title: Measurement of CP violation at a Neutrino Factory

abstract:
  The prospects of measuring CP violation in the leptonic sector using the
intense neutrino beams arising from muon decay in the straight sections of a
muon accumulator ring (the so-called neutrino factory) are discussed.


title:
Progress in perturbative QCD calculations from LEP to Tevatron Run II
  and LHC

abstract:
  I briefly review the progress in perturbative QCD calculations in LEP era and
discuss the prospects for the extension of their accuracy to higher orders.


title: Exponential Quintessence and the End of Acceleration

abstract:
  Recent observations indicate that the universe's expansion has been
accelerating of late. But recent theoretical work has highlighted the
difficulty of squaring acceleration with the underlying assumptions of string
theory, disfavoring most models of quintessence. because they predict eternal
acceleration. We show that one of the simplest and most motivated quintessence
models described by an exponential potential can produce the acceleration
needed to explain the data while also predicting only a finite period of
acceleration, consistent with theoretical paradigms. This model is no more
tuned than the canonical tracking quintessence models.


title: Remarkable Mass Relations in the Electroweak Model

abstract:
  In the electroweak standard model we observe two remarkable empirical mass
relations, m_W + m_B = v/2 and m_W - m_B = e v/2 where m^2_Z = m^2_W + m^2_B, e
is the positron electric charge and v, the strength of the Higgs condensate.


title:
Branching Ratios for $B \to K^* \gamma$ and $B \to \rho \gamma$ Decays
  in Next-to-Leading Order in the Large Eneregy Effective Theory

abstract:
  We calculate the so-called hard spectator corrections in ${\cal O}
(\alpha_s)$ in the leading-twist approximation to the decay widths for $B \to
K^{*} \gamma$ and $B \to \rho \gamma$ decays and their charge conjugates, using
the Large Energy Effective Theory (LEET) techniques. Combined with the hard
vertex and annihilation contributions, they are used to compute the branching
ratios for these decays in the next-to-leading order (NLO) in the strong
coupling $\alpha_s$ and in leading power in $\Lambda_{\rm QCD}/M_B$. These
corrections are found to be large, leading to the inference that the
theoretical branching ratios for the decays $B \to K^* \gamma$ in the LEET
approach can be reconciled with current data only for significantly lower
values of the form factors than their estimates in the QCD sum rule and Lattice
QCD approaches. However, the form factor related uncertainties mostly cancel in
the ratios ${\cal B}(B \to \rho \gamma)/{\cal B}(B \to K^* \gamma)$ and $\Delta
= (\Delta^{+0}+ \Delta^{-0})/2$, where $\Delta^{\pm 0} = \Gamma (B^\pm \to
\rho^\pm \gamma)/
  [2 \Gamma (B^0 (\bar B^0)\to \rho^0 \gamma)] - 1$, and hence their
measurements will provide quantitative information on the standard model
parameters, in particular the ratio of the CKM matrix elements $|
V_{td}/V_{ts}|$ and the inner angle $\alpha$ of the CKM-unitarity triangle. We
also calculate direct CP asymmetries for the decays $B^\pm \to \rho^\pm \gamma$
and $B^0/\bar B^0 \to \rho^0 \gamma$ and find, in conformity with the
observations made in the existing literature, that the hard spectator
contributions significantly reduce the asymmetries arising from the vertex
corrections.


title: Massless neutrino oscillations

abstract:
  Quantum dynamical semigroups provide a general framework for studying the
evolution of open systems. Neutrino propagation both in vacuum and in matter
can be analyzed using these techniques: they allow a consistent treatment of
non-standard, dissipative effects that can alter the pattern of neutrino
oscillations. In particular, initially massless neutrinos can give rise to a
nonvanishing flavour transition probability, involving in addition the Majorana
CP-violating mixing phase.


title:
MS vs. Pole Masses of Gauge Bosons: Electroweak Bosonic Two-Loop
  Corrections

abstract:
  The relationship between MS and pole masses of the vector bosons Z and W is
calculated at the two-loop level in the Standard Model. We only consider the
purely bosonic contributions which represents a gauge invariant subclass of
diagrams. All calculations were performed in the linear $R_\xi$ gauge with
three arbitrary gauge parameters utilizing the method of asymptotic expansions.
The results are presented in analytic form as series in the small parameters
$\sin^2\theta_W$ and mass ratio $m_Z^2/m_H^2$. As a byproduct we obtain the
bosonic two-loop contributions to the renormalization of the weak mixing
parameter $\sin^2\theta_W$ and of the Fermi constant. The running of Fermi
constant will become important at high energy colliders.


title: Rephasing-invariant CP violating parameters with Majorana neutrinos

abstract:
  We analyze the dependence of the squared amplitudes on the
rephasing-invariant CP-violating parameters of the lepton sector, involving
Majorana neutrinos, for various lepton-conserving and lepton-violating
processes. We analyze the conditions under which the CP-violating effects in
such processes vanish, in terms of the minimal set of rephasing invariants,
giving special attention to the dependence on the extra CP-violating parameters
that are due to the Majorana nature of the neutrinos.


title:
Constraining models with vector-like fermions from FCNC in K and B
  physics

abstract:
  In this work, we update the constraints on tree level FCNC couplings in the
framework of a theory with n isosinglet vector-like down quarks. In this
context, we emphasize the sensitivity of the B -> J/psi K_S CP asymmetry to the
presence of new vector-like down quarks. This CP asymmetry, together with the
rare decays B -> X_{s,d} l bar{l} and K -> pi nu bar{nu} are the best options
to further constrain the FCNC tree level couplings or even to point out, in the
near future, the possible presence of vector-like quarks in the low energy
spectrum, as suggested by GUT theories or models of large extra dimensions at
the TeV scale.


title: Particle Horizon and Warped Phenomenology

abstract:
  Giant resonances of gravity Kaluza-Klein modes (with tensor couplings) in
high energy collisions are expected in the Randall-Sundrum orbifold model that
incorporates a plausible solution to the hierarchy problem. When the model is
extended to incorporate an exponentially small 4-D cosmological constant, the
KK spectrum becomes continuous, even in the compactified case. This is due to
the presence of a particle horizon, which provides a way to evade Weinberg's
argument of the need of fine-tuning to get a very small cosmological constant.


title: Improving Bounds on Penguin Pollution in B -> pi pi

abstract:
  In the presence of penguin contributions, the indirect CP asymmetry in B0(t)
-> pi+ pi- measures sin(2\alpha + 2\theta), where 2\theta parametrizes the size
of the penguin ``pollution.'' We derive a new upper bound on |2\theta|,
requiring the measurement of of BR(B+ -> pi+ pi0) and an upper bound on B00
\equiv {1\over 2} [BR(B0 -> pi0 pi0) + BR(B0bar -> pi0 pi0)]. The new bound is
stronger than those previously discussed in the literature. We also present a
lower bound on B00. Current data may suggest that it is not very small, in
which case \theta can be determined using a complete isospin analysis.


title: On simple and subtle properties of neutrinos

abstract:
  Neutrino flavors, light and heavy, are discussed in their interdependence
within the minimal unifying gauge group of SO10. The general situation which
excludes the existence of an {\it exact} symmetry from which {\it exactly}
vanishing light neutrino masses would follow is discussed. {\it Subtle} and
{\it simple} consequences for 'low-low' oscillation phenomena are presented in
a general framework.


