title: $\eta'(\eta)\to\gamma\gamma$: A Tale of Two Anomalies

abstract:
  The radiative decays of the pseudoscalar mesons $P=(\pi^0,\eta,\eta')$ are of
special interest as they provide an experimental window on the electromagnetic
and colour chiral $U_A(1)$ anomalies. $\pi^0\to\gamma\gamma$ is well described
by the electromagnetic $U_A(1)$ anomaly under the assumption that $\pi^0$ is a
Goldstone boson for spontaneously broken chiral symmetry, but the analogous
results for $\eta'(\eta)\to\gamma\gamma$ are complicated by the colour $U_A(1)$
anomaly in QCD. This paper reviews the theory of $\eta'(\eta)\to\gamma\gamma$
decays, emphasising the role of the colour $U_A(1)$ anomaly and the
renormalisation group. The relation to the Witten-Veneziano mass formula for
the $\eta'$ and the QCD topological susceptibility is derived. The implications
for the phenomenological analysis of $P\to\gamma\gamma$ are described and a
proposal is made for a comprehensive re-analysis of existing data on
$P\to\gamma\gamma$, $P\to V\gamma$, where $V=(\rho,\omega, \phi)$ is a light
$1^-$ meson, $\eta'(\eta)\to \pi\pi\gamma$, $\psi\to\eta'(\eta)\gamma$, etc.
Other applications, to the muon anomalous magnetic moment $g_\m-2$ and the
determination of the photon structure function $g_1^\gamma$ in polarised deep
inelastic scattering, are also briefly discussed.


title:
On the chromomagnetic expectation value \mu_G^2 and higher power
  corrections in heavy flavor mesons

abstract:
  The important parameter \mu_G^2 of the heavy quark expansion is analyzed
including perturbative and power corrections. It is found that \mu_G^2(2GeV) is
known with a few percent accuracy. The perturbative corrections are computed
and found small. A nonperturbative relation is suggested which allows to
control the power corrections. We conclude that \mu_G^2(1GeV)=(0.35+0.03-
0.02)GeV^2. The two-loop expression for the effective `ME' radiation coupling
alpha_s^(me)(\omega) is given which improves reliability of the perturbative
evolution of \mu_G^2 towards the low momentum scale. On the nonperturbative
side, we advocate the utility of combining the heavy quark expansion with
expanding around the `BPS'-type approximation for the meson wavefunction, which
implies relations \mu_\pi^2 \approx \mu_G^2 and -\rho_{LS}^3 \approx \rho_D^3
as well as similar ones for the nonlocal correlators.


title: Recent Progress in Heavy Quark Physics

abstract:
  Some of the recent progress in heavy quark physics is reviewed. Special
attention is paid to inclusive methods for determining Vub and factorization in
nonleptonic B decays. Theoretical predictions for top-antitop production near
threshold are also discussed.


title:
Analysis of pion electromagnetic form factor by the dispersion relation
  with QCD constraint

abstract:
  The pion electromagnetic form factor is investigated by using the dispersion
relation with the superconvergence condition, which was proposed to synthesize
the vector meson dominance model and QCD. The absorptive part is given as an
addition of the resonance and the QCD terms, the latter being parametrized so
as to realize the prediction of perturbative QCD. The experimental data are
analyzed and the parameters for the QCD part, the resonance part as well, are
determined. Existing experiments for the form factor are reproduced very well
both for the space-like and time-like momenta.


title:
Summary and Outlook for 9th International Symposium on Heavy Flavor
  Physics

abstract:
  This is the summary talk of a meeting held at the California Institute of
Technology Sept 10-13, 2001. I do not attempt to summarize all the beautiful
experimental results we have seen this week, nor to repeat the lively
theoretical discussions that have occurred. Rather I will present my own biased
perspective on what we have learned, and on the important tasks that need our
attention as we work to make the most of the rapidly accumulating data in this
field.


title:
Nonperturbative Aspect of Axial Vector Vertex in the Global Color
  Symmetry Model

abstract:
  It is shown how the axial vector current of current quarks is related to that
of constituent quarks within the framework of the global color symmetry model.
Gluon dressing of the axial vector vertex and the quark self-energy functions
is described by the inhomogeneous Bethe-Salpeter equation in the ladder
approximation and the Schwinger-Dyson equation in the rainbow approximation,
respectively.


title:
A Phenomenological Analysis of Higher Fock State Contributions to the
  $\chi_{cJ}$ Decays

abstract:
  We present a phenomenological analysis of higher Fack state contributions to
the $\chi_{cJ}$ decays by using the recent BES experimental data. It is found
that the higher Fock state $\mid (c\bar{c})_{8}g>$ makes an important
contributions to the inclusive and exclusive processes with respect to that
from the valence Fock state $\mid c\bar{c} >$ of the $\chi_{cJ}$ and some
constraints of these contributions are obtained for the $\chi_{c0}$ and
$\chi_{c2}$ states in order to fit the experimental data.


title: Summary of Working Group 1: Theory Part

abstract:
  I will summarize theoretical issues in Working Group 1 at Nufact'01. Although
there may not be complete agreement yet on the exact optimum baseline $L$ and
the muon energy $E_\mu$ for measurements of the CP phase at a neutrino factory,
all the works done so far indicate that the optimum set ($L$, $E_\mu$) tends to
be smaller than (3000km, 50GeV) if the uncertainty of the matter effect is
assumed to be larger than $\pm$5% or the background fraction is much larger
than $10^{-5}$.


title:
Solutions of the quantization conditions for the odderon charge q3 and
  conformal weight h

abstract:
  The quantization conditions which come from the requirement of the
singlevaluedness of the odderon wave function are formulated and solved
numerically in the 4 dimensional space of the odderon charge q3 and the
conformal weight h. It turns out that these conditions are fulfilled along one
dimensional curves parametrized by a discrete set of values of Re(h) in 3
dimensional subspace (Im(h),Im(q3),Re(q3)). The odderon energy calculated along
these curves corresponds in all cases to the intercept lower than 1.


title: Perturbative QCD Odderon and Diffractive eta_c Production

abstract:
  The Odderon state in perturbative QCD is briefly reviewed. Recent
calculations devoted to estimate the diffrative eta_c production at high
energies from the leading known Odderon states are discussed.


title:
Kinematical Lepton Transmutation in $e^+ e^-$ Collision and Vector Boson
  Decay

abstract:
  The change in orientation in generation space (rotation) of the fermion mass
matrix with changing scales can lead to flavour-violations through just the
kinematics of a non-diagonal mass matrix. Such effects for the reactions: $e^+
e^- \longrightarrow e^\pm \mu^\mp, e^\pm \tau^\mp, \mu^\pm \tau^\mp$, and for
the decays of vector bosons into the same channels, are calculated following a
method suggested earlier which gives the differential cross section for each
reaction and the branching ratio for each decay mode in terms of an overall
normalization depending only on the speed at which the mass matrix rotates. A
rotation speed estimated earlier, under certain assumptions from the fermion
mixing angles and mass ratios, is found to give the above effects at a level
readily detectable in modern high sensitivity experiments such as Bepc, Cleo,
BaBar and Belle, at least in principle. The observation of these effects would
not only confirm the concept of a rotating mass matrix with a significance on
par with the running coupling constant, but also offer some valuable insight
into the origin of fermion generations. However, a negative result cannot
unfortunately rule out the rotating mass matrix since the effects deduced here
from this mechanism alone could in principle be cancelled by other rotation
effects.


title: Baryon asymmetry and mass matrices

abstract:
  In the framework of the baryogenesis via leptogenesis mechanism we study the
link between the amount of baryon asymmetry and neutrino mass matrices. In
particular, neglecting phases, we find that if the Dirac neutrino mass matrix
is related to the up quark mass matrix, the baryon asymmetry is about three
orders smaller than the required value. If the Dirac neutrino mass matrix is
related to the down quark or the charged lepton mass matrix, the baryon
asymmetry is about two orders smaller than the required value. In order to get
a sufficient amount of baryon asymmetry we need a more moderate hierarchy in
the Dirac neutrino mass matrix.


title: B Physics and CP Violation

abstract:
  These lectures provide a basic overview of topics related to the study of CP
Violation in B decays. In the first lecture, I review the basics of discrete
symmetries in field theories, the quantum mechanics of neutral but
flavor-non-trivial mesons, and the classification of three types of CP
violation. The actual second lecture which I gave will be separately published
as it is my Dirac award lecture and is focussed on the separate topic of strong
CP Violation. In Lecture 2 here, I cover the Standard Model predictions for
neutral B decays, and in particular discuss some channels of interest for CP
Violation studies. Lecture 3 reviews the various tools and techniques used to
deal with the hadronic physics effects. In Lecture 4, I briefly review the
present and planned experiments that can study B decays. I cannot teach all the
details of this subject in this short course, so my approach is instead to try
to give students a grasp of the relevant concepts and an overview of the
available tools. The level of these lectures is introductory. I will provide
some references to more detailed treatments and current literature, but this is
not a review article so I do not attempt to give complete references to all
related literature. By now there are some excellent textbooks that cover this
subject in great detail. I refer students to these for more details and for
more complete references to the original literature.


title: Effective Theory for QCD in the LOFF Phase

abstract:
  After a review of the crystalline color superconductive (LOFF) phase, I
discuss the Nambu Goldstone Boson associated with the breaking of rotational
and translational invariance and I briefly consider possible astrophysical
implications.


title:
Establishing a No-Lose Theorem for NMSSM Higgs Boson Discovery at the
  LHC

abstract:
  We scan the parameter space of the NMSSM for the observability of at least
one Higgs boson at the LHC with $300\fbi$ integrated luminosity, taking the
present LEP2 constraints into account. We restrict the scan to those regions of
parameter space for which Higgs boson decays to other Higgs bosons and/or
supersymmetric particles are kinematically forbidden. We find that if
$WW$-fusion detection modes for a light Higgs boson are not taken into account,
then there are still significant regions in the scanned portion of the NMSSM
parameter space where no Higgs boson can be observed at the $5\sigma$ level,
despite the recent improvements in ATLAS and CMS procedures and techniques and
even if we combine all non-fusion discovery channels. However, if the
$WW$-fusion detection modes are included using the current theoretical study
estimates, then we find that for all scanned points at least one of the NMSSM
Higgs bosons will be detected. If the estimated $300\fbi$ significances for
ATLAS and CMS are combined, one can also achieve $5\sigma$ signals after
combining just the non-$WW$-fusion channels signals. We present the parameters
of several particularly difficult points, and discuss the complementary roles
played by different modes. We conclude that the LHC will discover at least one
NMSSM Higgs boson unless there are large branching ratios for decays to SUSY
particles and/or to other Higgs bosons.


title: Gluonic effects in eta and eta-prime physics

abstract:
  We review the theory and phenomenology of the axial U(1) problem with
emphasis on the role of gluonic degrees of freedom in eta and eta' production
processes, especially the low-energy pN -> pN eta and pN -> pN eta' reactions.


