title: Inelastic Hadron Diffraction in High Energy Elastic Scattering of Nuclei

abstract:
  The r\^{o}le of inelastic diffraction in elastic scattering of nuclei is
studied in the formalism of \emph{diffractive limit}. The results obtained for
scattering of the $\alpha$--particles on light nuclei show that the nucleonic
diffraction is especially important at large momentum transfers where the
Glauber model of geometric diffraction fails.


title: pQCD at the Kinematical Boundary of its Applicability

abstract:
  I examines the applicability and possible need for a re-formulation of pQCD,
as we know it, in the DIS limit of small $Q^2$ and $x$. Gluon saturation,
implied by s-channel unitarity, and its possible experimental signatures are
critically assessed.


title:
Dipole-proton $S$-matrix derived from diffractive meson
  electroproduction

abstract:
  Through a determination of the $S$-matrix element for the scattering of a
localized colour dipole on a proton, we show that saturation effects can
already be sizable at HERA. The saturation scale is found to be around 1-1.5
$GeV^2$ for the highest available energies and for central collisions, and is a
decreasing function of the impact parameter.


title: Connection between Diffraction and Small-$x$

abstract: A brief review of the modern QCD theory of diffractive DIS is given.


title: Experimental Studies of Diffractive Processes at HERA

abstract:
  Diffractive processes in photon-proton interactions at HERA offer the
opportunity to improve the understanding of the transition between the soft,
non-perturbative regime in hadronic interactions at $Q^2 = 0$ and the
perturbative region at high $Q^2$. Recent experimental results from HERA on
inclusive diffractive scattering, exclusive vector meson production and the
properties of the hadronic final state in diffraction are reviewed. The results
are discussed in the context of current theoretical models.


title:
Event-by-Event Fluctuations of Transverse Momentum in Elementary
  Collisions at 250 GeV/$c$

abstract:
  We present a study of event-by-event fluctuations of transverse momentum in
$\pi^{+}\p$ and $\K^{+}\p$ collisions at 250 GeV/$c$ and the corresponding
PYTHIA Monte Carlo results for $\pi^{+}\p$ collisions. The dependence of
$\Phi_{p_{t}}$ on event and particle variables are investigated in detail. We
find that $\Phi_{p_t}$ are all negative for different average transverse
momentum per event sample. The $<p_{t} >_N \sim N$ correlation may not be the
only origin of $\Phi_{p_{t}}$.


title: Multiplicity Fluctuations and Bose-Einstein Correlations in DIS at HERA

abstract:
  Results of the recent studies of the multiplicity fluctuations and
Bose-Einstein correlations (BEC) in deep-inelastic scattering (DIS) at large
Q$^2$ are reviewed. The measurements were done with the ZEUS detetor at HERA.


title: QCD Description of Angular Correlations

abstract:
  We review the predictions on angular correlations and their recent
experimental tests at LEP and HERA. Power behaviour of correlation functions
appear for large angles and reflect the underlying fractal structure in jet
evolution. Asymptotic scaling laws work rather well for the low momentum
particles. For angular correlations the predictions work at least
qualitatively, sometimes quantitatively, at LEP and the higher HERA energies.
Some limitations of the approach and possible improvements are discussed.


title: Correlations and Fluctuations at RHIC

abstract:
  Particle correlations and fluctuations measured by RHIC experiments at
$\sqrt{s_{NN}}$=130 GeV were discussed. The source size parameters were similar
to those measured at the CERN-SPS, and no long duration time of particle
emission were observed. It was pointed out that the dependences of longitudinal
and transverse radius parameters on the pair momentum are explained with a
single $m_T$ scaling function observed at the SPS energy. Fluctuation studies
of mean $p_{T}$ of charged particles and of mean $E_{T}$ in an electromagnetic
calorimeter found no significant non-statistical fluctuations by PHENIX, but
some indication in charge independent $<p_T>$ by STAR.


title: Numerical modelling of correlations

abstract:
  We demonstrate algorithm for numerical modelling of Bose-Einstein
correlations (BEC) formulated on quantum statistical level for a single event
and exploring the property that identical particles subjected to Bose
statistics do bunch themselves in a maximal possible way in the same cells in
phase-space.


title: Correlations and Fluctuations(an Introductory Review)

abstract:
  Far too often are multiparticle final states studied and models tested on
merely single-particle spectra and their integrals, the average multiplicities:
A multiparticle final state is a non-linear, complex system and the essential
information on the dynamics is contained in the particle correlations and their
integrals measuring the fluctuations!


title: Prompt J/psi production at the LHC

abstract:
  Models with essential non-perturbative QCD dynamics for the production of
charmonium are extrapolated to give predictions of prompt J/psi production at
the LHC. Differences of up to an order of magnitude occurs, although the
different models all describe the Tevatron data on high-pT charmonium. An
important point is here the treatment of higher order perturbative QCD effects.
We also discuss the large rate of prompt J/psi from these models as a
background to CP violation studies.


title: Singly produced new physics particles in future colliders

abstract:
  Single production at hadron and photon colliders of gluinos and sneutrinos of
supersymmetric models, as well as radions of the Randall-Sundrum model, is
discussed. In the case of supersymmetry, R-parity breaking is needed in order
to produce single susy particles. Resonant production of radions is considered
at gamma-gamma collider.


title: Kaluza-Klein Excitations of W and Z at the LHC?

abstract:
  Deviations from standard electroweak physics arise in the framework of a
Randall-Sundrum model, with matter and gauge fields in the bulk and the Higgs
field localized on the TeV brane. We focus in particular on modifications
associated with the weak mixing angle. Comparison with the electroweak
precision data yields a rather stringent lower bound of about 10 TeV on the
masses of the lowest Kaluza-Klein excitation of the W and Z bosons. With some
optimistic assumptions the bound could be lowered to about 7 TeV.


title:
Associated production of sfermions and gauginos at high-energy $e^+e^-$
  colliders

abstract:
  In the context of the Minimal Supersymmetric extension of the Standard Model,
we analyze the production at future high-energy $e^+e^-$ colliders of second
and third generation scalar leptons as well as scalar quarks in association
with neutralinos and charginos, $e^+e^-\to f\tilde{f}\chi$. In the case of
third generation squarks, we also discuss the associated production with
gluinos. We show that the cross sections for some of these three-body final
state processes could be significant enough to allow for the detection of
scalar fermions with masses above the kinematical two--body threshold,
$\sqrt{s}= 2m_{\tilde{f}}$. We then discuss, taking as a reference example the
case of scalar muons, the production cross sections in various approximations
and make a comparison with the full four-body production process, $e^+e^- \to
f\bar{f} \chi \chi$, in particular around the two-sfermion threshold.


title: Probing Dense Matter with Strange Hadrons

abstract:
  Analysis of hadron production experimental data allows to understand the
properties of the dense matter fireball produced in relativistic heavy ion
collisions. We interpret the analysis results and argue that color deconfined
state has been formed at highest CERN-SPS energies and at BNL-RHIC.


title:
Measuring Double Parton Distributions in Nucleons at Proton-Nucleus
  Colliders

abstract:
  We predict a strong enhancement of multijet production in proton-nucleus
collisions at collider energies, as compared to a naive expectation of a cross
section $\propto A$. The study of the process would allow to measure, for the
first time, the double parton distribution functions in a nucleon in a model
independent way and hence to study both the longitudinal and the transverse
correlations of partons.


title: Heavy quark production in $\gamma\gamma$ collisions

abstract:
  Current theoretical framework for the calculation of heavy quark production
in $\gamma\gamma$ collisions is reviewed. The importance of including direct
photon contributions up to the order $\alpha^2\alpha_s^2$ and of the proper
choice of renormalization and factorization scales in the evaluation of
$\sigma(\gamma\gamma\to Q\bar{Q})$ is emphasized.


title: Sum rules for strange form factors and flavor singlet axial charges

abstract:
  In chiral models with SU(3) group structure, strange form factors of baryon
octet are evaluated by constructing their sum rules to yield theoretical
predictions comparable to the recent experimental data of SAMPLE Collaboration.
We also study sum rules for the flavor singlet axial currents for the EMC
experiment in a modified quark model.


title:
Exploring New Physics Through Contact Interactions in Lepton Pair
  Production at a Linear Collider

abstract:
  If a contact interaction type correction to a Standard Model process is
observed, studying its detailed properties can provide information on the
fundamental physics responsible for it. Assuming that such a correction has
been observed in lepton pair production at a 500 GeV - 1 TeV linear collider,
we consider a few possible models that could explain it, such as theories with
large and TeV-scale extra dimensions and models with lepton compositeness. We
show that using the measured cross-sections and angular distributions, these
models can be distinguished with a high degree of confidence.


title:
A detailed next-to-leading order QCD analysis of deeply virtual Compton
  scattering observables

abstract:
  We present a detailed next-to-leading order (NLO) leading twist QCD analysis
of deeply virtual Compton scattering (DVCS) observables, for several different
input scenarios, in the MS-bar scheme. We discuss the size of the NLO effects
and the behavior of the observables in skewedness $\zeta$, momentum transfer,
$t$, and photon virtuality, $q^2=-Q^2$. We present results on the amplitude
level for unpolarized and longitudinally polarized lepton probes, and
unpolarized and longitudinally polarized proton targets. We make predictions
for various asymmetries and for the DVCS cross section and compare with the
available data.


title: Unitarity Corrections to the Drell-Yan Process in the Target Rest Frame

abstract:
  The unitarity corrections effects encoded in the Glauber-Mueller approach are
taken into account to calculate the differential cross sections in the
Drell-Yan process in the rest frame. A detailed study of the Drell-Yan process
in terms of the $\gamma^{*}q$ transverse separation and the color dipole size,
as well as the effective dipole cross section is performed and compared with
the available small $x$ data. Estimates for the Drell-Yan cross section at RHIC
energies are presented and discussed.


title: Phenomenology of a Constrained Standard Model from an Extra Dimension

abstract:
  We describe a highly predictive model for supersymmetry breaking in 5
dimensions. We develop its phenomenology and the capabilities for discovery and
measurement at various colliders.


title: Observable Medium Effects For Atmospheric Neutrinos

abstract:
  We discuss the possibility to observe matter effects in atmospheric neutrino
oscillations. The main conclusion is that an impact on the nu_mu survival
probability requires the action of the MSW resonance, which becomes visible for
baselines above ~7000 km. The associated muon charge asymmetry carries
information on theta_{13} and the sign of Dm^2_{31}.


title: Non-Commutativity and Unitarity Violation in Gauge Boson Scattering

abstract:
  We examine the unitarity properties of spontaneously broken non-commutative
gauge theories. We find that the symmetry breaking mechanism in the
non-commutative Standard Model of Chaichian et al. leads to an unavoidable
violation of tree-level unitarity in gauge boson scattering at high energies.
We then study a variety of simplified spontaneously broken non-commutative
theories and isolate the source of this unitarity violation. Given the group
theoretic restrictions endemic to non-commutative model building, we conclude
that it is difficult to build a non-commutative Standard Model under the
Weyl-Moyal approach that preserves unitarity.


