbag mechanism for wide-angle exclusive
scattering reactions are discussed and, with regard to the present experimental
program carried out at JLab, its application to Compton scattering is reviewed
in some detail. Results for other wide-angle reactions such as two-photon
annihilations into pairs of hadrons or virtual Compton scattering are presented
as well.


title: Global DGLAP fit analyses of the nPDF: EKS98 and HKM

abstract:
  The DGLAP analyses of the nuclear parton distribution functions (nPDF) based
on the global fits to the data are reviewed, and the results from EKS98 and HKM
are compared. The usefulness of measuring hard probes in $pA$ collisions, at
the LHC in particular, is demonstrated.


title:
B-meson production in p\bar p collisions at Tevatron with
  k_T-factorization

abstract:
  In the framework of the k_T-factorization QCD approach we consider the
production of b quark pairs in p\bar p collisions at the Fermilab Tevatron. We
investigate the dependence of the b quark, B meson and decay muon differential
cross sections on the different forms of unintegrated gluon distributions. The
analysis also covers the azimuthal correlations between the b and \bar b quarks
and their decay muons. Our theoretical results agree well with recent data
taken by the D0 and CDF collaborations at Tevatron. Finally, we present our
predictions for muon-muon and muon-jet cross sections at the Tevatron and CERN
LHC conditions.


title: Improved Variational Analysis of Deconfinement in SU(N) Gauge Theory

abstract:
  A variational analysis of the pure SU(N) gauge theory in 3+1 dimensions at
finite temperature is performed, extending the work of Kogan, Kovner and
Milhano in hep-ph/0208053 . A de-confining phase transition is found at a
temperature of 470 MeV, somewhat higher than lattice estimates. This value is
however rather sensitive, for reasons which are discussed. A more robust
quantity is the ratio of the transition temperature to the lightest glueball
mass in the model. This is 0.18, in agreement with the lattice estimate for
SU(3) to two significant figures. Ways of further improving the calculation are
discussed.


title: Last CPT-Invariant Hope for LSND Neutrino Oscillations

abstract:
  It is shown that the 99% confidence limits from the analyses of the data of
cosmological and neutrino experiments imply a small marginally allowed region
in the space of the neutrino oscillation parameters of 3+1 four-neutrino mixing
schemes. This region can be confirmed or falsified by experiments in the near
future.


title:
The lightest Higgs Boson of mSUGRA, mGMSB and mAMSB at Present and
  Future Colliders: Observability and Precision Analyses

abstract:
  We investigate the physics of the lightest CP-even MSSM Higgs boson at the
Tevatron, the LHC, a linear e+e- collider, a gamma gamma collider and a mu+mu-
collider. The analysis is performed in the three most prominent soft
SUSY-breaking scenarios, mSUGRA, mGMSB and mAMSB. For all colliders the
observability and parameter regions with suppressed production cross sections
(compared to a SM Higgs boson with the same mass) are investigated. For the
lepton and photon colliders the potential is analyzed of precision measurements
of the branching ratios of the light CP-even Higgs boson for obtaining indirect
bounds on the mass of the CP-odd Higgs boson and the high-energy parameters of
the soft SUSY-breaking scenarios. In regions of the parameter space where the
LHC can detect the heavy Higgs bosons, precision measurements of the properties
of the light Higgs boson at the linear collider can provide valuable
information for distinguishing between the mSUGRA, mGMSB and mAMSB scenarios.


title: Neutrinos from the Big Bang

abstract:
  The standard Big Bang cosmology predicts the existence of an, as yet
undetected, relic neutrino background, similar to the photons observed in the
cosmic microwave background. If neutrinos have mass, then such relic neutrinos
are a natural candidate for the dark matter of the universe, and indeed were
the first particles to be proposed for this role. This possibility has however
been increasingly constrained by cosmological considerations, particularly of
large-scale structure formation, thus yielding stringent bounds on neutrino
masses, which have yet to be matched by laboratory experiments. Another probe
of relic neutrinos is primordial nucleosynthesis which is sensitive to the
number of neutrino types (including possible sterile species) as well to any
lepton asymmetry. Combining such arguments with the experimental finding that
neutrino mixing angles are large, excludes the possibility of a large asymmetry
and disfavours new neutrinos beyond those now known.


title: Unification of Gauge, Higgs and Matter in Extra Dimensions

abstract:
  We consider the unification of gauge, Higgs as well as the matter fields in a
6D N=2 supersymmetric SU(8) gauge theory. The gauge symmetry SU(8) is broken
down to SU(4) x SU(2)_L x SU(2)_R x U(1)^2 in 4D through T^2/Z_6 orbifold
compactification, and the theory is reduced to 4D N=1 supersymmetric Pati-Salam
model. The electroweak Higgs fields as well as the third family of fermions are
unified in the 6D N=2 gauge multiplet. The 6D bulk gauge interaction provides
both gauge and Yukawa interactions for the third family predicting \alpha_1 =
\alpha_2 = \alpha_3 = \alpha_t = \alpha_b = \alpha_tau at the unification
scale, in good agreement with experiment. Incorporation of the first and second
family as well as other orbifolds are also briefly discussed.


title: $B_{s,d} \to \gamma\gamma$ Decay with the Fourth Generation

abstract:
  We calculate the branching ratios of $B_{s,d}\to \gamma \gamma$ decay in the
sequential fourth generation model. We find that the theoretical values of the
branching ratios, ${\rm BR}(B_{s}\to\gamma\gamma)$, including the contributions
of $t'$, are much different from the minimal standard model (SM) predictions.
The new physics contribution can provide one to two orders enhancement to the
standard model prediction of ${\rm BR}(B_{s}\to\gamma\gamma)$. But due to the
tiny values of 4th generation CKM matrix element $V_{t'd}^* V_{t'b}$, the new
physics effect on ${\rm BR}(B_{d}\to\gamma\gamma)$ is very small and can not be
distinct from the SM prediction. It is shown that the decay $B_s\to
\gamma\gamma$ can give the test of new physics signals from the 4th generation
model.


title: Ultrahigh Energy Neutrinos

abstract:
  The ultrahigh energy neutrino cross section is well understood in the
standard model for neutrino energies up to 10$^{12}$ GeV. Test of neutrino
oscillations ($\nu_\mu\leftrightarrow\nu_\tau$) from extragalactic sources of
neutrinos are possible with large underground detectors. Measurments of
horizontal air shower event rates at neutrino energies above 10$^{10}$ GeV will
be able to constrain nonstandard model contributions to the neutrino-nucleon
cross section, e.g., from mini-black hole production.


title: Anatomy of QCD Strings and Saturation Effects in High-Energy Scattering

abstract:
  We develop a model to compute high-energy reactions of hadrons and photons.
The perturbative interaction is described by gluon exchange and the
non-perturbative interaction by the stochastic vacuum model which leads to
quark-confinement in dipoles via a string of color fields. We study the QCD
structure of the dipole-dipole scattering in momentum space focussing
especially on interactions between strings. We represent the string as a
collection of stringless dipoles, show confinement effects in high-energy
scattering and calculate unintegrated gluon distributions of hadrons and
photons. In the impact parameter space of the scattering process we investigate
the unitarity limit of the S-matrix. We calculate the impact parameter profiles
for proton-proton and photon-proton scattering, determine the energy values at
which the profiles saturate at the black disc limit, estimate the impact
parameter dependent gluon distribution of the proton and discuss gluon
saturation. We compare the model results for p p, pi p, K p, gamma p and gamma
gamma reactions with experimental data and identify saturation effects in
experimental observables.


title: Subtraction terms at NNLO

abstract:
  Perturbative calculations at next-to-next-to-leading order for multi-particle
final states require a method to cancel infrared singularities. I discuss the
subtraction method at NNLO. As a concrete example I consider the leading-colour
contributions to e+ e- --> 2 jets. This is the simplest example which exhibits
all essential features. For this example, explicit subtraction terms are given,
which approximate the four-parton and three-parton final states in all double
and single unresolved limits, such that the subtracted matrix elements can be
integrated numerically.


title:
Implications of partially degenerate neutrinos at a high scale in the
  light of KamLAND and WMAP

abstract:
  Electroweak radiative corrections can generate the neutrino (mass)$^2$
difference required for the large mixing angle solution (LMA) to the solar
neutrino problem if two of the neutrinos are assumed degenerate at high energy.
We test this possibility with the existing experimental knowledge of the low
energy neutrino mass and mixing parameters. We derive restrictions on ranges of
the high scale mixing matrix elements and obtain predictions for the low energy
parameters required in order to get the LMA solution of the solar neutrino
problem picked out by KamLAND. We find that in the case of standard model this
is achieved only when the (degenerate) neutrino masses lie in the range
$(0.7-2) \eV$ which is at odds with the cosmological limit $m_{\nu}<0.23 \eV$
(at $95 % C.L$) established recently using WMAP results. Thus SM radiative
corrections cannot easily generate the LMA solution in this scenario. However,
the LMA solution is possible in case of the MSSM electroweak corrections with
(almost) degenerate spectrum or with inverted mass hierarchy for limited ranges
in the high scale parameters.