title:
On the imaginary parts and infrared divergences of two-loop vector boson
  self-energies in thermal QCD

abstract:
  We calculate the imaginary part of the retarded two-loop self-energy of a
static vector boson in a plasma of quarks and gluons of temperature T, using
the imaginary time formalism. We recombine various cuts of the self-energy to
generate physical processes. We demonstrate how cuts containing loops may be
reinterpreted in terms of interference between Order $\alpha$ tree diagrams and
the Born term along with spectators from the medium. We apply our results to
the rate of dilepton production in the limit of dilepton invariant mass E>>T.
We find that all infrared and collinear singularities cancel in the final
result obtained in this limit.


title: Measuring Absolute Branching Ratios of Charmed Baryons in $B$ Decays

abstract:
  The $B$ factories are expected to provide huge samples of single $B$ decay
events with little background by reconstructing one of the $B$ mesons produced
in $\Upsilon (4S)$ decays. This represents a new experimental paradigm: such
samples will allow to make measurements of a quality previously thought
unrealistic. As example we discuss how absolute branching ratios for exclusive
as well as inclusive charm baryon decays can be extracted. One starts out by
observing decays like $B^- \to \bar p X$ as a signature for $B^- \to \Lambda _c
\bar p X$ etc. and then exploits various correlations of the flavour of the $B$
meson with the baryon number of the (anti)proton and other observables like the
charge of a lepton, baryon number of another baryon etc. An integrated
luminosity of about 500 $fb^{-1}$ as could be available by 2005 should be
sufficient for the task.


title: Asymmetry of Strange Sea in Nucleons

abstract:
  Based on the finite-temperature field theory, we evaluate the medium effects
in nucleon which can induce an asymmetry between quarks and antiquarks of the
strange sea. The short-distance effects determined by the weak interaction can
give rise to $\delta m\equiv \Delta m_s-\Delta m_{\bar s}$ where $\Delta
m_{s(\bar s)}$ is the medium-induced mass of strange quark by a few KeV at
most, but the long-distance effects by strong interaction are sizable. Our
numerical results show that there exists an obvious mass difference between
strange and anti-strange quarks, as large as 10-100 MeV.


title:
CP violating transverse lepton polarizaion in $B\to D^{(*)}\ell\bar\nu$
  including tensor interactions

abstract:
  We give a model-independent analysis of CP violating lepton polarization in
the exclusive semileptonic B decay of $B\to D^{(*)}\ell\bar\nu$ including
dimension six four-fermion tensor interactions at the heavy quark limit. It is
shown that the tensor interactions should not be neglected if the associated
couplings are comparable to others. The effect of tensor interactions on the
transverse lepton polarization appears more dramatically in $B\to D$ than in
$B\to D^*$. In the leptoquark model, the average transverse lepton polarization
is estimated to be $|\bar{P^\perp_D}|\simeq 0.26$ and
$|\bar{P^\perp_{D^*}}|\simeq 0.076$ with commonly used model parameters.


title: Solution of the multi-reggeon compound state problem in multi-colour QCD

abstract:
  We study the properties of the colour-singlet compound states of reggeized
gluons in multi-colour QCD using their relation with noncompact Heisenberg spin
magnets. Applying the methods of integrable models, we calculate their spectrum
and discuss the application of the obtained results to high-energy asymptotics
of the scattering amplitudes in perturbative QCD.


title: Origins of single transverse spin asymmetries

abstract:
  Single transverse spin asymmetries in p-p -> pion + X and l-p -> l-pion + X
processes have been observed; their possible origins and connections are
investigated. A phenomenological description within a pQCD generalized
factorization scheme is discussed.


title:
Overpopulation of $\bar \Omega$ in pp collisions: a way to distinguish
  statistical hadronization from string dynamics

abstract:
  The $\bar{\Omega}/\Omega$ ratio originating from string decays is predicted
to be larger than unity in proton proton interactions at SPS energies ($E_{\rm
lab}$=160 GeV). The anti-omega dominance increases with decreasing beam energy.
This surprising behavior is caused by the combinatorics of quark-antiquark
production in small and low-mass strings. Since this behavior is not found in a
statistical description of hadron production in proton proton collisions, it
may serve as a key observable to probe the hadronization mechanism in such
collisions.


title:
Quark Fragmentation Functions in a Diquark Model for $\Lambda$
  Production

abstract:
  Using a simple quark-diquark model, we extract a set of unpolarized and
polarized fragmentation functions for the $\Lambda$ based on the available
unpolarized $\Lambda$ production data in $e^+ e ^- $ annihilation. It is found
that there is a strong SU(3) flavor symmetry breaking in the unpolarized
$\Lambda$ fragmentation functions and that the polarized $u$ and $d$ quark
contributions to the polarized $\Lambda$ fragmentation are positive in medium
and large $z$ region. The predictions of $\Lambda$-polarization with the
obtained quark fragmentation functions are compatible with the available data
on the longitudinally polarized $\Lambda$ produced in $e^+e^-$-annihilation,
polarized charged lepton deep inelastic scattering (DIS), and neutrino DIS. The
spin asymmetry for the $\Lambda$ production in $p\vec{p}$ collisions is also
predicted for a future test in experiments at RHIC-BNL.


title: Small x divergences in the Similarity RG approach to LF QCD

abstract:
  We study small x divergences in boost invariant similarity renormalization
group approach to light-front QCD in a heavy quark-antiquark state. With the
boost invariance maintained, the infrared divergences do not cancel out in the
physical states, contrary to previous studies where boost invariance was
violated by a choice of a renormalization scale. This may be an indication that
the zero mode, or nontrivial light-cone vacuum structure, might be important
for recovering full Lorentz invariance.


title: The Standard Model Effective Potential at Two Loops

abstract:
  We calculate the standard model effective potential to two loops using
minimal subtraction, and use the result to deduce the two-loop beta-functions
for the scalar mass and quartic self-interaction.


title:
Sensitivity to Doubly Charged Higgs bosons in the Process $e^- \gamma\
  to e^+ \mu^- \mu^-$

abstract:
  We study the sensitivity to doubly charged Higgs bosons, $\Delta^{--}$, in
the process $e^-\gamma\to e^+ \mu^-\mu^-$ for centre of mass energies
appropriate to future high energy $e^+e^-$ collider proposals. For $M_\Delta <
\sqrt{s_{e\gamma}}$ discovery is likely for even relatively small values of the
Yukawa coupling to leptons. However, even far above threshold, evidence for the
$\Delta$ can be seen due to contributions from virtual intermediate $\Delta$'s
although, in this case, $\mu^-\mu^-$ final states can only be produced in
sufficient numbers for discovery for relatively large values of the Yukawa
couplings.


title: Physics at HERA II

abstract:
  Deep inelastic electron proton scattering at HERA II will allow precise
studies of QCD and stringent tests of physics beyond the standard model. We
discuss these two aspects of DIS with emphasis on the regime of high gluon
densities at small $x$ and on scalar quark production in supersymmetric
theories with broken R-parity.


title:
Renormalization of Self-consistent Approximation schemes Finite
  Temperature II: Applications to the Sunset Diagram

abstract:
  The theoretical concepts for the renormalization of self-consistent Dyson
resummations, deviced in the first paper of this series, are applied to first
example cases for the $\phi^4$-theory. Besides the tadpole (Hartree)
approximation as a novel part the numerical solutions are presented which
includes the sunset self-energy diagram into the self-consistent scheme based
on the $\Phi$-derivable approximation or 2PI effective action concept.


title: Decoherence, instantons, and cosmological horizons

abstract:
  We consider the possibility that tunneling in a degenerate double-well
potential in de Sitter spacetime leads to coherent oscillations of quantum
probability to find the system in a given well. We concentrate on the case when
the mass scale of the potential is much larger than the Hubble parameter and
present a procedure for analytical continuation of the ``time''-dependent
instantons, which allows us to study the subsequent real-time evolution. We
find that the presence of the de Sitter horizon makes tunneling completely
incoherent and calculate the decoherence time. We discuss the difference
between this case and the case of a $\theta$-vacuum, when tunneling in de
Sitter spacetime preserves quantum coherence.


title: Neutrino Masses in GUTs and the Baryon Asymmetry

abstract:
  We discuss the implications of large neutrino mixings for grand unified
theories based on the seesaw mechanism. In SU(5) GUTs large mixings can be
accomodated by means of $U(1)_F$ flavour symmetries. In these models the heavy
Majorana neutrinos are essentially decoupled from low energy neutrino physics.
On the contrary in SO(10) GUTs large neutrino mixings severely constrain the
mass spectrum of the heavy Majorana neutrinos. This leads to predictions for a
variety of observables in neutrino physics as well as for the cosmological
baryon asymmetry.


title:
Vacuum condensates and the pion wave functions in the nonlocal chiral
  model

abstract:
  We use the simple instanton motivated Nambu Jona-Lasinio - type model to
calculate a twist 3 pseudoscalar pion light cone wave function. Using
normalisation condition for this wave function we calculate the quark
condensate and also the gluon condensate, which agree with the phenomenological
values for these quantities. Since we can compute also the k_T^2 dependence of
the light cone wave functions, we calculate k_T^2 moments of the pseudo-scalar
and axial-vector wave functions which are related to the mixed vacuum
condensates. This allows us to extract the condensates and compare them with
existing estimates.


title: Remark on the perturbative component of inclusive $\tau$-decay

abstract:
  In the context of the inclusive $\tau$-decay, we analyze various forms of
perturbative expansions which have appeared as modifications of the original
perturbative series. We argue that analytic perturbation theory, which combines
renormalization-group invariance and $Q^2$-analyticity, has significant merits
favoring its use to describe the perturbative component of $\tau$-decay.


title: Phenomenology of Bilinear Broken R-parity

abstract:
  The straightforward supersymmetrization of the Standard Model (SM) results in
a phenomenologically inconsistent theory in which Baryon number ($B$) and
Lepton number ($L$) are violated by dimension 4 operators, inducing fast proton
decay. Proton stability allows only for separate $L$ or $B$ violation and, if
neutrinos are massive Majorana particles, $L$ violating terms must be present.
In this thesis I will study a Supersymmetric Standard Model (SSM) realization
with $B$ conservation and minimal $L$ violation. In this framework $L$ is
mildly violated only by super-renormalizable terms, allowing for small neutrino
Majorana masses. This model is more predictive than the Baryon-Parity SSM. The
induced dimension 4 $L$ violating couplings are not arbitrary, and
automatically satisfy all experimental constraints. After introducing the
theoretical framework for supersymmetric models without Lepton number, I will
discuss the phenomenology of the (unstable) lightest neutralino and of the
lightest stop. I will show that the leptonic decays of the stop can be related
to the neutrino parameters, and in particular their measurement can indirectly
probe the size of the solar neutrinos mixing angle.


