title: Unification of Weak and Hypercharge Interactions at the TeV Scale

abstract:
  A realistic SU(3)_C x SU(3)_W unified theory is constructed with a TeV sized
extra dimension compactified on the orbifold S_1/Z_2, leaving only the standard
model gauge group SU(3)_C x SU(2)_L x U(1)_Y unbroken in the low energy 4D
theory. The Higgs doublets are zero modes of bulk SU(3)_W triplets and serve to
normalize the hypercharge generator, apparently giving a tree-level prediction
for the weak mixing angle: \sin^2\theta = 1/4. The orbifold boundary conditions
imply a restricted set of SU(3)_W gauge transformations: at an orbifold fixed
point only the transformations of SU(2)_L x U(1)_Y are operative. This allows
quarks to be located at this fixed point, overcoming the longstanding problem
of how to incorporate matter in a unified SU(3)_W theory. However, in general
this local, explicit breaking of SU(3)_W symmetry, necessary for including
quarks into the theory, destroys the tree-level prediction for the weak mixing
angle. This apparent contradiction is reconciled by making the volume of the
extra dimension large, diluting the effects of the local SU(3)_W violation. In
the case that the electroweak theory is strongly coupled at the cutoff scale of
the effective theory, radiative corrections to the weak mixing angle can be
reliably computed, and used to predict the scale of compactification: 1 - 2 TeV
without supersymmetry, and in the region of 3 - 6 TeV for a supersymmetric
theory. The experimental signature of electroweak unification into SU(3)_W is a
set of ``weak partners'' of mass 1/2R, which are all electrically charged and
are expected to be accessible at LHC. These include weak doublets of gauge
particles of electric charge (++,+), and a charged scalar. When pair produced,
they yield events containing multiple charged leptons, missing large transverse
energy and possibly Higgs and electroweak gauge bosons.


title: Compressible bag model and the phase structure

abstract:
  The phase structure of hadrons and quark-gluon plasma is investigated by two
types of equation of hadron state, namely ideal hadron gas model and the
compressible bag model. It is pointed out that, while the ideal gas model
produces unrealistic extra hadron phase, the compressible bag model gives an
expected and reasonable phase diagram even if rich hadron spectrum is taken
into account.


title:
Complete electroweak one-loop radiative corrections to top-pair
  production at TESLA -- a comparison

abstract:
  Electroweak one-loop radiative corrections to the process e^+ e^- -> t tbar
are revisited. Two groups from Karlsruhe and Bielefeld/Zeuthen performed
independent calculations of both (virtual and soft) QED contributions and weak
virtual corrections. For the angular distribution an agreement of at least
eight digits for the weak corrections and of at least seven digits for
additional photonic corrections is established.


title: Constraining Supersymmetry

abstract:
  We review constraints on the minimal supersymmetric extension of the Standard
Model (MSSM) coming from direct searches at accelerators such as LEP, indirect
measurements such as b -> s gamma decay and the anomalous magnetic moment of
the muon. The recently corrected sign of pole light-by-light scattering
contributions to the latter is taken into account. We combine these constraints
with those due to the cosmological density of stable supersymmetric relic
particles. The possible indications on the supersymmetric mass scale provided
by fine-tuning arguments are reviewed critically. We discuss briefly the
prospects for future accelerator searches for supersymmetry.


title: Neutralino spectrum in top-down models of UHECR

abstract:
  We calculate the cosmic ray spectrum of ultra high energy neutralinos that
one should expect provided that the observed ultra high energy cosmic rays are
produced by the decay of superheavy particles X, M_X>10^{12} GeV, in
supersymmetric models. Our calculation uses an extended DGLAP formalism.
Forthcoming cosmic ray observatories should be able to detect these
neutralinos.


title:
Further study of the E+ E- --> F anti-F process with the aid of CalcPHEP
  system

abstract:
  In this paper we complete a description of calculation of the one-loop
amplitude for e+e- -->f fbar process started in CERN-TH/2001-308. This study is
performed within the framework of the project CalcPHEP. Here we add QED subsets
of the one-loop diagrams and the soft-photon contribution. The formulae we
derived are realized in two independent FORTRAN codes,eeffLib, which was
written in an old fashioned way, i.e. manually, and another one, created
automatically with an aid of s2n_f (symbols to numbers) software -- a part of
CalcPHEP system. We present a comprehensive comparison between the two our
codes as well as with the results existing in the world literature.


title: Neutrino spin evolution in presence of general external fields

abstract:
  The derivation of the quasiclassical Lorentz invariant neutrino spin
evolution equation taking into account general types of neutrino non-derivative
interactions with external fields is presented. We discuss the constraints on
the characteristics of matter and neutrino under which this quasiclassical
approach is valid. The application of the obtained equation for the case of the
Standard Model neutrino interactions with moving and polarized background
matter is considered.


title: New contributions to heavy quark sum rules

abstract:
  We analyse new contributions to the theoretical input in heavy quark sum
rules and we show that the general theory of singularities of perturbation
theory amplitudes yields the method to handle these specific features. In
particular we study the inclusion of heavy quark radiation by light quarks at
O(alpha_s^2) and non-symmetric correlators at O(alpha_s^3). Closely related, we
also propose a solution to the construction of moments of the spectral
densities at O(alpha_s^3) where the presence of massless contributions
invalidates the standard approach. We circumvent this problem through a new
definition of the moments, providing an infrared safe and consistent procedure.


title: Asymmetric Chern-Simons number diffusion from CP-violation

abstract:
  We study Chern-Simons number diffusion in a SU(2)-Higgs model with CP-odd
dimension-eight operators. We find that the thermal average of the magnitude of
the velocity of the Chern-Simons number depends on the direction of the
velocity. This implies that the distribution function of the Chern-Simons
number will develop an asymmetry. It is argued that this asymmetry manifests
itself through a linear growth of the expectation value of the third power of
the Chern-Simons number. This linear behavior of the third power of a
coordinate of a periodic direction is verified by a numerical solution of a
one-dimensional Langevin equation. Further, we make some general remarks on
thermal averages and on the possibility of the generation of the baryon
asymmetry in a non-equilibrium situation due to asymmetric diffusion of the
Chern-Simons number.


title: Quantum tunneling of superconducting string currents

abstract:
  We investigate the decay of current on a superconducting cosmic string
through quantum tunneling. We construct the instanton describing tunneling in a
simple bosonic string model, and estimate the decay rate. The tunneling rate
vanishes in the limit of a chiral current. This conclusion, which is supported
by a symmetry argument, is expected to apply in general. It has important
implications for the stability of chiral vortons.


title: New Physics and Future B Factories

abstract:
  Further experimental and theoretical studies of the physics of flavor and CP
violation are well motivated. Within the supersymmetric framework, higher
precision measurements will allow to explore classes of models with stronger
degree of universality: first, models with no universality, such as alignment
or heavy first two squark generations; second, models with approximate
universality, such as dilaton dominance or AMSB; and finally models of exact
universality, such as GMSB. A broad program, including various rare processes
or CP asymmetries in B, D and K decays, will provide detailed information about
viable extensions of the Standard Model. Some highlights of future B-physics
experiments (the present B-factories with integrated luminosity of 0.5 ab^{-1},
hadron machines, and future high-luminosity B-factories) are described.


title: Initial conditions for RHIC collisions

abstract:
  An Effective String Rope Model (ESRM) for heavy ion collisions at RHIC
energies is presented. Our model takes into account baryon recoil for both
target and projectile, arising from the acceleration of partons in an effective
field, produced in the collision. The typical field strength (string tension)
for RHIC energies is about $5-12 GeV/fm$, what allows us to talk about "string
ropes''. Now we describe an "expanding final streaks" scenario, in contrast to
a "non-expanding final streaks" discussed in our works before. The results show
that a QGP forms a tilted disk, such that the direction of the largest pressure
gradient stays in the reaction plane, but deviates from both the beam and the
usual transverse flow directions. The produced initial state can be used as an
initial condition for further hydrodynamical calculations. Such initial
conditions lead to the creation of a third flow component.


title: Single Top Production at HERA and THERA

abstract:
  We study the single top production mediated by flavor changing neutral
current via both of the $t-q-\gamma$ and $t-q-Z$ vertices (here q represents c
and u quarks) in ep collisions at two colliders HERA and THERA. Contribution of
the second vertex becomes even more important as the couplings take more
improved values provided by the higher luminosities of colliders. In addition
to these improvements if the CM energy of the collider is increased, the
production will be dominated by the anomalous $t-q-Z$ vertex.


title: Exclusive (Lambda_b -> Lambda l^+ l^-) decay beyond standard model

abstract:
  Using the most general, model independent form of the effective Hamiltonian,
the exclusive, rare baryonic (Lambda_b -> Lambda l^+ l^- ~l=\mu,\tau) decay is
analyzed. We study sensitivity of the branching ratio and lepton
forward-backward asymmetry to the new Wilson coefficients. Is is shown that
these physical quantities are quite sensitive to the new Wilson coefficients.
Determination of the position of zero value of the forward-backward asymmetry
can serve as a useful tool for establishing new physics beyond the standard
model, as well as fixing the sign of the new Wilson coefficients.


title: The Z -> gamma gamma, gg Decays in the Noncommutative Standard Model

abstract:
  On noncommutative spacetime, the Standard Model allows new, usually Standard
Model forbidden, triple gauge boson interactions. In this letter we propose the
Standard Model strictly forbidden Z -> gamma gamma and Z -> gg decay modes
coming from the gauge sector of the Noncommutative Standard Model as a place
where noncommutativity could be experimentally discovered.


title: Neutrinos in cosmology

abstract:
  Cosmological implications of neutrinos are reviewed. The following subjects
are discussed at a different level of scrutiny: cosmological limits on neutrino
mass, neutrinos and primordial nucleosynthesis, cosmological constraints on
unstable neutrinos, lepton asymmetry of the universe, impact of neutrinos on
cosmic microwave radiation, neutrinos and the large scale structure of the
universe, neutrino oscillations in the early universe, baryo/lepto-genesis and
neutrinos, neutrinos and high energy cosmic rays, and briefly some more exotic
subjects: neutrino balls, mirror neutrinos, and neutrinos from large extra
dimensions.


title:
The analytic value of the sunrise self-mass with two equal masses and
  the external invariant equal to the third squared mass

abstract:
  We consider the two-loop self-mass sunrise amplitude with two equal masses
$M$ and the external invariant equal to the square of the third mass $m$ in the
usual $d$-continuous dimensional regularization. We write a second order
differential equation for the amplitude in $x=m/M$ and show as solve it in
close analytic form. As a result, all the coefficients of the Laurent expansion
in $(d-4)$ of the amplitude are expressed in terms of harmonic polylogarithms
of argument $x$ and increasing weight. As a by product, we give the explicit
analytic expressions of the value of the amplitude at $x=1$, corresponding to
the on-mass-shell sunrise amplitude in the equal mass case, up to the $(d-4)^5$
term included.