title: Light meson masses and mixings

abstract:
  I present a simple discussion of the masses and mixings of the light
pseudoscalar and vector mesons based on a ``$q\bar{q}$'' description of the
effective field theory. The analysis includes $\eta'$(958) from the beginning,
and is largely concerned with structural questions. While the final results are
mostly known, the method gives insight into the general form of the meson mass
matrices and the different character of the mass splittings and mixings in the
pseudoscalar and vector multiplets, and provides a coherent overall picture


title: Controlled nonperturbative dynamics of quantum fields out of equilibrium

abstract:
  We compute the nonequilibrium real-time evolution of an O(N)-symmetric scalar
quantum field theory from a systematic 1/N expansion of the 2PI effective
action to next-to-leading order, which includes scattering and memory effects.
In contrast to the standard 1/N expansion of the 1PI effective action, the
next-to-leading order expansion in presence of a possible expectation value for
the composite operator leads to a bounded time evolution where the truncation
error may be controlled by higher powers in 1/N. We present a detailed
comparison with the leading-order results and determine the range of validity
of standard mean field type approximations.
  We investigate ``quench'' and ``tsunami'' initial conditions frequently used
to mimic idealized far-from-equilibrium pion dynamics in the context of
heavy-ion collisions. For spatially homogeneous initial conditions we find
three generic regimes, characterized by an early-time exponential damping, a
parametrically slow (power-law) behavior at intermediate times, and a late-time
exponential approach to thermal equilibrium. The different time scales are
obtained from a numerical solution of the time-reversal invariant equations in
1+1 dimensions without further approximations. We discuss in detail the
out-of-equilibrium behavior of the nontrivial n-point correlation functions as
well as the evolution of a particle number distribution and inverse slope
parameter.


title: Radiative B Decay in the SM

abstract:
  The experimental and theoretical status of the inclusive decay B -> X_s gamma
is briefly summarized. Results from a very recent theoretical analysis are
reported. An ~11% increase in the SM prediction for BR[ B -> X_s gamma] is
found after replacing m_c^pole/m_b^pole by m_c(mu)/m_b^1S in the NLO QCD
correction. The well-known enhancement of the branching ratio by QCD logarithms
is identified as an effect of m_b-evolution in the top-quark contribution to
the amplitude. This observation helps controlling the residual
scale-dependence. The present prediction for the "total" branching ratio
differs by 1.4 sigma from the experimental world average.


title: Four-point functions in Keldysh basis

abstract:
  The Keldysh three- and four-point functions are related to analytical
continuations of the Imaginary Time amplitudes,in momentum space. The relation
provides an interesting interpretation of the amplitudes that are specific to
the Keldysh basis, and of the Ward Identities they satisfy in QED. The
interpretation carries over to the (perturbative) non-equilibrium case.


title:
Non-zero Fermion Modes Contribution to the Instanton-Induced Electroweak
  Processes at High Energies

abstract:
  We consider instanton-induced high energy processes in an electroweak-type
model. Multi-fermion final states are taken into account in Gauss
approximation. Unlike previous results we calculate nonzero fermion modes
contribution to cross-section by straightforward procedure. This contribution
can be important at energies of sphaleron mass order.


title: On Dynamical Adjustment Mechanisms for the Cosmological Constant

abstract:
  After recalling why dynamical adjustment mechanisms represent a particularly
attractive possibility for solving the cosmological constant problem, we
briefly discuss their intrinsic difficulties as summarized in Weinberg's no-go
theorem. We then comment on some problems of the recently proposed
`self-tuning' mechanism in 4+1 dimensions. Finally, we describe an alternative
approach which uses the time-evolution of the universe to achieve a dynamical
relaxation of the cosmological constant to zero.


title:
Non-zero Quark Modes Contribution to the QCD-Instanton-Induced Deep
  Inelastic Scattering

abstract:
  Instanton-induced deep-inelastic processes are considered. Unlike previous
results we calculate nonzero quark modes contribution.


title: Analytic Perturbation Theory and New Analysis of some QCD observables

abstract:
  Here, we report briefly two topics: 1) The latest version of ``Analytic
Perturbation Theory" (APT) devised recently for the QCD observables both in the
Euclidean and Minkowskian regions. 2) Results of the APT--based calculation for
some physical processes.


title:
Decay-lepton angular asymmetries in polarized e+e- -> t tbar as a
  measure of CP-violating dipole couplings of the top quark

abstract:
  In the presence of an electric dipole coupling of the top quark to a photon,
and an analogous "weak" dipole coupling to the Z, CP violation in the process
e+e- -> t tbar leads to the polarization of the top and anti-top. This
polarization can be analyzed by studying the angular distributions of decay
charged leptons when the top or anti-top decays leptonically. We have obtained
analytic expressions for these distributions when either t or tbar decays
leptonically, including O(alpha_s) QCD corrections in the soft-gluon
approximation. The angular distributions are insensitive to anomalous
interactions in top decay. We study two types of simple CP-violating
polar-angle asymmetries and two azimuthal asymmetries which do not need the
full reconstruction of the t or tbar. We have evaluated independent 90% CL
limits that may be obtained on the real and imaginary parts of the electric and
weak dipole couplings at a linear collider operating at centre-of-mass energy
500 GeV with integrated luminosity 200 inverse fb and also at 1000 GeV with
integrated luminosity 1000 inverse fb. The effect of longitudinal beam
polarization has been included.


title: Quantum Mechanics of Neutrino Oscillations

abstract:
  Subtle problems in the theory of neutrino oscillations in vacuum are
discussed. It is shown that Lorentz invariance implies that in general flavor
neutrinos in oscillation experiments are superpositions of massive neutrinos
with different energies and different momenta. It is argued that a wave packet
description of massive neutrinos is necessary in order to understand the
physics of neutrino oscillations.


title: Nucleon Form Factors in the Covariant Diquark-Quark Model

abstract:
  The nucleon is described as a bound state of a quark and an extended diquark.
Hereby the notion ``diquark'' refers to the modelling of separable correlations
in the two-quark Green's functions. Binding of quarks and diquarks takes place
via an exchange interaction and is therefore related to the Pauli principle for
three-quark states. Fully Poincare covariant nucleon amplitudes are calculated
for free constituent propagators as well as for dressed propagators which
parameterise confinement. The corresponding results for space-like form factors
differ quantitatively but not qualitatively for various ans\"atze for the
propagators. These results do not allow to draw definite conclusions on the
permissibility of different dressing functions. Results for kaon
photoproduction, on the other hand, exclude a whole class of constituent
propagators.


title: Grand Unification in Extra Dimensions and Proton Decay

abstract:
  We discuss baryon and lepton violation in the context of a simple
5-dimensional grand unified model, based on the orbifold S^1/(Z_2 x Z_2').
While gauge and Higgs degrees of freedom live in the bulk, matter is located on
the boundaries of the space-time. We show that proton decay is naturally
suppressed or even forbidden by suitable implementations of the parity
symmetries in the matter sector. The corresponding mechanism does not affect
the SU(5) description of fermion masses also including neutrinos.


title: Transverse Momentum Distributions in B-Decays

abstract:
  We consider transverse momentum distributions in B-decays. The O(alpha_S)
coefficients for soft and collinear logarithms are computed to next-to-leading
accuracy. Resummation of large logarithmic contributions is performed in impact
parameter space within the general formalism for transverese momentum
distributions. It is shown that the shape-function approach as used for the
threshold distribution case cannot be extended to the transverse momentum one.


title: Dynamical Electroweak Breaking and Latticized Extra Dimensions

abstract:
  Using gauge invariant effective Lagrangians in 1+3 dimensions describing the
Standard Model in 1+4 dimensions, we explore dynamical electroweak symmetry
breaking. The Top Quark Seesaw model arises naturally, as well as the full CKM
structure. We include a discussion of effects of warping, and indicate how
other dynamical schemes may also be realized.