title: Supernova neutrino oscillations: A simple analytical approach

abstract:
  Analyses of observable supernova neutrino oscillation effects require the
calculation of the electron (anti)neutrino survival probability P_ee along a
given supernova matter density profile. We propose a simple analytical
prescription for P_ee, based on a double-exponential form for the crossing
probability and on the concept of maximum violation of adiabaticity. In the
case of two-flavor transitions, the prescription is shown to reproduce
accurately, in the whole neutrino oscillation parameter space, the results of
exact numerical calculations for generic (realistic or power-law) profiles. The
analytical approach is then generalized to cover three-flavor transitions with
(direct or inverse) mass spectrum hierarchy, and to incorporate Earth matter
effects. Compact analytical expressions, explicitly showing the symmetry
properties of P_ee, are provided for practical calculations.


title: Baryogenesis at the end of hybrid inflation

abstract:
  The baryon asymmetry of the universe may originate in the phase transition at
the end of hybrid inflation, provided that the reheat temperature is low
enough. I show that if the field that triggers the end of inflation is the
electroweak Higgs field and CP is violated, the transition leads to baryon
asymmetry even if no preheating or non-thermal symmetry restoration takes
place. I estimate the strength of this effect and the constraints it imposes on
the inflationary model.


title: BRST symmetries in SU(3) linear sigma model

abstract:
  We study the BRST symmetries in the SU(3) linear sigma model which is
constructed through introduction of a novel matrix for the Goldstone boson
fields satisfying geometrical constraints embedded in SU(2) subgroup. To treat
these constraints we exploit the improved Dirac quantization scheme. We also
discuss phenomenological aspacts in the mean field approach to this model.


title:
Asymptotic properties of high-pT particle production in hadron-hadron,
  hadron-nucleus and nucleus-nucleus collisions at high energies

abstract:
  The concept of z-scaling reflecting the general features of particle
substructure, constituent interaction and mechanism of particle formation is
reviewed. Experimental data on the cross sections obtained at ISR, SpS and
Tevatron are used in the analysis. The properties of data z-presentation, the
energy and angular independencies, the power law, A- and F-dependencies, are
discussed. The use of z-scaling to search for new physics phenomena in
hadron-hadron, hadron-nucleus and nucleus-nucleus collisions is suggested. The
violation of z-scaling characterized by the change of the fractal dimension is
considered as a new and complimentary signature of nuclear phase transition.


title:
Majorana Neutrinos, CP-Violation, Neutrinoless Double-Beta and
  Tritium-Beta Decays

abstract:
  If the present or upcoming searches for neutrinoless double beta decay give a
positive result, the Majorana nature of massive neutrinos will be established.
  From the determination of the value of the effective Majorana mass parameter
|<m>|, it would be possible to obtain information on the type of neutrino mass
spectrum. Assuming 3-neutrino mixing and massive Majorana neutrinos, we discuss
the information a measurement of, or an upper bound on, |<m>| can provide on
the value of the lightest neutrino mass m1. With additional data on the
neutrino masses obtained in tritium beta decay experiments, it might be
possible to establish whether the CP-symmetry is violated in the lepton sector.
This would require very high precision measurements. If CP-invariance holds,
the allowed patterns of the relative CP-parities of the massive Majorana
neutrinos would be determined.


title:
Determination of vector meson properties by matching resonance
  saturation to a constituent quark model

abstract:
  The properties of mesonic resonances can be calculated in terms of the
low-energy coefficients of chiral perturbation theory (chiPT) by extending
unitarized chiPT to higher energies. On the other hand these low-energy
coefficients can be calculated in two different models, namely (i) by assuming
resonance saturation and (ii) within a constituent quark model. By matching the
expressions of the two models combined with the results of unitarized chiPT and
the Weinberg sum rules the properties of vector and axial-vector mesons can be
calculated in the combined large-N_c and chiral limit.


title: Gauge Coupling Unification with Anomalous U(1)_A Gauge Symmetry

abstract:
  Recently we proposed a natural scenario of grand unified theories with
anomalous U(1)_A gauge symmetry, in which doublet-triplet splitting is realized
in SO(10) unification using Dimopoulos-Wilczek mechanism and realistic quark
and lepton mass matrices can be obtained in a simple way. The scenario has an
additional remarkable feature that the symmetry breaking scale and the mass
spectrum of super heavy particles are determined essentially by anomalous
U(1)_A charges. Therefore once all the anomalous U(1)_A charges are fixed, the
gauge coupling flows can be calculated. We examine several models in which the
gauge coupling unification is realized. Examining the conditions for the
coupling unification, we show that when all the fields except those of the
minimal SUSY standard model become super-heavy, the unification scale
generically becomes just below the usual GUT scale \Lambda_G\sim 2\times
10^{16} GeV and the cutoff scale becomes around \Lambda_G. Since the lower GUT
scale leads to shorter life time of nucleon, the proton decay via dimension six
operator p\to e^+\pi^0 can be seen in future experiment. On the other hand, the
lower cutoff scale than the Planck scale may imply the existence of extra
dimension in which only gravity modes can propagate.


title:
An interpolation of the vacuum polarization function for the evaluation
  of hadronic contributions to the muon anomalous magnetic moment

abstract:
  We propose a simple parameterization of the two-point correlator of hadronic
electromagnetic currents for the evaluation of the hadronic contributions to
the muon anomalous magnetic moment. The parameterization is explicitly done in
the Euclidean domain. The model function contains a phenomenological parameter
which provides an infrared cutoff to guarantee the smooth behavior of the
correlator at the origin in accordance with experimental data in e+ e-
annihilation. After fixing a numerical value for this parameter from the
leading order hadronic contribution to the muon anomalous magnetic moment the
next-to-leading order results related to the vacuum polarization function are
accurately reproduced. The properties of the four-point correlator of hadronic
electromagnetic currents as for instance the so-called light-by-light
scattering amplitude relevant for the calculation of the muon anomalous
magnetic moment are briefly discussed.


title:
Renormalization-group running of the cosmological constant and its
  implication for the Higgs boson mass in the Standard Model

abstract:
  The renormalization-group equation for the zero-point energies associated
with vacuum fluctuations of massive fields from the Standard Model is examined.
Our main observation is that at any scale the running is necessarily dominated
by the heaviest degrees of freedom, in clear contradistinction with the
Appelquist & Carazzone decoupling theorem. Such an enhanced running would
represent a disaster for cosmology, unless a fine-tuned relation among the
masses of heavy particles is imposed. In this way, we obtain $m_H \simeq 550
GeV$ for the Higgs mass, a value safely within the unitarity bound, but far
above the more stringent triviality bound for the case when the validity of the
Standard Model is pushed up to the grand unification (or Planck) scale.


title: Instanton IR stabilization in the nonperturbative confining vacuum

abstract:
  The influence of nonperturbative fields on instantons in quantum
chromodynamics is studied. Nonperturbative vacuum is described in terms of
nonlocal gauge invariant vacuum averages of gluon field strength. Effective
action for instanton is derived in bilocal approximation and it is demonstrated
that stochastic background gluon fields are responsible for infra-red (IR)
stabilization of instantons. Dependence of characteristic instanton size on
gluon condensate and correlation length in nonperturbative vacuum is found. It
is shown that instanton size in QCD is of order of 0.25 fm. Comparison of
obtained instanton size distribution with lattice data is made.


title:
Two-loop effective potential for a general renormalizable theory and
  softly broken supersymmetry

abstract:
  I compute the two-loop effective potential in the Landau gauge for a general
renormalizable field theory in four dimensions. Results are presented for the
\bar{MS} renormalization scheme based on dimensional regularization, and for
the \bar{DR} and \bar{DR}' schemes based on regularization by dimensional
reduction. The last of these is appropriate for models with softly broken
supersymmetry, such as the Minimal Supersymmetric Standard Model. I find the
parameter redefinition which relates the \bar{DR} and \bar{DR}' schemes at
two-loop order. I also discuss the renormalization group invariance of the
two-loop effective potential, and compute the anomalous dimensions for scalars
and the beta function for the vacuum energy at two-loop order in softly broken
supersymmetry. Several illustrative examples and consistency checks are
included.


title: Soft Colour Interactions and Diffractive Hard Scattering at the Tevatron

abstract:
  We make a brief presentation of the soft colour interactions models, the Soft
Colour Interaction and the Generalised Area Law, and summarise the results when
they are applied to p-pbar scattering. The models give a good description of
the Tevatron data on production of W, bottom and jets in diffractive events, as
well as jets with two rapidity gaps, alternatively leading particles. We also
give predictions for diffractive J/psi production and discuss diffractive Higgs
production at the Tevatron and LHC.


title: Jet quenching as a probe of gluon plasma formation

abstract:
  We study, in a pQCD calculation augmented by nuclear effects, the jet energy
loss needed to reproduce the pi^0 spectra in Au+Au collisions at large p_T,
measured by PHENIX at RHIC. The transverse width of the parton momentum
distributions (intrinsic-k_T) is used phenomenologically to obtain a reliable
baseline pp result. Jet quenching is applied to the nuclear spectra (including
shadowing and multiscattering) to fit the data.


title: Isospin Breaking in Low-Energy Charged Pion and Kaon Elastic Scattering

abstract:
  We use chiral perturbation theory to evaluate the scattering amplitude for
the process Pi^+ K^- to Pi^+ K^- at leading and next-to-leading orders in the
chiral counting and in the presence of isospin breaking effects. We also
discuss the influence of the latter on the combination of the S-wave Pi K
scattering lengths which is relevant for the 2S - 2P energy levels shift of K
Pi atoms.


title: Quark pair simulation near threshold : Reweighting and hadronization

abstract:
  Methods are presented allowing a realistic, experiment-based simulation of
low-mass quark pairs coupling to a virtual photon. Differential cross-section
reweighting factors allow to reproduce the resonant structure observed near
quark pair production thresholds, and an algorithm is proposed that allows
hadronization of the light quarks in the very low mass region, where existing
theory-based models are expected to break down. The corresponding routines can
be embedded in two- and four-fermion generators for e+e- machines.


title:
Chemical equilibration of U(1) charged particles in a thermal
  environment

abstract:
  We discuss chemical equilibration of particles carrying non-vanishing quantum
numbers related with U(1) internal symmetry. We construct the transport
equation for the time evolution of particle multiplicities and their
probability functions. The solution of these equations is obtained in different
limiting cases. It is argued that a U(1) charged particles, dependent on
thermal conditions inside a fireball, approaches different equilibrium limits.
The differences between kinetics of abundantly and rarely produced particles
are explained.


title: Bimaximal Neutrino Mixings from Lopsided Mass Matrices

abstract:
  Current solar and atmospheric neutrino oscillation data seem to favor a
bimaximal pattern for neutrino mixings where the matrix elements U_{e2} and
U_{\mu 3} are of order one, while U_{e3} is much smaller. We show that such a
pattern can be obtained quite easily in theories with ``lopsided'' mass
matrices for the charged leptons and the down type quarks. A relation
connecting the solar and atmospheric neutrino mixing angles is derived,
\tan^2\theta_{atm} \simeq 1+ \tan^2\theta_{sol}, which predicts \sin^2
2\theta_{atm} \simeq 0.97 corresponding to the best fit LMA solution for solar
neutrinos. Predictive schemes in SO(10) realizing these ideas are presented. A
new class of SO(10) models with lopsided mass matrices is found which makes use
of an adjoint VEV along the I_{3R} direction, rather than the traditional B-L
direction.