title:
High-energy scattering amplitudes in QCD: from Minkowskian to Euclidean
  space

abstract:
  We shall discuss about some analytic properties of the high-energy
parton-parton (and hadron-hadron) scattering amplitudes in gauge theories, when
going from Minkowskian to Euclidean theory, and we shall see how they can be
related to the still unsolved problem of the s-dependence of the total
cross-section.


title:
Fluxes of atmospheric muons underwater depending on the small-x gluon
  density

abstract:
  The prompt muon contribution to the deep-sea atmospheric muon flux can serve
as a tool for probing into the small-x feature of the gluon density inside of a
nucleon, if the muon energy threshold could be lifted to 100 TeV. The prompt
muon flux underwater is calculated taking into consideration predictions of
recent charm production models in which the small-x behaviour of the gluon
distribution is probed. We discuss the possibility of distinguishing the PQCD
models of the charm production differing in the small-x exponent of the gluon
distribution, in measurements of the muon flux at energies 10-100 TeV with
neutrino telescopes.


title: Calculating Quenching Weights

abstract:
  We calculate the probability (``quenching weight'') that a hard parton
radiates an additional energy fraction due to scattering in spatially extended
QCD matter. This study is based on an exact treatment of finite in-medium path
length, it includes the case of a dynamically expanding medium, and it extends
to the angular dependence of the medium-induced gluon radiation pattern. All
calculations are done in the multiple soft scattering approximation
(Baier-Dokshitzer-Mueller-Peign\'e-Schiff--Zakharov ``BDMPS-Z''-formalism) and
in the single hard scattering approximation (N=1 opacity approximation). By
comparison, we establish a simple relation between transport coefficient, Debye
screening mass and opacity, for which both approximations lead to comparable
results. Together with this paper, a CPU-inexpensive numerical subroutine for
calculating quenching weights is provided electronically. To illustrate its
applications, we discuss the suppression of hadronic transverse momentum
spectra in nucleus-nucleus collisions. Remarkably, the kinematic constraint
resulting from finite in-medium path length reduces significantly the
transverse momentum dependence of the nuclear modification factor, thus leading
to consistency with the data measured at the Relativistic Heavy Ion Collider
(RHIC).


title:
Nonlinear corrections to the DGLAP equations; looking for the saturation
  limits

abstract:
  The effects of the first nonlinear corrections to the DGLAP equations are
studied in light of the HERA data. Saturation limits are determined in the
DGLAP+GLRMQ approach for the free proton and for the Pb nucleus.


title:
Lepton-flavor-violating decays L->l gamma gamma as a new probe of
  supersymmetry with broken R-parity

abstract:
  Lepton-flavor-violating decays of the type L->l gamma gamma (mu->e gamma
gamma, tau->e gamma gamma, and tau->mu gamma gamma) are proposed as new probes
of R-parity-violating supersymmetry. Non-penguin diagrams with a sneutrino that
decays into two photons via a triangle graph might trigger such decays even in
the absence of the corresponding radiative decays into one photon only, e.g.
mu->e gamma. Thus, processes of the type L->l gamma gamma may provide an
independent probe of new flavor physics.


title: Penguin induced (B -> eta) transition form factor in light cone QCD

abstract:
  We calculate the penguin form factor for the (B -> eta l^+ l^-) decay. This
form factor is calculated in light cone QCD sum rules, including contributions
from wave functions up to twist-4, as well as mass corrections of the light
(eta) meson.


title: Loop induced decays of the Little Higgs: H --> gg, gamma gamma

abstract:
  We analyze the loop induced decays of the Higgs boson into pairs of gluons
and photons in the Littlest Higgs model. We find that the deviation of the
partial widths for these decays relative to their Standard Model values scales
with 1/f^2, where f ~ TeV is the mass scale of the new heavy particles in the
model. For f = 1 TeV, Gamma(H -> gg) is reduced by 6-10% and Gamma(H -> gamma
gamma) is reduced by 5-7% compared to their Standard Model values. While the
LHC and a linear e+e- collider would be sensitive to these deviations only for
relatively low values of f <~ 650 GeV, a photon collider could probe the
deviation in Gamma(H -> gamma gamma) up to f <~ 1.1 (0.7) TeV at the 2 (5)
sigma level.


title: New Ideas in Symmetry Breaking

abstract:
  Some old and new ideas on symmetry breaking, based on the presence of extra
dimensions that have been the subject of a very fast development and intensive
studies during the last years, will be presented in these lectures. Special
attention will be devoted to the various compactification mechanisms, including
toroidal and orbifold compactifications, and to non-trivial boundary conditions
or Scherk-Schwarz compactification. Also symmetry breaking by Wilson lines, or
Hosotani breaking characteristic of non-simply connected compact manifolds will
be analyzed in some detail. The different mechanisms will be applied to the
breaking of the most relevant symmetries in particle physics: supersymmetry and
gauge symmetry. The required background for these lectures is Quantum Field
Theory, Supersymmetry and some rudiments of Kaluza-Klein theory. The different
sections will be illustrated with examples.


title: Non-binding of Flavor-Singlet Hadrons to Nuclei

abstract:
  Strongly attractive color forces in the flavor singlet channel may lead to a
stable H dibaryon. Here we show that an H or other compact, flavor singlet
hadron is unlikely to bind to nuclei, so that bounds on exotic isotopes do not
exclude their stability. Remarkably, a stable H appears to evade other
experimental constraints as well, when account is taken of its expected compact
spatial wavefunction.


title: Particle physics implications of the WMAP neutrino mass bound

abstract:
  The recently published cosmological bound on the absolute neutrino masses
obtained from the Wilkinson Microwave Anisotropy Probe (WMAP) data has
important consequences for neutrino experiments and models. Taken at face
value, the new bound excludes the determination of the absolute neutrino mass
in the KATRIN experiment and disfavors a neutrino oscillation interpretation of
the LSND experiment. Combined with the KamLAND and Super-K data, the WMAP bound
defines an accessible range for the neutrinoless double beta decay amplitude.
The bound also impacts the Z-burst annihilation mechanism for resonant
generation of extreme-energy cosmic rays on the cosmic neutrino background in
two ways: it constrains the local overdensity of neutrino dark matter which is
not helpful, but it also limits the resonant energy to a favorable range. In
R-parity violating SUSY models neutrino masses are generated by trilinear and
bilinear lepton number violating couplings. The WMAP result improves the
constraints on these couplings over their existing values by an order of
magnitude.


title: Kinetic approach to electroweak baryogenesis

abstract:
  After a short review of baryogenesis mechanisms, we focus on the charge
transport mechanism at the electroweak scale, effective at strong electroweak
phase transitions. Starting from the one-loop Schwinger-Dyson equations for
fermions coupled to bosons, we present a derivation of the relevant kinetic
equations in the on-shell and gradient approximations, relevant for the thick
wall baryogenesis regime. We then discuss the CP-violating source from the
semiclassical force in the flow term, and compare it with the source arising in
the collision term of the kinetic equation. Finally, we summarize the results
concerning the chargino mediated baryogenesis in the Minimal Supersymmetric
Standard Model.


title: Choice of heavy baryon currents in QCD sum rules

abstract:
  In this paper we investigate the effects due to the mixing of two
interpolating currents for ground state baryons within the framework of Heavy
Quark Effective Theory using the QCD sum rule approach. Both two-point and
three-point sum rules, thus the mass, coupling constant and Isgur-Wise function
sum rules are considered. It is interesting to contrast those results with each
other. Based on the Isgur-Wise functions obtained in this paper, we also
analyze the effects of current mixing to Lambda-type and and Sigma-type
semi-leptonic decays Lambda_b-->Lambda_c\ell\bar\nu,
\Sigma_b-->\Sigma_c\ell\bar\nu and \Sigma_b-->\Sigma^*_c\ell\bar\nu. Decay
widths corresponding to various mixing parameters are obtained and can be
compared to the experimental data.


title: Jet Tomography in Heavy Ion Collisions

abstract:
  We review recent calculations of the probability that a hard parton radiates
an additional energy fraction due to scattering in spatially extended matter,
and we discuss their application to the suppression of leading hadron spectra
in heavy ion collisions at collider energies.