title:
Algebraic-Numerical Evaluation of Feynman Diagrams: Two-Loop
  Self-Energies

abstract:
  A recently proposed scheme for numerical evaluation of Feynman diagrams is
extended to cover all two-loop two-point functions with arbitrary internal and
external masses. The adopted algorithm is a modification of the one proposed by
F. V. Tkachov and it is based on the so-called generalized Bernstein functional
relation. On-shell derivatives of self-energies are also considered and their
infrared properties analyzed to prove that the method which is aimed to a
numerical evaluation of massive diagrams can handle the infrared problem within
the scheme of dimensional regularization. Particular care is devoted to study
the general massive diagrams around their leading and non-leading Landau
singularities.


title:
Investigation of Bose-Einstein Correlations in 3 jet events with the
  DELPHI detector

abstract:
  A preliminary investigation of Bose-Einstein correlations in 3 jet events has
been made by analysing the collected data at the $Z^0$ peak from '94 and '95
and the calibration runs during the LEP2 period from '97 to 2000. Three methods
were used to extract two-particle correlation functions. No significant
difference was found between quark and gluon jets for all three methods.


abstract:
  Modelling correlations in heavy ion collisions is reviewed from model
independent characterization of the two-particle correlations to Buda-Lund
hydro model fits to correlations and spectra in Au + Au collisions at
sqrt{s}=130 AGeV at RHIC.


title: The Relativistic Bound State Problem in QCD: Transverse Lattice Methods

abstract:
  The formalism for describing hadrons using a light-cone Hamiltonian of SU(N)
gauge theory on a coarse transverse lattice is reviewed. Physical gauge degrees
of freedom are represented by disordered flux fields on the links of the
lattice. A renormalised light-cone Hamiltonian is obtained by making a
colour-dielectric expansion for the link-field interactions. Parameters in the
Hamiltonian are renormalised non-perturbatively by seeking regions in parameter
space with enhanced Lorentz symmetry. In the case of pure gauge theories to
lowest non-trivial order of the colour-dielectric expansion, this is sufficient
to determine accurately all parameters in the large-N limit. We summarize
results from applications to glueballs. After quarks are added, the Hamiltonian
and Hilbert space are expanded in both dynamical fermion and link fields.
Lorentz and chiral symmetry are not sufficient to accurately determine all
parameters to lowest non-trivial order of these expansions. However, Lorentz
symmetry and one phenomenological input, a chiral symmetry breaking scale, are
enough to fix all parameters unambiguously. Applications to light-light and
heavy-light mesons are described.


title: B Phenomenology

abstract:
  Many topics are discussed in b physics including lifetimes, decay mechanisms,
determinations of the CKM matrix elements |V_{cb}| and |V_{ub}|, facilities for
b quark studies, neutral $B$ meson mixing, rare b decays, hadronic decays and
CP violation. I review techniques for finding physics beyond the Standard Model
and describe the complimentarity of b decay measurements in elucidating new
physics that could be found at higher energy machines.


title: Baryogenesis in the wake of inflation

abstract:
  Electroweak baryogenesis could be very efficient at the end of an
electroweak-scale inflation. Reheating that followed inflation could create a
highly non-equilibrium plasma, in which the baryon number violating transitions
were rapid. In addition, the time-dependent motions of the scalar degrees of
freedom could provide the requisite CP violation. If the final reheat
temperature was below 100 GeV, there was no wash-out of the baryon asymmetry
after thermalization. The observed value of the baryon asymmetry can be
attained in a number of models, some of which do not require a significant
departure from the Standard Model.


title: Sneutrino Factory

abstract:
  We argue that future e^{+} e^{-} linear colliders can produce many sneutrinos
if lepton-number violating couplings lambda_{1j1} exist and enough beam
polarization is obtained. The terms lambda_{ijk} L_{i} L_{j} E_{k}^{c} are
allowed in a discrete Z_{3}-symmetry which is used to forbid rapid proton
decay, and it is worthwhile to consider the possibility of the existence of
such terms and their resultant. We study the process e^{+}e^{-} -> sneutrino ->
e^{+} e^{-} in detail, and show that if such resonance is not found,
lepton-number violating couplings lambda_{1j1}, will be strongly constrained.
If we assume sneutrino mass m_{sneutrino}=500 GeV, beam polarization
P_{e^{-}}=0.9, P_{e^{+}}=0.6, and integrated luminosity L=100 fb^{-1},
non-observation of sneutrino resonance will lead to lambda_{1j1} < 0.02 (if all
charginos, and neutralinos, are lighter than the sneutrino), or lambda_{1j1} <
0.003 (if all charginos, and neutrainos, are heavier than the sneutrino).


title:
Semileptonic and nonleptonic B decays to three charm quarks: B->J/psi
  (eta_c) D l nu and J/psi (eta_c) D pi

abstract:
  We evaluate the form factors describing the semileptonic decays $\bar{B^0}\to
J/\psi (\eta_c) D^+ \ell^- \bar \nu_\ell$, within the framework of a QCD
relativistic potential model. This decay is complementary to $\bar{B^0}\to
J/\psi (\eta_c) D^+ \pi^-$ in a phase space region where a pion factors out.We
estimate the branching ratio for these semileptonic and nonleptonic channels,
finding $\mathcal{BR}(\bar{B^0} \to J/\psi (\eta_c) D^+ \ell \nu_\ell) \simeq
10^{-13}$, $\mathcal{BR}(\bar{B^0} \to J/\psi D^+ \pi^-) = 3.1 \times 10^{-8}$
and $\mathcal{BR}(\bar{B^0} \to \eta_c D^+ \pi^-) = 3.5 \times 10^{-8}$.


title: Constraint on solar axions from seismic solar models

abstract:
  We reexamine the theoretical limit on the axion coupling to two photons,
$g_{a\gamma \gamma}$, in the light of a new solar model (seismic solar model)
and the latest solar neutrino observations, the Super-Kamiokande and the
Sudbury Neutrino Observatory (SNO). From the comparison of the theoretically
expected and the measured neutrino fluxes, we set a limit $g_{a\gamma \gamma} <
4.0\times 10^{-10} ~\mathrm{GeV} ^{-1}$. This limit based on a new procedure is
about a factor of 3 improvement over the previous theoretical limit and a more
severe limit than the solar axion experiments. Therefore this limit is the most
stringent limit on solar axions.


title: Post-LEP CMSSM Benchmarks for Supersymmetry

abstract:
  We introduce a set of CMSSM benchmark scenarios that take into account the
constraints from LEP, Tevatron, $b \to s \gamma$, $g_\mu - 2$ and cosmology.
The benchmark points are chosen to span the range of different generic
possibilities, including focus-point models, points where coannihilation
effects on the relic density are important, and points with rapid relic
annihilation via direct-channel Higgs poles, as well as points with smaller
sparticle masses. We make initial estimates of the physics reaches of different
accelerators, including the LHC, and $e^+ e^-$ colliders in the sub- and
multi-TeV ranges. We stress the complementarity of hadron and lepton colliders,
with the latter favoured for non-strongly-interacting particles and precision
measurements.


title: Ultra High Energy Cosmic Ray and UHE Neutrino-Z Showering in Dark Halos

abstract:
  The Ultra High Energy Cosmic Ray (UHECR), by UHE neutrino-relic neutrino--Z
showering in Hot Dark Halos (HDM), shows an energy spectra, an anisotropy
following the relic neutrino masses and clustering in dark halo. The lighter
are the relic neutrinos masses, the higher their corresponding Z resonance
energy peaks. A twin light neutrino mass splitting may reflect into a twin Z
resonance and a complex UHECR spectra modulation as a twin bump at at highest
GZK energy cut-off. Each possible neutrino mass associates a characteristic
dark halo size (galactic, local, super cluster) and its anisotropy due to our
peculiar position within that dark matter distribution. The expected Z or WW,ZZ
showering into proton-anti proton and neutron-anti neutron might correspond to
peculiar clustering in observed UHECR at 10^{19}, 2 10^{19}, 4 10^{19} eV. A
neutrino light HDM halo around a Mpc will allow to the UHECR
neutron--anti-neutron secondary component at E_n> 10^{20} eV (due to Z decay)
to arise playing a role comparable with the charged p-bar{p} ones. Their
un-deflected n-bar{n} flight is shorter leading to a prompt and hard UHECR
trace pointing toward the original UHECR source direction. The direct
proton-antiproton pairs are split and spread by random magnetic fields into a
more diluted and smeared and lower energy UHECR signal around the original
source direction. Additional prompt TeVs signals by synchrotron radiation of
electro-magnetic Z showering must also occur solving the Infrared-TeV cut-off.
The observed hard doublet and triplets spectra, their time and space clustering
already favour the rising key role of UHECR n-bar n secondaries originated by
neutrino-Z tail shower.


title: Chirally symmetric quark description of low energy \pi-\pi scattering

abstract:
  Weinberg's theorem for \pi-\pi scattering, including the Adler zero at
threshold in the chiral limit, is analytically proved for microscopic quark
models that preserve chiral symmetry. Implementing Ward-Takahashi identities,
the isospin 0 and 2 scattering lengths are derived in exact agreement with
Weinberg's low energy results. Our proof applies to alternative quark
formulations including the Hamiltonian and Euclidean space Dyson-Schwinger
approaches. Finally, the threshold \pi-\pi scattering amplitudes are calculated
using the Dyson-Schwinger equations in the rainbow-ladder truncation,
confirming the formal derivation.


title: Exploring CP violation with $B_s^0 \to \bar{D^0} \phi $ decays

abstract:
  We note that it is possible to determine the weak phase \gamma from the time
dependent measurements of the decays $B_s^0(t) (\bar B_s^0 (t)) \to \bar D^0
\phi without any hadronic uncertainties. These decays are described by the
color suppressed tree diagrams and hence are free from the penguin pollutions.
We further demonstrate that \gamma can also be extracted with no hadronic
uncertainties from an angular analysis of corresponding vector vector modes,
$B_s^0(t) (\bar B_s^0 (t)) \to \bar D^{* 0} \phi $. Although the branching
ratios for these decay modes are quite small $ {\cal O} (10^{-5}-10^{-6})$, the
strategies presented here appear to be particularly interesting for the "second
generation" experiments at hadronic B factories.


title: Resonance Production at STAR

abstract:
  We present the first measurement of mid-rapidity $\phi$ vector meson
production in $Au+Au$ collisions at RHIC ($\sqrt{s_{_{NN}}} =130$ GeV) from the
STAR detector. For the 11% most central collisions, the slope parameter from an
exponential fit to the transverse mass distribution is $T=$~379$\pm$51(stat)
$\pm$ 45(syst)~MeV, the yield $dN/dy$ $=5.73\pm$0.37(stat)$\pm$ 0.57(syst) per
event and the ratio $N_{\phi}/N_{h^-}$ is found to be
0.021$\pm$0.001(stat)$\pm$ 0.03(syst). We currently place the value of the
$N_{\phi}/N_{K^-}$ ratio between 0.10 and 0.16. The measured ratios
$N_{\phi}/N_{h^-}$ and $N_{\phi}/N_{K^-}$, as well as $T$ for the $\phi$ meson
at mid-rapidity do not change for the selected centrality bins.


title: WIMP search by the DAMA experiment at Gran Sasso

abstract:
  DAMA is searching for rare processes by developing and using several kinds of
radiopure scintillators: in particular, NaI(Tl), liquid Xenon and CaF$_2$(Eu).
The main results are here summarized with particular attention to the
investigation of the WIMP annual modulation signature.