title: p-Branes and the GZK Paradox

abstract:
  In spacetimes with asymmetric extra dimensions, cosmic neutrino interactions
may be extraordinarily enhanced by p-brane production. Brane formation and
decay may then initiate showers deep in the Earth's atmosphere at rates far
above the standard model rate. We explore the p-brane discovery potential of
cosmic ray experiments. The absence of deeply penetrating showers at AGASA
already provides multi-TeV bounds on the fundamental Planck scale that
significantly exceed those obtained from black hole production in symmetric
compactification scenarios. This sensitivity will be further enhanced at the
Auger Observatory. We also examine the possibility that p-brane formation
resolves the GZK paradox. For flat compactifications, astrophysical bounds
exclude this explanation. For warped scenarios, a solution could be consistent
with the absence of deep showers only for extra dimensions with fine-tuned
sizes well below the fundamental Planck length. In addition, it requires
moderately penetrating showers, so far not reported, and ~100% modifications to
standard model phenomenology at 100 GeV energies.


title:
Hochenergiestreuung im Nichtperturbativen Vakuum der
  Quantenchromodynamik [High-energy scattering in the nonperturbative vacuum of
  Quantum Chromodynamics]

abstract:
  We consider scattering in nonperturbative Quantum Chromodynamics (QCD) for
large invariant centre of mass energy $\surd s$. Our analysis is based upon the
Stochastic Vacuum Model~(SVM) of Dosch and Simonov and on the nonperturbative
$s \to \infty$-asymptotic formula of Nachtmann for the scattering of two Wegner
Wilson loops. We argue, that its validity can be expanded to large but finite
values of~$s$ by {\sl not} substituting the initial near light-like loops for
their exact light-like limits. Thus, the $T$-amplitude depends on $s$ beyond
the kinematical factor. This $s$-dependence is explicitly calculated. We
conclude performing the analytical continuation to Euclidean spacetime and in
that way make accessible high-energy scattering to Euclidean theories such as
QCD lattice gauge theory. Based upon the $s \to \infty$-asymptotic formula, we
further calculate exclusive photo- and leptoproduction of a vectormeson at the
proton: $\ga^{(*)}p \to V p$}, -- for $V \equiv \rho(770), \omega(782),
\phi(1020), J/\psi(3097)$ and $\rh(1450), \rh(1700)$. Essential entities are
the photon light-cone wave function of light-cone perturbation theory (LCPT)
universalised to vanishing virtualities $Q$ and wave functions for the
vectormesons modelled accordingly. We verify the SVM-specific mechanism of
formation of interacting gluonic strings between the quark constituents.


title:
Effects of Top-Quark Anomalous Decay Couplings at \gamma \gamma
  Colliders

abstract:
  Most general tbW couplings were investigated in the process \gamma \gamma ->
ttbar -> l^{+-} X for unpolarized photon beams. The double angular and energy
distribution of the lepton was calculated and an optimal-observable analysis on
it was carried out for the SM ttbar production mechanism. It was also shown
that the leptonic angular distribution is insensitive to non-standard tbW
vertex. That means that observation of non-standard effects indicates existence
of some new physics in the production part.


title: Two-parton twist-3 factorization in perturbative QCD

abstract:
  We prove collinear factorization theorem for the process $\pi\gamma^*\to\pi$
at the twist-3 level in the covariant gauge by means of the Ward identity,
concentrating on the two-parton case. It is shown that soft divergences cancel
and collinear divergences are grouped into the pseudo-scalar and pseudo-tensor
two-parton twist-3 pion distribution amplitudes. The delicate summation of a
complete set of diagrams for achieving factorization in momentum, spin, and
color spaces is emphasized. The proof is then extended to the exclusive
semileptonic decay $B\to\pi l\bar\nu$, assuming the hard scale to be of
$O(\sqrt{\bar\Lambda M_B})$, where $\bar\Lambda$ is a hadronic scale and $M_B$
the $B$ meson mass. We explain the distinction between the factorization of
collinear divergences for a pion distribution amplitude and of soft divergences
for a $B$ meson distribution amplitude. The gauge invariance and universality
of the two-parton twist-3 pion distribution amplitudes are confirmed. The proof
presented here can accommodate the leading twist-2 case. We then compare our
proof with that performed in the framework of soft-collinear effective theory.


title: Higher-Order Corrections to QCD Factorization in B->pi K,pi pi Decays

abstract:
  The renormalon calculus is used to calculate the terms of order
$\beta_0^{n-1}\alpha_s^n$ in the perturbative expansions of the Wilson
coefficients and hard-scattering kernels entering the QCD factorization formula
for hadronic B-meson decays into two light pseudoscalar mesons. The asymptotic
behavior of the expansions is analyzed, and a minimal model of power
corrections arising from soft ``non-factorizable'' gluon exchange to the B->pi
K,pi pi decay amplitudes is obtained, which takes into account the structure of
the leading and subleading infrared renormalon singularities. Whereas the
resulting power corrections are generally very small, some of the
strong-interaction phases of the hard-scattering kernels receive sizeable
two-loop corrections. The implications of these findings on CP asymmetries and
branching ratios are investigated.


title: Slepton Oscillation at Large Hadron Collider

abstract:
  Measurement of Lepton-Flavor Violation (LFV) in the minimal SUSY Standard
Model (MSSM) at Large Hadron Collider (LHC) is studied based on a realistic
simulation. We consider the LFV decay of the second-lightest neutralino,
$\tilde{\chi}^0_2 \to \tilde{l} l' \to l l' \tilde{\chi}^0_1$, in the case
where the flavor mixing exists in the right-handed sleptons. We scan the
parameter space of the minimal supergravity model (MSUGRA) and a more generic
model in which we take the Higgsino mass $\mu$ as a free parameter. We find
that the possibility of observing LFV at LHC is higher if $\mu$ is smaller than
the MSUGRA prediction; the LFV search at LHC can cover the parameter range
where the $\mu \to e \gamma$ decay can be suppressed by the cancellation among
the diagrams for this case.


title:
Phenomena of spin rotation and oscillation of particles (atoms,
  molecules) containing in a trap blowing on by wind of high energy particles
  in storage ring

abstract:
  Spin rotation and oscillation phenomena of particles captured in a gas target
through which beam of high energy particles passes is discussed. Such
experiment arrangement make it realizable for storage ring and allows to study
zero-angle scattering amplitude at highest possible energies.


title:
Electroweak two-loop corrections to the MW-MZ mass correlation in the
  Standard Model

abstract:
  Recently exact results for the complete fermionic two-loop contributions to
the prediction for the W-boson mass from muon decay in the electroweak Standard
Model have been published [hep-ph/0007091]. This paper illustrates the
techniques that have been applied for this calculation, in particular the
renormalisation procedure and the treatment of IR-divergent QED contributions.
Numerical results are presented in terms of simple parametrisation formulae and
compared in detail with a previous result of an expansion up to next-to-leading
order in the top-quark mass. An estimate of the remaining theoretical
uncertainties of the MW-prediction from unknown higher-order corrections is
given. For the bosonic two-loop corrections a partial result is presented,
yielding the Higgs-mass dependence of these contributions.


title: Gluon induced contributions to WZ and W gamma production at NNLO

abstract:
  We calculate the contribution of the partonic processes gg->WZ q\bar{q} and
gg -> W gamma q\bar{q} to WZ and W gamma pair production at hadron colliders,
including anomalous triple gauge-boson couplings. We use the helicity method
and include the decay of the W and Z-boson into leptons in the narrow-width
approximation. In order to integrate over the q\bar{q} final state phase space
we use an extended version of the subtraction method to NNLO and remove
collinear singularities explicitly. Due to the large gluon density at low x,
the gluon induced terms of vector-boson pair production are expected to be the
dominant NNLO QCD correction, relevant at LHC energies. However, we show that
due to a cancellation they turn out to provide a rather small contribution,
anticipating good stability for the perturbative expansion.


title:
Motion of test particles in six-dimensional dilatonic Kaluza-Klein
  theory

abstract:
  Multidimensional theories still remain attractive from the point of view of
better understanding of fundamental interactions. In this paper we consider a
six - dimensional Kaluza -- Klein type model at the classical level. We derive
static spherically symmetric solutions to the multidimensional Einstein
equations. They are fundamentally different from four - dimensional
Schwarzschild solutions: they are horizon free and the presence of massless
dilaton field has the same dynamical effect as the existence of additional
massive matter in the system. Then we analyse the motion of test particles in
such spherically symmetric configurations. The emphasis is put on some
observable quantities like redshifts. It is suggested that strange features of
emission lines from active galactic nuclei as well as quasar - galaxy
associations may in fact be manifestations of multidimensionality of our world.


title:
Centrality dependence of thermal parameters in heavy-ion collisions at
  SPS and RHIC

abstract:
  We analyze the centrality dependence of thermal parameters describing hadron
multiplicities, hadron spectra and dilepton spectra in heavy-ion collisions at
SPS and RHIC energies.


title: One loop scalar functions in the heavy quark effective theory

abstract:
  We find general solutions for the dimensionally regularised scalar one loop
three-point and four-point functions with one heavy quark propagator. The
scalar one-point function vanishes, while the expression for the two-point
function has been found before. For the latter we give a detailed derivation.
We also discuss some special cases and compile useful formulae.


title: Electroweak Unification into a Five-Dimensional SU(3) at a TeV

abstract:
  We apply a recently proposed mechanism for predicting the weak mixing angle
to theories with TeV-size dimensions. "Reconstruction" of the associated moose
(or quiver) leads to theories which unify the electroweak forces into a five
dimensional SU(3) symmetry. Quarks live at an orbifold fixed point where SU(3)
breaks to the electroweak group. A variety of theories -- all sharing the same
successful prediction of the weak mixing angle -- emerges; they differ
primarily by the spatial location of the leptons and the absence or presence of
supersymmetry. A particularly interesting theory puts leptons in a
Konopinski-Mahmoud triplet and suppresses proton decay by placing quarks and
leptons on opposite fixed points.


title: Relativistic dynamics of Qqq systems

abstract:
  The bound state of constituent quarks forming a $Qqq$ composite baryon is
investigated in a QCD-inspired effective light-front model. The light-front
Faddeev equations are derived and solved numerically. The masses of the spin
1/2 low-lying states of the nucleon, $\Lambda^0$, $\Lambda^+_c$ and
$\Lambda^0_b$ are found and compared to the experimental data. The data is
qualitatively described with a flavor independent effective interaction.


title: Angular Momentum Mixing in Crystalline Color Superconductivity

abstract:
  In crystalline color superconductivity, quark pairs form at non-zero total
momentum. This crystalline order potentially enlarges the domain of color
superconductivity in cold dense quark matter. We present a perturbative
calculation of the parameters governing the crystalline phase and show that
this is indeed the case. Nevertheless, the enhancement is modest, and to lowest
order is independent of the strength of the color interaction.