title:
Analytic Form Factors of Hydrogenlike Atoms for Discrete-Continuum
  Transitions. I. Transitions from $nS$-States

abstract:
  The new approach for calculation of transition form factors of hydrogenlike
atoms is proposed. The explicit expressions for form factors of transitions
from bound $nS$-states to continuum in terms of the classical polynomials are
derived


title: Testing the Standard Model at the Fermilab Tevatron

abstract:
  In this note we study the prospect of high-precision measurements of W boson
mass, top quark mass, and forward-backward asymmetry in Z->ee decays and the
search for the Higgs boson during Run 2 to challenge the standard model.


title:
European Perspectives for Electron-Nucleon Scattering at the Luminosity
  Frontier

abstract:
  European perspectives are discussed on fixed-target electron or positron
scattering experiments using polarized and unpolarized beams and targets in
various combinations. The goal envisioned is a deep and complete understanding
of the momentum and spin structure of hadrons in the context of Quantum Chromo
Dynamics, based on measurements at moderate and low photon virtualities. This
program can be realized by performing electron-nucleon experiments with high
resolution and high luminosity, at beam energies of at least 25-30 GeV.


title: Higgs bosons may be sneutrinos

abstract:
  In a GUT scenario with unconventional supersymmetry, Higgs bosons can be
sneutrinos.


title: Cosmological Magnetogenesis: what we know and what we would like to know

abstract:
  Problems and perspectives concerning the existence of large-scale magnetic
fields are described. Heeding observations, possible origins and implications
of magnetic fields in spiral galaxies and in regular clusters are scrutinized
in different cosmological frameworks including scenarios where conformal
invariance is broken because of the evolution of the gauge couplings.The
generation of the BAU via hypermagnetic knots is reviewed. It is also argued
that stochastic GW backgrounds can be generated in the LISA frequency range
thanks to the presence of hypermagnetic fields.


title:
Fading out of J/psi color transparency in high energy heavy ion
  peripheral collisions

abstract:
  We provide predictions for the J/psi coherent production in the peripheral
heavy ion collisions at LHC and at RHIC using the leading twist model of
nuclear shadowing based on the QCD factorization theorem for diffraction and
the HERA hard diffraction data. We demonstrate that for the LHC kinematics this
model leads to a bump-shape distribution in rapidity which is suppressed
overall as compared to the expectations of the color transparency regime by a
factor 6. This is significantly larger suppression than that expected within
the impact parameter eikonal model. Thus we show that the interaction of
spatially small wave package for which the total cross section of interaction
with nucleons is small is still strongly shadowed by nuclear medium in high
energy processes.


title:
Electroweak Precision Data, Light Sleptons and Stability of the SUSY
  Scalar Potential

abstract:
  The light slepton-sneutrino scenario with non-universal scalar masses at the
GUT scale is preferred by the electroweak precision data. Though a universal
soft breaking mass at or below the Plank scale can produce the required
non-universality at the GUT scale through running, such models are in conflict
with the stability of the electroweak symmetry breaking vacuum. If the
supergravity motivated idea of a common scalar mass at some high scale along
with light sleptons is supported by future experiments that may indicate that
we are living in a false vacuum. In contrast SO(10) D-terms, which may arise if
this GUT group breaks down directly to the Standard Model, can lead to this
spectrum with many striking phenomenological predictions, without jeopardizing
vacuum stability.


title: Initial state of the QGP from perturbative QCD + saturation

abstract:
  The production of the initial state of the QGP in very high-energy $AA$
collisions is discussed within the framework of perturbative QCD and
saturation. The next-to-leading order computation of the transverse energy of
minijets is reviewed. Saturation of parton production, conjectured to occur at
a dynamically determinable perturbative scale, leads to estimates of the
initial densities. The final state multiplicities are predicted by assuming an
isentropic hydrodynamical further evolution. Comparison with RHIC data is
shown.


title: How sensitive is a neutrino factory to the angle $\theta_{13}$?

abstract:
  We consider the impact of non-standard interactions of neutrinos (NSI) on the
determination of neutrino mixing parameters at a neutrino factory using
$\pnu{e}\to\pnu{\mu}$ ``golden channels'' for the measurement of $\theta_{13}$.
We show how a small residual NSI leads to a drastic loss in sensitivity in
$\theta_{13}$, of up to two orders of magnitude. This can be somewhat overcome
if two baselines are combined.


title: Two-dimensional QCD in the Coulomb gauge

abstract:
  In the present paper we discuss various aspects of the 't Hooft model for
two-dimensional QCD in the limit of infinite number of colours in the Coulomb
gauge. The properties of mesonic excitations are addressed, with special
attention paid to the pionic one. The twofold role of the pion is discussed:
being a genuine quark-antiquark state it is also a Goldstone boson of
two-dimensional QCD. In particular, it is demonstrated explicitly how the
soft-pion theorems are satisfied. It is pointed out that the Coulomb-gauge
choice seems to be indispensable in studies of hadronic observables with the
pions involved.


title: Higgs Boson Production Rates in Hadronic Collisions

abstract:
  Higgs boson production rates at hadron colliders are reviewed with particular
emphasis on progress in the calculation of higher order QCD effects. Emphasis
is placed on the uncertainties in the predictions for Higgs boson production. A
firm understanding of these uncertainties is crucial for extracting new physics
signals.


title: Probing colored glass via $q\bar{q}$ photoproduction II: diffraction

abstract:
  In this paper, we consider the diffractive photoproduction of quark-antiquark
pairs in peripheral heavy ion collisions. The color field of the nuclei is
treated within the Colored Glass Condensate model. The cross-section turns out
to be very sensitive to the value of the saturation scale.


title: Measures of Charge Fluctuations in Nuclear Collisions

abstract:
  The properties of two measures of charge fluctuations D and Delta Phi_q are
discussed within several toy models of nuclear collisions. In particular their
dependence on mean particle multiplicity, multiplicity fluctuations and net
electric charge are studied. It is shown that the measure Delta Phi_q is less
sensitive to these trivial biasing effects than the originally proposed measure
D. Furthermore the influence of resonance decay kinematics is analysed and it
is shown that it is likely to shadow a possible reduction of fluctuations due
to QGP creation.


title:
Size of the neutralino--nucleon cross--section in the light of a new
  determination of the pion--nucleon sigma term

abstract:
  We discuss the implications of a new determination of the pion-nucleon sigma
term for the evaluation of the neutralino-nucleon cross-section, and, in turn,
for detection rates for relic neutralinos in WIMP direct experiments and in
some of the indirect searches. It is shown that the new range for the
pion-nucleon sigma term, taken at its face value, favours values of the
neutralino-nucleon cross-sections which are sizeably larger than some of the
current estimates. Implications for neutralino cosmological properties are
derived.


title: Black Hole Production Rates at the LHC: Still Large

abstract:
  We examine the rates for the production of black holes(BH) at the LHC in
light of the exponential suppression of the geometric cross section estimate
proposed by Voloshin. We show that these rates will still be quite large over a
reasonable range of model parameters. While BH production may not be the
dominant process, its unique signature will ensure observability over
conventional backgrounds.


title:
Summing Divergent Perturbative Series in a Strong Coupling Limit. The
  Gell-Mann - Low Function of the \phi^4 Theory

abstract:
  An algorithm is proposed for determining asymptotics of the sum of a
perturbative series in the strong coupling limit using given values of the
expansion coefficients. Operation of the algorithm is illustrated by test
examples, method for estimating errors is developed, and an optimization
procedure is described. Application of the algorithm to the $\phi^4$ theory
gives a behavior $\beta(g)\approx 7.4 g^{0.96}$ at large $g$ for its Gell-Mann
-- Low function. The fact that the exponent is close to unity can be
interpreted as a manifestation of the logarithmic branching of the type
$\beta(g)\sim g (\ln g)^{-\gamma}$ (with $\gamma\approx 0.14$), which is
confirmed by independent evidence. In any case, the $\phi^4$ theory is
internally consistent. The procedure of summing perturbartive series with
arbitrary values of expansion parameter is discussed.


title: Small-x QCD Effects in Particle Collisions at High Energies

abstract:
  Recent theoretical developments to calculate cross sections of hadronic
objects in the high energy limit are summarised and experimental attempts to
establish the need for new QCD effects connected with a resummation of small
hadron momentum fractions x are reviewed.
  The relation between small-$x$ parton dynamics and the phenomenon of
diffraction is briefly out-lined. In addition, a search for a novel,
non-perturbative QCD effect, the production of QCD instanton induced events, is
presented.


title: Thermal Effects And Flat Direction Baryogenesis

abstract:
  In this paper we provide a detailed numerical study of the influence of
thermal effects on the original picture of AD baryogenesis. These effects are
found to modify the results greatly in some cases. We estimate the
baryon/entropy ratio and provide numerical results on the typical behavior of
the charge as a function of the strength of the potential and other parameters.


title:
Phase space veto method for next-to-leading order event generators in
  hadronic collisions

abstract:
  A method for organizing next-to-leading order QCD calculations using a veto
which enforces the cancellations between virtual and real emission diagrams is
applied to hadronic collisions. The method employs phase space slicing with the
slicing parameter determined dynamically event-by-event. It allows for the
generation of unweighted events and can be consistently merged with a parton
shower. The end product is more intuitive for the end user, as it is
probabilistic, and can be easily interfaced to general purpose showering and
hadronization programs to obtain a complete event description suitable for
experimental analyses. As an example an event generator for the process pp -->
Z + X at NLO is presented and interfaced consistently to the PYTHIA shower and
hadronization package.


title: Testing factorization

abstract:
  We briefly review the status of factorization in $b$-decays. We discuss
several experimental tests of its nature and stress their importance. We show
that decays into mesons which have small decay constants or spin greater than
one (`designer mesons') offer a variety of new opportunities.


title:
Search for the Lepton Flavour Violating Higgs decay H --> tau mu at
  Hadron Colliders

abstract:
  We study the prospects to detect at hadron colliders the Lepton Flavour
Violating Higgs decay H --> tau mu, which can reach substantial branching
fractions in several extensions of the SM. Among them, the generic two higgs
doublet model can be taken as a representative case where B.R.(H --> tau mu)
can reach values of order 10^-1-10^-2. Bounds on the LFV factor kappa_{tau mu}
of order 0.8-1.7 can be derived at 95% c.l. at Tevatron Run-2 with 4 fb^-1 for
m_H = 110-150 GeV.


title: Revisiting spin alignment of heavy mesons in its inclusive production

abstract:
  In the heavy quark limit inclusive production rate of a heavy meson can be
factorized, 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. For $D^{**}$ meson, our prediction suffers
a large correction, as indicated by experimental data. There exists another
approach by taking heavy mesons as bound systems, in which the total angular
momentum of the light degrees of freedom is 1/2 and 3/2 for spin-1 and spin-2
meson respectively, then the diagonal parts of spin density matrices can be
obtained. However, there are distinct differences in the predictions from the
two approaches and they are discussed in detail.