title:
Color and Kinematic Interference Influence on the Probability of Color
  Singlet Chain States

abstract:
  In popular event generators of high energy reaction, the large Nc, the number
of color approximation is implied, which reduces the possible interference
effects, and the probability of color singlet chain reaches to about 100%. In
$Nc=3$ real world, we show that not only the color interference decreases this
probability to 83%, 77%, 72%, $...$, respectively to $n=2$, 3, 4, $...$, {in
the process of}$e^+e^-{\longrightarrow}q\bar {q}+ng$ final state, but also the
accompanying kinematic interference exists, which decreases this probability to
about 67%, 58%, $...$, further. In the meanwhile, we fin d that the kinematic
interference makes the probability of color separate singlet states increases
synchronously. Combing and analyzing above facts, we infer that the probability
of color singlet chain states in high energy ${e^+e^-}{\longrightarrow}{h's}$
reaction would be much smaller than 100%, which is commonly accepted. And the
fraction of other color connec tion states, $e.g.$, color separate singlet
states should be significant.


title: Baryogenesis

abstract:
  Developments in understanding of Baryogenesis are reviewed. We start with
early motivations and the proposals in the context of GUTs. Next, the
importance of the sphaleron solution and its implications are discussed.
Studies of the Standard Model reveal that the latter has a Higgs structure
incompatible with existence of observed \B asymmetry. We then discuss a generic
scenario for electroweak baryogenesis relying on bubble wall dynamics. We also
summarise the status of the MSSM, and alternative scenarios utilising
topological defects as the source of non-equilibrium behaviour and
leptogenesis.


title:
Renormalization Group for Soft SUSY Breaking Parameters and MSSM Coupled
  with Superconformal Field Theories

abstract:
  First we give a review of the spurion formalism and the exact renormalization
group equations for soft supersymmetry breaking parameters in general gauge
theories. Next we discuss the minimal supersymmetric standard model coupled to
superconformal theories leading to hierarchical Yukawa couplings by large
anomalous dimensions of quarks and leptons. The soft scalar masses are found to
satisfy the noble sum rule in IR regime. It is possible construct the models
such that the degenerate squark/slepton masses are realized thanks to this IR
sum rule. However, it is found also that this degeneracy is slightly broken
mainly by the radiative corrections of the SM gaugino mass insertion. We show
that the degeneracy is sufficient for the squark sector, but weak for the
slepton sector to avoid the supersymmetric flavor problems.


title: What can we learn from $B\to$ $\rho (\omega) K$ decays?

abstract:
  We show that in the PQCD approach the $B\to \rho(\omega) K$ decays display
not only the dynamical penguin enhancement, the mechanism responsible for the
large branching ratios (BRs) of $B\to \phi K$ decays, but also the importance
of annihilation contributions. We find that the CP asymmetries (CPAs) of $B\to
\rho^{\pm}K^{\mp}$, $B^{\mp}\to \rho^0(\omega)K^{\mp}$ (class I) are all over
50%.


title:
Theoretical Aspects of Standard-Model Higgs-Boson Physics at a Future
  e^+ e^- Linear Collider

abstract:
  The Higgs boson is the missing link of the Standard Model of elementary
particle physics. We review its decay properties and production mechanisms at a
future e^+ e^- linear collider and its e^- e^-, e^+- gamma, and gamma gamma
modes, with special emphasis on the influence of quantum corrections. We also
discuss how its quantum numbers and couplings can be extracted from the study
of appropriate final states.


title: Neutrino and astroparticle physics : Working group report

abstract:
  The contributions made to the Working Group activities on neutrino and
astroparticle physics are summarised in this article. The topics discussed were
leptogenesis in Left-Right symmetric model, inflationary models in
Raman-Sundrum scenarios, ultra high energy cosmic rays and neutrino
oscillations in 4 flavour and decaying neutrino models.


title: $\sigma$ Meson In $J/\Psi$ Decays

abstract:
  Recently BES at BEPC found evidence for the existence of the $\sigma$ meson
in the process of $J/\Psi \to \sigma\omega \to\pi\pi\omega$. In this paper we
firstly discuss the relevant coupling $g_{\sigma\pi\pi}$ and show that the
linear $\sigma$ model gives rise to a reasonable description of the $\sigma$
decay into $\pi$'s, then we calculate the coupling constant
$g^{th}_{J/\Psi\sigma\omega}$ by using the perturbative QCD technique and the
light-cone wave functions of the $\sigma$ and $\omega$ mesons. The results show
that the theoretical value of $g^{th}_{J/\Psi\sigma\omega}$ is within the range
of experimental value $g_{J/\Psi\sigma\omega}$.


title:
Constraints on mSUGRA and SUSY particle production at future $e^+e^-$
  linear colliders

abstract:
  We perform a complete analysis of the supersymmetric particle spectrum in the
Minimal Supergravity (mSUGRA) model. We show that present constraints on the
Higgs boson and superparticle masses from collider searches and precision
measurements still allow for large regions of the mSUGRA parameter space where
some sparticles as well as the heavier Higgs particles, are light enough to be
produced at the next generation of $e^+e^-$ linear colliders. An important part
of this parameter space remains even when we require that the density of the
lightest neutralinos left over from the Big Bang falls in the range favored by
current determinations of the Dark Matter density in the Universe.


title: Strangeness and Statistical QCD

abstract:
  We discuss properties of statistical QCD relevant in Fermi phase space model
analysis of strange hadron production experimental data. We argue that the
analysis results interpreted using established statistical QCD properties are
demonstrating formation of the color deconfined state of matter in relativistic
heavy ion collisions at highest CERN-SPS energies and at BNL-RHIC, comprising
deconfined matter composed of nearly massless quarks and gluons, in statistical
equilibrium.


title: Crystalline Color Superconductivity in Dense Matter

abstract:
  In this talk I discuss a recently proposed color superconducting phase of
asymmetric quark matter where the up and down quark have different chemical
potential, being in chemical equilibrium with electrons. Using Schwinger-Dyson
equations derived from an effective theory of low-energy quasiparticles, a
critical coupling for LOFF phase is estimated for both the case of an effective
four Fermi interaction and Landau-damped one gluon exchange.


title: A Colored Zoo of Quasi-particles and Light Glueballs

abstract:
  I briefly review the effective Lagrangians for three and two flavors QCD
describing the relevant color superconductive light degrees of freedom and
their electroweak interactions.


title: Electroweak two-loop Sudakov logarithms for on-shell fermions and bosons

abstract:
  We calculate the virtual electroweak Sudakov (double) logarithms at one- and
two-loop level for arbitrary on-shell/on-resonance particles in the Standard
Model. The associated Sudakov form factors apply in a universal way to
arbitrary non-mass-suppressed electroweak processes at high energies, although
this universality has to be interpreted with care. The actual calculation is
performed in the temporal Coulomb gauge, where the relevant contributions from
collinear-soft gauge-boson exchange are contained exclusively in the
self-energies of the external on-shell/on-resonance particles. In view of the
special status of the time-like components in this gauge, a careful analysis of
the asymptotic states of the theory is required. From this analysis we derive
an all-order version of the Goldstone-boson Equivalence Theorem without the
need for finite compensation factors. By exploiting conditions obtained from
non-renormalization requirements, which are a consequence of our choice of
gauge, we show that the Sudakov corrections can be extracted through a
combination of energy derivatives and projections by means of external sources.
We observe that the Standard Model behaves dynamically like an unbroken theory
in the Sudakov limit, in spite of the fact that the explicit particle masses
are needed at the kinematical (phase-space) level while calculating the Sudakov
form factors.


title: Spacetime and vacuum as seen from Moscow

abstract:
  An extended text of the talk given at the conference ``2001: A Spacetime
Odyssey'', to be published in the Proceedings of the Inaugural Conference of
the Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor,
21-25 May 2001, M.J. Duff and J.T. Liu eds., World Scientific, Singapore, 2002;
and of Historical Lecture ``Vacuum as seen from Moscow'' at the CERN Summer
School, 10 August, 2001. Contents: Introduction; Pomeranchuk on vacuum; Landau
on parity, P, and combined parity, CP; Search and discovery of $K_L^0 \to \pi^+
\pi^-$; "Mirror world"; Zeldovich and cosmological term; QCD vacuum
condensates; Sakharov and baryonic asymmetry of the universe, BAU; Kirzhnits
and phase transitions; Vacuum domain walls; Monopoles, strings, instantons, and
sphalerons; False vacuum; Inflation; Brane and Bulk; Acknowledgments;
References.


title: Physics of vacuum at ITEP and around

abstract:
  Recollections about a few episodes from the history of physics of vacuum,
connected with the names of Pomeranchuk, Landau, Zeldovich, Sakharov and
Kirzhnits. The text of the talk will be published in the Proceedings of the
International Conference ``From the Smallest to the Largest Distances'',
Tribute to Jean Tran-Thanh-Van, May 24-26, 2001 (``Surveys in High Energy
Physics'', Taylor and Francis, 2002, v.16, No.3).


title: Large dark matter cross sections from supergravity and superstrings

abstract:
  We study the direct detection of supersymmetric dark matter in the light of
recent experimental results. In particular, we show that regions in the
parameter space of several scenarios with a neutralino-nucleon cross section of
the order of $10^{-6}$ pb, i.e., where current dark matter detectors are
sensitive, can be obtained. These are supergravity scenarios with intermediate
unification scale, and superstring scenarios with D-branes.


title: Small Dirac Neutrino Masses and R-parity from Anomalous U(1) Symmetry

abstract:
  We suggest that many of the free parameters in the supersymmetric extensions
of the Standard Model can be all linked together to the existence of a non
universal U(1) gauge symmetry, which has been spontaneously broken at very high
scale. Such a symmetry can easily generate, via non-renormalizable operators,
appropriate tree level fermion mass textures as well as the $\mu$-term of the
Higgs potential. We give a general parametrization of those terms. As an
output, R parity breaking terms only appear at a non-renormalizable level and
linked to the Yukawa couplings, giving rise to the possibility of having an
effective (exact) R parity conservation. As an interesting application of this
idea we explore the case where neutrinos are Dirac particles. The scenario can
be embedded in an extended SU(5) unification theory where the extra right
handed neutrinos are introduced as singlets. Such theory has an exact R parity
conservation and sneutrino as LSP.


title: The Top Quark at Linear Colliders: QCD Corrections

abstract:
  We present a computation of QCD next-to-leading order corrections to the top
production and decay process at linear colliders. The top quarks are allowed to
be off-shell and the production and decay subprocesses are treated together,
thus allowing for interference effects. Real gluon radiation effects as well as
virtual corrections are evaluated. The framework employed for this computation
is the double pole approximation (DPA).The results discussed include studies of
the gluon radiation properties, interference between production- and decay-
stage radiation, and top mass reconstruction.