title:
Relic Neutralino Density in Scenarios with Intermediate Unification
  Scale

abstract:
  We analyse the relic neutralino density in supersymmetric models with an
intermediate unification scale. In particular, we present concrete cosmological
scenarios where the reheating temperature is as small as $\cal{O}$ $1 - 1000$
MeV). When this temperature is associated to the decay of moduli fields
producing neutralinos, we show that the relic abundance increases considerably
with respect to the standard thermal production. Thus the neutralino becomes a
good dark matter candidate with $0.1\lsim \Omega h^2 \lsim 0.3$, even for
regions of the parameter space where large neutralino-nucleon cross sections,
compatible with current dark matter experiments, are present. This is obtained
for intermediate scales $M_I\sim 10^{11}-10^{14}$ GeV, and moduli masses
$m_\phi\sim 100-1000$ GeV. On the other hand, when the above temperature is
associated to the decay of an inflaton field, the relic abundance is too small.


title: Parton Distributions in the Valon Model

abstract:
  The parton distribution functions determined by CTEQ at low $Q^2$ are used as
inputs to test the validity of the valon model. The valon distributions in a
nucleon are first found to be nearly $Q$ independent. The parton distribution
in a valon are shown to be consistent with being universal, independent of the
valon type. The momentum fractions of the partons in the valon add up
separately to one. These properties affirm the validity of the valon model. The
various distributions are parameterized for convenient application of the
model.


title:
A Unitary and Renormalizable Theory of the Standard Model in Ghost-Free
  Light-Cone Gauge

abstract:
  Light-front (LF) quantization in light-cone (LC) gauge is used to construct a
unitary and simultaneously renormalizable theory of the Standard Model. The
framework derived earlier for QCD is extended to the Glashow, Weinberg, and
Salam (GWS) model of electroweak interaction theory. The Lorentz condition is
automatically satisfied in LF-quantized QCD in the LC gauge for the free
massless gauge field. In the GWS model, with the spontaneous symmetry breaking
present, we find that the 't Hooft condition accompanies the LC gauge condition
corresponding to the massive vector boson. The two transverse polarization
vectors for the massive vector boson may be chosen to be the same as found in
QCD. The non-transverse and linearly independent third polarization vector is
found to be parallel to the gauge direction. The corresponding sum over
polarizations in the Standard model, indicated by $K_{\mu\nu}(k),$ has several
simplifying properties similar to the polarization sum $D_{\mu\nu}(k)$ in QCD.
The framework is ghost-free, and the interaction Hamiltonian of electroweak
theory can be expressed in a form resembling that of covariant theory, except
for few additional instantaneous interactions which can be treated
systematically. The LF formulation also provides a transparent discussion of
the Goldstone Boson (or Electroweak) Equivalence Theorem, as the illustrations
show.


title:
Polarized Virtual Photon Structure Function $g_2^\gamma$ and Twist-3
  Effects in QCD

abstract:
  We investigate the twist-3 effects in the polarized virtual photon structure.
The structure functions $g_1^\gamma$ and $g_2^\gamma$ of polarized photon could
be experimentally studied in the future polarized $ep$ or $e^+e^-$ colliders.
The leading contributions to $g_1^\gamma$ are the twist-2 effects, while
another structure function $g_2^\gamma$, which only exists for the virtual
photon target, receives not only the twist-2 but also twist-3 contributions. We
first show that the twist-3 effects actually exist in the box-diagram
contributions and we extract the twist-3 part, which can also be reproduced by
the pure QED operator product expansion. We then calculate the non-trivial
lowest moment ($n=3$) of the twist-3 contribution to $g_2^\gamma$ in QCD. For
large $N_c$ (the number of colors), the QCD analysis of the twist-3 effects in
the flavor nonsinglet part of $g_2^\gamma$ becomes tractable and we can obtain
its moments in a compact form for all $n$.


title: The neutrinoless double $\beta$ decay and the neutrino mass hierarchy

abstract:
  Recently the evidence of the neutrinoless double $\beta$
  ($0\nu \beta\beta$) decay has been announced. This means that neutrinos are
Majorana particles and their mass hierarchy is forced to certain patterns in
the diagonal basis of charged lepton mass matrix. We estimate the magnitude of
$0\nu \beta\beta$ decay in the classification of the neutrino mass hierarchy
patterns as Type A, $m_{1,2} \ll m_{3}$, Type B,
  $m_1 \sim m_2 \gg m_3$, and Type C, $m_1 \sim m_2 \sim m_3$, where $m_{i}$ is
the $i$-th generation neutrino absolute mass. The data of $0\nu \beta\beta$
decay experiment suggests the neutrino mass hierarchy pattern should be Type B
or C. Type B predicts a small magnitude of $0\nu \beta\beta$ decay which is
just edge of the allowed region of experimental value in $95% \mathrm{c.l.}$,
where Majorana CP phases should be in a certain parameter region. Type C can
induce the suitably large amount of $0\nu \beta\beta$ decay which is consistent
with the experimental data, where overall scale of degenerate neutrino mass
plays a crucial role, and its large value can induce the large $0\nu
\beta\beta$ decay in any parameter regions of Majorana CP phases.


title: Parton Production Via Vacuum Polarization

abstract:
  We discuss the production mechanism of partons via vacuum polarization during
the very early, gluon dominated phase of an ultrarelativistic heavy-ion
collision in the framework of the background field method of quantum
chromodynamics.


title:
Can ICARUS and OPERA \nu_{\tau} appearance experiments detect new flavor
  physics ?

abstract:
  In this letter we explore whether we have a chance to observe a
flavor-changing effect in $\tau$ appearance experiments ICARUS and OPERA.


title: Double Spin Asymmetry in Semi-inclusive Deep Inelastic Scattering

abstract:
  We shortly review the various methods suggested for determining the
transversity function. Among such methods, we consider especially those based
on semi-inclusive deep inelastic scattering. In the framework of this kind of
reactions, we propose to measure a double spin asymmetry, using a transversely
polarized proton target and a longitudinally polarized lepton beam, and fixing
the direction of the final pion. Under particular conditions, the asymmetry is
sensitive to the transversity function.


title: Power law enhancement of neutrino mixing angles in extra dimensions

abstract:
  We study the renormalization of the $llHH$-type Majorana neutrino mass
operator in a scenario where there is a compactified extra dimension and the
fields involved correspond to only the standard model particles and their
Kaluza-Klein excitations. We observe that in a two flavour scenario, where one
of the neutrinos is necessarily $\nu_\tau$, it is indeed possible to generate a
large mixing at $\sim$ 100 GeV starting from a very small mixing near the
ultra-violet cutoff $\sim$ 30 TeV. {\em En passant}, we also derive the Higgs
mass upper and lower limits from perturbative unitarity and stability of the
potential, respectively.


title: Relativistic bound-state calculations in Light Front Dynamics

abstract:
  We calculated bound states in the quantum field theoretical approach. Using
the Wick-Cutkosky model and an extended version of this model (in which a
particle with finite mass is exchanged) we have calculated the bound states in
the scalar case.


title: Neutrino Masses and Mixings in SUSY with Broken R-Parity

abstract:
  The simplest unified extension of the Minimal Supersymmetric Standard Model
with bilinear R-Parity violation provides a predictive scheme for neutrino
masses which can account for the observed atmospheric and solar neutrino
anomalies. Despite the smallness of neutrino masses R-parity violation is
observable at present and future high-energy colliders, providing an
unambiguous cross-check of the model.


title: Towards a Consistent SUSY QFT in Extra Dimensions

abstract:
  We consider N=1 SUSY gauge theory in six dimensions in components and show
that provided the Dynkin indices of the matter fields representations satisfy
the relation $\sum T(R)= C_2(G)$, the gauge sector is completely one-loop
finite. In the matter sector the UV divergences form several invariant
structures some of which are cancelled in physical amplitudes. Thus, the theory
which is in general non-renormalizable may be consistent and even finite.
Consequences for the SUSY GUT models in the bulk are briefly discussed.


title: QCD Universality recovered via the Total Available Quadri-Scalar: Atot

abstract:
  After presenting a brief review of the phenomenology of the Leading Effect,
we define a new variable, the ``Total Available Quadri-Scalar'' (Atot), and
propose it as the invariant quantity effectively available for the production
of the multihadronic final states. The introduction and the definition of this
new variable are justified by means of simple geometrical-kinematical
considerations and we show that Atot reduces to the so-called Effective Energy
in the single specific situation where the use of the latter applies. Using
Atot to re-plot existing data, the quantity <Nch> is shown to be a
``Universality Feature'' - that is, independent from the process under exam,
the collider nominal energy, and even from the hadronic invariant mass - as
imposed by QCD Universality.


title: nu_e->nu_s oscillations with large neutrino mass in NuTeV?

abstract:
  We propose an explanation of the NuTeV anomaly in terms of oscillations of
electron neutrinos into sterile neutrinos. We derive an approximate average
transition probability P(nu_e->nu_s) = 0.21 +- 0.07, which is compatible with
other neutrino data if the mass-squared difference Delta m^2 that drives the
oscillations is about 10 - 100 eV^2.


title: The large-N(c) nuclear potential puzzle

abstract:
  An analysis of the baryon-baryon potential from the point of view of
large-N(c) QCD is performed. A comparison is made between the N(c)-scaling
behavior directly obtained from an analysis at the quark-gluon level to the
N(c)-scaling of the potential for a generic hadronic field theory in which it
arises via meson exchanges and for which the parameters of the theory are given
by their canonical large-N(c) scaling behavior. The purpose of this comparison
is to use large-N(c) consistency to test the widespread view that the
interaction between nuclei arises from QCD through the exchange of mesons.
Although at the one- and two-meson exchange level the scaling rules for the
potential derived from the hadronic theory matches the quark-gluon level
prediction, at the three- and higher-meson exchange level a generic hadronic
theory yields a potential which scales with N(c) faster than that of the
quark-gluon theory.


title: b -> s gamma in the left-right supersymmetric model

abstract:
  The rare decay $b \to s \gamma$ is studied in the left-right supersymmetric
model. We give explicit expressions for all the amplitudes associated with the
supersymmetric contributions coming from gluinos, charginos and neutralinos in
the model to one-loop level. The branching ratio is enhanced significantly
compared to the standard model and minimal supersymmetric standard model values
by contributions from the right-handed gaugino and squark sector. We give
numerical results coming from the leading order contributions. If the only
source of flavor violation comes from the CKM matrix, we constrain the scalar
fermion-gaugino sector. If intergenerational mixings are allowed in the squark
mass matrix, we constrain such supersymmetric sources of flavor violation. The
decay $b \to s \gamma$ sets constraints on the parameters of the model and
provides distinguishing signs from other supersymmetric scenarios.


title: Shifts in the Properties of the Higgs Boson from Radion Mixing

abstract:
  We examine how mixing between the Standard Model Higgs boson, $h$, and the
radion present in the Randall-Sundrum model of localized gravity modifies the
expected properties of the Higgs boson. In particular, we demonstrate that the
total and partial decay widths of the Higgs, as well as the $h\to gg$ branching
fraction, can be substantially altered from their Standard Model expectations.
The remaining branching fractions are modified less than $\lsim 5%$ for most of
the parameter space volume.