title:
Generalized Parton Distributions and Distribution of Partons in the
  Transverse Plane

abstract:
  I discuss the physical interpretation of GPDs in the limit $\xi=0$, where the
$t$ dependence contains information about the distribution of partons in the
transverse plane. GPDs thus allow a simultaneous determination of the
longitudinal momentum and transverse position of partons in the infinite
momentum frame, which also provides a physical interpretation for Ji's angular
momentum sum rule.


title: Determining the Structure of Higgs Couplings at the LHC

abstract:
  Higgs boson production via weak boson fusion at the CERN Large Hadron
Collider has the capability to determine the dominant CP nature of a Higgs
boson, via the tensor structure of its coupling to weak bosons. This
information is contained in the azimuthal angle distribution of the two
outgoing forward tagging jets. The technique is independent of both the Higgs
boson mass and the observed decay channel.


title:
Probing large extra dimensions with spin configuration of top quark pair
  production at the JLC

abstract:
  We explore signatures of large extra dimensions with a polarized
electron/positrn beam at the Joint Linear Collider (JLC). We point out that
spin informations can be useful to study indirect signals for large extra
dimensions due to spin-2 nature of Kaluza-Klein gravitons. The spin
configurations of the top quark pair production at $e^+ e^-$ and $\gamma
\gamma$ collisions provide an unique testing ground to search for effects of
the large extra dimensions. Especially we show the forward-backward asymmetry
is a good probe at $e^+ e^- \to t \bar{t}$ process and we can define a new
asymmetry observable effective for $\gamma \gamma \to t \bar{t}$ process.


title: Charmless Final States and S--D-wave mixing in the $\psi''$

abstract:
  The $\ppp = \psi(3770)$ resonance is expected to be mainly $c \bar
c(1^3D_1)$, but tensor forces and coupling to charmed particle pairs can mix it
with $\pp(2^3S_1)$ and other states. Implications of this mixing for decays of
$\ppp$ to non-charmed final states are discussed. (i) The ratio $\Gamma(\ppp
\to \gamma + \chi_{c2})/ \Gamma(\ppp \to \gamma + \chi_{c0})$ is expected to be
highly suppressed if $\ppp$ is a pure D-wave state, and is enchanced by mixing.
(ii) The expected decay $\pp \to \rho \pi$ and other ``missing'' modes can
appear as corresponding $\ppp$ partial widths, enhanced by a factor depending
on the mixing angle. General arguments then suggest a branching ratio of about
1%, give or take a factor of 2, for charmless hadronic decays of $\ppp$. (iii)
Enhancements can appear in penguin amplitudes in B decays, $B \to K \eta'$
branching ratios, and direct CP-violating asymmetries in $B \to K \pi$ decays.


title:
QED Radiative Corrections to Asymmetries of Elastic ep-scattering in
  Hadronic Variables

abstract:
  Compact analytical formulae for QED radiative corrections in the processes of
elastic $e-p$ scattering are obtained in the case when kinematic variables are
reconstructed from the recoil proton momentum measured. Numerical analysis is
presented under kinematic conditions of current experiments at JLab.


title: Role of Photoproduction in Exotic Meson Searches

abstract:
  We discuss two production mechanisms of the $J^{PC}=1^{-+}$ exotic meson,
hadroproduction, using pion beams and photoproduction.
  We show that the ratio of exotic to non-exotic, in particular the $a_2$,
meson production cross sections is expected to be by a factor of 5 to 10
larger, in photoproduction then in hadroproduction. Furthermore we show that
the low-t photoproduction of exotic meson is enhanced as compared to hadronic
production. This findings support the simple quark picture in which exotic
meson production is predicted to be enhanced when the beam is a virtual $Q\bar
Q$ pair with a spin-1 (photon) rather then with a spin-0 (pion).


title:
Moment-operator expansion for the two-meson, two-photon and
  fermion-antifermion states

abstract:
  A complete set of formulae in terms of the moment-operator expansion is
presented for the two-meson, two-photon and fermion-antifermion states that can
be used in the analysis of scalar (S) and pseudoscalar (P) meson production in
anti-p p and gamma-gamma collisions: anti-p p -> SS, PP, SP and gamma gamma ->
SS, PP, SP.


title: Higgs boson production at Tevatron Run II and LHC

abstract:
  The main production channels of the Higgs boson at hadron colliders are
briefly reviewed and recent developments in the calculation of QCD effects are
discussed.


title:
Ising-like dynamical signatures and the end-point of the QCD transition
  line

abstract:
  An increase in the size of coherent domains in the one component $\Phi^4$
field theory under the influence of a uniformly changing external magnetic
field near the critical end-point $T_{\Phi}=T_c, h_{\Phi}=0$ was proposed
recently as an estimate also for the variation of the chiral correlation length
of QCD near its respective hypothetical end point in the $T_{QCD}-\mu_{QCD}$
plane. The present detailed numerical investigation of the effective model
suggests that passing by the critical QCD end point with realistic rate of
temperature change will trigger large amplitude oscillations in the temporal
variation of the chiral correlation length. A simple mechanism for producing
this phenomenon is suggested.


title: Diffractive parton distributions and the saturation model

abstract:
  We construct diffractive parton distributions in the model of DIS diffraction
in which the diffractive state is formed by the $q\bar{q}$ and $q\bar{q}g$
components. The interaction of such systems with the proton is described by the
dipole cross section given by the saturation model. We find Regge factorization
property with the measured at HERA depenedence on energy. The found parton
distributions are evolved with the DGLAP evolution equations to make a
comparison with the data.


title: Effective field theory for the small-x evolution

abstract:
  The small-x behavior of structure functions in the saturation region is
determined by the non-linear generalization of the BFKL equation. I suggest the
effective field theory for the small-x evolution which solves formally this
equation. The result is the 2+1 functional integral for the structure functions
at small x.


title: Fate of Vector Dominance in the Effective Field Theory

abstract:
  We reveal the full phase structure of the effective field theory for QCD,
based on the hidden local symmetry (HLS) through the one-loop renormalization
group equation including quadratic divergences. We then show that vector
dominance (VD) is not a sacred discipline of the effective field theory but
rather an accidental phenomenon peculiar to three-flavored QCD. In particular,
the chiral symmetry restoration in HLS model takes place in a wide phase
boundary surface, on which the VD is realized nowhere. This suggests that VD
may not be valid for chiral symmetry restoration in hot and/or dense QCD.


title:
Possible detection of relic neutrinos and determination of their mass:
  quantitative analysis

abstract:
  We consider the possibility that a large fraction of the ultrahigh energy
cosmic rays are decay products of Z bosons which were produced in the
scattering of ultrahigh energy cosmic neutrinos on cosmological relic
neutrinos. We compare the observed ultrahigh energy cosmic ray spectrum with
the one predicted in the above Z-burst scenario and determine the mass of the
heaviest relic neutrino as well as the necessary ultrahigh energy cosmic
neutrino flux via a maximum likelihood analysis.


title: Nucleon Form Factors in the Space- and Timelike Regions

abstract:
  Dispersion relations provide a powerful tool to describe the electromagnetic
form factors of the nucleon both in the spacelike and timelike regions with
constraints from unitarity and perturbative QCD. We give a brief introduction
into dispersion theory for nucleon form factors and present results from a
recent form factor analysis. Particular emphasis is given to the form factors
in the timelike region. Furthermore, some recent results for the spacelike form
factors at low momentum transfer from a ChPT calculation by Kubis and Meissner
are discussed.