title:
Instanton-induced Semi-hard Parton Interactions and Phenomenology of
  High Energy Hadron Collisions

abstract:
  We phenomenologically study whether partonic collisions responsible for the
growth of hadron-hadron cross sections at high energy can be ascribed to
instanton-induced processes. Although non-perturbative in nature, these
interactions occur at the semi-hard scale $Q\sim 1-2$ GeV, and should therefore
be described using information from deep inelastic leptonic scattering on the
partonic constituents in nucleons, pions, and photons. After considering
shadowing corrections in nucleon-nucleon scattering, we fix a free instanton
tail suppression parameter and determine the effective quark-quark cross
section. The resulting contributions to $NN$, $\pi N$, $\gamma N$, and
$\gamma\gamma$ cross sections all $increase$ with energy differently, but in
reasonable agreement with experimental data. We then proceed to an estimate of
the number of such processes present in high energy Au-Au collisions at RHIC,
finding that the amount of entropy produced by instanton/sphaleron events
matches the observed amount.


title: Tests of the Polyakov Loops Model

abstract:
  I give a brief review of the Polyakov Loops Model and tests thereof. I
concentrate especially on how in a pure SU(N) gauge theory, Polyakov loops with
Z(N) charges two and three affect the effective potential for charge-one loops.


title: Spin Alignment of Heavy Meson Revisited

abstract:
  Using heavy quark effective theory a factorized form for inclusive production
rate of a heavy meson can be obtained, in which the nonperturbative effect
related to the heavy meson can be characterized by matrix elements defined in
the heavy quark effective theory. Using this factorization, predictions for the
full spin density matrix of a spin-1 and spin-2 meson can be obtained and they
are characterized only by one coefficient representing the nonperturbative
effect. Predictions for spin-1 heavy meson are compared with experiment
performed at $e^+e^-$ colliders in the energy range from $\sqrt{s}=10.5$GeV to
$\sqrt{s}=91$GeV, a complete agreement is found for $D^*$- and $B^*$-meson.
There are distinct differences from the existing approach and they are
discussed.


title: Observing CP Violating MSSM Higgs Bosons at Hadron Colliders ?

abstract:
  We report on the possibility of observing Higgs sector CP violation of the
minimal supersymmetric standard model at a hadron machine. The CP phase
dependent cross-sections for the $VH_i$ associated production processes are
given for the Fermilab Tevatron and CERN LHC. Substantial production
cross-sections for channels of all three Higgs bosons simultaneously are shown
to be possible, giving a drect indication of the CP violation. The
observability of the Higgs signals are discussed.


title:
Chiral extrapolation of lattice data for the hyperfine splittings of
  heavy mesons

abstract:
  Hyperfine splittings between the heavy vector (D*, B*) and pseudoscalar (D,
B) mesons have been calculated numerically in lattice QCD, where the pion mass
(which is related to the light quark mass) is much larger than its physical
value. Naive linear chiral extrapolations of the lattice data to the physical
mass of the pion lead to hyperfine splittings which are smaller than
experimental data. In order to extrapolate these lattice data to the physical
mass of the pion more reasonably, we apply the effective chiral perturbation
theory for heavy mesons, which is invariant under chiral symmetry when the
light quark masses go to zero and heavy quark symmetry when the heavy quark
masses go to infinity. This leads to a phenomenological functional form with
three parameters to extrapolate the lattice data. It is found that the
extrapolated hyperfine splittings are even smaller than those obtained using
linear extrapolation. We conclude that the source of the discrepancy between
lattice data for hyperfine splittings and experiment must lie in non-chiral
physics.


title: QCD radiative corrections to $\gamma^*\gamma^* \to$ hadrons at LEP2

abstract:
  In this talk we describe the order-$\as$ corrections to the total cross
section and to jet rates in $\gamma^* \gamma^* \to$ hadrons for the process
$\epem\to\epem +$ hadrons. We use a next-to-leading order general-purpose
partonic Monte Carlo event generator that allows the computation of a rate
differential in the produced leptons and hadrons. We compare our results with
the experimental data for $\epem\to\epem +$ hadrons at LEP2.


title: Testing an approximation to large-Nc QCD with a toy model

abstract:
  We consider a simple model of large-Nc QCD defined by a spectrum consisting
of an infinite set of equally spaced zero-width vector resonances. This model
is an excellent theoretical laboratory for investigating certain approximation
schemes which have been used recently in calculations of hadronic parameters,
such as the Minimal Hadronic Approximation. We also comment on some of the
questions concerning issues of local duality versus global duality and
finite-energy sum rules.


title:
Same-Sign Dilepton Production via Heavy Majorana Neutrinos in
  Proton-Proton Collisions

abstract:
  We discuss same-sign dilepton production mediated by Majorana neutrinos in
high-energy proton-proton collisions $pp\ra \ell^+ \ell^{\prime +}X$ for
$\ell,~ \ell^\prime = e,~ \mu,~ \tau$ at the LHC energy $\sqrt{s}=14$ TeV.
Assuming one heavy Majorana neutrino of mass $m_N$, we present discovery limits
in the $(m_{N},|U_{\ell N}U_{\ell^\prime N}|)$ plane where $U_{\ell N}$ are the
mixing parameters. Taking into account the present limits from low energy
experiments, we show that at LHC one has sensitivity to heavy Majorana
neutrinos up to a mass $m_{N}\leq 2$ -- 5 TeV in the dilepton channels
$\mu\mu,~ \tau\tau$, and $\mu\tau$, but the dilepton states $e\ell$ will not be
detectable due to the already existing constraints from neutrinoless double
beta decay.


title:
Electromagnetic form factors in the light-front formalism and the
  Feynman triangle diagram: spin-0 and spin-1 two-fermion systems

abstract:
  The connection between the Feynman triangle diagram and the light-front
formalism for spin-0 and spin-1 two-fermion systems is analyzed. It is shown
that in the limit q+ = 0 the form factors for both spin-0 and spin-1 systems
can be uniquely determined using only the good amplitudes, which are not
affected by spurious effects related to the loss of rotational covariance
present in the light-front formalism. At the same time, the unique feature of
the suppression of the pair creation process is maintained. Therefore, a
physically meaningful one-body approximation, in which all the constituents are
on their mass-shells, can be consistently formulated in the limit q+ = 0.
Moreover, it is shown that the effects of the contact term arising from the
instantaneous propagation of the active constituent can be canceled out from
the triangle diagram by means of an appropriate choice of the off-shell
behavior of the bound state vertexes; this implies that in case of good
amplitudes the Feynman triangle diagram and the one-body light-front result
match exactly. The application of our covariant light-front approach to the
evaluation of the rho-meson elastic form factors is presented.


title: Summary of the CMS Discovery Potential for the MSSM SUSY Higgses

abstract:
  This work summarises the present understanding of the expected MSSM SUSY
Higgs reach for CMS. Many of the studies presented here result from detailed
detector simulations incorporating final CMS detector design and response. With
30 fb-1 the h -> gamma,gamma and h -> bb channels allow to cover most of the
MSSM parameter space. For the massive A,H,H+ MSSM Higgs states the channels A,H
-> tau,tau and H+ -> tau,nu turn out to be the most profitable ones in terms of
mass reach and parameter space coverage. Consequently CMS has made a big effort
to trigger efficiently on taus. Provided neutralinos and sleptons are not too
heavy, there is an interesting complementarity in the reaches for A,H ->
tau,tau and A,H -> chi,chi.


title: Observability of MSSM Higgs bosons via sparticle decay modes in CMS

abstract:
  We discuss the possibilities to observe the decays of heavy SUSY Higgs bosons
into supersymmetric particles at the LHC. Such an observation would be of
interest either in a discovery search if sparticle modes are the dominant ones,
or in a study of additional decay modes, bringing information on the SUSY
scenario potentially at work. We will focus on the most promising channel where
the heavy neutral Higgses decay into a pair of next-to-lightest neutralinos,
followed by their decay into two leptons and the LSP, thus leading to four
isolated leptons + missing E_T as the main final state signature. A study with
the CMS detector shows that the background (SM + SUSY) can be sufficiently
suppressed and that in the mass region between m_A = 230 and 450 GeV, for low
and intermediate values of tan beta, the signal would be visible provided
neutralinos and sleptons are light enough.


title: Towards the resolution of the e+e- --> Nbar N puzzle

abstract:
  We discuss the puzzling experimental results on baryon-antibaryon production
in e+e- annihilation close to the threshold, in particular the fact that
sigma(e+e- --> nbar n) is somewhat greater than sigma(e+e- --> pbar p). We
discuss an interpretation in terms of a two-step process, via an intermediate
coherent isovector state serving as an intermediary between e+e- and the
baryon-antibaryon system. We provide evidence that the isovector channel
dominates both e+e- --> pions and from Nbar N annihilation at rest, and show
that the observed ratio of sigma(e+e- --> nbar n)/sigma(e+e- --> pbar p) can be
understood quantitatively in this picture.


title:
The Effective $\eta^\prime g^* g^*$ Vertex at Arbitrary Gluon
  Virtualities

abstract:
  The effective $\eta^\prime g^* g^*$ vertex is studied in the standard
(Brodsky-Lepage) and modified hard scattering approaches for arbitrary gluon
virtualities in the time-like and space-like regions. The contribution of the
gluons in the $\eta^\prime$-meson is taken into account, and the wave-function
is constrained using data on the electromagnetic transition form factor of the
$\eta^\prime$ meson. Our results have implications for the inclusive decay $B
\to \eta^\prime X$ and exclusive decays, such as $B \to \eta^\prime (K, K^*)$,
and in hadronic production processes $N + N (\bar N) \to \eta^\prime X$.


title: New Bose-Einstein Results from L3

abstract:
  In hadronic Z decays, we compare Bose-Einstein correlations in \Pgpz pairs
with those in identical charged pion pairs. We also measure Bose-Einstein
correlations in triplets of identical charged pions. From the first study, the
source radius is found to be smaller for \Pgpz-\Pgpz than for \Pgppm-\Pgppm, as
would be expected, e.g., in a string model. However, the second study shows
that the data are consistent with the pion production being completely
incoherent. Both studies use data collected by the L3 collaboration at LEP.


title: (Some of) recent $\gamma\gamma$ measurements from LEP

abstract:
  Inclusive measurement of $J/\Psi$ (DELPHI), search for $\eta_b$ (ALEPH) and
measurement of the cross-section of the double-tagged $\gamma\gamma$ events
(ALEPH) are briefly overviewed.


title:
Maximum Non-Perturbative Strong Interaction Hypothesis and the
  Structures of Pomeron and Glueball

abstract:
  In this paper we first emphasize the importance of the Pomeron (IP) for its
asymptotically saturation the unitarity condition alone. After proper modified
the field theory model for IP developed by Landshoff and Nochtmann, we argue
that the exchange of IP in high energy $h-h'$ scattering embodies the
hypothesis of the maximum non-perturbative strong interaction reaction (MNSIR)
in which a constituent quark converts into a current quark and emits a color
octet non-perturbative gluer. We think the IP is composed from the conjugated
pair of such gluer. In the circle of non-perturbative fundamental entities in
QCD, we argue that there should exist a new member -- the constituent gluon, it
should be emerged in high energy $h-h'$ strong-soft processes, and the
glueballs are produced via two constituent gluons fusion. Finally, we
conjecture there may be an averaged dual relation between the glueballs and the
Pomeron, but this correspondence may become as multi-to-one homologue.