title: Supersymmetry and the Cosmic Ray Positron Excess

abstract:
  We explore several supersymmetric alternatives to explain predictions for the
cosmic ray positron excess. Light sneutrino or neutralino LSP's, and a
fine-tuned model designed to provide a delta-function input, can give adequate
statistical descriptions of the reported HEAT data if non-thermal production of
the relic cold dark matter density dominates and/or if ``boost factors''(that
could originate in uncertainties from propagation or local density
fluctuations) to increase the size of the signal are included. All the
descriptions can be tested at the Tevatron or LHC, and some in other WIMP
detecting experiments.


title: Hadron 2001 Conference Summary: Theory

abstract:
  This contribution reviews some of the theoretical issues and predictions that
were discussed at HADRON2001. The topics are divided into principle areas, 1)
exotics, 2) vectors, 3) scalars, and 4) higher-mass states. The current status
of theoretical predictions for each area are summarized, together with a brief
description of experiment. New and detailed experimental results are presented
in the companion Experimental Summary by Klempt.


title: Supernova 1987A did not test the neutrino mass hierarchy

abstract:
  We dispel the misconception that data from SN 1987A favor the normal neutrino
mass hierarchy over the inverted hierarchy for $\sin^2 \theta_{13} \gsim
10^{-4}$. We find comparable fits for the two hierarchies. No bound can be
placed on the mixing angle $\theta_{13}$ even at the 1$\sigma$ level.


title: Instanton Model of QCD Phase Transition Bubble Walls

abstract:
  Using the liquid instanton model continued into Minkowski space and modified
for finite temperature, the energy momentum tensor and the surface tension for
buble walls during the QCD phase transition are derived. The resulting surface
tension is in agreement with lattice calculations. Application to bubble
collisions is discussed.


title: Indirect limits on the CPT violating background in the neutrino sector

abstract:
  CPT violation in the neutrino sector, suggested as a new way to reconcile
different neutrino anomalies, induces at the radiative level observable effects
among charged leptons, where high-precision tests of the CPT symmetry are
available. We show that, in the models with heavy right-handed Majorana
neutrinos, constraints imposed by these experiments require CPT violation in
neutrino spectrum be suppressed to a level undetectable for any conceivable
neutrino experiment. We find that the CPT violation in the neutrino sector may
evade indirect constraints only at the expense of light right-handed neutrinos
with small Yukawa couplings to the Standard Model sector or by allowing
non-locality well below the electroweak scale.


title: "Nonbaryonic" Dark Matter as Baryonic Color Superconductor

abstract:
  We discuss a novel cold dark matter candidate which is formed from the
ordinary quarks during the QCD phase transition when the axion domain wall
undergoes an unchecked collapse due to the tension in the wall. If a large
number of quarks is trapped inside the bulk of a closed axion domain wall, the
collapse stops due to the internal Fermi pressure. In this case the system in
the bulk, may reach the critical density when it undergoes a phase transition
to a color superconducting phase with the ground state being the quark
condensate, similar to the Cooper pairs in BCS theory. If this happens, the new
state of matter representing the diquark condensate with a large baryon number
$B \sim 10^{32}$ becomes a stable soliton-like configuration. Consequently, it
may serve as a novel cold dark matter candidate.


title: Probing Heavy Higgs Boson Models with a TeV Linear Collider

abstract:
  The last years have seen a great development in our understanding of particle
physics at the weak scale. Precision electroweak observables have played a key
role in this process and their values are consistent, within the Standard Model
interpretation, with a light Higgs boson with mass lower than about 200 GeV. If
new physics were responsible for the mechanism of electroweak symmetry
breaking, there would, quite generally, be modifications to this prediction
induced by the non-standard contributions to the precision electroweak
observables. In this article, we analyze the experimental signatures of a heavy
Higgs boson at linear colliders. We show that a linear collider, with center of
mass energy \sqrt{s} <= 1 TeV, would be very useful to probe the basic
ingredients of well motivated heavy Higgs boson models: a relatively heavy
SM-like Higgs, together with either extra scalar or fermionic degrees of
freedom, or with the mixing of the third generation quarks with non-standard
heavy quark modes.


title:
Investigations of the pi N total cross sections at high energies using
  new FESR: log nu or (log nu)^2

abstract:
  We propose to use rich informations on pi p total cross sections below N= 10
GeV in addition to high-energy data in order to discriminate whether these
cross sections increase like log nu or (log nu)^2 at high energies, since it is
difficult to discriminate between asymptotic log nu and (log nu)^2 fits from
high-energy data alone. A finite-energy sum rule (FESR) which is derived in the
spirit of the P' sum rule as well as the n=1 moment FESR have been required to
constrain the high-energy parameters. We then searched for the best fit of pi p
total cross sections above 70 GeV in terms of high-energy parameters
constrained by these two FESR. We can show from this analysis that the (log
nu)^2 behaviours is preferred to the log nu behaviours.


title: Kinetic-theory approach to Gluon Self-energy beyond Hard Thermal Loops

abstract:
  We compare the effective dynamics of soft fields, based on temperature field
theory, with the mean field dynamics from non-Abelian kinetic theory. We derive
the polarization tensor with the leading logarithmic factor
$\log({gT\over\mu})$ from the effective Boltzmann-Langevin equation given by
Litim and Manuel. The tensor is identical with effective one-loop contributions
within the hard thermal loop effective theory.


title:
From the Dyson-Schwinger to the Transport Equation in the Background
  Field Gauge of QCD

abstract:
  The non-equilibrium quantum field dynamics is usually described in the
closed-time-path formalism. The initial state correlations are introduced into
the generating functional by non-local source terms. We propose a functional
approach to the Dyson-Schwinger equation, which treats the non-local and local
source terms in the same way. In this approach, the generating functional is
formulated for the connected Green functions and one-particle-irreducible
vertices. The great advantages of our approach over the widely used
two-particle-irreducible method are that it is much simpler and that it is easy
to implement the procedure in a computer program to automatically generate the
Feynman diagrams for a given process. The method is then applied to a pure
gluon plasma to derive the gauge-covariant transport equation from the
Dyson-Schwinger equation in the background covariant gauge. We discuss the
structure of the kinetic equation and show its relationship with the classical
one. We derive the gauge-covariant collision part and present an approximation
in the vicinity of equilibrium. The role of the non-local source kernel in the
non-equilibrium system is discussed in the context of a free scalar field.


title:
FeynHiggs1.2: Hybrid MSbar/on-shell Renormalization for the CP-even
  Higgs Boson Sector in the MSSM

abstract:
  An updated version is presented of the Fortran code FeynHiggs for the
evaluation of the neutral CP-even Higgs sector masses and mixing angles. It
differs from the previous version by a modification of the renormalization
scheme concerning the treatment of subleading terms at the one-loop level; the
two-loop corrections, for which the leading contributions of O(alpha_t alphas)
and O(alpha_t^2) are implemented, are not affected by the modified
renormalization prescription. Besides stabilizing the Higgs mass calculations
and avoiding unphysically large threshold effects, the mass of the lightest
MSSM Higgs boson, m_h, is increased by 1-2 GeV for most parts of the MSSM
parameter space.


title:
Suggestions for Benchmark Scenarios for MSSM Higgs Boson Searches at
  Hadron Colliders

abstract:
  The Higgs boson search has shifted from LEP2 to the Tevatron and will
subsequently move to the LHC. Due to the different initial states, the Higgs
production and decay channels relevant for Higgs boson searches were different
at LEP2 to what they are at hadron colliders. We suggest new benchmark
scenarios for the MSSM Higgs boson search at hadron colliders that exemplify
the phenomenology of different parts of the MSSM parameter space. Besides the
m_h^max scenario and the no-mixing scenario used in the LEP2 Higgs boson
searches, we propose two new scenarios. In one the main production channel at
the LHC, gg -> h, is suppressed. In the other, important Higgs decay channels
at the Tevatron and at the LHC, h -> b \bar b and h -> tau^+ tau^-, are
suppressed. All scenarios evade the LEP2 constraints for nearly the whole
M_A-tan beta-plane.


title: Microwave Background Constraints on Decaying Defects

abstract:
  Embedded defects are predicted in a host of particle physics theories, in
particular in the standard electroweak theory. They can be stabilized by
interactions with the cosmological plasma, but will decay once the plasma falls
out of equilibrium, emitting a substantial fraction of non-thermal photons. If
the decay happens after a redshift of about $10^6$, these photons will give
rise to spectral distortions of the Cosmic Microwave Background, which leads to
strong constraints on the underlying particle physics theory. Such constraints
apply to any model with decaying defects, and in particular to theories
predicting decaying vortons, thereby leading to constraints stronger than the
dark matter limit.


title: The Chiral Anomaly and High-Energy Scattering in QCD

abstract:
  Infra-red properties of the triangle anomaly and the ``anomaly pole'' are
elaborated and applied to the study of high-energy scattering in QCD, when the
gauge symmetry is partially broken to SU(2). It is shown that the chiral flavor
anomaly provides a wee-gluon component for Goldstone bosons that combines with
interactions due to the U(1) anomaly to produce an infra-red transverse
momentum scaling divergence in scattering amplitudes. After the divergence is
factorized out, as a wee-gluon condensate in the infinite momentum pion, the
remaining physical amplitudes have confinement and chiral symmetry breaking. A
lowest-order contribution to the pion scattering amplitude is calculated in
detail. Although originating from very complicated diagrams, the amplitude has
a remarkable (semi-)perturbative simplicity. The momentum structure is that of
single gluon exchange but zero momentum quarks inject additional spin and color
structure via anomaly interactions.


title:
Strong and Weak Phases from Time-Dependent Measurements of $B \to \pi
  \pi$

abstract:
  Time-dependence in $B^0(t) \to \pi^+ \pi^-$ and $\ob(t) \to \pi^+ \pi^-$ is
utilized to obtain a maximal set of information on strong and weak phases. One
can thereby check theoretical predictions of a small strong phase $\delta$
between penguin and tree amplitudes. A discrete ambiguity between $\delta
\simeq 0$ and $\delta \simeq \pi$ may be resolved by comparing the observed
charge-averaged branching ratio predicted for the tree amplitude alone, using
measurements of $B \to \pi l \nu$ and factorization, or by direct comparison of
parameters of the Cabibbo-Kobayashi-Maskawa (CKM) matrix with those determined
by other means. It is found that with 150 fb$^{-1}$ from BaBar and Belle, this
ambiguity will be resolvable if no direct CP violation is found. In the
presence of direct CP violation, the discrete ambiguity between $\delta$ and
$\pi - \delta$ becomes less important, vanishing altogether as $|\delta| \to
\pi/2$. The role of measurements involving the lifetime difference between
neutral $B$ eigenstates is mentioned briefly.