title: The Pomeron In Exclusive Vector Meson Production

abstract:
  An earlier developed model for vector meson photoproduction, based on a
dipole Pomeron exchange, is extended to electroproduction. Universality of the
non linear Pomeron trajectory is tested by fitting the model to ZEUS and H1
data as well as to CDF data on $\bar pp$ elastic scattering.


title: The Flavor Symmetry

abstract:
  Assuming that the lepton, quark and Higgs fields belong to the
three-dimensional reducible representation of the permutation group S_3, we
suggest a minimal S_3 invariant extension of the standard model. We find that
in the leptonic sector, the exact S_3 x Z_2 symmetry, which allows 6 real
independent parameters with two CP-violating phases, is consistent with
experimental data and predicts a maximal mixing of the atmospheric neutrinos,
and that the third neutrino is the lightest neutrino. With the exact S_3 only,
there are 10 real parameters and five phases in the quark sector.
  A set of values of these parameters that are consistent with experimental
observations is given.


title: CP non-invariance from scaling violations

abstract:
  In the framework of a renormalizable quantum field theory and taking the
example of neutral kaons, CP violation is shown to be a dynamical consequence
of the anomalous scaling of the fields; its connection to the mass splitting is
exhibited. It is also shown to be compatible with the normality condition
[M,M^\dagger]=0 for the renormalized mass matrix.


title: Electroweak radiative corrections to e+ e- -> nu nubar H

abstract:
  The complete electroweak O(alpha) radiative corrections to the Higgs-boson
production processes e+ e- -> nu_l anti-nu_l H (l=e,mu,tau) are calculated in
the electroweak Standard Model. For e+ e- -> nu_e anti-nu_e H, where ZH
production and W-boson fusion contribute, both production channels are added
coherently. The calculation of the corrections is described in some detail
including, in particular, the treatment of the Z-boson resonance in the
ZH-production channel. The discussion of numerical results focusses on the
total cross section as well as on angular and energy distributions of the Higgs
boson. In the Gmu-scheme, the bulk of the corrections is due to initial-state
radiation. The corrections turn out to reduce the total cross section by \sim
10% for high energies, where the W-boson fusion dominates. In this region, the
corrections depend only weakly on the energy and the production angle of the
Higgs boson. Based on an analysis of the leading universal corrections, a
simple improved Born approximation is introduced. This approximation describes
the corrected cross section within about 3%.


title: Updates to the Dualized Standard Model on Fermion Masses and Mixings

abstract:
  The Dualized Standard Model has scored a number of successes in explaining
the fermion mass hierarchy and mixing pattern. This note contains updates to
those results including (a) an improved treatment of neutrino oscillation free
from previous assumptions on neutrino masses, and hence admitting now the
preferred LMA solution to solar neutrinos, (b) an understanding of the
limitation of the 1-loop calculation so far performed, thus explaining the two
previous discrepancies with data, and (c) an analytic derivation and
confirmation of the numerical results previously obtained.


title: The $\eta_c(3654)$ and hyperfine splitting in charmonium

abstract:
  The hyperfine splitting for the 2S charmonium state is calculated and the
predicted number is $\Delta_{\rm HF}(2S) = 57 \pm 8$ MeV, being by derivation
the lower bound of this splitting. It results in $M(\eta_c(2S))= 3630 \pm 8$
MeV, which is smaller by two standard deviations than found in the Belle
experiment \cite{ref.01}, but close to the $\eta_c(2S)$ mass observed by the
same group in the experiment $e^+e^- \to J/\psi \eta_c$ \cite{ref.06} where
$M(\eta_c(2S)) = 3622 \pm 12$ MeV was found.


title:
Neutrino Masses with "Zero Sum" Condition: $m_{\nu_1} + m_{\nu_2} +
  m_{\nu_3} = 0$

abstract:
  It is well known that the neutrino mass matrix contains more parameters than
experimentalists can hope to measure in the foreseeable future even if we
impose CP invariance. Thus, various authors have proposed ansatzes to restrict
the form of the neutrino mass matrix further. Here we propose that $m_{\nu_1} +
m_{\nu_2} + m_{\nu_3} = 0$; this ``zero sum'' condition can occur in certain
class of models, such as models whose neutrino mass matrix can be expressed as
commutator of two matrices. With this condition, the absolute neutrino mass can
be obtained in terms of the mass-squared differences. When combined with the
accumulated experimental data this condition predicts two types of mass
hierarchies, with one of them characterized by $m_{\nu_3} \approx -2m_{\nu_1}
\approx -2 m_{\nu_2} \approx 0.063$ eV, and the other by $m_{\nu_1} \approx
-m_{\nu_2} \approx 0.054$ eV and $m_{\nu_3} \approx 0.0064$ eV. The mass ranges
predicted is just below the cosmological upper bound of 0.23 eV from recent
WMAP data and can be probed in the near future. We also point out some
implications for direct laboratory measurement of neutrino masses, and the
neutrino mass matrix.


title: Radiative Corrections to Parity Nonconserving Transitions in Atoms

abstract:
  The matrix element of a bound electron interacting with the nucleus through
exchange of a Z boson is studied for the gauge invariant case of
$2s_{1/2}-2p_{1/2}$ transitions in hydrogenic ions. The QED radiative
correction to the matrix element, which is $-\alpha/2\pi$ in lowest order, is
calculated to all orders in $Z\alpha$ using exact propagators. Previous
calculation of the first-order binding correction are confirmed both
analytically and by fitting the exact function at low $Z$. Consequences for the
interpretation of parity nonconservation in cesium are discussed.


title: Novel features in exclusive vector--meson production

abstract:
  It is shown that the universality of the initial and final state interactions
responsible for the transition between the on-- and off--mass shell states
leads to the energy independence of the ratio of exclusive $\rho$
electroproduction cross section to the total cross section. It is demonstrated
that the above universality and explicit mass dependence of the exponent in the
power--like energy behavior of the cross-section obtained in the approach based
on unitarity is in a quantitative agreement with the high--energy HERA
experimental data. We discuss also HERA results on angular distributions of
vector--meson production.


title: Topological hybrid inflation in brane world

abstract:
  In this paper we show that certain types of cosmological brane configurations
may induce topological inflation. In generic models for topological inflation,
there is a strict bound for the potential of the inflaton field. Naively, it
seems that these constraints can be removed if inflation starts with a hybrid
potential. However, it is difficult to combine topological inflation and hybrid
inflation, because of the difference in their initial conditions. In this
paper, we show some examples in which a novel type of topological inflation is
realized with the unconventional hybrid potential.


title: Extra dimensions and invisible decay of orthopositronium

abstract:
  We point out that some models with infinite additional dimension(s) of
Randall-Sundrum type predict the disappearance of orthopositronium (o-Ps) into
additional dimension(s). The experimental signature of this effect is the o-Ps
-> invisible decay of orthopositronium which may occur at a rate within three
orders of magnitude of the present experimental upper limit. This result
enhances existing motivations for a more sensitive search for this decay mode
and suggests additional directions for testing extra dimensions in non
accelerator experiments.


title: The quark - antiquark asymmetry of the strange sea of the nucleon

abstract:
  The strange sea of the proton is generally assumed to have quark - antiquark
symmetry. However it has been known for some time that non-perturbative
processes involving the meson cloud of the proton may break this symmetry.
Recently this has been of interest as it affects the analysis of the so-called
`NuTeV anomaly', and could explain the large discrepancy between the NuTeV
measurement of $\sin^{2} \theta_{W}$ and the currently accepted value. In this
paper we re-examine strange - anti-strange asymmetry using the meson cloud
model. We calculate contributions to the strange sea arising from fluctuations
in the proton wavefunction to states containing either Lambda or Sigma hyperons
together with either Kaons or pseudovector $K^{*}$ mesons. We find that we
should not ignore fluctuations involving $K^{*}$ mesons in this picture. The
strange sea asymmetry is found to be small, and is unlikely to affect the
analysis of the Llewellyn-Smith cross section ratios or the Paschos-Wolfenstein
relationship.


title: Forward-backward Asymmetry in $K^+\to\pi^+ \ell^+\ell^-$

abstract:
  We study the forward-backward asymmetries in the decays of $K^+\to\pi^+\ell^+
\ell^-$ ($\ell=e$ and $\mu$) in the presence of scalar or tensor terms. We find
that with the scalar (tensor) type interaction the asymmetry can be up to
${\cal O}(10^{-3})$ (${\cal O}(10^{-1}))$ and arbitrary large for the electron
and muon modes, respectively, without conflict with the experimental data. We
also discuss the cases in the minimal supersymmetric standard model where the
scalar terms can be induced. In particular we show that the asymmetry in
$K^+\to\pi^+\mu^+\mu^-$ can be as large as ${\cal O}(10^{-3})$ in the large
$\tan\beta$ limit, which can be tested in future experiments such as CKM at
Fermilab.