title:
Absence of Thermophoretic Flow in Relativistic Heavy-Ion Collisions as
  an Indicator for the Absence of a Mixed Phase

abstract:
  If a quark-gluon plasma is formed in relativistic heavy-ion collisions, there
may or may not be a mixed phase of quarks, gluons and hadronic clusters when
the critical temperature is reached in the expansion of the fireball. If there
is a temperature gradient in the fireball, the hadronic clusters, embedded in
the heat bath of quarks and gluons, are subjected to a thermophoretic force. It
is shown that even for small temperature gradients and short lifetimes of the
mixed phase, thermophoresis would lead to a flow essentially stronger than the
observed one. The absence of this strong flow provides support for a rapid or
sudden hadronization mechanism without a mixed phase.


title: Topological transitions at the resonance in gauge sector

abstract:
  We discuss topological transitions during parametric resonance in the gauge
sector of electroweak theory. It is shown that the resonance leads to
separation of topological indices of the gauge and Higgs fields, resulting in
topological transitions of non-sphaleron nature.


title: Report of the Snowmass Subgroup on Extra Dimensions

abstract:
  In this report we summarize the work performed at Snowmass 2001 on the
physics of extra dimensions. We divide these analyses into the following
classes: searches for extra dimensional phenomena, identification of specific
new physics scenarios, studies of black hole production and non-commutative
QED.


title: Vertex integrals in heavy-particle theories

abstract:
  We give the results of complete analytical computations of two- and
three-point loop integrals ocurring in heavy particle theories, with and
without velocity change, for arbitrary values of external momenta and masses.


title:
One-loop corrections of order (Z alpha)^6m_1/m_2, (Z alpha)^7 to the
  muonium fine structure

abstract:
  The corrections of order (Z alpha)^6m_1/m_2 and (Z alpha)^7 from one-loop
two-photon exchange diagrams to the energy spectra of the hydrogenic atoms are
calculated with the help of the Taylor expansion of corresponding integrands.
The method of averaging the quasipotential over the wave functions in the
d-dimensional coordinate space is formulated. The numerical values of the
obtained contributions to the fine structure of muonium, hydrogen and
positronium are presented.


title:
Initial conditions for simulated `tachyonic preheating' and the Hartree
  ensemble approximation

abstract:
  In numerical simulations studying preheating in the classical approximation
there is the problem how to derive the classical initial conditions from the
quantum vacuum fluctuations. In past treatments, the initial conditions often
put an energy density into the classical field of order of the cutoff, leading
to a divergent temperature after thermalization. We suggest a solution to the
problem which follows naturally from a Hartree ensemble approximation,
introduced recently as an improvement over the standard Hartree approximation.
We study the effects on particle numbers of the various treatments, within the
context of `tachyonic preheating' in 1+1 dimensional $\phi^4$ theory.


title: Production & Decay of Quarkonium

abstract:
  In this talk I review NRQCD predictions for the production of charmonium at
the Tevatron. After a quick presentation of the NRQCD factorization formalism
for production and decay I review some old results and discuss how they compare
to recent data. Following this I discuss some recent work done with Adam
Leibovich and Ira Rothstein.


title: Time-Varying alpha and Particle Physics

abstract:
  We argue that models in which an observable variation of the fine structure
constant is explained by motion of a cosmic scalar field, are not stable under
renormalization, and require massive fine tuning that cannot be explained by
any known mechanism.


title:
Global Analysis of the post-SNO Solar Neutrino Data for Standard and
  Non-Standard Oscillation Mechanisms

abstract:
  What can we learn from solar neutrino observations? Is there any solution to
the solar neutrino anomaly which is favored by the present experimental
panorama? After SNO results, is it possible to affirm that neutrinos have mass?
In order to answer such questions we analyze the current available data from
the solar neutrino experiments, including the recent SNO result, in view of
many acceptable solutions to the solar neutrino problem based on different
conversion mechanisms, for the first time, using the same statistical
procedure. This allows us to do a direct comparison of the goodness of the fit
among different solutions, from which we can discuss and conclude on the
current status of each proposed dynamical mechanism. These solutions are based
on different assumptions: (a) neutrino mass and mixing, (b) non-vanishing
neutrino magnetic moment, (c) the existence of non-standard flavor-changing and
non-universal neutrino interactions and (d) the tiny violation of the
equivalence principle. We investigate the quality of the fit provided by each
one of these solutions not only to the total rate measured by all the solar
neutrino experiments but also to the recoil electron energy spectrum measured
at different zenith angles by the Super-Kamiokande collaboration. We conclude
that several non-standard neutrino flavor conversion mechanisms provide a very
good fit to the experimental data which is comparable with (or even slightly
better than) the most famous solution to the solar neutrino anomaly based on
the neutrino oscillation induced by mass.


title: Discovering New Physics in the Decays of Black Holes

abstract:
  If the scale of quantum gravity is near a TeV, the LHC will be producing one
black hole (BH) about every second, thus qualifying as a BH factory. With the
Hawking temperature of a few hundred GeV, these rapidly evaporating BHs may
produce new, undiscovered particles with masses ~100 GeV. The probability of
producing a heavy particle in the decay depends on its mass only weakly, in
contrast with the exponentially suppressed direct production. Furthemore, BH
decays with at least one prompt charged lepton or photon correspond to the
final states with low background. Using the Higgs boson as an example, we show
that it may be found at the LHC on the first day of its operation, even with
incomplete detectors.


title:
Supersymmetry Explanation for the Puzzling Bottom Quark Production Cross
  Section

abstract:
  It has been known for a long time that the cross section for bottom-quark $b$
production at hadron collider energies exceeds theoretical expectations. An
additional contribution from pair-production of light gluinos $\tilde{g}$, of
mass 12 to 16 GeV, with two-body decays into bottom quarks and light bottom
squarks $\tilde{b}$, helps to obtain a $b$ production rate in better agreement
with data. The masses of the $\tilde{g}$ and $\tilde{b}$ are restricted further
by the ratio of like-sign to opposite-sign leptons at hadron colliders.
Constraints on this scenario from other data are examined, and predictions are
made for various processes such as Upsilon decay into $\tilde{b}'s$.


title: Rare B decays beyond B-> Xs gamma

abstract:
  I discuss recent progress in our understanding of exclusive rare and
semileptonic decays. I show the impact of HQET when combined with the
predictions in the Large Energy Limit of QCD, focusing first on applications to
$B\to K^*\ell^+\ell^+$. I also discuss the constraints on semileptonic
form-factors that appear in HQET/LEET with the use of radiative decay data, and
update these to include the effects of next-to-leading order contributions in
$B\to K^*\gamma$, as well as the latest data.


title: The reconstructed Big Bang from RHIC data

abstract:
  The final state of $Au + Au$ collisions at sqrt{s}=130 AGeV at RHIC has been
reconstructed within the framework of the Buda-Lund hydro model, by performing
a simultaneous fit to preliminary PHENIX and STAR data on two-particle
Bose-Einstein correlations and identified single particle spectra. The Hubble
constant of the expanding final state of this heavy ion collision is determined
to be H = <u_t> = 0.77 +- 0.09.


title:
Effective Lagrangian description of the lepton flavor violating decays
  Z-->li lj

abstract:
  A comprehensive analysis of the lepton flavor violating (LFV) decays Z-->li
lj is presented within the effective Lagrangian approach. Both the decoupling
and nondecoupling scenarios are explored. The experimental constraints from li
--> lj lk \bar{lk} and li -->lj gamma as well as some relationships arising
from the gauge invariance of the effective Lagrangian are used to put
constraints on Z-->li lj. It is found that while current experimental data
impose very strong constraints on Z-->mu e, the channel Z --> tau mu (e)still
may be at the reach of the planned TESLA collider.


title: Buckyballs and gluon junction networks on the femtometer scale

abstract:
  We explore the possibility that novel geometrical structures analogous to
carbon Fullerenes may exist in Nature on the femtometer scale. QCD predicts the
existence of special topological gluon field configurations called baryon
junctions and anti-junctions. Here we show that femto-scale structures,
networks or closed (gluon field) cages, can be constructed in the theory of QCD
as tiny cousins of familiar nano-scale structures such as carbonic Fullerenes
C_{60}, C_{70}. The most symmetric polyhedra of QCD junctions (J-balls) are
characterized by the magic numbers 8, 24, 48, and 120, and zero net baryon
number. Tubes, prisms, tori and other topological structures can also be
created. In addition, special configurations can be constructed that are odd
under charge and parity conjugation (CP), although the QCD Lagrangian is CP
even. We provide a semi-classical estimate for the expected mass range of QCD
Buckyballs and discuss the possible conditions under which such novel
topological excitations of the QCD vacuum may be produced in experiments of
high energy physics.


title: The Width Difference of $B_d$ Mesons

abstract:
  We estimate $\dg/\Gamma_d$, including $1/m_b$ contributions and part of the
next-to-leading order QCD corrections. We find that adding the latter
corrections decreases the value of $\dg/\Gamma_d$ computed at the leading order
by a factor of almost 2. We also show that under certain conditions an upper
bound on the value of $\dg/\Gamma_d$ in the presence of new physics can be
derived. With the high statistics and accurate time resolution of the upcoming
LHC experiment, the measurement of $\dg$ seems to be possible. This measurement
would be important for an accurate measurement of $\sin(2\beta)$ at the LHC. In
addition, we point out the possibility that the measurement of the width
difference leads to a clear signal for new physics.


title: Confinement and domain walls in high density quark matter

abstract:
  In this talk I will review some recent progress in our understanding of
properties of high density quark matter. This talk is based mainly on the
papers hep-ph/0011379, hep-ph/0012041, hep-ph/0108260, and cond-mat/0103451,
done in collaboration with D. Rischke, M. Stephanov, and A. Zhitnitsky.


title: Quintessence and Spontaneous Leptogenesis

abstract:
  We propose in this paper a scenario of spontaneous baryogenesis in
cosmological models of Quintessence by introducing a derivative coupling of the
Quintessence scalar $Q$ to the baryon current $J_B^{\mu}$ or the current of the
baryon number minus lepton number $J_{B-L}^{\mu}$. We find that with a
dimension-5 operator ${\partial_\mu Q} J_{B-L}^{\mu}$ suppressed by the Planck
mass $M_{pl}$ or the Grand Unification Scale $M_{GUT}$, baryon number asymmetry
$n_B/s \sim 10^{-10}$ can be naturally explained {\it via} leptogenesis. We
study also the isocurvature baryon number fluctuation generated in our model.


title: Positron polarisation and low energy running at a Linear Collider

abstract:
  The physics potential of an e+e- linear collider can be significantly
enhanced if both the electron and positron beams are polarised. Low energy
running at the Z-resonance or close to the W-pair threshold is particularly
attractive with polarised positrons. This note discusses the experimental
aspects and physics opportunities of both low energy running and positron
polarisation.


title: Meson Interferometry and the Quest for Quark-Gluon Matter

abstract:
  We point out what we may learn from the investigation of identical
two-particle interferometry in ultrarelativistic heavy ion collisions if we
assume a particular model scenario by the formation of a thermalized
quark-gluon plasma hadronizing via a first-order phase transition to an
interacting hadron gas. The bulk properties of the two-pion correlation
functions are dominated by these late and soft resonance gas rescattering
processes. %that diminish and alter even qualitatively the dependencies %on the
QCD equation of state. However, we show that kaons at large transverse momenta
have several advantages and a bigger sensitivity to the QCD phase transition
parameters.