title: Nonperturbative Contributions in an Analytic Running Coupling of QCD

abstract:
  In the framework of analytic approach to QCD the nonperturbative
contributions in running coupling of strong interaction up to 4-loop order are
obtained in an explicit form. For all $Q>\Lambda$ they are shown to be
represented in the form of an expansion in inverse powers of Euclidean momentum
squared. The expansion coefficients are calculated for different numbers of
active quark flavors $n_f$ and for different number of loops taken into
account. On basis of the stated expansion the effective method for precise
calculation of the analytic running coupling can be developed.


title: CP violation in B decay

abstract:
  We review the physics of CP violation in B decays. After introducing the CKM
matrix and how it causes CP violation, we cover three types of CP violation
that can occur in B decays: CP violation in mixing, CP violation by
mixing-decay interference, and CP violation in decay.


title: Large Electric Dipole Moments of Heavy Leptons

abstract:
  In many models of CP violation, the electric dipole moments (EDMs) of leptons
scale as the cube of the lepton mass. In these models, the EDM of a 100 GeV
heavy lepton would be a billion times greater than that of the muon, and could
be as large as a 0.01 e-fermi. In other models, in which the heavy leptons have
different properties from the lighter generations, a similarly large EDM can be
obtained. A large EDM could dominate the electromagnetic properties of heavy
leptons. The angular distribution and production cross-section of both charged
and neutral heavy leptons with large dipole moments is calculated and
discussed. The interesting possibility that a heavy neutrino with a large EDM
could leave an ionization track in a drift chamber is investigated.


title: Inflation from Rotation

abstract:
  We obtain brane inflation in configurations with Dp and D(p-2) branes which
are far apart and almost perpendicular to each other. Chaotic brane inflation
occurs when the branes can only rotate with the inflaton given by the angle
between the branes. When the branes can also move hybrid brane inflation occurs
where the inflaton is the distance between the branes and the trigger field is
related to the angle. In both models we find a spectral index very close to
one. Both types of inflation require $M_s \sim 10^{16-17} GeV$ with one large
radius of size $1/R \sim 10^{12-15} GeV$.


title: The photon-pion transition form factor for virtual photons

abstract:
  We discuss the photon to meson transition form factor for virtual photons,
which can be measured in e+ e- collisions. We demonstrate that this form factor
is independent of the shape of the meson distribution amplitude over a wide
kinematical range. This leads to a parameter-free prediction of perturbative
QCD to leading twist accuracy, which has a status comparable to the famous
leading-twist prediction of the cross section ratio R.


title: Functional Integral Approach in the Theory of Color Superconductivity

abstract:
  In this series of lectures we present the functional integral method for
studying the superconducting pairing of quarks with the formation of the
diquarks as well as the quark-antiquark pairing in dense QCD. The dynamical
equations for the superconducting order parameters are the nonlinear integral
equations for the composite quantum fields describing the quark-quark or
quark-antiquark systems. These composite fields are the bi-local fields if the
pairing is generated by the gluon exchange while for the instanton induced
pairing interactions they are the local ones. The expressions of the free
energy densities are derived. The binding of three quarks is also discussed.


title: External Inversion, Internal Inversion, and Reflection Invariance

abstract:
  Having in mind that physical systems have different levels of structure we
develop the concept of external, internal and total improper Lorentz
transformation (space inversion and time reversal). A particle obtained from
the ordinary one by the application of internal space inversion or time
reversal is generally a different particle. From this point of view the
intrinsic parity of a nuclear particle (`elementary particle') is in fact the
external intrinsic parity, if we take into account the internal structure of a
particle. We show that non-conservation of the external parity does not
necessarily imply non-invariance of nature under space inversion. The
conventional theory of beta-decay can be corrected by including the internal
degrees of freedom to become invariant under total space inversion, though not
under the external one.


title:
Cosmological constant and spontaneous gauge symmetry breaking: the
  particle physics and cosmology interface charade

abstract:
  We describe one of the remarkable problems of theoretical physics persevering
up to the beginning of the millennium. All gaugetheories with spontaneous gauge
symmetry breaking from the standard model of particle physics with the
electroweak symmetry breaking at the Fermi scale, 246 GeV, up to strings,
supergravity, and the M(embrane)-theory superunification with symmetry breaking
starting near the Planck scale, $10^{19}$ GeV, foresee that the spontaneous
symmetry breakings induce a vacuum energy at least 50 orders of magnitude
larger than the stringent experimental bound $G\Lambda\lesssim 10^{-122}$ on
the value of the cosmological constant $\Lambda$. This fact seems to have a
universal character since it occurs from the Fermi scale up to the Planck one.
It is the vacuum catastrophe.


title: QCD sum rule analysis of V and A current correlators from tau-decay data

abstract:
  2-point correlators of vector and axial currents, obtained from tau-decay
data, are studied within the framework of perturbative QCD and Operator Product
Expansion. Various sum rules, obtained from Borel transformation of the
correlators in complex plane, are used to separate the contributions of
different operators from each other. The analysis confirms the Q^2-dependence
of the correlators in the space-like region, predicted by QCD+OPE. However the
operator values are found to be in certain disagreement with the estimations,
obtained from other data.


title: Propagation of ultrahigh energy cosmic rays and compact sources

abstract:
  The clustering of ultrahigh energy (>10^{20} eV) cosmic rays (UHECR) suggests
that they might be emitted by compact sources. Statistical analysis (Dubovsky
et al., 2000) estimated the source density. We extend their analysis to give
also the confidence intervals (CI) for the source density using a.) no
assumptions on the relationship between clustered and unclustered events; b.)
nontrivial distributions for the source luminosities and energies; c.) the
energy dependence of the propagation. We also determine the probability that a
proton created at a distance r with energy E arrives at earth above a threshold
E_c. Using this function one can determine the observed spectrum just by one
numerical integration for any injection spectrum. The observed 14 UHECR events
above 10^{20} eV with one doublet gives for the source densities
180_{-165}^{+2730}\cdot 10^{-3} Mpc^{-3} (on the 68% confidence level).


title: Ultrahigh energy cosmic rays as a Grand Unification signal

abstract:
  We analyze the spectrum of the ultrahigh energy (above \approx 10^{9} GeV)
cosmic rays. With a maximum likelihood analysis we show that the observed
spectrum is consistent with the decay of extragalactic GUT scale particles. The
predicted mass for these superheavy particles is m_X=10^b GeV, where
b=14.6_{-1.7}^{+1.6}.


title:
The Implementation of the Minimal Supersymmetric Standard Model in
  FeynArts and FormCalc

abstract:
  We describe the implementation of the MSSM in the diagram generator FeynArts
and the calculational tool FormCalc. This extension allows to perform loop
calculations of MSSM processes almost fully automatically. The actual
implementation has two aspects: The MSSM Feynman rules are specified in a new
model file for FeynArts. The computation of the parameters in the MSSM
Lagrangian from the input parameters is realized as a Fortran subroutine in the
framework of FormCalc. The model file does not depend on the latter, however,
and can be used even if one does not want to continue the calculation with
FormCalc. The Feynman rules have been entered in a very generic way to allow
e.g. scenarios with complex parameters, and have been tested extensively by
reproducing known results for several non-trivial scattering processes.