title: Higher-Dimensional QCD without the Strong CP Problem

abstract:
  QCD in a five-dimensional sliced bulk with chiral extra-quarks on the
boundaries is generically free from the strong CP problem. Accidental axial
symmetry is naturally present except for suppressed breaking interactions,
which plays a role of the Peccei-Quinn symmetry to make the strong CP phase
sufficiently small.


title:
Infrared behavior of the running coupling constant and bound states in
  QCD

abstract:
  The perturbative expression of the running strong coupling constant
\alpha_{\rm s}(Q^{2}) has an unphysical singularity for Q^{2} =
\Lambda^{2}_{\rm QCD}. Various modification have been proposed for the infrared
region. The effect of some of such proposals on the quark-antiquark spectrum is
tested on a Bethe-Salpeter (second order) formalism which was successfully
applied in previous papers to an overall evaluation of the spectrum in the
light-light, light-heavy and heavy-heavy sectors (the only serious discrepancy
with data being for the light pseudoscalar meson masses). In this paper only
the {\rm c} \bar{\rm c}, {\rm b} \bar{\rm b} and {\rm q} \bar{\rm q} (q = u or
d) cases are considered and fine structure is neglected. It is found that in
the {\rm b} \bar{\rm b} and {\rm c} \bar{\rm c} cases the results are little
sensitive to the specific choice. In the light-light case the Dokshitzer et al.
prescription is again essentially equivalent to the truncation prescription
used in the previous calculation and it is consistent with the same a priori
fixing of the quark light masses on the typical current values m_{\rm u} =
m_{\rm d} = 10 MeV (only the pion mass resulting completely out of scale of
about 500 MeV). With the Shirkov-Solovtsov prescription, on the contrary, a
reasonable agreement with the data is obtained only at the price of using a
phenomenological momentum dependent effective mass for the quark. The use of
such an effective mass should amount to a correction of the free quark
propagator. It is remarkable that this has also the effect of bringing the pion
mass in the correct range.


title: Statistical coalescence model of J/psi production at the SPS and RHIC

abstract:
  A recently developed statistical coalescence model of the J/psi production is
presented. The NA50 data on the J/psi suppression pattern and the transverse
mass spectra in Pb+Pb collisions at the SPS are analyzed. The model predictions
for the RHIC energies are formulated. The measurements of J/psi in Au+Au
collisions at RHIC are crucial for disentangling the different scenarios of
charmonia formation.


title: Increased Yield of ttbb at Hadron Colliders in Low-Energy Supersymmetry

abstract:
  Light bottom squarks and gluinos have been invoked to explain the b quark
pair production excess at the Tevatron. We investigate the associated
production of ttbb at hadron colliders in this scenario, and find that the
rates for this process are enhanced over the Standard Model prediction. If
light gluinos exist, it may be possible to detect them at the Tevatron, and
they could easily be observed at the LHC.


title: On The Expected Photon Spectrum in B -> X_s + gamma and Its Uses

abstract:
  Measuring the photon energy spectrum in radiative B decays provides essential
help for gaining theoretical control over semileptonic B transitions. The
hadronic recoil mass distribution in B -> X_u \ell\nu promises the best
environment for determining |V_ub|. The theoretical uncertainties are largest
in the domain of low values of the lepton pair mass q^2. Universality relations
allow to describe this domain reliably in terms of the photon spectrum in B ->
X_s + \gamma. A method is proposed to incorporate 1/m_b corrections into this
relation. The low-E_\gamma tail in radiative decays is important in the context
of extracting |V_ub|. We argue that CLEO's recent fit to the spectrum
underestimates the fraction of the photon spectrum below 2 GeV. Potentially
significant uncertainties enter in the theoretical evaluation of the integrated
end-point lepton spectrum or the B -> X_u \ell\nu width with a too high value
of the lower cut on q^2 in alternative approaches to |V_ub|.


title:
Next-to-leading order corrections to W+2 jet and Z+2 jet production at
  hadron colliders

abstract:
  We report on QCD radiative corrections to the processes p pbar --> W + 2 jets
and p pbar --> Z + 2 jets at the Tevatron. These processes are included in the
Monte Carlo program MCFM, which allows the calculation of any infra-red finite
variable at next-to-leading order. Due to a better theoretical description of
jets at next-to-leading order, some distributions exhibit significant
corrections. As expected, the unphysical dependence of theoretical predictions
upon the renormalization and factorization scales is greatly reduced compared
to leading order. As an example of the predictions that may now be made with
MCFM, we present a next-to-leading order estimate of the heavy flavor content
of jets produced in association with vector bosons.


title:
Semiclassical force for electroweak baryogenesis: three-dimensional
  derivation

abstract:
  We derive a semiclassical transport equation for fermions propagating in the
presence of a CP-violating planar bubble wall at a first order electroweak
phase transition. Starting from the Kadanoff-Baym (KB) equation for the
two-point (Wightman) function we perform an expansion in gradients, or
equivalently in the Planck constant h-bar. We show that to first order in h-bar
the KB equations have a spectral solution, which allows for an on-shell
description of the plasma excitations. The CP-violating force acting on these
excitations is found to be enhanced by a boost factor in comparison with the
1+1-dimensional case studied in a former paper. We find that an identical
semiclassical force can be obtained by the WKB method. Applications to the MSSM
are also mentioned.


title: Family Unification in Five and Six Dimensions

abstract:
  In family unification models, all three families of quarks and leptons are
grouped together into an irreducible representation of a simple gauge group,
thus unifying the Standard Model gauge symmetries and a gauged family symmetry.
Large orthogonal groups, and the exceptional groups $E_7$ and $E_8$ have been
much studied for family unification. The main theoretical difficulty of family
unification is the existence of mirror families at the weak scale. It is shown
here that family unification without mirror families can be realized in simple
five-dimensional and six-dimensional orbifold models similar to those recently
proposed for SU(5) and SO(10) grand unification. It is noted that a family
unification group that survived to near the weak scale and whose coupling
extrapolated to high scales unified with those of the Standard model would be
evidence accessible in principle at low energy of the existence of small
(Planckian or GUT-scale) extra dimensions.


title: On the effective Hamiltonian for QCD: An overview and status report

abstract:
  The session on effective Hamiltonians and chiral dynamics is overviewed,
combined with a review on the bound-state problem. The progress during this
session allows to remove all dependence on regularization in an effective
interaction, thus to renormalize a Hamiltonian for the first time, and to solve
front form as if they were instant-form equations, with all the advantages
implied.


title: Quasiparticles in QCD thermodynamics and applications

abstract:
  We propose a novel quasiparticle interpretation of the equation of state of
deconfined QCD at finite temperature. Using appropriate thermal masses, we
introduce a phenomenological parametrization of the onset of confinement in the
vicinity of the phase transition. Lattice results of the energy density, the
pressure and the interaction measure of pure SU(3) gauge theory are well
reproduced. A relation between the thermal energy density of the Yang-Mills
vacuum and the chromomagnetic condensate <B^2>_T is found. We also present the
two flavour QCD equation of state for realistic quark masses and apply the
model to dilepton production in ultrarelativistic heavy-ion collisions.


title:
Pedagogic model for Deeply Virtual Compton Scattering with quark-hadron
  duality

abstract:
  We show how quark-hadron duality can emerge for valence spin averaged
structure functions, and for the non-forward distributions of Deeply Virtual
Compton Scattering. Novel factorisations of the non-forward amplitudes are
proposed. Some implications for large angle scattering and deviations from the
quark counting rules are illustrated.


title:
Calculation Of Secondary Particles In Atmosphere And Hadronic
  Interactions

abstract:
  Calculation of secondary particles produced by the interaction of cosmic rays
with the nuclei of Earth's atmosphere pose important requirements to particle
production models. Here we summarize the important features of hadronic
simulations, stressing the importance of the so called ``microscopic''
approach, making explicit reference to the case of the FLUKA code. Some
benchmarks are also presented.


title:
Extraction of the neutron charge form factor from the charge form factor
  of deuteron

abstract:
  We extract the neutron charge form factor from the charge form factor of
deuteron obtained from $T_{20}(Q^2)$ data at $0\le Q^2\le$ 1.717 (GeV$^2$). The
extraction is based on the relativistic impulse approximation in the instant
form of the relativistic Hamiltonian dynamics. Our results (12 new points) are
compatible with existing values of the neutron charge form factor of other
authors. We propose a fit for the whole set (35 points) taking into account the
data for the slope of the form factor at $Q^2 = 0$.


title: Gluon exchange and p_{T} distribution

abstract:
  It is shown that even if a quark q is on the mass shell, the quark q' created
via vacuum pair production in the process q -> h + q' has wide distribution for
its spacelike virtuality, and so at the end of daughter string (q'\bar{q})
there is a parton having wide distributed spacelike virtuality. However, the
essence of the parton model is to regard a high energy hadron-like cluster as a
collection of quasifree partons. Therefore we use a set of some principles of
string model, formulated, for example, by Andersson and Nilsson, that gluons
move like localised particles carrying energy momentum between quark and
antiquark at the endpoints of string, and so we take into account they go on
the mass shell before the break of daughter string occurs. It is stressed, the
gluons carry also transverse momentum which could be connected with spacelike
virtuality of quark at the end of string. Some approximations to describe the
gluon exchange are studied and results of Monte Carlo calculations for
antiproton-proton interactions are given.


title:
Tasi lectures: weak scale supersymmetry - a top-motivated-bottom-up
  approach

abstract:
  Introduction, Perspective - since particle physics beyond the SM is presently
in an incoherent state, with lots of static, a long introduction is needed,
including some history of the supersymmetry revolutions, physics not described
by the SM, indirect evidence for low energy supersymmetry and how flavor
physics should be approached. Derive the supersymmetric Lagrangian - the
superpotential W. Soft supersymmetry breaking - underlying physics - the
general soft-breaking Lagrangian - the MSSM. The \mu opportunity - R-parity
conservation. Count of parameters - constraints - measuring the parameters.
Connecting the weak and unification scale. Derivation of the Higgs mechanism -
in what sense does supersymmetry explain the Higgs physics.
  The Higgs spectrum - \tan\beta, Yukawa couplings, constraints. LEP Higgs
physics - Tevatron Higgs physics can confirm the Higgs mechanism and coupling
proportional to mass - measurements in the Higgs sector. gluino, Neutralino,
Chargino - cannot in general measure \tan\beta at hadron colliders. Effects of
soft phases - all observables, not only CPV ones, g-2, EDMs, gluino phase, LSP
CDM, possible connections to stringy physics. Phase structure of simple D-brane
models. Tevatron superpartner searches, signatures. Extensions of the MSSM. The
importance of low scale supersymmetry is not only that we learn of another
profound aspect of our world, but also to provide a window to Planck scale
physics, in order to connect string theory and our world.