title: Time varying $\alpha$ in N=8 extended Supergravity

abstract:
  There has been some evidence that the fine structure "constant" $\alpha$ may
vary with time. We point out that this variation can be described by a scalar
field in some supergravity theory in our toy model, for instance, the N=8
extended supergravity in four dimensions which can be accommodated in M-theory.


title:
Abelian D-terms and the superpartner spectrum of anomaly-mediated
  supersymmetry breaking

abstract:
  We address the tachyonic slepton problem of anomaly mediated supersymmetry
breaking using abelian D-terms. We demonstrate that the most general extra U(1)
symmetry that does not disrupt gauge coupling unification has a large set of
possible charges that solves the problem. It is shown that previous studies in
this direction that added both an extra hypercharge D-term and another D-term
induced by B-L symmetry (or similar) can be mapped into a single D-term of the
general ancillary U(1)_a. The U(1)_a formalism enables identifying the sign of
squark mass corrections which leads to an upper bound of the entire
superpartner spectrum given knowledge of just one superpartner mass.


title: Progress in Nonequilibrium Quantum Field Theory

abstract:
  We review recent developments for the description of far-from-equilibrium
dynamics of quantum fields and subsequent thermalization.


title: Signals of the Abelian Z' boson within the analysis of the LEP2 data

abstract:
  The preliminary LEP data on the e^+e^- -> l^+l^- scattering are analysed to
establish a model-independent search for the signals of virtual states of the
Abelian Z' boson. The recently introduced observables give a possibility to
pick up uniquely the Abelian Z' signals in these processes. The mean values of
the observables are in accordance with the Z' existence. However, the accuracy
of the experimental data is deficient to detect the signal at more than the
1\sigma confidence level. The results of other model-independent fits and
further prospects are discussed.


title: Chiral Quark Model

abstract:
  In this talk I review studies of hadron properties in bosonized chiral quark
models for the quark flavor dynamics. Mesons are constructed from
Bethe--Salpeter equations and baryons emerge as chiral solitons. Such models
require regularization and I show that the two--fold Pauli--Villars
regularization scheme not only fully regularizes the effective action but also
leads the scaling laws for structure functions. For the nucleon structure
functions the present approach serves to determine the regularization
prescription for structure functions whose leading moments are not given by
matrix elements of local operators. Some numerical results are presented for
the spin structure functions.


title: Kaluza-Klein Picture and Mass Spectrum of Two-Pion System

abstract:
  In this note we present additional arguments in favour of Kaluza and Klein
picture of the world. In fact, we have shown that formula (\ref{KKpi}) provided
by Kaluza-Klein approach with the fundamental scale early calculated
(Eq.\ref{scale} \cite{1}) gives an excellent description for the mass spectrum
of two-pion system.


title:
How Well Can We Reconstruct the ttbar System Near its Threshold at
  Future e+e- Linear Colliders?

abstract:
  We developed a new method for full kinematical reconstruction of the ttbar
system near its threshold at future linear e+e- colliders. In the core of the
method lies likelihood fitting which is designed to improve measurement
accuracies of the kinematical variables that specify the final states resulting
from ttbar decays. The improvement is demonstrated by applying this method to a
Monte-Carlo ttbar sample generated with various experimental effects including
beamstrahlung, finite acceptance and resolution of the detector system, etc. In
most cases the fit brings a broad non-Gaussian distribution of a given
kinematical variable to a nearly Gaussian shape, thereby justifying
phenomenological analyses based on simple Gaussian smearing of parton-level
momenta. The standard deviations of the resultant distributions of various
kinematical variables are given in order to facilitate such phenomenological
analyses. A possible application of the kinematical fitting method and its
expected impact are also discussed.


title: Superweakly Interacting Massive Particles

abstract:
  We investigate a new class of dark matter: superweakly-interacting massive
particles (superWIMPs). As with conventional WIMPs, superWIMPs appear in
well-motivated particle theories with naturally the correct relic density. In
contrast to WIMPs, however, superWIMPs are impossible to detect in all
conventional dark matter searches. We consider the concrete examples of
gravitino and graviton cold dark matter in models with supersymmetry and
universal extra dimensions, respectively, and show that superWIMP dark matter
satisfies stringent constraints from Big Bang nucleosynthesis and the cosmic
microwave background.


title:
Minimal Supersymmetric Pati-Salam Theory: Determination of Physical
  Scales

abstract:
  We systematically study the minimal supersymmetric Pati-Salam theory, paying
special attention to the unification constraints. We find that the SU(4)_c
scale M_c and the Left-Right scale M_R lie in the range 10^{10} GeV < M_c <
10^{14} GeV, 10^{3} GeV < M_R <10^{10} GeV (with single-step breaking at
10^{10} GeV), giving a potentially accessible scale of parity breaking. The
theory includes the possibility of having doubly-charged supermultiplets at the
supersymmetry breaking scale; color octet states with mass of order M_R^2/M_c;
magnetic monopoles of intermediate mass that do not conflict with cosmology,
and a 'clean' (type I) form for the see-saw mechanism of neutrino mass.


title:
Unstable particles, gauge invariance and the Delta^{++} resonance
  parameters

abstract:
  The elastic and radiative pion(+)-proton scattering are studied in the
framework of an effective Lagrangian model for the Delta^{++} resonance and its
interactions. The finite width effects of this spin-3/2 resonance are
introduced in the scattering amplitudes through a complex mass scheme to
respect electromagnetic gauge invariance. The resonant pole (Delta^{++}) and
background contributions (rho^0, sigma, Delta and neutron states) are separated
according to the principles of the analytic S-matrix theory. The mass and width
parameters of the \Delta^{++} obtained from a fit to experimental data on the
total cross section are in agreement with the results of a model-independent
analysis based on the analytic S-matrix approach. The magnetic dipole moment
determined from the radiative pion-proton scattering is mu_Delta^{++}=(6.14 +/-
0.51) nuclear magnetons.


title: Summary of Working Group 2

abstract:
  Issues on the physics of, beamlines for, and detectors of neutrino
oscillation discussed in Working Group 2 at Nufact'02 are summarized.


title:
Effects of curvature and interactions on the dynamics of the
  deconfinement phase transition

abstract:
  We study the dynamics of first-order cofinement-deconfinement phase
transition through nucleation of hadronic bubbles in an expanding quark gluon
plasma in the context of heavy ion collisions for interacting quark and hadron
gas and by incorporating the effects of curvature energy. We find that the
interactions reduce the delay in the phase transition whereas the curvature
energy has a mixed behavior. In contrast to the case of early Universe phase
transition, here lower values of surface tension increase the supercooling and
slow down the hadronization process. Higher values of bag pressure tend to
speed up the transition. Another interesting feature is the start of the
hadronization process as soon as the QGP is created.


title:
$\pi\pi$ scattering S wave from the data on the reaction
  $\pi^-p\to\pi^0\pi^0n$

abstract:
  The results of the recent experiments on the reaction $\pi^-p\to\pi^0\pi^0n$
performed at KEK, BNL, IHEP, and CERN are analyzed in detail. For the I=0
$\pi\pi$ S wave phase shift $\delta^0_0$ and inelasticity $\eta^0_0$ a new set
of data is obtained. Difficulties emerging when using the physical solutions
for the $\pi^0\pi^0$ S and D wave amplitudes extracted with the partial wave
analyses are discussed. Attention is drawn to the fact that, for the
$\pi^0\pi^0$ invariant mass, m, above 1 GeV, the other solutions, in principle,
are found to be more preferred. For clarifying the situation and further
studying the $f_0(980)$ resonance thorough experimental investigations of the
reaction $\pi^-p\to\pi^0\pi^0n$ in the m region near the $K\bar K$ threshold
are required.


title: General formulae for f1 --> f2 gamma

abstract:
  At one-loop level the decay f1 --> f2 gamma, where f1 and f2 are two spin-1/2
particles with the same electric charge, is mediated by a boson B and a
spin-1/2 fermion F. The boson B may have either spin 0 - interacting with the
fermions through Dirac matrices 1 and gamma5 - or spin 1 - with V+A and V-A
couplings to the fermions. I give general formulae for the one-loop electroweak
amplitude of f1 --> f2 gamma in all these cases.