title:
Progresses in the validation of the FLUKA atmospheric neutrino flux
  calculations

abstract:
  The FLUKA calculation of the atmospheric neutrino fluxes have been
cross-checked by comparing predictions on lepton fluxes in atmosphere to
experimental data. The dependence of predicted neutrino fluxes on the shape and
normalization of primary spectrum is also investigated


title: Study of Rapidity Gap Events in Hadronic Z Decays with L3 detector

abstract:
  Rapidity gaps have been studied in well separated completely symmetric 3 jet
events from hadronic Z decays to search for colour singlet exchange.
Asymmetries in particle flow and angular separation, defined with respect to
the inter-jet regions, are found to be sensitive to the exchange of a colour
singlet object instead of a colour octet gluon. %Comparing data from the L3
experiment with Monte Carlo predictions, %a limit is obtained on the fraction
%of colour singlet exchange in data. From a comparison of the distributions
observed in the L3 experiment and Monte Carlo predictions, a limit is obtained
on the fraction of colour singlet exchange in data.


title:
The LMA MSW Solution of the Solar Neutrino Problem, Inverted Neutrino
  Mass Hierarchy and Reactor Neutrino Experiments

abstract:
  In the context of three-neutrino oscillations, we study the possibility of
using antineutrinos from nuclear reactors to explore the 10^{-4} {\rm eV^2} <
\ms \ltap 8\times 10^{-4} {\rm eV^2} region of the LMA MSW solution of the
solar neutrino problem and measure $\ms$ with high precision. The KamLAND
experiment is not expected to determine $\ms$ if the latter happens to lie in
the indicated region. By analysing both the total event rate suppression and
the energy spectrum distortion caused by \bar{\nu}_e oscillations in vacuum, we
show that the optimal baseline of such an experiment is L \sim (20 - 25) km.
Furthermore, for 10^{-4} {\rm eV^2} < \ms \ltap 5\times 10^{-4} {\rm eV^2}, the
same experiment might be used to try to distinguish between the two possible
types of neutrino mass spectrum - with normal or with inverted hierarchy, by
exploring the effect of interference between the atmospheric- and solar- \Delta
m^2 driven oscillations; for larger values of \ms not exceeding 8.0\times
10^{-4} eV^2, a shorter baseline, L \cong 10 km, would be needed for the
purpose. The indicated interference effect modifies in a characteristic way the
energy spectrum of detected events. Distinguishing between the two types of
neutrino mass spectrum requires, however, a high precision determination of the
atmospheric \Delta m^2, a sufficiently large \sin^2\theta and a non-maximal
\sin^22\theta_{\odot}, where \theta and \theta_{\odot} are the mixing angles
respectively limited by the CHOOZ and Palo Verde data and characterizing the
solar neutrino oscillations. It also requires a relatively high precision
measurement of the positron spectrum in the reaction \bar{\nu}_e + p \to e^{+}
+ n.


title: Diquark condensate and quark interaction with instanton liquid

abstract:
  The interaction of light quarks and instanton liquid is analyzed at finite
density of quark/baryon matter and in the phase of nonzero values of diquark
(colour) condensate. It is shown that instanton liquid perturbation produced by
such an interaction results in an essential increase of the critical value of
quark chemical potential $\mu_c$ which provokes the perceptible increase of
quark matter density around the expected onset of the colour superconductivity
phase.


title: Discussion on a possible neutrino detector located in India

abstract:
  We have identified some important and worthwhile physics opportunitites with
a possible neutrino detector located in India. Particular emphasis is placed on
the geographical advantage with a stress on the complimentary aspects with
respect to other neutrino detectors already in operation.


title: Lepton Flavor Violation in the SUSY-GUT Models with Lopsided Mass Matrix

abstract:
  The tiny neutrino masses measured in the neutrino oscillation experiments can
be naturally explained by the supersymmetric see-saw mechanism. If the
supersymmetry breaking is mediated by gravity, the see-saw models may predict
observable lepton flavor violating effects. In this work, we investigate the
lepton flavor violating process $\mu\to e\gamma$ in the kind of neutrino mass
models based on the idea of the ``lopsided'' form of the charged lepton mass
matrix. The constraints set by the muon anomalous magnetic moment are taken
into account. We find the present models generally predict a much larger
branching ratio of $\mu\to e\gamma$ than the experimental limit. Conversely,
this process may give strong constraint on the lepton flavor structure.
Following this constraint we then find a new kind of the charged lepton mass
matrix. The feature of the structure is that both the elements between the 2-3
and 1-3 generations are ``lopsided''. This structure produces a very small 1-3
mixing and a large 1-2 mixing in the charged lepton sector, which naturally
leads to small $Br(\mu\to e\gamma)$ and the LMA solution for the solar neutrino
problem.


title: Super black hole as spinning particle: Supersymmetric baglike core

abstract:
  We consider particlelike solutions to supergravity based on the Kerr-Newman
black hole (BH) solution. The BH singularity is regularized by means of a phase
transition to a new vacuum state near the core region confining a dual gauge
field. Supersymmetric BPS-saturated domain wall model is suggested which can
provide this phase transition and formation the stable charged superconducting
core. For spinning particle the core takes the form of thin, relativistically
rotaiting disk.


title:
Dynamical relativistic corrections to the leptonic decay width of heavy
  quarkonia

abstract:
  We calculate the dynamical relativistic corrections, originating from
radiative one-gluon-exchange, to the leptonic decay width of heavy quarkonia in
the framework of a covariant formulation of Light-Front Dynamics. Comparison
with the non-relativistic calculations of the leptonic decay width of J=1
charmonium and bottomonium S-ground states shows that relativistic corrections
are large. Most importantly, the calculation of these dynamical relativistic
corrections legitimate a perturbative expansion in $\alpha_s$, even in the
charmonium sector. This is in contrast with the ongoing belief based on
calculations in the non-relativistic limit. Consequences for the ability of
several phenomenological potential to describe these decays are drawn.


title: Structure Functions are not Parton Probabilities

abstract:
  We explain why contrary to common belief, the deep inelastic scattering
structure functions are not related to parton probabilities in the target.


title: The Two-Loop QCD Matrix Element for $e^+e^- \to 3$ Jets

abstract:
  We compute the ${\cal O}(\alpha_s^3)$ virtual QCD corrections to the
$\gamma^*\to q\bar q g$ matrix element arising from the interference of the
two-loop with the tree-level amplitude and from the self-interference of the
one-loop amplitude. The calculation is performed by reducing all loop integrals
appearing in the two-loop amplitude to a small set of known master integrals.
Infrared and ultraviolet divergences are both regularized using conventional
dimensional regularization, and the ultraviolet renormalization is performed in
the $\bar{MS}$ scheme. The infrared pole structure of the matrix elements
agrees with the prediction made by Catani using an infrared factorization
formula. The analytic result for the finite terms of both matrix elements is
expressed in terms of one- and two-dimensional harmonic polylogarithms.


title: Complete LEP Data: Status of Higgs Boson Searches

abstract:
  The LEP experiments completed data-taking in November 2000. New preliminary
combined results of the four LEP experiments ALEPH, DELPHI, L3 and OPAL are
presented for various Higgs boson searches.


title: Physics Results from the AMANDA Neutrino Detector

abstract:
  In the winter season of 2000, the AMANDA (Antarctic Muon And Neutrino
Detector Array) detector was completed to its final state. We report on major
physics results obtained from the AMANDA-B10 detector, as well as initial
results of the full AMANDA-II detector.


title: Comparing fragmentation of strange quark in Z decays and K+p reactions

abstract:
  The ratios of the production rates K*(892)/K, phi/K, rho^0/pi, omega/pi,
Delta^{++}/p, Sigma+(1385)/Lambda, Xi^-/Lambda and their x_p dependences
obtained from results of the LEP and SLD experiments in Z hadronic decays are
analysed. The corresponding ratios for promptly produced mesons are estimated
at x_p -> 1. A comparison of the LEP results with those from the Mirabelle and
BEBC K+p experiments at 32 and 70 GeV/c shows striking similarity in
fragmentation of the strange valence quark of the incident K+ and strange
quarks produced in Z decays. The JETSET model describes the LEP, Mirabelle and
BEBC results. The model of Pei is consistent with the data for mesons, but
presumably underestimates the fractions of primary octet baryons. The quark
combinatorics model of Anisovich et al.is incompatible with the data.


title: Light-Cone Sum Rules for the Nucleon Form Factors

abstract:
  We argue that soft non-factorisable terms give a significant contribution to
the baryon form factors at intermediate momentum transfers and set up a
framework for the calculation of such terms in the light-cone sum rule
approach. Among them, contributions of three-quark states with different
helicity structure compared to the leading twist prove to be the most
important. The leading-order sum rules are derived and confronted with the
experimental data.


title: MSSM Constraints from Higgs Boson Searches

abstract:
  The LEP era has brought immense progress in searches for Higgs bosons over
the last 12 years which will guide searches at future colliders. The evolution
of the Higgs boson mass limits are reviewed with the focus on results from
general parameter scans in the Minimal Supersymmetric extension of the Standard
Model (MSSM) in contrast to the so-called benchmark limits. The hint for a
Standard Model (SM) Higgs boson of 115.6 GeV can also be interpreted as a
preference for a Higgs boson of that mass in the MSSM. Further small data
excesses allow the hypothesis that the neutral Higgs bosons of the MSSM all
have masses between 90 and 116 GeV.


title:
Relating production and masses of the vector and P-wave mesons for light
  and heavy flavours al LEP

abstract:
  The production rates of primary vector and P-wave mesons in Z hadronic decays
are analysed. The mass dependence of production rates for the bottom, charm,
strange charm and three families of the light-flavour mesons is found to be
very similar, allowing to relate the relative production rates for mesons with
different flavours and, possibly, their masses. The strange axial mesons
K_1(1273) and K_1(1402) might be assigned to the 1^+(1/2) and 1^+(3/2) levels
degenerate with the 0^+(1/2) and 2^+(3/2) levels of the K^*_0(1430) and
K^*_2(1430), respectively, if the observed K^*_0(1430) mass is replaced by its
``bare'' q\bar{q} mass corresponding to the K-matrix pole and close to the
K_1(1273) mass. Then the 0^+(1/2) and 1^+(1/2) levels are below the 1^+(3/2)
and 2^+(3/2) levels for the strange, charm and bottom mesons.


title: Analysis and interpretation of new low-energy Pi-Pi scattering data

abstract:
  The recently published E865 data on charged K_e4 decays and Pi-Pi phases are
reanalyzed to extract values of the two S-wave scattering lengths, of the
subthreshold parameters alpha and beta, of the low-energy constants l3-bar and
l4-bar as well as of the main two-flavour order parameters: <u-bar u> and F_pi
in the limit m_u = m_d = 0 taken at the physical value of the strange quark
mass. Our analysis is exclusively based on direct experimental information on
Pi-Pi phases below 800 MeV and on the new solutions of the Roy equations by
Ananthanarayan et al. The result is compared with the theoretical prediction
relating 2 a_0^0 - 5 a_0^2 and the scalar radius of the pion, which was
obtained in two-loop Chiral Perturbation Theory. A discrepancy at the 1-sigma
level is found and commented upon.