title: Confinement and bound states in QCD

abstract:
  I revue the so called Wilson loop approach to bound state problem in QCD. I
shall show how using appropriate path integral representations for the quark
propagator in an external field it is possible to obtain corresponding path
integral representations for various types of gauge invariant Green functions
which have the important feature of involving the gauge field only trough
Wilson loop correlators or their generalizations. Two different kinds of
representations are used, one given in the form of a semi-relativistic
expansion, the second completely relativistic of the Feynmann-Schwinger type.
In this way starting from reasonable ansatz on the non perturbative part of the
Wilson correlator one can obtain: expressions for the semi relativistic (spin
dependent and momentum dependent) q \bar q and 3q potentials, a ``second
order'' q \bar q Bethe-Salpeter equation and and a related Dyson-Schwinger
equation. I shall concentrate on the three quark potential for which new
controversial results have been obtained by lattice numerical simulations and
on a three dimensional reduction of the BS equation obtained in the form of the
eigenvalue equation of of a squared or a usual mass operator. We shall report
on a numerical resolution of such equations which seems to give a comprehensive
reproduction of the entire meson spectrum with the exception of light
pseudo-scalar bound states for which a complete four dimensional treatment
should be necessary.


title: On flavor mixing by an effective Light-Cone QCD-Hamiltonian

abstract:
  The $\uparrow\downarrow$-model has produced the physical masses of all
flavor-asymmetric mesons like the $\pi^\pm$ or the $\rho^\pm$. Can the same
model also account for the flavor-symmetric mesons like the $\pi^0$ or the
$\rho^0$? -- By adjusting one parameter in a $5\times5$-matrix, the
$\pi$-$\eta$ degeneracy is lifted and the $\eta-\eta'$ splitting falls into the
right ball park. The isospin triplets for pions and rhos are caused the
mass-degeneracy of the up and down quark.


title: Rare kaon decays in SUSY with non-universal A terms

abstract:
  We study the rare kaon decays in the framework of general SUSY models. Unlike
the results in the literature, we find the contributions from the gluino
exchange to the branching ratio of $K^+\to \pi^+ \nu \bar{\nu}$ can reach the
central value ($\sim 1.5 \times 10^{-10}$) of the new E787 data while the
predicted value of standard model is less than $10^{-10}$. We also find that
the same effects also enhance the decays of $K_{L}\to \pi^0 \nu \bar{\nu}$,
$K_L\to\pi^0e^{+} e^{-}$ and $K_L\to\mu^+ \mu^-$.


title: Phenomenological Analysis of Lepton and Quark Mass Matrices

abstract:
  We propose a model that all quark and lepton mass matrices originally have
the same zero texture. Namely their (1,1), (1,3) and (3,1) components are
zeros. For the neutrino mass matrix, we further impose the symmetry between the
second and the third generations. Then the neutrino mass matrix has a maximal
(\nu_\mu) - (\nu_\tau) mixing. Our model is consistent with all the neutrino
oscillation experiments and the experimental data in the quark sector too. The
neutrino mass matrix can also be well incorporated with the seesaw mechanism.


title:
Analysis of one- and two-particle spectra at RHIC based on a
  hydrodynamical model

abstract:
  We calculate the one-particle hadronic spectra and correlation functions of
pions based on a hydrodynamical model. Parameters in the model are so chosen
that the one-particle spectra reproduce experimental results of
$\sqrt{s}=130A$GeV Au+Au collisions at RHIC. Based on the numerical solution,
we discuss the space-time evolution of the fluid. Two-pion correlation
functions are also discussed. Our numerical solution suggests the formation of
the quark-gluon plasma with large volume and low net baryon density.


title: Fermion Mass Hierarchy in 6 dimensional SO(10) SUSY GUT

abstract:
  We suggest simple models which produce the suitable fermion mass hierarchies
and flavor mixing angles based on the supersymmetric SO(10) grand unified
theory in 6 dimensions compactified on a T^2/Z_2 orbifold. The gauge and Higgs
fields propagate in 6 dimensions while ordinal chiral matter fields are
localized in 4 dimensions. We introduce extra vector-like heavy fields in the
extra dimensions. We show three models according to the configurations of
vector-like fields in extra dimensions. The suitable fermion mass hierarchies
and flavor mixings are generated by integrating out these vector-like heavy
fields.


title:
Prospects for the measurement of Bs oscillations with the ATLAS detector
  at LHC

abstract:
  The capabilities of the ATLAS detector to measure the $B_{s}^{0}$
oscillations in proton-proton interactions at the Large Hadron Collider were
evaluated. $B_{s}^{0}$ candidates in the $D_{s}^{-} \pi^{+}$ and $D_{s}^{-}
a_{1}^{+}$ decay modes from semileptonic exclusive events were fully simulated
and reconstructed, using a detailed detector description. The sensitivity and
the expected accuracy for the measurement of the oscillation frequency were
derived from unbinned maximum likelihood amplitude fits as functions of the
integrated luminosity. A detailed treatment of the systematic uncertainties was
performed. The dependence of the measurement sensitivity on various parameters
was also evaluated.


title:
Testable $(g - 2)_{\mu}$ contribution due to a light stabilized radion
  in the Randall-Sundrum model

abstract:
  In this paper we calculate the $(g-2)_{\mu}$ contribution due to a light
stabilized radion using the radion couplings both to the kinetic energy and the
mass term of the muon. We find that the $(g-2)_{\mu}$ contribution due to
radion diverges logarithmically with the cut off. We then show that the bound
from precision EW data on radion phenomenology allows a sizable shift in the
radion mediated muon anomaly that could be detected or tested with the present
precision and certainly with the future precision for measuring muon anomaly.


title:
On the Infrared Exponent for Gluon and Ghost Propagation in Landau Gauge
  QCD

abstract:
  In the covariant description of confinement, one expects the ghost
correlations to be infrared enhanced. Assuming ghost dominance, the long-range
behavior of gluon and ghost correlations in Landau gauge QCD is determined by
one exponent kappa. The gluon propagator is infrared finite (vanishing) for
kappa =1/2 (kappa > 1/2) which is still under debate. Here, we study critical
exponent and coupling for the infrared conformal behavior from the asymptotic
form of the solutions to the Dyson-Schwinger equations in an ultraviolet finite
expansion scheme. The value for kappa is directly related to the ghost-gluon
vertex. Assuming that it is regular in the infrared, one obtains kappa = 0.595.
This value maximizes the critical coupling alpha_c(kappa), yielding alpha_c^max
= (4 Pi/Nc) 0.709 approx. 2.97 for Nc=3. For larger kappa the vertex acquires
an infrared singularity in the gluon momentum, smaller ones imply infrared
singular ghost legs. Variations in alpha_c remain within 5% from kappa = 0.5 to
0.7. Above this range, alpha_c decreases more rapidly with alpha_c -> 0 as
kappa -> 1 which sets the upper bound on kappa.


title:
The Elusiveness of Infrared Critical Exponents in Landau Gauge
  Yang--Mills Theories

abstract:
  We solve a truncated system of coupled Dyson-Schwinger equations for the
gluon and ghost propagators in SU($N_c$) Yang-Mills theories in Faddeev-Popov
quantization on a four-torus. This compact space-time manifold provides an
efficient mean to solve the gluon and ghost Dyson-Schwinger equations without
any angular approximations. We verify that analytically two power-like
solutions in the very far infrared seem possible. However, only one of these
solutions can be matched to a numerical solution for non-vanishing momenta. For
a bare ghost-gluon vertex this implies that the gluon propagator is only weakly
infrared vanishing, $D_{gl}(k^2) \propto (k^2)^{2\kappa -1}$, $\kappa \approx
0.595$, and the ghost propagator is infrared singular, $D_{gh}(k^2) \propto
(k^2)^{-\kappa -1}$. For non-vanishing momenta our solutions are in agreement
with the results of recent SU(2) Monte-Carlo lattice calculations. The running
coupling possesses an infrared fixed point. We obtain $\alpha(0) = 8.92/N_c$
for all gauge groups SU($N_c$). Above one GeV the running coupling rapidly
approaches its perturbative form.


title: Decoupling Solution to SUSY Flavor Problem via Extra Dimensions

abstract:
  We discuss the decoupling solution to SUSY flavor problem in the fat brane
scenario. We present a simple model to yield the decoupling sfermion spectrum
in a five dimensional theory. Sfermion masses are generated by the overlap
between the wave functions of the matter fields and the chiral superfields on
the SUSY breaking brane. Two explicit examples of the spectrum are given.


title: Possible Suppression of Neutron EDM

abstract:
  Employing generalized Schiff's transformation on electric dipole moments
(EDM) in quantum field theory, we show that the chromoelectric EDM lagrangian
density is transformed into the electric EDM term with a new coefficient. Under
the new constraint on the EDM operators, the neutron EDM can be described by a
unique combination of electric EDM $d_f$ and chromoelectric EDM ${\tilde d}_f $
of quarks. If the special relation of
$\displaystyle{d_f={e_f\over{2g_s}}{\tilde d}_f}$ holds, then the neutron EDM
is suppressed significantly.


title:
A CP sensitive asymmetry in the three--body decay stop_1 -> b tau+
  tau-sneutrino

abstract:
  We consider the three--body decay stop_1 -> b tau+ tau-sneutrino and propose
the asymmetry of the tau polarization perpendicular to the decay plane as a CP
sensitive observable. We calculate this asymmetry in the Minimal Supersymmetric
Standard Model taking the parameters mu and A_t complex. In the parameter
domain where the decay stop_1 -> b tau+ tau-sneutrino is important this
asymmetry can go up to 30%. We also estimate the event rates necessary to
observe this asymmetry at 90% CL.


title: Physics Opportunities at mu+mu- Higgs Factories

abstract:
  We update theoretical studies of the physics opportunities presented by
mu+mu- Higgs factories. Interesting measurements of the Standard Model Higgs
decays into {\bar b}b, tau+tau- and WW* may be possible if the Higgs mass is
less than about 160 GeV, as preferred by the precision electroweak data, the
mass range being extended by varying appropriately the beam energy resolution.
A suitable value of the beam energy resolution would also enable the
uncertainty in the b-quark mass to be minimized, facilitating measurements of
parameters in the MSSM at such a first mu+mu- Higgs factory. These measurements
would be sensitive to radiative corrections to the Higgs-fermion-antifermion
decay vertices, which may violate CP. Radiative corrections in the MSSM may
also induce CP violation in Higgs-mass mixing, which can be probed via various
asymmetries measurable using polarized mu+mu- beams. In addition,
Higgs-chargino couplings may be probed at a second mu+mu- Higgs factory.