title: Naturalness Bounds on Dipole Moments from New Physics

abstract:
  Assuming naturalness that the quantum corrections to the mass should not
exceed the order of the observed mass, we derive and apply model-independent
bounds on the anomalous magnetic moments and electric dipole moments of leptons
and quarks due to new physics.


title: Expectation values of four-quark operators in pions

abstract:
  The values of four-quark operators averaged over pions are expressed through
those averaged over vacuum. The specific values are obtained in the framework
of the factorization assumption. For the condensates of the light quarks of the
same flavour \bar q\Gamma q\bar q\Gamma q the scalar condensate is shown to be
an order of magnitude larger than the other ones. The condensates containing
the strange quarks \bar q q\bar s s appear to be only about twice smaller than
those of the light quarks. The degeneracy of the ground state in the
Nambu--Jona--Lasinio model is shown explicitly.


title: Proton spin structure and the axial U(1) problem

abstract:
  We emphasise the relation between the spin structure of the proton and the
axial U(1) problem. New experiments motivated by the proton spin problem which
could shed light on the nature of U(1) symmetry breaking in QCD are discussed.


title: Non-adiabatic oscillations of supernova neutrinos

abstract:
  The level-crossing probability, local and global adiabaticity conditions are
discussed for 2-flavour neutrino oscillations in matter with arbitrary mixing
angle $\theta$. Different approximations for the survival probability of
supernova neutrinos are compared. Results of a combined likelihood analysis of
the observed SN1987A neutrino signal and of the latest solar neutrino data
including the recent SNO CC measurement are presented.


title:
Constraints on leptophobic gauge bosons with polarized neutrons and
  protons at RHIC

abstract:
  We explore the sensitivity and the physics interest of the measurement of
parity-violating spin asymmetries in one-jet production in the presence of a
new leptophobic neutral gauge boson Z', within polarized hadronic collisions at
the BNL RHIC. We focus on polarized neutron collisions which could be achieved
in a realistic upgrade of the RHIC-Spin program. We show that, in case of a
discovery, a compilation of the information coming from both polarized pp and
nn collisions should constrain the number of Higgs doublets and the presence or
absence of trilinear fermion mass terms in the underlying model of New Physics.


title: Hadronic Contribution to (g-2)_{mu}

abstract:
  The recent precise measurement of the muon magnetic anomaly (g-2)_{mu} at BNL
opens a window into possible new physics, provided the contribution from
hadronic vacuum polarization is well understood. This talk summarizes the
development in the evaluation of the leading order hadronic contributions.
Significant improvement has been achieved in a series of analyses which is
presented historically in three steps: (1), use of tau spectral functions in
addition to e+e- cross sections, (2), extended use of perturbative QCD and (3),
application of QCD sum rule techniques. The uncertainties, in particular
concerning the CVC hypothesis used in step (1), and global quark-hadron duality
employed in steps (2) and (3) are discussed. No new analysis results are given
in these proceedings.


title: Parton Saturation-An Overview

abstract:
  The idea of partons and the utility of using light-cone gauge in QCD are
introduced. Saturation of quark and gluon distributions are discussed using
simple models and in a more general context. The Golec-Biernat W\usthoff model
and some simple phenomenology are described. A simple, but realistic, equation
for unitary, the Kovchegov equation, is discussed, and an elementary derivation
of the JIMWLK equation is given.


title: Higgs-Boson Pole Masses in the MSSM with Explicit CP Violation

abstract:
  Extending previous results obtained in the effective-potential approach, we
derive analytic expressions for the pole masses of the charged and neutral
Higgs bosons in the minimal supersymmetric standard model (MSSM) with explicit
CP violation. In such a minimal supersymmetric model, the CP invariance of the
Higgs potential is explicitly broken by quantum effects dominated by
third-generation squarks at the one-loop level and by one-loop gluino- and
higgsino-mediated threshold corrections to the top- and bottom-quark Yukawa
couplings at the two-loop level. Field-theoretic issues arising in the
description of a two-level Higgs-boson system strongly mixed due to CP
violation are addressed. Numerical results for the pole masses of the
CP-violating Higgs bosons are presented, and comparisons are made with previous
results obtained in the effective-potential approach.


title: Flavour-Changing Neutral Currents and Leptophobic Z' Gauge Bosons

abstract:
  Leptophobic Z' gauge bosons can appear in models with an E_6 gauge symmetry.
We show that flavour-changing neutral currents can be generated in some of
these models due to the mixing of the ordinary d_R, s_R and b_R quark fields
with the exotic h_R. Because the Z' does not couple to charged leptons, the
constraints on the flavour-changing couplings U^{Z'}_{db} and U^{Z'}_{sb} are
relatively weak. Indeed, B_q--Bbar_q mixing (q=d,s) can be dominated by Z'
exchange, which will affect CP-violating rate asymmetries in B decays. Rare
hadronic B decays can also be affected, while decays involving charged leptons
will be unchanged.


title: Could One Find Petroleum Using Neutrino Oscillations in Matter?

abstract:
  In neutrino physics, it is now widely believed that neutrino oscillations are
influenced by the presence of matter, modifying the energy spectrum produced by
a neutrino beam traversing the Earth. Here, we will discuss the reverse
problem, i.e. what could be learned about the Earth's interior from a single
neutrino baseline energy spectrum, especially about the Earth's mantle. We will
use a statistical analysis with a low-energy neutrino beam under very
optimistic assumptions. At the end, we will note that it is hard to find
petroleum with such a method, though it is not too far away from technical
feasibility.


title: Hadron-Hadron Scattering in the Nonrelativistic Quark Model

abstract:
  In this HADRON2001 contribution we summarize the status of our quark-model
calculations of hadron-hadron scattering amplitudes in annihilation-free
channels. The predictions are in reasonably good agreement with experimentally
known S-wave meson-meson and meson-baryon phase shifts, and there are very
recent indications that S-wave pi-omega scattering (extracted from FSIs in b_1
decay) may also be similar to our predictions. Finally, novel applications of
this formalism to the dissociation cross sections of charmonia on light hadrons
(relevant for QGP studies at RHIC) are discussed.


title: Counting contact terms in $B\to V\gamma$ decays

abstract:
  We clarify the origin and cancellation of contact terms in the weak
annihilation amplitudes contributing to $B\to V \gamma$. It is demonstrated
that the photon emission from the final-state quarks vanishes in the chiral
limit of massless quarks. The contact terms in the QCD light-cone sum rule
evaluation of the weak annihilation amplitudes are also discussed.


title: Quarkonium Polarization in Lepton Annihilation

abstract:
  We investigate the polarization properties of vector quarkonia in lepton
anti-lepton annihilation with special attention to effects due to intermediate
Z bosons.


title: Nucleon Charge and Magnetization Densities

abstract:
  A Fourier-Bessel analysis is used to fit charge and magnetization densities
to data for the nucleon Sachs form factors. The neutron and proton
magnetization densities are very similar, but the proton charge density is
significantly softer. A useful measurement of the neutron charge density is
obtained, although the relative uncertainty in the interior will remain
substantially larger than for the other densities until precise new data at
higher Q^2 become available.


title: Control System of the Bepcii

abstract:
  Recently the Chinese Academy of Sciences has chosen BEPCII as the future
development of the BEPC, i.e. upgrade of both the machine and detector. The
luminosity of the machine is expected to increase to 1.0x1033cm-2s-1. The
project will be started at the beginning of 2002 and finished with in 3-4
years. The BEPC control system was built in 1987 and upgraded in 1994.
According to the design of the BEPCII, a double ring schema will be adopted and
a number of new devices will be added in the system. The existing control
system has to be upgraded. The BEPCII will be distributed architecture and
developed by EPICS. We are going to apply the standard hardware interfaces and
mature technologies in the system. A number of VME IOCs will be added in the
system and the feildbus, PLCs will be used as device control for some kind of
equipment. We will keep the existing system in use, such as CAMAC modules and
PC front-ends, and merge it into EPICS system. Recently the development of the
prototype is in progress. This paper will describe the system design and
development issues.


title:
Phenomenological analysis of experimental data on eta-photoproduction on
  protons

abstract:
  The results of linear regresion of differential cross sections, $\Sigma$- and
$T$-asymmetries of $\eta$-photoproduction on protons in energy region from
threshold up to 1 GeV are presented. Serious contradictions between angular
distributions measured in different laboratories are revealed. The energy
dependance of regression coefficients may be due to transition from energy
region of $S_{11}(1535)$ and $D_{13}(1520)$ to energy region of $D_{15}(1675)$
and $F_{15}(1680)$ resonances.


title: Model Independent Information On Solar Neutrino Oscillations

abstract:
  We present the results of a Bayesian analysis of solar neutrino data in terms
of nu_e->nu_{mu,tau} oscillations, independent from the Standard Solar Model
predictions for the solar neutrino fluxes. We show that such a model
independent analysis allows to constraint the values of the neutrino mixing
parameters in limited regions around the usual SMA, LMA, LOW and VO regions.
Furthermore, there is a strong indication in favor of large neutrino mixing and
large values of Delta m^2 (LMA region). We calculate also the allowed ranges of
the neutrino fluxes and we show that they are in good agreement with the
Standard Solar Model prediction. In particular, the ratio of the 8B flux with
its Standard Solar Model prediction is constrained in the interval [0.45,1.42]
with 99.73% probability. Finally, we show that the hypothesis of no neutrino
oscillations is strongly disfavored in a model independent way with respect to
the hypothesis of neutrino oscillations.


title: Numerical Evaluation of Two-Dimensional Harmonic Polylogarithms

abstract:
  The two-dimensional harmonic polylogarithms $\G(\vec{a}(z);y)$, a
generalization of the harmonic polylogarithms, themselves a generalization of
Nielsen's polylogarithms, appear in analytic calculations of multi-loop
radiative corrections in quantum field theory. We present an algorithm for the
numerical evaluation of two-dimensional harmonic polylogarithms, with the two
arguments $y,z$ varying in the triangle $0\le y \le 1$, $ 0\le z \le 1$, $\
0\le (y+z) \le 1$. This algorithm is implemented into a {\tt FORTRAN}
subroutine {\tt tdhpl} to compute two-dimensional harmonic polylogarithms up to
weight 4.


title:
The hadronic tau decay of a heavy charged Higgs in models with singlet
  neutrino in large extra dimensions

abstract:
  We study the LHC sensitivity to the charged Higgs discovery in the channel
H^- -> tau_L^- nu in models with a singlet neutrino in large extra dimensions.
The observation of such a signal would provide a distinctive evidence for these
models since in the standard two Higgs doublet model type II, H^- -> tau_L^- nu
is completely suppressed.