title: Right-Handed Sneutrinos as Curvatons

abstract:
  We consider the possibility that a right-handed sneutrino can serve as the
source of energy density perturbations leading to structure formation in
cosmology. The cosmological evolution of a coherently oscillating condensate of
right-handed sneutrinos is studied for the case where reheating after inflation
is due to perturbative inflaton decays. For the case of Dirac neutrinos, it is
shown that some suppression of Planck scale-suppressed corrections to the
right-handed neutrino superpotential is necessary. cH^2 corrections to the
sneutrino mass squared term must also be suppressed during inflation (|c| <
0.1), in which case, depending on the magnitude of |c| during inflation, a
significantly blue (if c > 0) or red (if c < 0) perturbation spectrum is
possible. R-parity must also be broken in order to ensure that the Universe is
not overclosed by LSPs from the late decay (at temperatures 1-10 MeV) of the
right-handed sneutrino condensate. The resulting expansion rate during
inflation can be significantly smaller than in conventional supersymmetric
inflation models (as low as 10^6 GeV is possible). For the case of Majorana
neutrinos, a more severe suppression of Planck-suppressed superpotential
corrections is required. In addition, the Majorana sneutrino condensate is
likely to be thermalised before it can dominate the energy density, which would
exclude the Majorana right-handed sneutrino as a curvaton.


title:
Bo Andersson's contribution to experimental multiparticle production
  physics: an incomplete and biased selection

abstract:
  Among the many topics related to soft QCD in which Bo Andersson gave an
important contribution to experiments, this report selects a few for which the
final word has not yet been pronounced.


title: Radiative Corrections to QCD Amplitudes in Quasi-Multi-Regge Kinematics

abstract:
  Radiative corrections to QCD amplitudes in the quasi-multi-Regge kinematics
are interesting in particular since the Reggeized form of these amplitudes is
used in the derivation of the NLO BFKL. This form is a hypothesis which must be
at least carefully checked, if not proved. We calculate the radiative
corrections in the one-loop approximation using the s-channel unitarity.
Compatibility of the Reggeized form of the amplitudes with the s-channel
unitarity requires fulfillment of the set of nonlinear equations for the
Reggeon vertices. We show that these equations are satisfied.


title:
A Position-Dependent Bose-Einstein Correlation Model for Hadronization
  Processes

abstract:
  Particles are either bosons or fermions, which obey Bose-Einstein (BE) or
Fermi-Dirac statistics, respectively. In the hadronization process the effects
of the former kind are the most important ones, since mesons are the most
common products in high-energy collisions. In the phenomenological Lund Model
the BE effect is approximated by a semiclassical momentum dependent correlation
function, which effectively acts as an attractive force between two mesons.
However, the Lund Model does also provide a space-time picture of the
hadronization process. Based on this, we have developed a simple extension of
the current LUBOEI algorithm that makes use of the production vertex distance
between two mesons.
  Comparisons between the old model and the new one is made for pions according
to exponential and Gaussian parameterizations of the BE correlation function.
Qualitatively we note a relative suppression of the BE effects in multi-jet
events, and especially for pairs of low momenta, with the new algorithm. This
trend is in agreement with preliminary experimental data.


title: Black Hole Production at a TeV

abstract:
  In this talk I briefly discuss some features of a striking signature of TeV
quantum gravity/strings and large extra dimensions: the production of exotic
objects such as black holes, and their stringy precursors, the string
resonances at large masses which can be dubbed `string balls'. The focus is on
aspects less frequently discussed in other reviews of this subject.


title: Probing Extra Dimensions with Neutrino Oscillations

abstract:
  In the braneworld scenario, gravity and neutrino oscillation can both be used
to detect the presence of an extra dimension. We argue that neutrino
oscillation is particularly suitable if the size of the extra dimension is
small, in which case the signature for the extra dimension is the disappearance
of active neutrino fluxes into the bulk, caused by the destructive interference
from the Kaluza-Klein states. We discuss a class of models to illustrate this
general feature.


title: Equivalence of Minkowski and Euclidean Field Theory Solutions

abstract:
  We consider the correspondence between solutions of non-gravitational field
theories formulated in Euclidean space-time and Minkowski space-time.
Infinitely many "Euclidean" spaces can be obtained from M4 via a group of
transformations in which the Wick rotation is a special case. We then discuss
how the solutions of gauge field theories formulated in these "Euclidean"
spaces have a one-to-one correspondence with the solutions of field theories
formulated in Minkowski space-time, provided we avoid the one-point
compactification into S4 = E4 U infinity.


title:
Shedding Light on the "Dark Side" of $B^0_d$--$\bar B^0_d$ Mixing
  through $B_d\to\pi^+\pi^-$, $K\to\pi\nu\bar\nu$ and $B_{d,s}\to\mu^+\mu^-$

abstract:
  In a wide class of NP models, which can be motivated through generic
arguments and within SUSY, we obtain large contributions to $B^0_d$--$\bar
B^0_d$ mixing, but not to $\Delta B=1$ processes. If we assume such a scenario,
the solutions $\phi_d\sim 47^\circ\lor 133^\circ$ for the $B^0_d$--$\bar B^0_d$
mixing phase implied by $A_{CP}^{mix}(B_d\to J/\psi K_S)$ cannot be converted
directly into a constraint in the $\rho$--$\eta$ plane. However, we may
complement $\phi_d$ with $|V_{ub}/V_{cb}|$ and the recently measured CP
asymmetries in $B_d\to\pi^+ \pi^-$ to determine the unitarity triangle, with
its angles $\alpha$, $\beta$ and $\gamma$. To this end, we have also to control
penguin effects, which we do by means of the $B_d\to\pi^\mp K^\pm$ branching
ratio. Interestingly, the present data show a perfectly consistent picture not
only for the ``standard'' solution of $\phi_d\sim 47^\circ$, but also for
$\phi_d\sim 133^\circ$. In the latter case, the preferred region for the apex
of the unitarity triangle is in the second quadrant, allowing us to accommodate
conveniently $\gamma>90^\circ$, which is also favoured by other non-leptonic B
decays such as $B\to\pi K$. Moreover, also the prediction for
BR$(K^+\to\pi^+\nu\bar\nu})$ can be brought to better agreement with
experiment. Further strategies to explore this scenario with the help of
$B_{d,s}\to\mu^+\mu^-$ decays are discussed as well.


title: Maximum likelihood analysis of the first KamLAND results

abstract:
  A maximum likelihood approach has been used to analize the first results from
KamLAND emphasizing the application of this method for low statistics samples.
The goodness of fit has been determined exploiting a simple Monte Carlo
approach in order to test two different null hytpotheses. It turns out that
with the present statistics the neutrino oscillation hypothesis has a
significance of about 90% (the best-fit for the oscillation parameters from
KamLAND are found to be: $\delta m_{12}^2 \sim 7.1 \times 10^{-5}$ eV$^2$ and
$\sin^2 \theta_{12} = 0.424/0.576$), while the no-oscillation hypothesis of
about 50%. Through the likelihood ratio the hypothesis of no disappearence is
rejected at about 99.9% C.L. with the present data from the positron spectrum.
A comparison with other analyses is presented.


title: Semiclassical Double-Pomeron Production of Glueballs and $\eta'$

abstract:
  A semiclassical theory of high energy scattering based on interrupted
tunneling (instantons) or QCD sphaleron production has been recently developed
to describe the growing hadronic cross section and properties of the soft
Pomeron. In this work we address double-pomeron processes in this framework for
the first time. We specifically derive the cross section for central production
of parity even and odd clusters, scalar and pseudoscalar glueballs, and $\eta'$
in parton-parton scattering at high energy. We show that the specific
dependence of the production cross section on all its kinematical variables
compares favorably with the UA8 data on inclusive cluster production, as well
as the WA102 data on exclusive central production of scalar glueball and
$\eta'$, in double-pomeron exchange $pp$ scattering. The magnitude of the cross
section and its dependece on kinematic variables is correct, explaining in
particular a large deviation from the Pomeron factorization at cluster masses
in the range $M_X<8$ GeV reported by UA8.


title: Interference fragmentation functions in electron-positron annihilation

abstract:
  We study the process of electron-positron annihilation into back-to-back
jets, where in each jet a pair of hadrons is detected. The orientation of these
two pairs with respect to each other can be used to extract the interference
fragmentation functions in a clean way, for instance from BELLE or BABAR
experiment data. This is of relevance for studies of the transversity
distribution function.
  In particular, we focus on two azimuthal asymmetries. The first one has
already been studied by Artru and Collins, but is now expressed in terms of
interference fragmentation functions. The second asymmetry is new and involves
a function that is related to longitudinal jet handedness. This asymmetry
offers a different way of studying handedness correlations.