title:
An effective lagrangian description of charged Higgs decays H^+ -> Wg,
  WZ and Wh

abstract:
  Charged Higgs decays are discussed within an effective lagrangian extension
of the two-higgs doublet model, assuming new physics appearing in the Higgs
sector of this model. Low energy constrains are used to imposse bounds on
certain dimension -six operators that describe the modified charged Higgs
interactions. These bounds are used then to study the decays H^+ -> Wg, WZ and
Wh, which can have branching ratios of order 10^-5, 10^-1 and O(1),
respectively; thse modes are thus sensitive probes of the symmetries of the
Higgs sector that could be tested at future colliders.


title: Combining LSND and Atmospheric Anomalies in a Three-Neutrino Picture

abstract:
  We investigate the three-neutrino mixing scheme for solving the atmospheric
and LSND anomalies. We find the region in the parameter space that provides a
good fit to the LSND and the SK atmospheric data, taking into account the CHOOZ
constraint. We demonstrate that the goodness of this fit is comparable to that
of the conventional fit to the solar and atmospheric data. Large values of the
LSND angle are favoured and $\sin^2(2\theta_{\rm LSND})$ can be as high as 0.1.
This can have important effects on the atmospheric electron neutrino ratios as
well as on down-going multi-GeV muon neutrino ratios. We examine the
possibility of distinguishing this scheme from the conventional one at the long
baseline experiments. We find that the number of electron neutrino events
observed at the CERN to Gran Sasso experiment may lead us to identify the
scheme, and hence the mass pattern of neutrinos.


title:
Evolution of flat universe with a cosmological term in modified
  Relativistic Theory of Gravitation as a scalar-tensor extension of General
  Relativity

abstract:
  We consider the dynamics of tensor and scalar gravitational fields in the
Relativistic Theory of Gravitation with the Minkowskian vacuum metric and
generalize the formulation to the massless graviton. The potential of scalar
field is determined in the presence of cosmological term under clear physical
motivations. We find cosmological inflationary solutions and analyze conditions
providing the transition to the regime of hot expanding universe.


title: Spontaneous R-Parity violation bounds

abstract:
  We investigate bounds from tree-level and one-loop processes in generic
supersymmetric models with spontaneous R-parity breaking in the superpotential.
We analyse the bounds from a general point of view. The bounds are applicable
both for all models with spontaneous R-parity violation and for explicit
bilinear R-parity violation based on general lepton-chargino and
neutrino-neutralino mixings. We find constraints from semileptonic B, D and K
decays, leptonic decays of the mu and tau, electric dipole moments, as well as
bounds for the anomalous magnetic moment of the muon.


title:
Dispersive Techniques for $\alpha_s$, $R_{had}$ and Instability of the
  Perturbative Vacuum

abstract:
  Recent dispersive techniques developed by us are applied to discuss three
problems: 1. A long standing discrepan-cy between the measurements of $R(s)$
for $\sqrt{s} = (5\div 7.5)GeV$ by Crystal Ball and MARK I has been analyzed
and its consequences analyzed for the number of contributing quarks. 2. Noting
that the perturbative $\alpha_s$ has the wrong analyticity, analytic models
consistent with asymptotic freedom (AF) and confinement have been constructed
and applied to discuss $\tau$ decay. 3. It is shown that AF leads to a wrong
sign for $\im\big(\alpha(s)\big)$ which signals an instability of the
perturbative QCD vacuum.


title: The Inverse Problem: Extracting Time-Like from Space-Like Data

abstract:
  A practical strategy is presented and successfully implemented to determine
form factors in the time-like but unphysical (below threshold) region using
dispersion relations, in a model independent way without any bias towards
expected resonances. Space and time-like data have been employed along with a
regularization scheme to unfold and solve the integral equations. Remarkably,
resonance structures with peaks for the $\rho(770)$, $\rho'(1600)$ and a
structure near the $N\bar N$ threshold are automatically generated. The $\Phi$
peak is invisible thus refuting suggestions about any sizeable $s\bar s$
content in the nucleon.


title: Highlights in the analysis of exclusive B decays

abstract:
  I briefly describe recent developments in the theoretical analysis of non
leptonic and semileptonic B decays. For non leptonic transitions, I focus on
factorization, from the naive formulation to the most recent achievements. As
for semileptonic decays, I mainly consider B transitions to excited charmed
states.


title:
Chiral Perturbation in the Hidden Local Symmetry and Vector
  Manifestation of Chiral Symmetry

abstract:
  In this talk I summarize our recent works on the chiral phase transition in
the large flavor QCD studied by the hidden local symmetry (HLS). Bare
parameters in the HLS are determined by matching the HLS with the underlying
QCD at the matching scale through the Wilsonian matching. This leads to the
vector manifestation of the Wigner realization of the chiral symmetry in which
the symmetry is restored by the massless degenerate pion (and its flavor
partners) and rho meson (and its flavor partners) as the chiral partner.


title: Analytical description of muon distributions at large depths

abstract:
  The analytical expression for integral energy spectra and zenith angle
distributions of atmospheric muons at large depths is derived. Fluctuations of
muon energy losses are described using the parametrized correction factor. The
fitting formula for the sea level muon spectrum at different zenith angles for
spherical atmosphere is proposed. The concrete calculations for pure water are
presented.


title: Precise parametrizations of muon energy losses in water

abstract:
  The description of muon propagation through large depths of matter, based on
a concept of the correction factor, is proposed. The results of Monte-Carlo
calculations of this correction factor are presented. The parametrizations for
continuous energy loss coefficients, valid in the broad interval of muon
energies, and for the correction factor are given. The concrete calculations
for pure water are presented.


title: MUM: flexible precise algorithm for the muon propagation

abstract:
  We present a new muon propagation Monte Carlo FORTRAN code MUM (MUons+Medium)
which possesses some advantages over analogous codes presently in use. The most
important features of the algorithm are described. Data on the test for
algorithm accuracy are presented. Contributions of different sources to the
resulting error of simulation are considered. Selected results obtained with
MUM are given and compared with ones from other codes.


title: Hard Exclusive Reactions and the Structure of Hadrons

abstract:
  We outline in detail the properties of generalized parton distributions
(GPDs), which contain new information on the structure of the nucleon and which
enter the description of hard exclusive reactions. We highlight the physics
content of the GPDs and discuss the quark GPDs in the large $N_c$ limit and
within the context of the chiral quark-soliton model. Guided by this physics,
we then present a general parametrization for these GPDs. Subsequently we
discuss how these GPDs enter in a wide variety of hard electroproduction
processes and how they can be accessed from them. We consider in detail deeply
virtual Compton scattering and the hard electroproduction of mesons. We
identify a list of key observables which are sensitive to the various nucleon
structure aspects contained in the GPDs and which can be addressed by present
and future experiments.


title: Novel Effects in B System: From SUSY to Intrinsic Charm

abstract:
  We have entered the era of BaBar, Belle and Tevatron competition; with new
hardware and unprecedented statistics reach, we must be prepared for
discovering new phenomena. While these unfoldings could be coming from new
physics, it could also come about as new tricks from old. We illustrate new
physics with generic $bsg$ dipole and its impact on $\sin2\Phi_{\phi K_S}$, and
at a deeper level, the marriage of flavor symmetries and SUSY, which could
impact on $B_d$, $B_s$ and $D^0$ mixings and CP violation, and possibility of a
light $\widetilde{sb}$ squark. As simple unfolding, we touch upon charmless $B
\to$ baryonic pair decay, with or without an associated $\eta^\prime/\gamma$.
We close with the possible spectacular signal of $B\to J/\psi D\pi$ as a
flabbergasting new trick from nonperturbative QCD: intrinsic charm of $B$.