title: Fieldbus Device Drivers for Accelerator Control at DESY

abstract:
  In order to interface the DESY fieldbus adapter, SEDAC (SErial Data
Acquisition and Control system), a full duplex device driver was developed for
the Windows NT, Linux, VxWorks, and Solaris operating systems. Detailed driver
development issues as well as a common user interface will be presented, along
with a comparison of the device drivers among the different operating systems.
In particular, we shall present benchmark results concerning general
performance as well as ease of development.


title:
Precision Determination of the Muon $g_{\mu}-2$ and $\bar{\alpha}_{\rm
  Q.E.D.}(M^2_{Z})$

abstract:
  We present a summary of the results of two recent precise calculations of the
muon anomalous magnetic moment ($g_{\mu}-2$) and the electromagnetic coupling
on the $Z$ ($\bar{\alpha}_{\rm Q.E.D.}(M^2_{Z})$). The main sources of
uncertainty are underlined.


title:
Heavy Quark Production at the TESLA Collider and its Sensitivity to the
  Gluon Content in Photon

abstract:
  Heavy quark production is studied at the high energy linear e^+e^- collider
(LC) TESLA both in its nominal and Photon Collider (PC) mode. Leading order
cross-sections are calculated for the production of heavy quarks, e^+e^- ->
e^+e^- Q\bar{Q}X, at high transverse momenta. The sensitivity of this process
to the gluon content in the photon is studied.


title: On helicity and spin on the light cone

abstract:
  Starting from a one-body front-form equation with Lepage-Brodsky spinors we
show, with a fair amount of new technology, how an integral equation in
standard momentum space with Bjorken-Drell spinors can be obtained. The
integral equation decouples for singlets and triplets.


title: Strangeness enhancement and Energy dependence in Heavy Ion Collisions

abstract:
  The canonical statistical model analysis of strange and multistrange hadron
production in central A-A relative to p-p/p-A collisions is presented over the
energy range from $\sqrt s=8.73$ GeV up to $\sqrt s =130$ GeV. It is shown that
the relative enhancement of strange particle yields from p-p/p-A to A-A
collisions substantially increases with decreasing collision energy. It is
largest at $\sqrt s= 8.7$ GeV, where the enhancement of $\Omega,\Xi$ and
$\Lambda$ is of the order of 100, 20 and 3, respectively. In terms of the model
these results are due to the canonical suppression of particle thermal phase
space at lower energies, which increases with the strangeness content of the
particle and with decreasing size of the collision fireball. The comparison of
the model with existing data on energy dependence of the kaon/pion ratio is
also discussed.


title: epsilon'/eps in the Standard Model

abstract:
  We overview the detailed analysis of epsilon'/epsilon within the Standard
Model, presented in ref. 1. When all sources of large logarithms are
considered, both at short and long distances, it is possible to perform a
reliable Standard Model estimate of epsilon'/epsilon. The strong S-wave
rescattering of the final pions has an important impact on this observable. The
Standard Model prediction is found to be Re(epsilon'/epsilon) =(1.7 +-
0.9)*10^{-3}, in good agreement with the most recent experimental measurements.
A better estimate of the strange quark mass would reduce the uncertainty to
about 30%.


title: Quark and Lepton Mass Patterns and the Absolute Neutrino Mass Scale

abstract:
  We investigate what could be learned about the absolute scale of neutrino
masses from comparisons among the patterns within quark and lepton mass
hierarchies. First, we observe that the existing information on neutrino masses
fits quite well to the unexplained, but apparently present regularities in the
quark and charged lepton sectors. Second, we discuss several possible mass
patterns, pointing out that this quite generally leads towards hierarchical
neutrino mass patterns especially disfavoring the vacuum solution.


title: Soft Photon Spectrum in Orthopositronium and Vector Quarkonium Decays

abstract:
  QED gauge invariance, when combined with analyticity, leads to constraints on
the low energy end of the emitted photon spectra. This is known as Low's
theorem. It is shown that the Ore-Powell result, as well as further
developments for the orthopositronium differential decay rate, are in
contradiction with Low's theorem, i.e. that their predicted soft photon spectra
are incorrect.
  A solution to this problem is presented. The implications for the
orthopositronium lifetime puzzle, the charmonium rho-pi puzzle, the prompt
photon spectrum in inclusive quarkonium decays and the extraction of alpha_S
from quarkonium annihilation rates are briefly commented.


title: Matter & More in Nuclear Collisions

abstract:
  The aim of high energy nuclear collisions is to study the transition from
hadronic matter to a plasma of deconfined quarks and gluons. I review the basic
questions of this search and summarize recent theoretical developments in the
field.


title: Using Bs(t) -> phi K_s to measure Sin 2 beta

abstract:
  In this talk we show that, unlike other pure $b\to d$ penguin processes, the
decay $\bs(t)\to\phi\ks$ is dominated by a single amplitude, that of the
internal $t$-quark. Thus, the indirect CP asymmetry in this decay probes $\sin
2\beta$. This cancellation holds for most part of the parameter space and error
on $\sin 2\beta$ is less than 10%. By measuring the direct CP asymmetry, one
can get a better idea of the probable error on $\sin 2\beta$.


title: A New Evaluation of Polarized Parton Densities in the Nucleon

abstract:
  We present a new leading and next-to-leading QCD analysis of the world data
on inclusive polarized deep inelastic scattering. A new set of polarized parton
densities is extracted from the data and the sensitivity of the results to the
newly incorporated SLAC/E155 proton data is discussed.


title:
Cosmological magnetic fields induced by metric perturbations after
  inflation

abstract:
  We consider the amplification of electromagnetic quantum vacuum fluctuations
induced by the presence of metric perturbations at the end of inflation. We
obtain the amplitude of the corresponding magnetic fields on super-Hubble
scales and compare it with the requirements of the galactic dynamo mechanism
for different values of the spectral index. Finally we discuss the possible
effects of the dissipation of such fields in the form of gravitational waves.


title: Lower Bound on |U_{e3}|^2 from Single and Double Beta Decay Experiments

abstract:
  We point out under the assumption of Majorana neutrinos that a lower bound on
the MNS matrix element |U_{e3}|^2 can be derived by using constraint imposed by
neutrinoless double beta decay experiments and by positive detection of
neutrino mass by single beta decay experiments. We show that the lower bound
exists in a narrow region of the ratio of the observables in these two
experiments, <m>_{\beta \beta}/<m>_{\beta}. It means that once the neutrino
mass is detected in the bound-sensitive region one must soon observe signal in
neutrinoless double beta decay experiments.


title: The Chiral Odd Nucleon Tensor Charge

abstract:
  Exploiting the phenomenological symmetry of the $J^{PC}=1^{+-}$ light axial
vector mesons and using pole dominance, we calculate the flavor contributions
to the nucleon tensor charge.


title: The A Dependence of Open Charm and Bottom Production

abstract:
  We study inclusive heavy quark and exclusive heavy quark pair production in
pp, pA and AA interactions. Intrinsic transverse momentum is introduced in pp
interactions. Nuclear effects, limited to $k_T$ broadening and nuclear
shadowing, are introduced in pA and AA interactions. The nuclear dependence is
studied over a range of energies, both in fixed target and collider setups.


title: Updating V_us from kaon semileptonic decays

abstract:
  We update the determination of |V_us| using semielectronic and semimuonic
decays of K mesons. A modest improvement of 15% with respect to its present
value is obtained for the error bar of this matrix element when we combine the
four available semileptonic decays. The combined effects of long-distance
radiative corrections and nonlinear terms in the vector form factors can
decrease the value of |V_us| by up to 1%. Refined measurements of the decay
widths and slope form factors in the semimuonic modes and a more accurate
calculation of vector form factors at zero momentum transfer can push the
determination of |V_us| at a few of percent level.


title:
Reply to Comment on Infrared Fixed Point Structure in the Minimal
  Supersymmetric Standard Model with Baryon and Lepton Number Violation

abstract:
  Infrared fixed points in the minimal supersymmetric standard model with
baryon and lepton number violation were studied and their structure elucidated
by us in Physical Review D 63 076008 (2001). Here we reply to a comment on this
paper. We emphasize that our paper concentrates on the case of the only true
infrared fixed point in the model, i.e. the stable nontrivial fixed point for
the top- and bottom-quark Yukawa couplings and the baryon number violating
coupling. For this case the comment does not affect in any manner the numerical
results and conclusions derived in our paper.


title: Particle Physics-Future Directions

abstract:
  Wonderful opportunities await particle physics over the next decade, with the
coming of the Large Hadron Collider at CERN to explore the 1-TeV scale
(extending efforts at LEP and the Tevatron to unravel the nature of electroweak
symmetry breaking) and many initiatives to develop our understanding of the
problem of identity: what makes a neutrino a neutrino and a top quark a top
quark. Here I have in mind the work of the B factories and the Tevatron
collider on CP violation and the weak interactions of the b quark; the
wonderfully sensitive experiments at Brookhaven, CERN, Fermilab, and Frascati
on CP violation and rare decays of kaons; the prospect of definitive
accelerator experiments on neutrino oscillations and the nature of the
neutrinos; and a host of new experiments on the sensitivity frontier. We might
even learn to read experiment for clues about the dimensionality of spacetime.
If we are inventive enough, we may be able to follow this rich menu with the
physics opportunities offered by a linear collider and a (muon storage ring)
neutrino factory. I expect a remarkable flowering of experimental particle
physics, and of theoretical physics that engages with experiment. I describe
some of the great questions before us and the challenges of providing the
instruments that will be needed to define them more fully and-eventually-to
answer them.


title:
N-Point Vertex Functions, Ward-Takahashi Identities and Dyson-Schwinger
  Equations in Thermal QCD/QED in the Real Time Hard-Thermal-Loop Approximation

abstract:
  In this paper we calculated the n-point hard-thermal-loop (HTL) vertex
functions in QCD/QED for n= 2, 3 and 4 in the physical representation in the
real time formalism (RTF). The result showed that the n-point HTL vertex
functions can be classified into two groups, a) those with odd numbers of
external retarded indices, and b) the others with even numbers of external
retarded indices. The n-point HTL vertex functions with one retarded index,
which obviously belong to the first group a), are nothing but the HTL vertex
functions that appear in the imaginary time formalism (ITF), and vise versa.
All the HTL vertex functions belonging to the first group a) are of $O(g^2T^2)$
, and satisfy among them the simple QED-type Ward-Takahashi identities, as in
the ITF. Those vertex functions belonging to the second group b) never appear
in the ITF, namely their existence is characteristic of the RTF, and their
HTL's have the high temperature behavior of $O(g^2T^3)$, one-power of T higher
than usual. Despite this difference we could verify that those HTL vertex
functions belonging to the second group b) also satisfy among themselves the
QED-type Ward-Takahashi identities, thus guaranteeing the gauge invariance of
the HTL's in the real time thermal QCD/QED.