title:
Resonance-continuum interference in the di-photon Higgs signal at the
  LHC

abstract:
  A low mass Standard Model Higgs boson should be visible at the Large Hadron
Collider through its production via gluon-gluon fusion and its decay to two
photons. We compute the interference of this resonant process, gg -> H -> gamma
gamma, with the continuum QCD background, gg -> gamma gamma induced by quark
loops. Helicity selection rules suppress the effect, which is dominantly due to
the imaginary part of the two-loop gg -> gamma gamma scattering amplitude. The
interference is destructive, but only of order 5% in the Standard Model, which
is still below the 10-20% present accuracy of the total cross section
prediction. We comment on the potential size of such effects in other Higgs
models.


title: First Evidence for Neutrinoless Double Beta Decay

abstract:
  Double beta decay is indispensable to solve the question of the neutrino mass
matrix together with $\nu$ oscillation experiments. Recent analysis of the most
sensitive experiment since nine years - the HEIDELBERG-MOSCOW experiment in
Gran-Sasso - yields a first indication for the neutrinoless decay mode. This
result is the first evidence for lepton number violation and proves the
neutrino to be a Majorana particle. We give the present status of the analysis
in this report. It excludes several of the neutrino mass scenarios allowed from
present neutrino oscillation experiments - only degenerate scenarios and those
with inverse mass hierarchy survive. This result allows neutrinos to still play
an important role as dark matter in the Universe. To improve the accuracy of
the present result, considerably enlarged experiments are required, such as
GENIUS. A GENIUS Test Facility has been funded and will come into operation by
early 2003.


title:
Pairs of charged heavy-fermions from an SU(3)$_{L}\otimesU(1)_{N}$ model
  at $e^+ e^-$ colliders

abstract:
  We investigate the production, backgrounds and signatures of pairs of charged
heavy-fermions using the SU(3)$_L\otimesU(1)_N$ electroweak model in $e^+ e^-$
colliders (NLC and CLIC). We also analyze the indirect evidence for a boson
$Z^{'}$.


title:
A digital multi-channel spectroscopy system with 100 MHz flash ADC
  module for the GENIUS-TF and GENIUS projects

abstract:
  In this paper we will present the first results of applying a digital
processing technology in low-level gamma spectroscopy with HPGE detectors. An
experimental gamma spectrometer using Flash ADC module is built and tested. The
test system is now under development and shows major advantages over the
traditional analog technologies. It will be installed for the GENIUS-TF and
GENIUS projects in Gran-Sasso in early 2003.


title: One Year of Evidence for Neutrinoless Double Beta Decay

abstract:
  The present experimental status in the search for neutrinoless double beta
decay is reviewed, with emphasis on the first indication for neutrinoless
double beta decay found in the HEIDELBERG-MOSCOW experiment, giving first
evidence for lepton number violation and a Majorana nature of the neutrinos.
Future perspectives of the field are briefly outlined.


title:
Lepton pair production in relativistic ion collisions to all orders in
  $Z\alpha$ with logarithmic accuracy

abstract:
  The problem of summation of the perturbation series for the process of lepton
pair production in relativistic ion collisions is investigated. We show that
the amplitude of this process can be obtained in the compact analytical form,
if one confines to the terms growing as a powers of logarithm energy in the
cross section, the approximation of which is completely justified for such
colliders as RHIC and LHC. Using this result we calculate the Coulomb
corrections to the cross section of the process under consideration.


title: Bouncing Neutrons and the Neutron Centrifuge

abstract:
  The recent observation of the quantum state of the neutron bouncing freely
under gravity allows some novel experiments. A method of purifying the ground
state is given, and possible applications to the measurement of the electric
dipole moment of the neutron and the short distance behaviour of gravity are
discussed.


title:
VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0
  pi^0 gamma decay

abstract:
  In an attempt to explain the latest experimental result about the branching
ratio of $\omega\to \pi^0\pi^0\gamma$ decay we reexamine the decay mechanism of
this decay in a phenomenological framework in which the contributions of VMD,
chiral loops, $\sigma$-meson intermediate state amplitudes and the effects of
$\omega-\rho$ mixing are considered. We conclude that in order to obtain the
experimental value of the branching ratio $B(\omega\to \pi^0\pi^0\gamma)$
$\sigma$-meson amplitude which makes a substantial contribution should be
included into the reaction mechanism and the effects of $\omega-\rho$ mixing
should be taken into account. We also estimate the coupling constant
$g_{\omega\sigma\gamma}$ as $g_{\omega\sigma\gamma}=0.11$ which is much smaller
than the values suggested by light cone QCD sum rules calculations.


title:
Gold-plated Mode of CP-Violation in Decays of B_c Meson from QCD Sum
  Rules

abstract:
  The model-independent method based on the triangle ideology is implemented to
extract the CKM-matrix angle gamma in the decays of doubly heavy long-lived
meson B_c. We analyze a color structure of diagrams and conditions to
reconstruct two reference-triangles by tagging the flavor and CP eigenstates of
D^0 meson in the fixed exclusive channels. The characteristic branching ratios
are evaluated in the framework of QCD sum rules.


title: Instanton effects in high energy processes

abstract:
  Manifestation of the nonperturbative effects in hadron processes at high
energy is discussed within the instanton liquid model. Their role in high
energy diffractive quark-quark scattering, quark form factor and hard exclusive
processes with pion participation is illuminated.


title:
Exploring the sensitivity of current and future experiments to
  $\theta_{\odot}$

abstract:
  However the allowed range of $\theta_{\odot}$ ($\theta_{12}$) did not change
much with the inclusion of the KamLAND results. In this paper we probe if
future data from KamLAND can increase the accuracy of the allowed range in
$\theta_{\odot}$ and conclude that even after 3 kton-year of statistics and
most optimistic error estimates, KamLAND {\it may} find it hard to
significantly improve the bounds on the mixing angle obtained from the solar
neutrino data. We discuss the $\theta_{12}$ sensitivity of the survival
probabilities in matter (vacuum) as is relevant for the solar (KamLAND)
experiments. We find that the presence of matter effects in the survival
probabilities for $^8B$ neutrinos give the solar neutrino experiments SK and
SNO an edge over KamLAND, as far as $\theta_{12}$ sensitivity is concerned,
particularly near maximal mixing. Among solar neutrino experiments we identify
SNO as the most promising candidate for constraining $\theta_{12}$ and make a
projected sensitivity test for the mixing angle by reducing the error in the
neutral current measurement at SNO. Finally we argue that the most accurate
bounds on $\theta_{12}$ can be achieved in a reactor experiment, if the
corresponding baseline and energy can be tuned to a minimum in the survival
probability. We propose a new reactor experiment which can give the value of
$\tan^2\theta_{12}$ to within 14%. We also discuss the future Borexino and
LowNu experiments.


title:
Complete 1-Loop Calculation of the T-violating D-Parameter in Neutron
  Decay in the MSSM

abstract:
  We investigate the violation of time reversal invariance in the decay of the
free neutron in the framework of the Minimal Supersymmetric Standard Model
(MSSM). The coefficient of the triple product of the neutron spin and the
momenta of electron and neutrino, the so called D parameter, is computed at one
loop order including all diagrams. We find that D is mainly sensitive to the
trilinear A coupling in the squark sector and to the phase of the coefficient
\mu which mixes the two Higgs superfields. The maximal MSSM contribution using
parameters still allowed by experiment is however at D \approx 10^{-7}, while
QED final state interactions give a value of D_{fsi} = - 2.3 * 10^{-5}.
Explicit expressions for all relevant diagrams are given in an Appendix.


title: Group projection method in statistical systems

abstract:
  We discuss an application of group theoretical methods to the formulation of
the thermodynamics of systems constrained by the conservation laws described by
a semi--simple compact Lie group. A general projection method that allows to
construct a partition function for a given irreducible representation of the
Lie group is outlined. Applications of the method in Lattice Gauge Theory (LGT)
for non--zero baryon number and in the phenomenological description of particle
production in ultrarelativistic heavy ion collisions are also indicated.


title: Signatures of Supernova Neutrino Oscillations into Extra Dimensions

abstract:
  We consider the mixing of muon and tau neutrinos with sterile fermion fields
propagating in extra dimensions in the context of core collapse supernova
physics, extending the analysis of the electron neutrino case done in a
previous work. We show that the potentially dramatic modifications to the
supernova evolution are prevented by a mechanism of feedback, so that no severe
bounds on the parameters of the extra dimensions need to be imposed.
Nevertheless, the supernova core evolution is significantly modified. We
discuss the consequences on the delayed explosion mechanism and the
compatibility with the SN1987A signal. Then, for the cases of both nu_{mu,tau}
and nu_e mixing with bulk fermions, we analyse the distinctive features of the
signal on Earth.