title: Atmospheric neutrino flux and muon data

abstract:
  We present a new one-dimensional calculation of low and intermediate energy
atmospheric muon and neutrino fluxes, using up-to-date data on primary cosmic
rays and hadronic interactions. The existing agreement between calculated muon
fluxes and the data of the CAPRICE 94 muon experiment provides an evidence in
favor of the validity of our description of hadronic interactions and shower
development. This also supports our neutrino fluxes which are essentially lower
than those used for the standard analyses of the sub-GeV and multi-GeV neutrino
induced events in underground detectors.


title: Atmospheric proton and neutron spectra at energies above 1 GeV

abstract:
  We discuss an effective numerical method for solving the transport equations
for cosmic ray nucleons in the atmosphere. It is demonstrated that the nucleon
attenuation lengths are strongly energy and depth dependent due to the
non-power-law behavior of the primary spectrum, growth of the total inelastic
cross sections with energy, and scaling violation in the nucleon-nucleus
interactions. The numerical results are compared with the available
experimental data.


title:
Analyses of multiplicity distributions at Tevatron by a two-component
  stochastic model --- No leading particle effect in E735 Experiment ---

abstract:
  Comparisons of multiplicity distributions at sqrt(s) = 1.8 TeV (E735
Experiment and CDF Collaboration) with our predictions by a two-component
stochastic model have been made. This stochastic model is described by the
pure-birth and Poisson processes. It is found that there are discrepancies
among data at the CERN Sp-bar-pS collider and those at the Tevatron collider.
The latter data by E735 do not contain the leading particle effect described by
the Poisson process, providing that the view of the two-component stochastic
model is correct. The data by CDF contain small leading particle effect. The
reason is probably attributed to the correction made by E735, which is
necessary to make the data of the full phase space from the restricted rapidity
|eta|<3.25.


title: Quarkonium Feed-Down and Sequential Suppression

abstract:
  About 40-50 % of the quarkonium ground states J/psi(1S) and Upsilon(1S)
produced in hadronic collisions originate from the decay of higher excitations.
In a hot medium, these higher states are dissociated at lower temperatures than
the more tightly bound ground states, leading to a sequential suppression
pattern. Using new finite temperature lattice results, we specify the in-medium
potential between heavy quarks and determine the dissociation points of
different quarkonium states. On the basis of recent CDF data on bottomonium
production, we then obtain first predictions for sequential Upsilon suppression
in nuclear collisions.


title: Physics at Large Rapidities in $\gamma^*\gamma^* \to$ Hadrons at LEP2

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


title: Systematic Study of the Single Instanton Approximation in QCD

abstract:
  The Single-instanton approximation (SIA) is often used to evaluate
analytically instanton contribution to euclidean correlation functions in QCD,
at small distances. We discuss how this approximation can be consistently
derived from the theory of the instanton ensemble and give precise definitions
to a number of different "effective masses", generalizing the parameter $m*$,
which was introduced long ago to account for the collective contribution of the
whole ensemble.
  We test numerically the range of applicability of the SIA for different
quantities. Furthermore, we determine all the effective masses (for random and
interacting instanton liquid models) as well as from phenomenology, and discuss
to what extent those are universal.


title: Electroweak radiative corrections:Towards a full two-loop analysis

abstract:
  In calculating electroweak radiative corrections at two-loop level, one
encounters Feynman graphs with several different masses on the internal
propagators and on the external legs, which lead to complicated scalar
functions. We describe a general analytic-numerical reduction scheme for
evaluating any two-loop diagrams with general kinematics and general
renormalizable interactions, whereby ten basic functions form a complete set
after tensor reduction. We illustrate this scheme by applying it to two- and
three-point functions. We discuss the treatment of infrared singularities
within this numerical approach.


title:
Ineffective Supersymmetry: Electroweak Symmetry Breaking from Extra
  Dimensions

abstract:
  Recently, a mechanism for electroweak symmetry breaking (EWSB) was discussed,
in which the scale of EWSB is set by the scale of an additional dimension R ~
Tev^-1. The mechanism involves supersymmetry, but broken in such a fashion that
high (four-dimensional) momentum loops are cut off by the finite size of the
radius. In a Kaluza-Klein decomposition, a hard cutoff seems to give a strong
cutoff dependence, while summing the entire tower is not only cutoff
insensitive, but actually finite. Such behavior is easily understood in a
formulation that respects five-dimensional locality. Finally, we note that
certain models of this type naturally give operators which can ``fake'' the
presence of a light Higgs in precision electroweak observables.


title: Constraining Quark-Hadron Duality at Large-Nc

abstract:
  Quark-meson duality for two-point functions of vector and axial-vector QCD
currents is investigated in the large-Nc approximation. We find that the joint
constraints of duality and chiral symmetry imply degeneracy of excited vector
and axial-vector mesons in the large-Nc limit. We compare model-independent
constraints with expectations based on the Veneziano-Lovelace-Shapiro string
model. Several models of duality are constructed, and phenomenological
implications are discussed.


title: Chargino Contributions to Epsilon and Epsilon-Prime

abstract:
  We analyze the chargino contributions to the K-\bar K mixing and
epsilon-prime in the mass insertion approximation and derive the corresponding
bounds on the mass insertion parameters. We find that the chargino
contributions can significantly enlarge the regions of the parameter space
where CP violation can be fully supersymmetric. In principle, the observed
values of epsilon and epsilon-prime may be entirely due to the chargino --
up-squark loops.


title:
Resummation of the hadronic tau decay width with the modified Borel
  transform method

abstract:
  A modified Borel transform of the Adler function is used to resum the
hadronic tau decay width ratio. In contrast to the ordinary Borel transform,
the integrand of the Borel integral is renormalization--scale invariant. We use
an ansatz which explicitly accounts for the structure of the leading infrared
renormalon. Further, we use judiciously chosen conformal transformations for
the Borel variable, in order to map sufficiently away from the origin the other
ultraviolet and infrared renormalon singularities. In addition, we apply Pade
approximants for the corresponding truncated perturbation series of the
modified Borel transform, in order to further accelerate the convergence.
Comparing the results with the presently available experimental data on the tau
hadronic decay width ratio, we obtain $\alpha_s(M^z) = 0.1192 +- 0.0007_{exp.}
+- 0.0010_{EW+CKM} +- 0.0009_{th.} +- 0.0003_{evol.}$. These predictions
virtually agree with those of our previous resummations where we used ordinary
Borel transforms instead.


title:
Precision Determination of the Pion Form Factor and Calculation of the
  Muon $g-2$

abstract:
  We perform a new calculation of the hadronic contributions, $a({\rm
Hadronic})$ to the anomalous magnetic moment of the muon, $a_\mu$. For the low
energy contributions of order $\alpha^2$ we carry over an analysis of the pion
form factor $F_\pi(t)$ using recent data both on $e^+e^-\to\pi^+\pi^-$ and
$\tau^+\to \bar{\nu}_\tau \pi^+\pi^0$. In this analysis we take into account
that the phase of the form factor is equal to that of $\pi\pi$ scattering. This
allows us to profit fully from analyticity properties so we can use also
experimental information on $F_\pi(t)$ at spacelike $t$. At higher energy we
use QCD to supplement experimental data, including the recent measurements of
$e^+e^-\to {\rm hadrons}$ both around 1 GeV and near the $\bar{c}c$ threshold.
This yields a precise determination of the $O(\alpha^2)$ and
$O(\alpha^2)+O(\alpha^3)$ hadronic part of the photon vacuum polarization
pieces, $$10^{11}\times a^{(2)}({\rm h.v.p.})=6 909\pm64;\quad 10^{11}\times
a^{(2+3)}({\rm h.v.p.})=7 002\pm66$$ As byproducts we also get the masses and
widths of the $\rho^0, \rho^+$, and very accurate values for the charge radius
and second coefficient of the pion. Adding the remaining order $\alpha^3$
hadronic contributions we find $$10^{11}\times a^{\rm theory}(\hbox{Hadronic})=
6 993\pm69\quad(e^+e^- + \tau + {\rm spacel.})$$ The figures given are obtained
including $\tau$ decay data. This is to be compared with the recent
experimental value, $$10^{11}\times a^{\rm exp.}(\hbox{Hadronic})=7
174\pm150.$$


title: Analytic Quantization of the QCD String

abstract:
  We perform an analytic semi-classical quantization of the straight QCD string
with one end fixed and a massless quark on the other, in the limits of orbital
and radial dominant motion. We compare our results to the exact numerical
semi-classical quantization. We observe that the numerical semi-classical
quantization agrees well with our exact numerical canonical quantization.