title: Studying the Higgs Potential at the e+e- Linear Collider

abstract:
  The determination of the shape of the Higgs potential is needed to complete
the investigation of the Higgs profile and to obtain a direct experimental
proof of the mechanism of electro-weak symmetry breaking. This can be achieved,
at a linear collider, by determining the Higgs triple self-coupling g_HHH in
the processes e+e--> HHZ and HHnunu and, possibly, the quartic coupling. This
paper summarises the results of a study of the expected accuracies on the
determination of g_HHH at a TeV-class LC and at a multi-TeV LC. The statistical
dilution arising from contributions not sensitive to the triple Higgs vertex,
can be reduced by means of variables sensitive to the kinematics and the spin
properties of the reactions.


title: Variational approach to dynamics of quantum fields

abstract:
  Lectures deliverd at the NATO Advanced Study Institute on QCD Perspectives on
Hot and Dense Matter, Cargese, Aug. 6 - 18, 2001. Dedicated to the memory of
Dominique Vautherin.


title: Eta decays involving photons

abstract:
  The decays of the eta meson are reviewed in the framework of Chiral
Perturbation Theory. Particular attention is devoted to the electromagnetic
channels involving photons, either in the final or intermediate states.


title:
A simple model to explain narrow nucleon resonances below the \pi N
  threshold

abstract:
  Several experiments suggest the existence of narrow excited states in the
nucleon below the \pi N threshold. Taking all information together a series of
states emerges at masses of 940, 966, 985, 1003, m_4, 1044, m_6, 1094 MeV above
the nucleon ground state at 940 MeV with m_4 and m_6 missing. A model based on
the excitation of collective states of the quark condensate is proposed
explaining these states as multiple production of a ``genuine'' Goldstone Boson
with a mass of \approx 20 MeV. The model also accounts in a natural way for the
non-observation of m_4 and m_6. It suggests an explanation of the mass gap
problem of the hadronic spectrum and a confinement mechanism.


title:
Heavy quark polarizations of $e^+e^-\to q \bar q h$ in the general two
  Higgs doublet model

abstract:
  The polarizations of the heavy quark ($q=t$ or $b$) in the process $e^+e^-
\to q \bar q h$ have been calculated in the general two Higgs doublet model.
The CP violating normal polarization of the top quark can reach 8%, and $2 \sim
3%$ for the bottom quark, while it is zero in the standard model. The
longitudinal and transverse polarizations of the bottom quark can be
significantly different from those in SM and consequently could aslo be used as
the probe of the new physics.


title: On the Mixed Propagator Approach to $\rho -\omega$ Mixing

abstract:
  Mixed Propagator (MP) approach to $\rho-\omega$ mixing is discussed. It is
found that under the pole-approximation assumption the results of MP approach
is not compatible both with the effective Lagrangian theory and with the
experiment measurement criterion. To overcome these inconsistent, we propose a
new MP approach in which the physical states of $\rho$ and $\omega$ are
determined by the requirement of experimental measurement to meson resonance.
In terms of this new MP approach, the EM pion form factor $F_\pi$ and form
factors of $\rho^0 \to \pi^0 \gamma$ and of $\omega \to \pi^0 \gamma$ are
derived. The results of $F_\pi$ are in good agreement with data. The form
factor of $\rho^0 \to \pi^0 \gamma$ exhibits a hidden charge-asymmetry
enhancement effect which agree with the prediction of the effective Lagrangian
theory.


title:
Equivalence Principle tests, Equivalence theorems and New long-range
  forces

abstract:
  We discuss the possible existence of new long-range forces mediated by spin-1
or spin-0 particles. By adding their effects to those of gravity, they could
lead to apparent violations of the Equivalence Principle. While the vector part
in the couplings of a new spin-1 U boson involves, in general, a combination of
the B and L currents, there may also be, in addition, an axial part as well. If
the new force has a finite range \lambda, its intensity is proportional to
1/(\lambda^2 F^2), F being the extra U(1) symmetry-breaking scale.
  Quite surprisingly, particle physics experiments can provide constraints on
such a new force, even if it is extremely weak, the corresponding gauge
coupling being extremely small (<< 10^-19 !). An ``equivalence theorem'' shows
that a very light spin-1 U boson does not in general decouple even when its
gauge coupling vanishes, but behaves as a quasimassless spin-0 particle, having
pseudoscalar couplings proportional to 1/F. Similarly, in supersymmetric
theories, a very light spin-3/2 gravitino might be detectable as a quasi
massless spin-1/2 goldstino, despite the extreme smallness of Newton's
gravitational constant G_N, provided the supersymmetry-breaking scale is not
too large.
  Searches for such U bosons in \psi and \Upsilon decays restrict F to be
larger than the electroweak scale (the U actually becoming, as an axion, quasi
``invisible'' in particle physics for sufficiently large F). This provides
strong constraints on the corresponding new force and its associated EP
violations. We also discuss briefly new spin-dependent forces.


title:
On the Experimental Effects of the Off-shell Structure in Anomalous
  Neutral Triple Gauge Vertices

abstract:
  We discuss differences between on-shell and off-shell treatments in the
search for anomalous neutral triple gauge couplings in $\mathrm{e^+ e^-}$
collisions. We find that the usual on-shell framework represents an optimal
starting point, covering all scenarios in which a reasonable experimental
sensitivity is expected. We show that off-shell effects lead to negligible
deviations at the experimental level, provided that $\mathrm{e^+
e^-}\to\mathrm{f}\bar{\mathrm{f}}\gamma$ and $\mathrm{e^+ e^-}\to\mathr
performed in regions where
$\mathrm{Z}^*\to\mathrm{f}\bar{\mathrm{f}},\mathrm{f^\prime}\math production is
dominant. For consistency reasons, we advocate the use of a natural extension
of the on-shell definitions, which takes into account the correct off-shell
dependences. Contrary to what has been recently suggested in the literature, we
find that no $SU(2)_L\times U(1)_Y$ constraints among neutral triple gauge
couplings can be imposed in a general case.


title: Breit Hamiltonian and QED Effects for Spinless Particles

abstract:
  We describe a simplified derivation for the relativistic corrections of order
$\alpha^4$ for a bound system consisting of two spinless particles. We devote
special attention to pionium, the bound system of two oppositely charged pions.
The leading quantum electrodynamic (QED) correction to the energy levels is of
the order of $\alpha^3$ and due to electronic vacuum polarization. We analyze
further corrections due to the self-energy of the pions, and due to recoil
effects, and we give a complete result for the scalar-QED leading logarithmic
corrections which are due to virtual loops involving only the scalar
constituent particles (the pions); these corrections are of order $\alpha^5 \ln
\alpha$ for S states.


title:
Production of singlino dominated neutralinos in extended supersymmetric
  models

abstract:
  Neutralinos with a large singlino component may appear in extended
supersymmetric models with additional singlet Higgs fields. Since singlinos do
not couple to (s)fermions and gauge bosons, the cross sections for the
production of singlino dominated neutralinos are generally small. Within the
framework of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and an
E_6 inspired model we study neutralino production e^+ e^- --> neutralino_1
neutralino_2 (neutralino_1,2 neutralino_3) with a singlino dominated
neutralino_2 (neutralino_3). It is shown that neutralinos with a singlino
contribution up to 99 % can be produced with a cross section larger than 1 fb
and may therefore be detected at a high luminosity e^+ e^- linear collider even
if they are not the LSP.


title: Correlations between <pT> and jet multiplicities from the BFKL chain

abstract:
  Strong correlations between the number of emitted jets and their average
transverse momentum are found for the events resulting from the exchange of a
single BFKL pomeron. transverse momentum are found for the events resulting
from the exchange.


title:
Gluon fusion production of the Higgs boson in a Calculable Model with
  one Extra Dimension

abstract:
  In an extension of the Standard Model with one extra dimension and N=1
supersymmetry compactified on R^1/(Z_2 x Z'_2), we compute the Higgs boson
decay width into two gluons, relevant to Higgs production in hadronic
collisions. At one loop, the decay width is significantly suppressed with
respect to the SM. For a compactification radius 1/R = 370 \pm 70 GeV and a
Higgs mass m_H = 127 \pm 8 GeV, as expected in the case of a radiatively
generated Fayet-Iliopoulos term, we find it to be less than 15% of the SM
result.


title:
Muon anomalous magnetic moment in a Calculable Model with one Extra
  Dimension

abstract:
  In the framework of a recently proposed extension of the Standard Model, with
N=1 SuperSymmetry in 5 dimensions, compactified on R^1/(Z_2 x Z'_2), we compute
the muon anomalous magnetic moment at one loop to order (M_W R)^2, where R is
the compactification radius. We find the corrections to be small with respect
to the SM pure weak contribution and not capable of explaining the present
discrepancy between theory and experiment for any sensible value of R.


title: Upward and Horizontal Tau Airshowers by UHE Neutrinos

abstract:
  Upward and Horizontal Tau Air-showers (UPTAUS and HORTAUS) emerging from the
Earth crust, mountain chains or deep plate boundaries are the most powerful
signals of Ultra High Energy UHE anti neutrinos electron at PeV and neutrino
and anti-neutrino tau at energies near and above 10^15-10^19 eV. The large tau
Air-showers multiplicity N in secondaries N_opt =10^12 E_tau/ PeV, N_gamma=
10^8 E_tau/PeV, N_{e^- e^+}= 2 10^7 E_tau/PeV, N_mu = 3 10^5 E_tau/PeV^{0.85},
make easy their discover. UHE nu_tau, nu_tau because neutrino flavor mixing,
nu_mu <--> nu_tau, should be as abundant as nu_mu, bar-nu_mu. Also bar{nu}_e,
near the Glashow W resonance peak, E_bar{nu_e}= M^2_W / 2m_e = 6.3 10^{15} eV,
may generate tau Air-showers. The HORTAUS may test the UHE neutrino
interactions leading to additional fine-tuned test of New TeV Physics in
Mountain Valleys and Earth crust horizontal edges. UPTAUS or HORTAUS, beaming
toward high mountains, air-planes, ballons and satellites should flash gamma,
muon, X and Cherenkov lights toward detectors. Such UPTAUS might already hit
nearby satellite GRO gamma detectors flashing it by short (millisecond), hard,
diluted gamma-burst at the edge of BATSE threshold. We claimed their identity
with the observed BATSE 78 Terrestrial Gamma Flashes (TGF). The TGF clustering
toward Galactic Center and Plane, known AGNs source strongly support their UHE
Tau neutrino origin.


title: Constraints On Radiative Neutrino Mass Models From Oscillation Data

abstract:
  The three neutrino Zee model and its extension including three active and one
sterile species are studied in the light of new neutrino oscillation data. We
obtain analytical relations for the mixing angle in solar oscillations in terms
of neutrino mass squared differences. For the four neutrino case, we obtain the
result $\mathsf{sin^2 2 \theta_\odot \approx 1 - [ (\Delta m^2_{Atm})^2/(4
\Delta m^2_{LSND} \Delta m^2_\odot) ]^2}$, which can accommodate both the large
and small mixing scenarios. We show that within this framework, while both the
SMA-MSW and the LMA-MSW solutions can easily be accommodated, it would be
difficult to reconcile the LOW-QVO solutions. We also comment on the
active-sterile admixture within phenomenologically viable textures.