title: New Results on Flavor Physics

abstract:
  Recent progress in flavor physics is discussed. In particular, I review
theoretical and experimental developments relevant for semileptonic B decays
and the determination of |Vcb| and |Vub|, for exclusive rare decays, for
nonleptonic b->c decays and tests of factorization, and for D meson mixing.


title:
Flavordynamics with Conformal Matter and Gauge Theories on Compact
  Hyperbolic Manifolds in Extra Dimensions

abstract:
  We outline a toy model in which a unique mechanism may trigger a dynamical
chain resulting in key low-energy regularities. The starting points are a
negative cosmological term in the bulk and conformally invariant nongravity
sector. These elements ensure compactification of the extra dimensional space
on a compact hyperbolic manifold (with the negative and constant scalar
curvature). The overall geometry is then M_4 x B_n. The negative curvature on
B_n triggers the formation of the four-dimensional defect which provides in
turn a dynamical localization of ordinary particles. It also leads,
simultaneously, to a spontaneous breaking of gauge symmetry through a Higgs
mechanism. Masses of the fermions, gauge bosons and scalars all derive from the
curvature of the internal manifold such that the Higgs boson is generally
heavier than the gauge bosons. The factorizable geometry M_4 x B_n and flatness
of M_4 require fine-tuning.


title: Elementary Particles on a Dedicated Parallel Computer

abstract:
  Numerical simulation of lattice QCD is now an indispensable tool for
investigating non-perturbative properties of quarks at low energies. In this
paper, I introduce a recent lattice QCD calculation of light hadron spectrum
and quark masses performed on a dedicated parallel computer, CP-PACS. From a
simulation of QCD with two flavors of dynamical quarks, we find
$m_{ud}^{\bar{\rm MS}}(2{\rm GeV}) = 3.44^{+0.14}_{-0.22}$ MeV for the averaged
mass of $u$ and $d$ quarks to reproduce the experimental masses of $\pi$ and
$\rho$ mesons, and $m_{s}^{\bar{\rm MS}}(2{\rm GeV}) = 88^{+4}_{-6}$ MeV or
$90^{+5}_{-11}$ MeV to reproduce the $K$ or $\phi$ meson mass. These values are
about 20--30% smaller than the previous estimates using the quenched
approximation.


title:
Measurement of the Scaling Property of Factorial Moments in Hadronic Z
  Decay

abstract:
  Both three- and one-dimensional studies of local multiplicity fluctuations in
hadronic Z decay are performed using data of the L3 experiment at LEP. The
normalized factorial moments in three dimensions exhibit power-law scaling,
indicating that the fluctuations are isotropic, which correspends to a
self-similar fractal. A detailed study of the corresponding one-dimensional
moments confirms this conclusion. However, two-jet subsamples have anisotropic
fluctuations, correspending to a self-affine fractal. These features are, at
least qualitatively, reproduced by the Monte Carlo models \JETSET and \HERWIG.


title: Supersymmetric topological inflation model

abstract:
  We propose a topological inflation model in supergravity. In this model, the
vacuum expectation value (VEV) of a scalar field takes a value much larger than
the gravitational scale $M_{G} \simeq 2.4 \times 10^{18}$ GeV, which is large
enough to cause topological inflation. On the other hand, expansions of the
K\"ahler potential and the superpotential beyond the gravitational scale are
validated by the introduction of a Nambu-Goldstone-like shift symmetry. Thus,
topological inflation inevitably takes place in our model.


title:
Top-bottom mass hierarchy, $s-\mu$ puzzle and gauge coupling unification
  with split multiplets

abstract:
  A supersymmetric 5D SU(5) grand unification is considered. The SU(5) is
broken down to $G_{SM}=SU(3)\times SU(2)\times U(1)$ by the $Z_2\times Z_2'$
assignment of the bulk field(s). The matter fields are located at the fixed
point(s). In the bulk, a Higgs multiplet $\bar 5_H$(containing the bottom
doublet $H_1$) and the SU(5) gauge multiplet are located. At one fixed point,
$H_2$(the top doublet) and the standard model matter multiplets are presented.
Because of the difference of the locations of $H_1$ and $H_2$, one can obtain a
hierarchy between top and bottom Yukawa couplings. We also present a
possibility to understand the $s-\mu$ mass puzzle in this framework of the
split multiplet.


title: Evidence for Gluon Recombination in Deep Inelastic Scattering

abstract:
  The pomeron structure function is extracted from the latest H1 data and are
subject to a QCD analysis. The result shows evidence for gluon recombination.


title: B-Mesons on the Transverse Lattice

abstract:
  We present results from a first study of $B$-mesons that is based on a
transverse lattice formulation of light-front QCD. The shape of the Isgur-Wise
form factor is in very good agreement with experimental data. However, the
calculations yield rather large values for $f_B$ and $\bar{\Lambda}$ compared
to contemporary calculations based on other techniques.


title: Natural units, numbers and numerical clusters

abstract:
  Defined by Lord Kelvin as the science of measurement it is described a
fundamental fact of physics. The so called `natural' units represent the unique
system of units conveniently used in the realm of High Energy Physics. The
system of natural units is defined by the consistent providing of the
adimensional unit value to the velocity c of the eletromagnetic radiation in
the vacuum, related to the Maxwell classical electromagnetic theory and to the
special relativity theory, to the reduced Planck constant
$\hbar\equiv\frac{h}{2\pi}$ having the dimension of action, which is the
fundamental constant of the quantum mechanics as well as to the Boltzmann
constant $k_B$ which has the dimension of heat capacity, being the fundamental
constant associated to the statistical mechanics, $c=\hbar = k_B = 1$. Such
prescription is mandatory as we investigate the ultimate constituents of matter
and their dynamics, since the atoms, leptons and quarks up to the grand
unification, strings, superstrings, and the supergravity theories, as well as
the total unification of the interactions in the M-theory. The one-dimensional
character of this phenomenology is totally featured by the use of the natural
units, reflecting the fact that in order to be possible the investigation of
the fundamental constituents of matter it is being necessary the resolution of
lengths of the order of $10^{-16} cm$ or to reach energies of the order of at
least 1 TeV. The application of this system of natural units results
exceptionally adequate in the description of the Universe since the Planck
scale, up to the Hubble large scale expanding Universe, resulting in the
curious formation of the regular numerical clusters.


title: Scattering of light exotic atoms in excited states

abstract:
  The differential and total cross sections for the scattering of muonic,
pionic, kaonic and antiprotonic hydrogen in excited states from atomic hydrogen
have been calculated for the purpose of atomic cascade calculations. The
scattering problem is treated in a fully quantum mechanical framework which
takes the energy shifts and, in the case of the hadronic atoms, the widths of
the ns states into account. The validity of semiclassical approximations is
critically examined.


title:
The interplay of soft and hard contributions in the electromagnetic pion
  form factor

abstract:
  We consider various relativistic models for the valence Fock-state wave
function of the pion. These models are obtained from simple instant-form wave
functions by applying a Melosh rotation to the spin part and by imposing
physical constraints on the parameters. We discuss how the soft and the hard
(perturbative) parts of the electromagnetic form factor are affected by the
choice of the model and by the Melosh rotation.


title: Quasiquarks in two stream system

abstract:
  We study the collective quark excitations in an extremely anisotropic system
of two interpenetrating streams of the quark-gluon plasma. In contrast to the
gluon modes, all quark ones appear to be stable in such a system. Even more,
the quark modes in the two-stream system are very similar to those in the
isotropic plasma.


title: Solar neutrino experiments and Borexino perspectives

abstract:
  We present an updated analysis of all the data available about solar
neutrinos, including the charged current SNO results. The best fit of the data
is obtained in the Large Mixing Angle region, but different solutions are still
possible. We also study the perspectives of Borexino and conclude that this
experiment, with a parallel analysis of total rate and day-night asymmmetry,
should be able to discriminate between the different possible solutions.


title:
Comment on the sign of the pseudoscalar pole contribution to the muon
  g-2

abstract:
  We correct the error in the sign of the pseudoscalar pole contribution to the
muon g-2, which dominates the O(alpha^3) hadronic light-by-light scattering
effect. The error originates from our oversight of a feature of the algebraic
manipulation program FORM which defines the epsilon-tensor in such a way that
it satisfies the relation epsilon_{mu_1 mu_2 mu_3 mu_4} epsilon_{nu_1 nu_2 nu_3
nu_4} eta^{mu_1 nu_1} eta^{mu_2 nu_2} eta^{mu_3 nu_3} eta^{mu_4 nu_4} = 24,
irrespective of space-time metric. To circumvent this problem, we replaced the
product epsilon_{mu_1 mu_2 mu_3 mu_4} epsilon_{nu_1 nu_2 nu_3 nu_4} by -
eta_{mu_1 nu_1} eta_{mu_2 nu_2} eta_{mu_3 nu_3} eta_{mu_4 nu_4} \pm cdots in
the FORM-formatted program, and obtained a positive value for the pseudoscalar
pole contribution, in agreement with the recent result obtained by Knecht {\it
et al}.


title:
Status of four-neutrino mass schemes: a global and unified approach to
  current neutrino oscillation data

abstract:
  We present a unified global analysis of neutrino oscillation data within the
framework of the four-neutrino mass schemes (3+1) and (2+2). We include all
data from solar and atmospheric neutrino experiments, as well as information
from short-baseline experiments including LSND. If we combine only solar and
atmospheric neutrino data, (3+1) schemes are clearly preferred, whereas
short-baseline data in combination with atmospheric data prefers (2+2) models.
When combining all data in a global analysis the (3+1) mass scheme gives a
slightly better fit than the (2+2) case, though all four-neutrino schemes are
presently acceptable. The LSND result disfavors the three-active neutrino
scenario with only $\Delta m^2_{sol}$ and $\Delta m^2_{atm}$ at 99.9% CL with
respect to the four-neutrino best fit model. We perform a detailed analysis of
the goodness of fit to identify which sub-set of the data is in disagreement
with the best fit solution in a given mass scheme.


title: Solar Neutrinos with Magnetic Moment: Rates and Global Analysis

abstract:
  A statistical analysis of the solar neutrino data is presented assuming the
solar neutrino deficit to be resolved by the resonant interaction of the
neutrino magnetic moment with the solar magnetic field. Four field profiles are
investigated, all exhibiting a rapid increase across the bottom of the
convective zone, one of them closely following the requirements from recent
solar physics investigations. First a 'rates only' analysis is performed whose
best fits appear to be remarkably better than all fits from oscillations. A
global analysis then follows with the corresponding best fits of a comparable
quality to the LMA one. Despite the fact that the resonant spin flavour
precession does not predict any day/night effect, the separate SuperKamiokande
day and night data are included in the analysis in order to allow for a direct
comparison with oscillation scenarios. Remarkably enough, the best fit for
rates and global analysis which is compatible with most astrophysical bounds on
the neutrino magnetic moment is obtained from the profile which most closely
follows solar physics requirements. Allowing for a peak field value of
$3\times10^5G$, it is found in this case that $\Delta
m^2_{21}=1.45\times10^{-8}eV^2$, $\mu_{\nu}=3.2\times10^{-12}\mu_{B}$ (65%CL).
The new forthcoming experiments on solar neutrino physics (Kamland and
Borexino) will be essential to ascertain whether this fact is incidental or
essential.