title: Black Hole Relics in Large Extra Dimensions

abstract:
  Recent calculations applying statistical mechanics indicate that in a setting
with compactified large extra dimensions a black hole might evolve into a
(quasi-)stable state with mass close to the new fundamental scale $M_f$. Black
holes and therefore their relics might be produced at the LHC in the case of
extra-dimensional topologies. In this energy regime, Hawking's evaporation
scenario is modified due to energy conservation and quantum effects. We
reanalyse the evaporation of small black holes including the quantisation of
the emitted radiation due to the finite surface of the black hole. It is found
that observable stable black hole relics with masses $\sim 1-3 M_f$ would form
which could be identified by a delayed single jet with a corresponding hard
momentum kick to the relic and by ionisation, e.g. in a TPC.


title: Status of Evidence for Neutrinoless Double Beta Decay

abstract:
  The present experimental status in the search for neutrinoless double beta
decay is reviewed, with emphasis on the first indication for neutrinoless
double beta decay found in the Heidelberg-Moscow experiment, giving first
evidence for lepton number violation and a Majorana nature of the neutrinos.
Future perspectives of the field are briefly outlined.


title: Probing mSUGRA Models at Linear Colliders

abstract:
  A feasibility study of a 500-GeV linear collider is presented for mSUGRA
models in co-annihilation region. We find an active mask is critical to
suppress $e^+ e^- \to e^+ e^- \tau^+ \tau^-$ events to probe the models.


title: Measurement of the $HZ\gamma$ Coupling at the Future Linear \ee Collider

abstract:
  We examine the prospects for measuring the $H Z \gamma$ coupling of a
Standard Model-like Higgs boson with a mass between 120 and 160 GeV at the
future TESLA linear \ee collider, assuming an integrated luminosity of 1
ab$^{-1}$ and a center-of-mass energy of 500 GeV. We consider the Higgs boson
produced in association with $\nu_e \bar{\nu_e}$ via the $W W$ fusion reaction
$e^+e^- \to \nu_e \bar{\nu_e} H$, followed by the rare decay into a $Z$ boson
and a photon, $H \to Z \gamma$. Accounting for all main background
contributions, different selection procedures are discussed. Uncertainties on
the \hZg branching fraction of approximately 48% (27%, 44%) can be achieved in
unpolarised \ee collisions for $M_H$ = 120 (140, 160) GeV. With appropriate
initial state polarisations $\Delta$BF(\hZg)/BF(\hZg), or the precisions on the
\hZg partial width, can be improved to 29% (17%, 27%) and provide valuable
information on the $HZ\gamma$ coupling. We regard our results as a convincing
confirmation of the great potential of a linear collider to access and reliably
measure important parameters of the Higgs boson despite initially overwhelming
background with final state signature similar to the signal events.


title: Ultra-high energy neutrino-nucleon interactions

abstract:
  Ultra-high energy ($E_\nu>10^8 $ GeV) neutrino-nucleon total cross sections
$\sigma^{\nu N}$ are estimated from a soft non-perturbative model complemented
by an approximate QCD evolution, explicitly calculated. The resulting
asymptotic energy behavior of the neutrino-nucleon charged-current total cross
section is derived analytically and predictions concerning the observation of
ultra-high energy neutrinos in future experiments are presented.


title:
Electromagnetic splitting for mesons and baryons using dressed
  constituent quarks

abstract:
  Electromagnetic splittings for mesons and baryons are calculated in a
formalism where the constituent quarks are considered as dressed
quasiparticles. The electromagnetic interaction, which contains coulomb,
contact, and hyperfine terms, is folded with the quark electrical density. Two
different types of strong potentials are considered. Numerical treatment is
done very carefully and several approximations are discussed in detail. Our
model contains only one free parameter and the agreement with experimental data
is reasonable although it seems very difficult to obtain a perfect description
in any case.


title: Thermal hybrid inflation in brane world

abstract:
  In conventional scenario of thermal inflation, the requirement that the
reheating temperature must be larger than the temperature of the
nucleosynthesis puts a lower bound on the mass of the inflaton field. At the
same time, the mass of the inflaton field and the height of the potential
during thermal inflation are intimately related. With these conditions, the
conventional models for thermal inflation are quite restricted. Naively, one
can expect that the above constraints may be removed if thermal inflation is
realized within the setups for hybrid inflation. In this paper we show why it
is difficult to construct hybrid models for thermal inflation within
conventional supergravity, and then show a successful example in models for the
braneworld. Our mechanism is based on the idea of non-tachyonic brane
inflation.


title: Can The Majorana neutrino CP-violating phases be restricted ?

abstract:
  We reanalyze the constraints in neutrino masses and MNS lepton mixing
parameters using the new data from the terrestrial (KamLAND) and astrophysical
(WMAP) observations together with the HEIDELBERG-MOSCOW double beta decay
experiment. It leads us to the almost degenerate or inverse hierarchy neutrino
mass scenario. We discuss the possibility of getting the bound for the Majorana
CP violating phase.


title:
Quasiparticle Description of the QCD Plasma, Comparison with Lattice
  Results at Finite T and Mu

abstract:
  We compare our 2+1 flavor, staggered QCD lattice results with a quasiparticle
picture. We determine the pressure, the energy density, the baryon density, the
speed of sound and the thermal masses as a function of T and $\mu_B$. For the
available thermodynamic quantities the difference is a few percent between the
results of the two approaches. We also give the phase diagram on the $\mu_B$--T
plane and estimate the critical chemical potential at vanishing temperature.


title: Mass bounds in a model with a Triplet Higgs

abstract:
  We perform an analysis of the Renormalization Group evolution of the
couplings in an extension to the Standard Model which contains a real triplet
in the Higgs sector. Insisting that the model remain valid up to 1 TeV allow us
to map out the region of allowed mass for the Higgs bosons. We conclude that it
is possible for there to be no light Higgs bosons without any otherwise
dramatic deviation from the physics of the Standard Model.


title: Geometry of Reggeized amplitudes from AdS/CFT

abstract:
  String theory has long ago been initiated by the quest for a theoretical
explanation of the observed high-energy ``Reggeization'' of strong interaction
amplitudes. In terms of quantum field theory, it is the so-called ``soft''
regime, where the coupling constant is expected to be large and thus
perturbative calculations inadequate. However, since then, no convincing
derivation of the link between gauge field theory at strong coupling and string
theory has come out. This 35-years-old puzzle is thus still unsolved. We
discuss how modern tools like the AdS/CFT correspondence give a new insight on
the problem by applying it to two-body elastic and inelastic scattering
amplitudes. We obtain a geometrical interpretation of Reggeization and its
relation with confinement in gauge theory.


title:
A Model-Independent Treatment of FSR in Low Energy sigma_had
  Measurements

abstract:
  This paper has been withdrawn by the authors. The parameterization of the FSR
tensor has been not the most general.


title:
Elektroweak one-loop corrections for e^+e^- annihilation into t\bar{t}
  including hard bremsstrahlung

abstract:
  We present the complete electroweak one-loop corrections to top-pair
production at a linear e^+e^- collider in the continuum region. Besides weak
and photonic virtual corrections, real hard bremsstrahlung with simple
realistic kinematical cuts is included. For the bremsstrahlung we advocate a
semi-analytical approach with a high numerical accuracy. The virtual
corrections are parametrized through six independent form factors, suitable for
Monte-Carlo implementation. Alternatively, our numerical package topfit, a
stand-alone code, can be utilized for the calculation of both differential and
integrated cross sections as well as forward--backward asymmetries.


title: P and CP violation in B physics

abstract:
  While the Kobayashi--Maskawa single phase origin of CP violation passed its
first crucial precision test in $B\to J/\psi K_S$, the chirality of weak
$b$-quark couplings has not yet been carefully tested. We discuss recent
proposals for studying the chiral and CP-violating structure of these couplings
in radiative and in hadronic B decays.


title:
The enhancement of the decay Upsilon(1D) -> eta Upsilon(1S) by the axial
  anomaly in QCD

abstract:
  It is shown that the rates of the decays Upsilon(1^3D_1) -> eta Upsilon(1S)
and Upsilon(1^3D_2) -> eta Upsilon(1S) should be comparable to and likely
exceed that of the recently discussed in the literature two-pion transition
Upsilon(1D) -> pi pi Upsilon(1S). The reason for this behavior is that the
discussed eta transitions are enhanced by the contribution of the anomaly in
the flavor singlet axial current in QCD.