title: CompHEP Package with Light Gravitino and Sgoldstinos

abstract:
  We present a complete description of a new physical model with goldstino
supermultiplet for CompHEP software package. The model contains MSSM content
supplemented by three new fields: {\it goldstino} -- two component spinor,
scalar {\it sgoldstino} and pseudoscalar {\it sgoldstino}. To the leading order
in 1/F, where F is the parameter of supersymmetry breaking, and to zero order
in MSSM gauge and Yukawa coupling constants, the interactions between the
component fields of goldstino supermultiplet and MSSM fields are derived. They
correspond to the most attractive for collider studies processes where only one
of these {\it new} particles appears in a final state. In this case light
gravitino behaves exactly as goldstino. For sgoldstinos, as they are R-even, we
include in the package only sgoldstino couplings to goldstino and sgoldstino
couplings to SM fields as the most interesting phenomenologically. All new
coupling constants between the components of goldstino supermultiplet and MSSM
fields are completely determined by the ratios of soft supersymmetry breaking
parameters and F. Thus, in addition to the MSSM coupling constants there are
three new parameters in the package: the scale of supersymmetry breaking,
$\sqrt{F}$, and masses of scalar and pseudoscalar sgoldstinos. The CompHEP
notations for the new fields and parameters are presented. The package was
successfully tested and all relevant results known in literature have been
reproduced with good accuracy. It may be used in order to calculate any
tree-level process with one gravitino or sgoldstino on mass shell. Universality
of the Lagrangian allows to apply the package in study of phenomenology of any
supersymmetric extension of the Standard Model.


title: Quintessence Unification Models from Non-Abelian Gauge Dynamics

abstract:
  We show that the condensates of a non-abelian gauge group, unified with the
standard model gauge groups, can parameterize the present day cosmological
constant and play the role of quintessence. The models agree with SN1a and
recent CMB analysis.
  These models have {\it no free} parameters. Even the initial energy density
at the unification scale and at the condensation scale are fixed by the number
of degrees of freedom of the gauge group (i.e. by $N_c, N_f$). The values of
$N_c, N_f$ are determined by imposing gauge coupling unification and the number
of models is quite limited. Using Affleck-Dine-Seiberg superpotential one
obtains a scalar potential $V=\Lm_c^{4+n}\phi^{-n}$. Models with $2<n<4.27$ or
equivalently $2\times 10^{-2} GeV < \Lm_c < 6 \times 10^3 GeV$ do not satisfy
the unification constrain. In fact, there are only three models and they have
an inverse power potential with $6/11 \leq n \leq 2/3$. Imposing primordial
nucleosynthesis bounds the preferred model has $N_c=3, N_f=6$, with $n=2/3$, a
condensation scale $\Lm_c=4.2\times 10^{-8} GeV$ and $\wpo=-0.90$ with an
average value $\weff=-0.93$. Notice that the tracker solution is not a good
approximation since it has $w_{tr}=-\fr{2}{n+2}=-0.75$ for $n=2/3$.
  We study the evolution of all fields from the unification scale and we
calculate the relevant cosmological quantities. We also discuss the
supersymmetry breaking mechanism which is relevant for these models.


title: Infrared behaviour of the pressure in g\phi^3 theory in 6 dimensions

abstract:
  In an earlier paper Almeida and Frenkel considered the calculation of the
pressure in g\phi^3 theory in 6 dimensions via the Schwinger--Dyson equation.
They found, under certain approximations, that a finite result ensues in the
infrared limit. We find this conclusion to remain true with certain variations
of these approximations, suggesting the finiteness of the result to be fairly
robust.


title: Supersymmetric Dark Matter Detection at Post-LEP Benchmark Points

abstract:
  We review the prospects for discovering supersymmetric dark matter in a
recently proposed set of post-LEP supersymmetric benchmark scenarios. We
consider direct detection through spin-independent nuclear scattering, as well
as indirect detection through relic annihilations to neutrinos, photons, and
positrons. We find that several of the benchmark scenarios offer good prospects
for direct detection through spin-independent nuclear scattering, as well as
indirect detection through muons produced by neutrinos from relic annihilations
in the Sun, and photons from annihilations in the galactic center.


title: Particle and Astroparticle Searches for Supersymmetry

abstract:
  Supersymmetry may be discovered at high energy colliders, through low energy
precision measurements, and by dark matter searches. We present a comprehensive
analysis of all available probes in minimal supergravity. This work extends
previous analyses by including the focus point branch of parameter space and
the full array of promising indirect dark matter searches. We find that
particle and astrophysical searches underway are highly complementary: each
separately provides only partial coverage of the available parameter space, but
together they probe almost all models. Cosmology does {\em not} provide upper
bounds on superpartner masses useful for future colliders. At the same time, in
the cosmologically preferred region, if supersymmetry is to be observable at a
500 GeV linear collider, some signature of supersymmetry must appear {\em
before} the LHC.


title:
Charm-Anticharm Asymmetries in Photoproduction from Heavy-Quark
  Recombination

abstract:
  The asymmetries between charm and anticharm mesons observed in fixed-target
photoproduction experiments are an order of magnitude larger than the
asymmetries predicted by conventional perturbative QCD. We show that these
charm meson asymmetries can be explained by a heavy-quark recombination
mechanism for heavy meson production. In this process, a charm quark combines
with a light antiquark from the hard-scattering process and they subsequently
hadronize into a state including the charm meson. This recombination mechanism
can be calculated within perturbative QCD up to some nonperturbative constants.
After using symmetries of QCD to reduce the number of free parameters to two,
we obtain a good fit to all the data on the asymmetries for charmed mesons from
the E687 and E691 experiments.


title:
The process $e^{+}e^{-}\to \bar{t}c$ in topcolor-assisted technicolor
  models

abstract:
  We consider the flavor changing neutral current(FCNC) process
$e^{+}e^{-}\to\bar{t}c$(or $t\bar{c}$) in the context of topcolor-assisted
technicolor(TC2) models. We find that the contributions of charged scalars
(technipions and top-pions) and topcolor gauge bosons are negligibly small. The
neutral scalars (top-pion $\pi_{t}^{0}$ and top-Higgs $h_{t}^{0}$) can give
significant contributions to this process. With reasonable values of the
parameters in TC2 models, there will be several tens of the observable
$\bar{t}c$ events to be generated in the future $e^{+}e^{-}$ linear colliders.


title: Alternative Signature of TeV Strings

abstract:
  In string theory, it is well known that any hard scattering amplitude
inevitably suffers exponential suppression. We demonstrate that, if the string
scale is M_s < 2TeV, this intrinsically stringy behavior leads to a dramatic
reduction in the QCD jet production rate with very high transverse momenta p_T
> 2TeV at LHC. This suppression is sufficient to be observed in the first year
of low-luminosity running. Our prediction is based on the universal behavior of
string theory, and therefore is qualitatively model-independent. This signature
is alternative and complementary to conventional ones such as Regge resonance
(or string ball/black hole) production.


title:
Possible astrophysical signatures of heavy stable neutral relics in
  supergravity models

abstract:
  We consider heavy stable neutral particles in the context of supergravity and
show that a gravitationally suppressed inflaton decay can produce such
particles in cosmologically interesting abundances within a wide mass range
$10^3 {\rm GeV} \leq m_X \leq 10^{11} {\rm GeV}$. In gravity-mediated
supersymmetry breaking models, a heavy particle can decay into its superpartner
and a photon-photino pair or a gravitino. Such decays only change the identity
of a possible dark matter candidate. However, for $10^3 {\rm GeV} \leq m_X \leq
10^7 {\rm GeV}$, astrophysical bounds from gamma-ray background and
photodissociation of light elements can be more stringent than the overclosure
bound, thus ruling out the particle as a dark matter candidate.


title: Why extra gauge Bosons should exist and how to hunt them

abstract:
  Werner Heisenberg's work is the foundation for many topics of present
research. This is also true for the search for extra gauge bosons. The
prospects of future colliders in this search are shortly mentioned.


title: Kaons and pions in strange quark matter

abstract:
  The behavior of kaons and pions in strange quark matter in weak equilibrium,
is investigated within the SU(3) Nambu-Jona-Lasinio [NJL] model. This work
focuses a region of high densities where the behavior of mesons has not been
explored in the framework of this model. It is found that above the density
where strange valence quarks appear in the medium, $\rho = 3.8 \rho_0$, a
change of behavior of different observables is observed indicating a tendency
to the restoration of flavor symmetry. In particular, the splitting between
charge multiplets, $K^+, K^-; K^0, {\bar K^0} {and} \pi^+, \pi^-$ decrease and
the low energy modes with quantum numbers of $K^-, \bar K^0 {and} \pi^+$, which
are excitations of the Fermi sea, are less relevant than for lower densities.


title: Putting non Point-like Behavior of Fundamental Particles to Test

abstract:
  We review the experimental limits on those hypothetical interactions where
the fundamental particles could exhibit non point-like behavior. In particular
we have focused on the QED reaction measuring the differential cross sections
for the process $ \EEGG $ at energies around 91 GeV and 209 GeV with data
collected from the L3 detector from 1991 to 2001. With a global fit L3 set
lower limits at $ 95 % $ CL on a contact interaction energy scale parameter
$\Lambda > 1.6 $ TeV, which restricts the characteristic QED size of the
interaction region to $ R_{e} < 1.2 \times 10^{-17} $ cm. All the interaction
regions are found to be smaller than the Compton wavelength of the fundamental
particles. This constraint we use to estimate a lower limit on the internal
density of particle-like structure with the de Sitter vacuum core. Some
applications of obtained limits to the string and quantum gravity scales are
also discussed.


title: One-loop corrections to neutral Higgs boson decays into neutralinos

abstract:
  We present the one-loop corrected decay widths for the decays of the neutral
Higgs bosons h^0, H^0, and A^0 into a neutralino pair neu_m neu_n (m, n = 1,
>..., 4) and to the decay neu_m -> (h^0, H^0, A^0) + neu_n. The corrections
contain the one-loop contributions of all fermions and sfermions. All
parameters are taken on-shell. This requires a proper treatment of the
neutralino mass and mixing matrix. The dependence on the SUSY parameters is
discussed. The corrections can be large in certain regions of the parameter
space.


title:
Nonthermal production of gravitinos and inflatinos in the Inflationary
  Universe

abstract:
  The success of primordial nucleosynthesis imposes stringent bounds on the
abundance of gravitational relics. This is particularly true for gravitinos,
which - for models with gravitationally mediated supersymmetry breaking - are
expected to have a mass below the TeV scale and thus to decay only after
nucleosynthesis has concluded. We discuss the nonthermal production of
gravitinos in models with several chiral fields, to be able to distinguish the
mechanisms of supersymmetry breaking and inflation. Our explicit calculations
show that the superpartner of the inflaton can be significantly generated.
Gravitinos can be produced both at the preheating stage and at the subsequent
inflaton/inflatino decay. We verify that this production is well below the
nucleosynthesis bound, provided the sector responsible for the present
supersymmetry breakdown is weakly (for example, only gravitationally) coupled
to the one which drove inflation.