title:
Strong and electromagnetic contributions to the U_A(1) anomaly and the
  P^0 to gamma gamma decays

abstract:
  Using flavor basis we relate flavor axial anomalies to the mass matrix of
pseudoscalar isoscalar fields in the context of a Linear Sigma Model which
includes U_A(1) symmetry breaking. We incorporate additional contributions to
these anomalies due to external electromagnetic fields invoking 't Hooft's
argument on anomaly matching and work out the predictions of this formalism for
eta to gamma gamma and eta' to gamma gamma decays. We show that the only effect
of the U_A(1) anomaly in these processes is in the formation of the eta and
eta' systems. From experimental data on their two photon decays we extract the
pseudoscalar mixing angle in flavor basis as phi_P in [38.4 deg, 41.0 deg ].


title:
Chiral meson masses at the critical point from QCD in the improved
  ladder approximation

abstract:
  Chiral meson masses at the critical point is investigated using QCD in the
improved ladder approximation. We calculate the effective potential at finite
temperature $T$ and quark chemical potential $\mu$ and find the critical point
at $T \simeq 95$ MeV, $\mu \simeq 290$ MeV. The chiral meson masses are
determined from the second derivative of the effective potential at its
minimum. We find that the sigma goes to massless at the critical point while
pion remains massive. Our results are consistent with that of the linear sigma
model in contrast to the Nambu--Jona-Lasinio model.


title:
Electroweak/GUT Domain Wall by Hawking Radiation: Baryogenesis and Dark
  Matter from Several Hundred kg Black Holes

abstract:
  A spherical domain wall around a small black hole is formed by the Hawking
radiation from the black hole in the symmetry-broken-phase of the field theory,
e.g., the Standard Model (SM) and the Grand Unified Theory (GUT) which have a
property of the phase transition. We have obtained two types of the spherical
domain wall; (a) thermalized wall which is formed by the local heating up near
black hole and symmetry restore locally and (b) dynamical wall which is formed
by the balance between the pressure from the Hawking radiation and the pressure
from the wall tensions. The electroweak wall is formed as a thermalized wall
around a black hole with mass of the several hundred kilogram. The GUT wall is
formed as a dynamical wall around much smaller black hole. The electroweak wall
around a black hole can produce baryon number by the assumption of the
CP-broken phase in the wall. The GUT wall can supply charge into the black
hole, namely, the wall causes the spontaneous charging up of the black hole. We
propose a cosmological model which can explain the origin of the baryon number
and the cold dark matter by the primordial black hole with mass of the several
hundred kilogram.


title: Theory of deeply virtual Compton scattering on the nucleon

abstract:
  We compute the cross section for leptoproduction of the real photon off the
nucleon, which is sensitive to the deeply virtual Compton scattering amplitude
with power accuracy. Our considerations go beyond the leading twist and involve
the complete analysis in the twist-three approximation. We discuss consequences
of the target and lepton beam polarizations for accessing the generalized
parton distributions from experimental measurements of the azimuthal angular
dependence of the final state photon or nucleon. We introduce several sets of
asymmetries, defined as Fourier moments with respect to the azimuthal angle,
which allow for a clear separation of the twist-two and -three sectors. Relying
on a simple ansatz for the generalized parton distributions, we give
quantitative estimates for azimuthal and spin asymmetries, discuss the
uncertainties of these predictions brought in by radiative corrections, and
compare them with experimental data as well as other theoretical expectations.
Furthermore, we derive a general parametrization of the DVCS amplitudes in the
region of small Bjorken variable.


title:
Complete next-to-leading order QCD corrections to charged Higgs boson
  associated production with top quark at the CERN Large Hadron Collider

abstract:
  The complete next-to-leading order (NLO) QCD corrections to charged Higgs
boson associated production with top quark through $b g \to tH^{-}$ at the CERN
Large Hadron Collider are calculated in the minimal supersymmetric standard
model (MSSM) and two-Higgs-doublet model in the $\bar{MS}$ scheme. The NLO QCD
corrections can reduce the scale dependence of the leading order (LO) cross
section. The K-factor (defined as the ratio of the NLO cross section to the LO
one) does not depend on $\tan\beta$ if the same quark running masses are used
in the NLO and LO cross sections, and varies roughly from $\sim 1.6$ to $\sim
1.8$ when charged Higgs boson mass increases from 200 GeV to 1000 GeV.


title:
The Cosmological Evolution of the Nucleon Mass and the Electroweak
  Coupling Constants

abstract:
  Starting from astrophysical indications that the fine structure constant
might undergo a small cosmological time shift, we discuss the implications of
such an effect from the point of view of particle physics. Grand unification
implies small time shifts for the nucleon mass, the magnetic moment of the
nucleon and the weak coupling constant as well. The relative change of the
nucleon mass is about 40 times larger than the relative change of alpha.
Laboratory measurements using very advanced methods in quantum optics might
soon reveal small time shifts of the nucleon mass, the magnetic moment of the
nucleon and the fine structure constant.


title: Neutron Beta Decay in a Left-Right Symmetric Model

abstract:
  We start from a Left-Right Symmetric Model and we analyze the beta decay of
the free neutron $n\to p+e^{-}+\bar{\nu}_{e}$. We applied this model to
incorporate the right currents, whereby we propose an amplitude whose leptonic
part contains the parameter $\lambda $ defined as left-right asymmetry
parameter which measures the parity violation. The analysis consists of seeing
how the spectrum of energy of the electrons, the total rate of decay, and the
lifetime $\tau $ of the neutron are affected by the left-right asymmetry
parameter, besides taking into account corrections of mass, that is, $m_{e}\neq
0$, $m_{p}\neq m_{n}$, and the recoil of the proton.


title: The (g-2)_mu data and the lightest Higgs boson in 2HDM(II)

abstract:
  The present limits on the lightest Higgs boson in 2HDM (II) in light of the
new E821 measurement of g-2 for the muon are discussed.


title: Calculations of Neutralino-Stop Coannihilation in the CMSSM

abstract:
  We present detailed calculations of the neutralino-stop coannihilation
channels that have the largest impact on the relic neutralino density in the
constrained minimal supersymmetric extension of the Standard Model (CMSSM), in
which scalar masses m_0, gaugino masses m_1/2 and the trilinear soft
supersymmetry-breaking parameters A_0 are each assumed to be universal at some
input grand unification scale. The most important stop-stop* and stop-stop
annihilation channels are also calculated, as well as stop-slepton
coannihilation channels. We illustrate the importance of these new
coannihilation calculations when A_0 is relatively large. While they do not
increase the range of m_1/2 and hence neutralino mass allowed by cosmology,
these coannihilation channels do open up new `tails' of parameter space
extending to larger values of m_0.


title:
Heavy Quark Production at the TEVATRON in the Semihard QCD Approach and
  the Unintegrated Gluon Distribution

abstract:
  Processes of heavy quark production at TEVATRON energies are considered using
the semihard (k_T factorization) QCD approach with emphasis of the BFKL
dynamics of gluon distributions. We investigate the dependence of the p_T
distribution of heavy quark production (presented in the form of integrated
cross-sections) on different forms of the unintegrated gluon distribution. The
theoretical results are compared with recent D0 and CDF experimental data on
beauty production.


title:
Radiative dileptonic decays of B-meson in the general two Higgs doublet
  model

abstract:
  We investigate the exclusive $B\to \gamma \ell^+ \ell^- $ decay in the
general two Higgs doublet model (model III) including the neutral Higgs boson
effects with an emphasis on possible CP-violating effects. For this decay, we
analyse the dependencies of the forward-backward asymmetry of the lepton pair,
$A_{FB}$, CP-violating asymmetry, $A_{CP}$, and the CP-violating asymmetry in
forward-backward asymmetry, $A_{CP}(A_{FB})$, on the model parameters and also
on the neutral Higgs boson effects. We have found that $A_{FB}\sim 10^{-1},
10^{-2}$, $A_{CP}\sim 10^{-2}, 10^{-1}$ and $A_{CP}(A_{FB}) \sim 10^{-2},
10^{-1}$ depending on the relative magnitude of the Yukawa couplings
$\bar{\xi}_{N,tt}^{U}$ and $\bar{\xi}_{N,bb}^{D}$ in the model III. We also
observe that these physical quantities are sensitive to the model parameters
and neutral Higgs boson effects are quite sizable for some values of the
coupling $\bar{\xi}_{N,\tau \tau}^{D}$.


title: The physics of anomalous glue

abstract:
  We give a brief overview of the physics of gluonic degrees of freedom
associated with the strong (QCD) axial anomaly. The role of this anomalous glue
in the spin structure of the proton and eta'-hadron interactions is discussed.


title:
Pion pole contribution to hadronic light-by-light scattering and muon
  anomalous magnetic moment

abstract:
  We derive an analytic result for the pion pole contribution to the
light-by-light scattering correction to the anomalous magnetic moment of the
muon, $a_\mu = (g_\mu-2)/2$. Using the vector meson dominance model (VMD) for
the pion transition form factor, we obtain $a_\mu^{{\rm LBL},\pi^0} = +56
\times 10^{-11}$.


title:
Dimming of Supernovae by Photon-Pseudoscalar Conversion and the
  Intergalactic Plasma

abstract:
  Recently Csaki, Kaloper and Terning (hep-ph/0111311) suggested that the
observed dimming of distant type Ia supernovae may be a consequence of mixing
of the photons with very light axions. We point out that the effect of the
plasma, in which the photons are propagating, must be taken into account. This
effect changes the oscillation probability and renders the dimming
frequency-dependent, contrary to observations. One may hope to accommodate the
data by averaging the oscillations over many different coherence domains. We
estimate the effect of coherence loss, either due to the inhomogeneities of the
magnetic field or of the intergalactic plasma. These estimates indicate that
the achromaticity problem can be resolved only with very specific, and probably
unrealistic, properties of the intergalactic medium.


title:
Breaking Eight-fold Degeneracies in Neutrino CP Violation, Mixing, and
  Mass Hierarchy

abstract:
  We identify three independent two-fold parameter degeneracies (\delta,
\theta_{13}), sgn(\delta m^2_{31}) and (\theta_{23}, \pi/2-\theta_{23})
inherent in the usual three-neutrino analysis of long-baseline neutrino
experiments, which can lead to as much as an eight-fold degeneracy in the
determination of the oscillation parameters. We discuss the implications these
degeneracies have for detecting CP violation and present criteria for breaking
them. A superbeam facility with a baseline at least as long as the distance
between Fermilab and Homestake (1290 km) and a narrow band beam with energy
tuned so that the measurements are performed at the first oscillation peak can
resolve all the ambiguities other than the (\theta_{23}, \pi/2-\theta_{23})
ambiguity (which can be resolved at a neutrino factory) and a residual (\delta,
\pi-\delta) ambiguity. However, whether or not CP violation occurs in the
neutrino sector can be ascertained independently of the latter two ambiguities.
The (\delta,\pi-\delta) ambiguity can be eliminated by performing a second
measurement to which only the \cos\delta terms contribute. The hierarchy of
mass eigenstates can be determined at other oscillation peaks only in the most
optimistic conditions, making it necessary to use the first oscillation
maximum. We show that the degeneracies may severely compromise the ability of
the proposed SuperJHF-HyperKamiokande experiment to establish CP violation. In
our calculations we use approximate analytic expressions for oscillation
probabilitites that agree with numerical solutions with a realistic Earth
density profile.