title:
Light and heavy quark masses, Flavour breaking of chiral condensates,
  Meson weak leptonic decay constants in QCD

abstract:
  We review the present status for the determinations of the light and heavy
quark masses, the light quark chiral condensate and the decay constants of
light and heavy-light (pseudo)scalar mesons from QCD spectral sum rules (QSSR).
Bounds on the light quark running masses at 2 GeV are found to be: 6
MeV<(m_d+m_u)(2)<11 MeV and 71 MeV<m_s(2)<148 MeV. The agreement of the ratio
m_s/(m_u+m_d)=24.2 from pseudoscalar sum rules with the one (24.4\pm 1.5) from
ChPT indicates the consistency of the pseudoscalar sum rule approach. QSSR
predictions from different channels for the light quark running masses leads:
m_s(2)=(117.4\pm 23.4) MeV, (m_d+m_u)(2)=(10.1\pm 1.8) MeV,
(m_d-m_u)(2)=(2.8\pm 0.6) MeV with the corresponding values of the RG invariant
masses. The different QSSR predictions for the heavy quark masses lead to the
running masss values: m_c(m_c)=(1.23\pm 0.05) GeV and m_b(m_b)=(4.24\pm 0.06)
GeV, from which one can extract the scale independent ratio m_b/m_s=48.8\pm
9.8. Runned until M_Z, the b-quark mass becomes: m_b(M_Z)=(2.83\pm 0.04) GeV in
good agreement with the average of direct measurements (2.82\pm 0.63) GeV from
three-jet heavy quark production at LEP, and then supports the QCD running
predictions based on the renormalization group equation. As a result, we have
updated our old predictions of the weak decay constants f_{\pi'(1.3)},
f_{K'(1.46)}, f_{a_0(0.98)}, f_{K^*_0(1.43)}. We obtain from a global fit of
the light (pseudo)scalar and B_s mesons, the flavour breakings of the normal
ordered chiral condensate ratio: <ss>/<uu>=0.66\pm 0.10. The last section is
dedicated to the QSSR determinations of f_{D_{(s)}} and f_{B_{(s)}}.


title: Multi-jet Production in Hadron Collisions

abstract:
  The advent of high-energy hadron colliders necessitates efficient and
accurate computation of multi-jet production processes, both as QCD processes
in their own right and as backgrounds for other physics. The algorithm that
performs these tasks and a brief numerical study of multi-jet processes are
presented.


title: Infrared Exponents and Running Coupling of SU(N) Yang-Mills Theories

abstract:
  We present approximate solutions for the gluon and ghost propagators as well
as the running coupling in Landau gauge Yang-Mills theories. We solve the
corresponding Dyson-Schwinger equations in flat Euclidean space-time without
any angular approximation. This supplements recently obtained results employing
a four-torus, i.e. a compact space-time manifold, as infrared regulator. We
confirm previous findings deduced from an extrapolation with tori of different
volumes: the gluon propagator is weakly vanishing in the infrared and the ghost
propagator is highly singular. For non-vanishing momenta our propagators are in
remarkable agreement with recent lattice calculations.


title:
Pion and kaon role in $\tau$ decays, g_{\mu}-2, the running of
  $\alpha_{QED}$ and the muonium hyperfine splitting

abstract:
  We make use of recent accurate results obtained for the pion and kaon vector
form factors within a chiral unitary approach in order to calculate the decay
widths of the $\tau$ lepton to these mesons and also to evaluate the
contribution of this two mesons to the anomalous magnetic moment of the muon,
the running of the fine structure constant and the muonium hyperfine splitting.


title:
CP violation in supersymmetric models with Hermitian Yukawa couplings
  and A-terms

abstract:
  We analyse the CP violation in supersymmetric models with Hermitian Yukawa
and trilinear couplings. We show that Hermitian Yukawa matrices can be
implemented in supersymmetric models with SU(3) flavor symmetry. An important
feature of this class of models is that the supersymmetric contributions to the
EDM of the neutron and mercury atom are suppressed. In this framework,
epsilon_K can be saturated by a small non--universality of the soft scalar
masses through the gluino contribution. We perform a detailed analysis for the
supersymmetric contributions to epsilon'/epsilon. Although, the gluino
contribution is found to be negligible due to a severe cancellation between LR
and RL mass insertions, the chargino contribution can be significant and
accommodate the experimental results. Additionally, we find that the SUSY
contributions to epsilon'/epsilon from the effective \bar{s}dZ vertex and the
\Delta I =3/2 operators are insignificant. We point out that the standard model
gives the leading contribution to the CP asymmetry in B -> \psi K_S decay,
while the dominant chargino contribution to this asymmetry is < 0.2 . Thus, no
constraint is set on the non--universality of this model by the recent BaBar
and Belle measurements.


title:
Measuring the top-quark Yukawa coupling at hadron colliders via tth,
  h->WW

abstract:
  We study the signal and background for the process tth, h->WW at the LHC and
a 100 TeV VLHC. Signals are studied in two-, three-, and four-lepton final
states. We find a statistical uncertainty in the top-quark Yukawa coupling at
the LHC of 16%, 8%, 12% for m_h = 130, 160, 190 GeV, respectively. The
statistical uncertainty at the VLHC is likely to be negligible in comparison
with the systematic uncertainty.


title: Geometric Origin of CP Violation in an Extra-Dimensional Brane World

abstract:
  The fermion mass hierarchy and finding a predictive mechanism of the flavor
mixing parameters remain two of the least understood puzzles facing particle
physics today. In this work, we demonstrate how the realization of the Dirac
algebra in the presence of two extra spatial dimensions leads to complex
fermion field profiles in the extra dimensions. Dimensionally reducing to four
dimensions leads to complex quark mass matrices in such a fashion that CP
violation necessarily follows. We also present the generalization of the
Randall-Sundrum scenario to the case of a multi-brane, six-dimensional
brane-world and discuss how multi-brane worlds may shed light on the generation
index of the SM matter content.


title: Snowmass 2001: Jet Energy Flow Project

abstract:
  Conventional cone jet algorithms arose from heuristic considerations of LO
hard scattering coupled to independent showering. These algorithms implicitly
assume that the final states of individual events can be mapped onto a unique
set of jets that are in turn associated with a unique set of underlying hard
scattering partons. Thus each final state hadron is assigned to a unique
underlying parton. The Jet Energy Flow (JEF) analysis described here does not
make such assumptions. The final states of individual events are instead
described in terms of flow distributions of hadronic energy. Quantities of
physical interest are constructed from the energy flow distribution summed over
all events. The resulting analysis is less sensitive to higher order
perturbative corrections and the impact of showering and hadronization than the
standard cone algorithms.


title: Mixed Kaon Condensation in CFL Matter

abstract:
  Previous work on high-density QCD suggests that the ground state
configuration in the presence of a non-zero neutrino chemical potential
consists of CFL matter plus a homogenous condensate of neutral and positive
kaons. We consider here the stability of this homogenous configuration toward
the production of a charge-separated mixed phase, and find that the system is
indeed stable against the production of such a heterogenous configuration. We
identify the critical value of the fine structure constant which would allow
for phase separation. We also derive dispersion relations for the low-lying
excitations above the kaon-condensed ground state and discuss their possible
phenomenological implications.


title: Affleck-Dine baryogenesis after thermal brane inflation

abstract:
  We propose a new scenario of Affleck-dine baryogenesis in the context of
theories with large extra dimensions. In this paper we consider baryogenesis
after thermal brane inflation and show how our mechanism works. We specifically
consider models in which supersymmetry is broken at the distant brane.


title: Leptogenesis with Almost Degenerate Majorana Neutrinos

abstract:
  We investigate the leptogenesis with almost degenerate neutrinos, in the
framework of democratic mass matrix, which naturally explains the large mixing
angles for neutrino oscillations as well as quark masses and mixing matrix. We
find that the baryon asymmetry in the present universe is explained via the
decays of right-handed neutrinos produced nonthermally by the inflaton decay.
The model predicts neutrinoless double beta decays accessible in near future
experiments.


title: Affleck-Dine baryogenesis in the local domain

abstract:
  For Affleck-Dine baryogenesis to proceed, there must have been two types of
phase transitions. One is the destabilized-stabilized phase transition of the
flat direction, which is in general induced by the Hubble parameter. The other
is the phase transition related to the A-term, which induces the misalignment
of the relative phase of the flat direction. In the conventional Affleck-Dine
baryogenesis they are supposed to start almost simultaneously. Of course these
phase transitions can take place separately, but the latter must not be later
than the former because the phase transition of the A-term can not produce any
baryon number when there is no condensate of the relative charge.
  In this paper we try to construct models where the original idea of
Affleck-Dine baryogenesis is realized in a different way. We show examples in
which the local domain of the false vacuum with the required condensate is
formed after inflation and collapses in a safe way so that the domain wall
problem is avoided. We also show examples where the phase transition of the
A-term starts before the decay of the condensate. As in the conventional
Affleck-Dine mechanism, the phase transition of the A-term produces baryon
number in the local domain of the condensate. We construct scenarios where our
mechanism produces sufficient baryon asymmetry of the Universe.


title: On Lepton Flavor Violation in Tau Decays

abstract:
  We study lepton flavor violation (LFV) in tau decays induced by heavy
Majorana neutrinos within two models: (I) the Standard Model with additional
right-handed heavy Majorana neutrinos, i.e., a typical seesaw-type model; (II)
the Standard Model with left-handed and right-handed neutral singlets, which
are inspired by certain scenarios of SO(10)models and heterotic superstring
models with E_6 symmetry. We calculate various LFV branching ratios and a T-odd
asymmetry. The seesaw Model I predicts very small branching ratios for LFV
processes in most of the parameter space, although in a very restricted
parameter region it can reach maximal branching ratios Br(tau to mu gamma)
approx 10^-9 and Br(tau to 3mu) approx 10^-10. In contrast, Model II may show
branching ratios Br(tau to e gamma) approx 10^-8 and Br(tau to 3e) < 10^-9,
over a sizable region of the parameter space, large enough to be tested by
experiments in the near future.


title:
Simple analytic evaluation of the integrals in the Gaussian model of
  Bose-Einstein correlations

abstract:
  A generating function for products of Hermite polynomials is used to
significantly simplify the evaluation of the integrals G_m(p,p') occurring in
the Gaussian model of multiple particle production. These integrals are crucial
for studies of multiparticle effects in Bose-Einstein correlations.


title: Leptogenesis in models with multi-Higgs bosons

abstract:
  We study the leptogenesis scenario in models with multi-Higgs doublets. It is
pointed out that the washing-out process through the effective dimension five
interactions, which has not been taken into account seriously in the
conventional scenario, can be effective, and the resultant baryon asymmetry can
be exponentially suppressed. This fact implies new possible scenario where the
observed baryon asymmetry is the remnant of the washed out lepton asymmetry
which was originally much larger than the one in the conventional scenario. Our
new scenario is applicable to some neutrino mass matrix models which predict
too large CP-violating parameter and makes them viable through the washing-out
process.


title: Heavy Quarkonium and QCD Non Relativistic Effective field Theories

abstract:
  QCD nonrelativistic effective field theories (NREFT) are the modern and most
suitable frame to describe heavy quarkonium properties. In this talk I
summarize few relevant concepts and some interesting physical applications of
NREFT.