title: Distinguishing Higgs models in H -> b b-bar / H -> tau^+ tau^-

abstract:
  We analyze the ratio of branching ratios R=BR(H->b b-bar)/BR(H->tau^+ tau^-)
of Higgs boson decays as a discriminant quantity between supersymmetric and
non-supersymmetric models. This ratio receives large renormalization-scheme
independent radiative corrections in supersymmetric models at large \tan\beta,
which are absent in the Standard Model or Two-Higgs-doublet models. These
corrections are insensitive to the supersymmetric mass scale. A detailed
analysis in the effective Lagrangian approach shows that, with a measurement of
+-21% accuracy, the Large Hadron Collider can discriminate between models if
the CP-odd Higgs boson mass is below 900 GeV. An e+e- Linear Collider at 500
GeV center of mass energy can discriminate supersymmetric models up to a CP-odd
Higgs mass of ~ 1.8 TeV.


title:
Domain-like Structures in the QCD Vacuum, Confinement and Chiral
  Symmetry Breaking

abstract:
  We discuss how the inclusion of singular gauge fields in the partition
function for QCD can lead to a domain-like picture for the QCD vacuum by virtue
of specific conditions on quantum fluctuations at the singularities. With a
simplified model of hyperspherical domain regions with interiors of constant
field strength we calculate the basic parameters of the QCD vacuum, the gluon
condensate, topological susceptibility, string constant and quark condensate,
and briefly discuss confinement of dynamical quarks and gluons.


title:
Indication for Light Sneutrinos and Gauginos from Precision Electroweak
  Data

abstract:
  The present Standard Model fit of precision data has a low confidence level,
and is characterized by a few inconsistencies. We look for supersymmetric
effects that could improve the agreement among the electroweak precision
measurements and with the direct lower bound on the Higgs mass. We find that
this is the case particularly if the 3.6 sigma discrepancy between sin^2
theta_eff from leptonic and hadronic asymmetries is finally settled more on the
side of the leptonic ones. After the inclusion of all experimental constraints,
our analysis selects light sneutrinos, with masses in the range 55-80 GeV, and
charged sleptons with masses just above their experimental limit, possibly with
additional effects from light gauginos. The phenomenological implications of
this scenario are discussed.


title: Phase Transitions During Inflation and Chemically Inhomogeneous Universe

abstract:
  Several models of baryo(lepto)-genesis that give rise to large
inhomogeneities in the composition of the universe are presented. In
particular, a variation of primordial abundances of light elements by the
factor 2-5 at large distances is predicted. A cosmological model of baryonic
island is considered. Creation of domains with very large baryon and antibaryon
number is described. Such domains mostly collapsed into primordial black holes
that could be the dominant part of (non-standard) cosmological cold dark matter
with a widely dispersed mass spectrum. A non-collapsed part of these bubbles
might make clouds of matter or antimatter with an enriched abundances of
metals. A mechanism for creation of such exotic objects can be realized by
mixed order phase transitions induced by the inflaton field.


title: Multiplicative renormalizability of gluon and ghost propagators in QCD

abstract:
  We reformulate the coupled set of continuum equations for the renormalized
gluon and ghost propagators in QCD, such that the multiplicative
renormalizability of the solutions is manifest, independently of the specific
form of full vertices and renormalization constants. In the Landau gauge, the
equations are free of renormalization constants, and the renormalization point
dependence enters only through the renormalized coupling and the renormalized
propagator functions. The structure of the equations enables us to devise novel
truncations with solutions that are multiplicatively renormalizable and agree
with the leading order perturbative results. We show that, for infrared power
law behaved propagators, the leading infrared behavior of the gluon equation is
not solely determined by the ghost loop, as concluded in previous studies, but
that the gluon loop, the three-gluon loop, the four-gluon loop, and even
massless quarks also contribute to the infrared analysis. In our new Landau
gauge truncation, the combination of gluon and ghost loop contributions seems
to reject infrared power law solutions, but massless quark loops illustrate how
additional contributions to the gluon vacuum polarization could reinstate these
solutions. Moreover, a schematic study of the three-gluon and four-gluon loops
shows that they too need to be considered in more detail before a definite
conclusion about the existence of infrared power behaved gluon and ghost
propagators can be reached.


title: Complex poles and oscillatory screened potential in QED plasmas

abstract:
  We discuss the mechanism for the oscillatory behavior of the static
interparticle potential in a degenerate electron plasma. This behavior,
observed in metallic alloys, is commonly referred to as 'Friedel oscillations',
and its origin associated to the Kohn singularity. We show that, although this
interpretation is adequate for large distances, the oscillations at short
distances originate from a complex pole of the in-medium photon propagator in
the complex q-plane, which exists aside the (purely imaginary) Debye pole. Such
short-range oscillations can be physically discriminated if they remain at
temperatures for which Friedel oscillations have already disappeared. This is
suggested by finite temperature calculations in non-electromagnetic plasma
models showing a similar pole structure.


title:
Soft Supersymmetry Breaking due to Dimensional Reduction over
  Non-Symmetric Coset Spaces

abstract:
  A ten-dimensional supersymmetric $E_8$ gauge theory is compactified over
six-dimensional coset spaces, establishing further our earlier conjecture that
the resulting four dimensional theory is a softly broken supersymmetric gauge
theory in the case that the used coset space is non-symmetric. The specific
non-symmetric six-dimensional spaces examined in the present study are
$Sp(4)/(SU(2) \times U(1))_{non-max.}$ and $ SU(3)/U(1) \times U(1)$.


title:
Resonance estimates of O(p^6) low-energy constants and QCD
  short-distance constraints

abstract:
  Starting from the study of the low-energy and high-energy behaviours of the
QCD three-point functions <VAP>, <VVP> and <AAP>, several O(p^6) low-energy
constants of the chiral Lagrangian are evaluated within the framework of the
lowest meson dominance (LMD) approximation to the large-N_C limit of QCD. In
certain cases, values that differ substantially from estimates based on a
resonance Lagrangian are obtained. It is pointed out that the differences arise
through the fact that QCD short-distance constraints are in general not
correctly taken into account in the approaches using resonance Lagrangians. We
discuss the implications of our results for the O(p^6) counterterm
contributions to the vector form factor of the pion and to the decay \pi -> e
\nu_e \gamma, and for the pion-photon-photon transition form factor.