title:
Imprecated, yet Impeccable: On the Theoretical Evaluation of Gamma(B ->
  X_c \ell \nu)

abstract:
  We present a detailed evaluation of the total semileptonic B meson width in
terms of |V_{cb}| and heavy quark parameters (quark masses and the expectation
values of local heavy quark operators). Special attention is given to
perturbative corrections which can precisely be calculated in a scheme with a
hard Wilsonian cutoff at a scale around 1GeV appropriate for the OPE, and to
the potential impact of higher-order power corrections. We point out that the
latter require control over possible contributions from four-quark operators
containing charm quark fields. Analytical expressions are given which allow
evaluating the width with various choices of parameters; ready-to-use
expressions showing the dependence on the heavy quark parameters are presented
as well. We illustrate these results by commenting on how these parameters can
be extracted and what accuracy is likely to be achievable in the near future.


title: Unitarity of the Higher Dimensional Standard Model

abstract:
  We study the unitarity of the standard model (SM) in higher dimensions. We
show that the essential features of SM unitarity remain after compactification,
and place bounds on the highest Kaluza-Klein (KK) level N_KK and the Higgs mass
m_H in the effective four-dimensional (4d) low-energy theory. We demonstrate
these general observations by explicitly analyzing the effective 4d KK theory
of a compactified 5d SM on S^1/Z_2. The nontrivial energy cancellations in the
scattering of longitudinal KK gluons or KK weak bosons, a consequence of the
geometric Higgs mechanism, are verified. In the case of the electroweak gauge
bosons, the longitudinal KK states also include a small mixture from the KK
Higgs excitations. With the analyses before and after compactification, we
derive the strongest bounds on N_KK from gauge KK scattering. Applying these
bounds to higher-dimensional SUSY GUTs implies that only a small number of KK
states can be used to accelerate gauge coupling unification. As a consequence,
we show that the GUT scale in the 5d minimal SUSY GUT cannot be lower than
about 10^{14} GeV.


title: Family Hierarchy from Symmetry Breaking

abstract:
  We investigate symmetry breaking patterns from replicated gauge groups which
generate anomaly-free and family-dependent U(1) symmetries. We discuss the
extent to which these symmetries can explain the observed hierarchies of
fermion masses and mixings.


title: Neutrino mass patterns, WMAP, and Neutrinoless double beta decay

abstract:
  Based on the observed neutrino mass-square differences and mixings, we derive
a few general patterns for the neutrino mass matrix in the flavor basis, which
can correctly describe the atmospheric and solar neutrino data. Upon the most
recent result on the absolute neutrino mass bound from WMAP, we can rule out a
large portion of the parameter space that claimed by the positive signal in the
Heidelberg-Moscow $0\nu\beta\beta$ experiment. In the case when one of the
majorana phases is $\pi$, the effective neutrino mass obtained is inconsistent
with the claim.


title: e+e- --> nu nu-bar A in the two-Higgs-doublet model

abstract:
  We compute the cross section for e+e- --> nu nu-bar A, where A is the CP-odd
scalar, in the general CP-conserving type-II two-Higgs-doublet model. We sum
the contributions from the ``t-channel'' e+e- --> nu nu-bar W W --> nu nu-bar A
graphs and ``s-channel'' e+e- --> Z A --> nu nu-bar A graphs, including their
interference. Higgs-triangle graphs and all box diagrams are included. For many
parameter choices, especially those in the decoupling region of parameter space
(light h and m_A, m_H, m_H^+ > 2 m_Z), the Higgs-triangle and box diagrams are
found to be of minor importance, the main contributing loops being the top and
bottom quark triangle diagrams. The predicted cross section is rather small for
tan beta > 2 and/or m_A > 2 m_t. However, we also show that if parameters are
chosen corresponding to large Higgs self-couplings then the Higgs-triangle
graphs can greatly enhance the cross section. We also demonstrate that the
SUSY-loop corrections to the b b-bar A coupling could be such as to greatly
enhance this coupling, resulting in an enhanced nu nu-bar A cross section.
Complete cross section expressions are given in the Appendices.


title: The CP Violation Problem

abstract:
  Withdrawn by arXiv administration because the text and equations were
plagiarized from chapters 1 and 6 of the BaBar Physics Book
http://www.slac.stanford.edu/pubs/slacreports/slac-r-504.html
  See also hep-ph/0304045


title: Two-loop self-energy correction in high-Z hydrogen-like ions

abstract:
  A complete evaluation of the two-loop self-energy diagrams to all orders in
Z\alpha is presented for the ground state of H-like ions with Z\ge 40.


title:
Pion Generalized Distribution Amplitudes in the Nonlocal Chiral Quark
  Model

abstract:
  We use a simple, instanton motivated, nonlocal chiral quark model to
calculate pion Generalized Distribution Amplitudes (GDAs). The nonlocality
appears due to the momentum dependence of the constituent quark mass, which we
take in a form of a generalized dipole formula. With this choice all
calculations can be performed directly in the Minkowski space and the
sensitivity to the shape of the cutoff function can be studied. We demonstrate
that the model fulfills soft pion theorems both for chirally even and chirally
odd GDAs. The latter one cannot be derived by the methods of current algebra.
Whenever possible we compare our results with the existing data. This can be
done for the pion electromagnetic form factor and quark distributions as
measured in the proton-pion scattering.


title: Family nonuniversal Z-prime and b to s Gamma decay

abstract:
  We have calculated the branching ratio and CP asymmetry of B-->X_s +gamma
decay within the family--nonuniversal Z' models. We have established certain
bounds on the model parameters using the present experimental bounds. We also
comment on the role of family--nonuniversality in the hadronic decay modes of
the B meson.


title: Electromagnetic nucleon form factors from QCD sum rules

abstract:
  The electromagnetic form factors of the nucleon, in the space-like region,
are determined from three-point function Finite Energy QCD Sum Rules. The QCD
calculation is performed to leading order in perturbation theory in the chiral
limit, and to leading order in the non-perturbative power corrections. The
results for the Dirac form factor, $F_1(q^2)$, are in very good agreement with
data for both the proton and the neutron, in the currently accessible
experimental region of momentum transfers. This is not the case, though, for
the Pauli form factor $F_2(q^2)$, which has a soft $q^2$-dependence
proportional to the quark condensate $<0|\bar{q}q|0>$.


title: Proton Decay in a Consistent Supersymmetric SU(5) GUT Model

abstract:
  It is widely believed that minimal supersymmetric SU(5) GUTs have been
excluded by the SuperKamiokande bound for the proton decay rate. In the minimal
model, however, the theoretical prediction assumes unification of Yukawa
couplings, Y_d=Y_e, which is known to be badly violated. We analyze the
implications of this fact for the proton decay rate. In a consistent SU(5)
model with higher dimensional operators, where SU(5) relations among Yukawa
couplings hold, the proton decay rate can be several orders of magnitude
smaller than the present experimental bound.


title: J/psi couplings to charmed resonances and to pi

abstract:
  We present an evaluation of the strong couplings JD^(*)D^(*) and
JD^(*)D^(*)pi by an effective field theory of quarks and mesons. These
couplings are necessary to calculate pi+J/psi --> D^(*)+barD^(*) cross
sections, an important background to the J/psi suppression signal in the
quark-gluon plasma. We write down the general effective lagrangian and compute
the relevant couplings in the soft pion limit and beyond.


title:
Next generation long baseline experiments on the path to leptonic CP
  violation

abstract:
  In this paper we quantify the trade-off between setups optimized to be
ancillary to Phase II Superbeams or Neutrino Factories and experiments tuned
for maximal sensitivity to the subdominant terms of the neutrino transition
probability at the atmospheric scale (``maximum discovery potential''). In
particular, the theta(13) sensitivity is computed for both Phase I superbeams
(JHF-SK and NuMI Off-Axis) and next generation long baseline experiments
(ICARUS, OPERA and MINOS). It is shown that Phase I experiments cannot reach a
sensitivity able to ground (or discourage in a definitive manner) the building
of Phase II projects and that, in case of null result and without a dedicated
$\bar{\nu}$ run, this capability is almost saturated by high energy beams like
CNGS, especially for high values of the ratio $\Delta m^2_{21}/|\Delta
m^2_{31}|$.


title: Three Loop Top Quark Contributions to the rho Parameter

abstract:
  We present results for the three-loop top quark contributions to the rho
parameter in the limit of large top quark mass. The simultaneous dependence on
the mass of the Higgs boson M_H and the mass of the top quark m_t is obtained
from expansions in the range of M_H around m_t and in the limit M_H >> m_t. In
combination with the previous result for M_H = 0 the dependence of the rho
parameter on the leading Yukawa contributions, i.e. on m_t and M_H, is well
under control for all mass values of practical importance. The effects lead to
a shift in the W mass in the order of 5 MeV and are relevant for precision
measurements at TESLA.