title: Electroproduction of Charmonia off Nuclei

abstract:
  In a recent publication we have calculated elastic charmonium production in
ep collisions employing realistic charmonia wave functions and dipole cross
sections and have found good agreement with the data in a wide range of s and
Q^2. Using the ingredients from those calculations we calculate exclusive
electroproduction of charmonia off nuclei. Here new effects become important,
(i) color filtering of the c-cbar pair on its trajectory through nuclear
matter, (ii) dependence on the finite lifetime of the c-cbar fluctuation
(coherence length) and (iii) gluon shadowing in a nucleus compared to the one
in a nucleon. Total coherent and incoherent cross sections for C, Cu and Pb as
functions of s and Q^2 are presented together with some differential cross
sections. The results can be tested with future electron-nucleus colliders or
in peripheral collisions of ultrarelativistic heavy ions.


title: The Vector Meson Form Factor Analysis in Light-Front Dynamics

abstract:
  We study the form factors of vector mesons using a covariant fermion field
theory model in $(3+1)$ dimensions. Performing a light-front calculation in the
$q^+ =0$ frame in parallel with a manifestly covariant calculation, we note the
existence of a nonvanishing zero-mode contribution to the light-front current
$J^+$ and find a way of avoiding the zero-mode in the form factor calculations.
Upon choosing the light-front gauge ($\ep^+_{h=\pm}=0$) with circular
polarization and with spin projection $h=\uparrow\downarrow=\pm$, only the
helicity zero to zero matrix element of the plus current receives zero-mode
contributions. Therefore, one can obtain the exact light-front solution of the
form factors using only the valence contribution if only the helicity
components, $(h'h)=(++),(+-)$, and $(+0)$, are used. We also compare our
results obtained from the light-front gauge in the light-front helicity basis
(i.e. $h=\pm,0$) with those obtained from the non-LF gauge in the instant form
linear polarization basis (i.e. $h=x,y,z$) where the zero-mode contributions to
the form factors are unavoidable.


title:
Impact of two mass-scale oscillations on the analysis of atmospheric and
  reactor neutrino data

abstract:
  We study the stability of the results of 3-nu oscillation analysis of
atmospheric and reactor neutrino data under departures of the one--dominant
mass scale approximation. In order to do so we perform the analysis of
atmospheric and reactor neutrino data in terms of three--neutrino oscillations
where the effect of both mass differences is explicitly considered. We study
the allowed parameter space resulting from this analysis as a function of the
mass splitting hierarchy parameter alpha = Delta m^2/Delta M^2 which
parametrizes the departure from the one--dominant mass scale approximation. We
consider schemes with both direct and inverted mass ordering. Our results show
that in the analysis of atmospheric data the derived range of the largest mass
splitting, Delta M^2$, is stable while the allowed ranges of mixing angles
sin^2 theta_{23} and sin^2 theta_{13} are wider than those obtained in the
one--dominant mass scale approximation. Inclusion of the CHOOZ reactor data in
the analysis results into the reduction of the parameter space in particular
for the mixing angles. As a consequence the final allowed ranges of parameters
from the combined analysis are only slightly broader than when obtained in the
one--dominant mass scale approximation.


title: Positively-deflected anomaly mediation

abstract:
  We generalize the so-called ``deflected anomaly mediation'' scenario to the
case where threshold corrections of heavy messengers to the sparticle
squared-masses are positive. A concrete model realizing this scenario is also
presented. The tachyonic slepton problem can be fixed with only a pair of
messengers. The resultant sparticle mass spectrum is quite different from that
in the conventional deflected anomaly mediation scenario, but is similar to the
one in the gauge mediation scenario. The lightest sparticle is mostly B-ino.


title: Recalculation of Pion Compton Scattering in Perturbative QCD

abstract:
  We recalculated pion virtual Compton scattering in perturbative QCD in this
paper. Our calculation avoids some deficiencies in existing literatures, and
treats real Compton scattering as a limit case in which the mass of the virtual
photon equals to zero. Expressions of the hard scattering amplitudes from 10
independent diagrams are given explicitly in the text. By comparing the effects
of different distribution amplitudes on physical observables, we studied the
self-consistence of pQCD calculation of this problem.


title: Associative charm photoproduction with circularly polarized photons

abstract:
  We calculate the asymmetries for the processes $\vec\gamma+\vec p\to
\Lambda_c^+ (\Sigma_c^+)+\bar{D^0}$ and $\vec\gamma+\vec p\to \Lambda_c^+
(\Sigma_c^+)+\bar{D^*}$, induced by circularly polarized photons on a polarized
proton target in the framework of an effective Lagrangian model. We found large
and positive values for the asymmetry induced by the $z-$component of the
proton polarization, in a wide energy region, from threshold up to
$E_\gamma=70$ GeV. In the case of pseudoscalar meson photoproduction, the
predictions are qualitatively model-independent. For $D^*$-photoproduction,
there is a strong dependence of the asymmetries on $N\Lambda_c D(D^*)$-coupling
constants.


title: Helicity conservation and factorization-suppressed charmless B decays

abstract:
  Toward the goal of extracting the weak angle alpha, the decay B^0/B^0-bar to
a_0^{+/-}pi^{-/+} was recently measured. The decay B^0 to a_0^+pi^- is not only
forbidden in the factorization limit of the tree interaction, but also strongly
suppressed for the penguin interaction if short-distance QCD dominates. This
makes extraction of alpha very difficult from a^{+/-}\pi^{-/+}. We examine the
simlar factorization-suppressed decays, in particular, B^0\to b_1^+pi^-. The
prospect of obtaining alpha is even less promising with b_1^{+/-}pi^{-/+}. To
probe how well the short-distance dominance works, we emphasize importance of
testing helicity conservation in the charmless B decays with spins.


title:
Strong, Electroweak Interactions and Their Unification with
  Noncommutative Space-time

abstract:
  Quantum field theories based on noncommutative space-time (NCQFT) have been
extensively studied recently. However no NCQFT model, which can uniquely
describe the strong and electroweak interactions, has been constructed. This
prevents consistent and systematic study of noncommutative space-time. In this
work we construct a NCQFT model based on the trinification gauge group
$SU(3)_C\times SU(3)_L\times SU(3)_R$. A unique feature of this model, that all
matter fields (fermions and Higgses) are assigned to (anti-)fundamental
representations of the factor SU(3) groups, allows us to construct a NCQFT
model for strong and electroweak interactions and their unification without
ambiguities. This model provides an example which allows consistent and
systematic study of noncommutative space-time phenomenology. We also comment on
some related issues regarding extensions to $E_6$ and $U(3)_C\times
U(3)_L\times U(3)_R$ models.


title: Relativistic Kinetic Vertex in Positronium

abstract:
  We derive Spinless Salpeter equation for the positronium using the NRQED
Lagrangian. Consequently, we consider the Spinless Salpeter wavefunction
instead of the Schrodinger wavefunction to show that the NRQED calculation can
be done easier. We also discuss that the singularity of the Spinless Salpeter
wavefunction at the origin is necessary to cancel the ultraviolet divergence in
the NRQED calculations.


title: The Quark Gluon Pion Plasma

abstract:
  While it is commonly believed that there is a {\it direct} transition from
the hadronic to a quark gluon phase at high temperature, it would be
prejudicial to rule out a sequence of dynamically generated intermediate
scales. Using as guide, an effective lagrangian with unconfined gluons and
constituent quarks, interacting with a chiral multiplet, we examine a scenario
in which the system undergoes first-order transitions at $ T_{comp}$, the
compositeness scale of the pions, at $T_{\chi}$, the scale for spontaneous
chiral symmetry breaking, and at $T_c$, the confinement temperature.
  We find that at current energies, it is likely that the formation temperature
of the plasma, $ T_0 < T_{comp} $, and that this is therefore a quark gluon
pion plasma (QGPP) rather than the usual quark gluon plasma (QGP). We propose
some dilepton-related signatures of this scenario.


title: Pion and vacuum properties in the nonlocal NJL model

abstract:
  We formulate the nonlocal NJL model with a momentum dependent constituent
quark mass and calculate pion light cone wave functions of twist 2 and 3. The
leading twist wave function is not asymptotic and agrees well with the new CLEO
data. Normalization conditions for the twist 3 wave functions are used to
calculate the quark condensate. A prescription to calculate the gluon
condensate is proposed. The numerical value of the gluon condensate nicely
agrees with the phenomenological value, whereas the quark condensate is larger
than the phenomenological value of $-(250$ MeV$)^3$. The relation between the
$k_T^2$ moments and mixed condensates are used to estimate the mixed
quark-gluon condensate of dimension 5.


title:
Charm-sea Contribution to High-p_T \psi Production at the Fermilab
  Tevatron

abstract:
  The direct production of $J/\psi(\psi')$ at large transverse momentum, $p_T
\gg M_{J/\psi}$, at the Fermilab Tevatron is revisited. It is found that the
sea-quark initiated processes dominate in the high-$p_T$ region within the
framework of color-singlet model, which is not widely realized. We think this
finding is enlightening for further investigation on the charmonium production
mechanism.


title:
SUSY contributions to the charge asymmetry in K^+- -> pi^+- l^+ l^-
  decays

abstract:
  We analyse the contributions to the charge asymmetry in
$K^\pm\to\pi^\pm\ell^+\ell^-$ decays induced by gluino-exchange diagrams in the
context of supersymmetric models with generic flavour couplings. We show that
sizeable deviations with respect to the Standard Model are possible only under
special circumstances. Within this scenario we set an upper limit of about
$10^{-3}$ for the relative charge asymmetry -- integrated for $M_{\ell^+\ell^-}
> 2 M_\pi$ -- of both muon and electron channels. We also show that this limit
is close to saturating a model-independent upper bound on the charge asymmetry
derived from the present constraints on $\Gamma(K_L \to\pi^0 \ell^+ \ell^-)$.


title:
Bounds on scalar leptoquark and scalar gluon masses from S, T, U in the
  minimal four color symmetry model

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


title: Effects of TeV Scale Gravity on e^+e^- --> W^+ W^-

abstract:
  We study the process e^+e^- --> W^+W^- to probe low-scale gravity at high
energy linear colliders. A characteristic signature of extra-dimensions models
is the forward-backward asymmetry due to the interference of spin-2 graviton
and spin-1 SM gauge boson exchange terms, even when right-polarised electron
beam is used. Our analysis shows that larger than 5% asymmetry is possible at a
linear collider with \sqrt{s}=500 (800) GeV if the mass scale, M_S is smaller
than 2.7 (4.5) TeV. W^- polarisation factors measured with a few percent
accuracy will also be able to put similar limits on M_S.


title:
Hunting the QCD-Odderon in hard diffractive electroproduction of two
  pions

abstract:
  Charge asymmetries in diffractive electroproduction of two mesons are
proportional to the interference of Pomeron and Odderon exchange amplitudes. We
calculate in the framework of QCD and in the Born approximation a
forward-backward charge asymmetry which turns out to be sizable in a
kinematical domain accessible to HERA experiments. We predict a distinctive
dependence of this asymmetry on the invariant mass of the two pions. Testing
this prediction is a crucial step in the discovery of the QCD-Odderon.