title: Monopole Problem and Extensions of Supersymmetric Hybrid Inflation

abstract:
  We discuss, in the context of a concrete supersymmetric grand unified model
based on the Pati-Salam gauge group SU(4)_c x SU(2)_L x SU(2)_R, two "natural"
extensions of supersymmetric hybrid inflation, which avoid the cosmological
disaster encountered in the standard hybrid inflationary scenario from the
overproduction of monopoles at the end of inflation. Successful "reheating"
which satisfies the gravitino constraint takes place after the end of
inflation. Also, adequate baryogenesis via a primordial leptogenesis occurs
consistently with the solar and atmospheric neutrino oscillation data as well
as the SU(4)_c symmetry. Moreover, the mu-term is generated via a Peccei-Quinn
symmetry and proton is practically stable.


title: Lorentz Invariance and Origin of Symmetries

abstract:
  In this letter we reconsider the role of Lorentz invariance in the dynamical
generation of the observed internal symmetries. We argue that, generally,
Lorentz invariance can only be imposed in the sense that all Lorentz
non-invariant effects caused by the spontaneous breakdown of Lorentz symmetry
are physically unobservable. Remarkably, the application of this principle to
the most general relativistically invariant Lagrangian, with arbitrary
couplings for all the fields involved, leads by itself to the appearance of a
symmetry and, what is more, to the massless vector fields gauging this symmetry
in both Abelian and non-Abelian cases. In contrast, purely global symmetries
are only generated as accidental consequences of the gauge symmetry.


title:
On the Scaling Violations of Diffractive Structure Functions: Operator
  Approach

abstract:
  A quantum field theoretic treatment of inclusive deep-inelastic diffractive
scattering is given. The process can be described in the general framework of
non-forward scattering processes using the light-cone expansion in the
generalized Bjorken region. Evolution equations of the diffractive hadronic
matrix elements are derived at the level of the twist-2 contributions and are
compared to those of inclusive deep-inelastic forward scattering (DIS). The
diffractive parton densities are obtained as projections of two-variable parton
distributions. We also comment on the higher twist contributions in the
light-cone expansion.


title: Electrostatics of Pagels-Tomboulis effective model

abstract:
  Long time ago Pagels and Tomboulis have proposed a model for the
nonperturbative gluodynamics which in the Abelian sector can be reduced to a
strongly nonlinear electrodynamics. In the present paper we investigate
Abelian, static solutions with external charges in that model. Nonzero total
charge implies that the corresponding field has infinite energy due to slow
fall off at large distances. For a pair of opposite charges the energy is
finite -- it grows like $R^{\alpha}$, $0<\alpha <1$ with the distance $R$
between the charges.


title: Workshop Summary

abstract:
  Recent progress in understanding the physics of B mesons and of CP violation,
as presented to this Workshop, is put in historical perspective and summarized.


title:
Non-factorization effects in heavy mesons and determination of |V_{ub}|
  from inclusive semileptonic B decays

abstract:
  The effects of spectator light quark in decays of heavy mesons are
considered, which vanish in the limit of factorization of matrix elements of
four-quark operators over the mesons. These effects include the difference of
the total widths as well as of the semileptonic decay rates between the D^0 and
D_s mesons and also a contribution to inclusive semileptonic decay rates of B^0
and B^\pm into the channel X_u l nu related to determination of the weak mixing
parameter V_{ub}. If the observed difference of the lifetimes between D_s and
D^0 mesons is attributed to non-factorizable terms, such terms can naturally
give rise to a significant difference in inclusive semileptonic decay rates of
these mesons, and to a light-flavor dependent contribution to decays B -> X_u l
nu. The latter contribution affects mostly the upper part of the inclusive
spectrum of the invariant mass of the lepton pair, and may significantly exceed
the previously claimed in the literature theoretical uncertainty in
determination of |V_{ub}|^2 from that part of the spectrum.


title: Experimental Status Report on Vector Meson Spectroscopy

abstract:
  The experimental status of light vector meson spectroscopy is discussed. The
last results of $e^+e^-$ experiments obtained at the VEPP-2M collider in
Novosibirsk are described and the comparison with the old data in the mass
region from 1 GeV to 2.5 GeV is performed.


title: MSW effect for large mixing angles

abstract:
  The traditional physical description of neutrino flavor conversion in the Sun
focuses on the notion of resonance. However, the resonance picture is valid
only in the limit of small mixing angles theta. For large values of theta, the
resonance picture leads to seemingly paradoxical results. This observation is
important for understanding the physics of neutrino flavor conversion in the
Sun, since the latest solar neutrino data seems to prefer large mixing angles.
Here we review the basic arguments and in particular show that the resonance
does not in general coincide with either the point of maximal violation of
adiabaticity in the nonadiabatic case or the point of maximal flavor conversion
in the adiabatic case. We also discuss a modified adiabaticity criterion.


title: Space structure of hadrons in elastic scattering at high energy

abstract:
  We have confirmed and complemented previous conclusions from studies of the
impact parameter profiles, relative to $pp$ and $\bar pp$ scattering, using a
generalized eikonalized amplitude. In particular, the transition from the grey
to the black disk is followed, when the energy increases beyond $\sim 3$ TeV
and for the inelastic process, by a black ring surrounding the antishadow
scattering mode at the center. The ranges of hadronic forces responsible for
the elastic and inelastic processes are estimated by means of root-mean-squares
of the impact parameter. Predictions at the LHC energy are explicitly given.
The effect of eikonalization is discussed.


title:
4D Constructions of Supersymmetric Extra Dimensions and Gaugino
  Mediation

abstract:
  We present 4D gauge theories which at low energies coincide with higher
dimensional supersymmetric (SUSY) gauge theories on a transverse lattice. We
show that in the simplest case of pure 5D SUSY Yang-Mills there is an
enhancement of SUSY in the continuum limit without fine-tuning. This result no
longer holds in the presence of matter fields, in which case fine-tuning is
necessary to ensure higher dimensional Lorentz invariance and supersymmetry. We
use this construction to generate 4D models which mimic gaugino mediation of
SUSY breaking. The way supersymmetry breaking is mediated in these models to
the MSSM is by assuming that the physical gauginos are a mixture of a number of
gauge eigenstate gauginos: one of these couples to the SUSY breaking sector,
while another couples to the MSSM matter fields. The lattice can be as coarse
as just two gauge groups while still obtaining the characteristic
gaugino-mediated soft breaking terms.


title:
Solution to the 3-loop $\Phi$-derivable Approximation for Scalar
  Thermodynamics

abstract:
  We solve the 3-loop $\Phi$-derivable approximation to the thermodynamics of
the massless $\phi^4$ field theory by reducing it to a 1-parameter variational
problem. The thermodynamic potential is expanded in powers of $g^2$ and $m/T$,
where $g$ is the coupling constant, $m$ is a variational mass parameter, and
$T$ is the temperature. There are ultraviolet divergences beginning at 6th
order in $g$ that cannot be removed by renormalization. However the finite
thermodynamic potential obtained by truncating after terms of 5th order in $g$
and $m/T$ defines a stable approximation to the thermodynamic functions.


title: WW Physics at Future e+e- Linear Colliders

abstract:
  Measurements of triple gauge boson couplings and strong electroweak symmetry
breaking effects at future e+e- linear colliders are reviewed. The results
expected from a future e+e- linear collider are compared with LHC expectations.


title:
Stronger Neutrino Interactions at Extremely High Energies and the Muon
  Anomalous Magnetic Moment

abstract:
  A specific model of parity-conserving lepton substructure is considered. We
show that a positive-definite contribution to the muon $(g-2)/2$ at the
possible level of about $4\times 10^{-9}$, can be related to a significant
increase in the interaction cross section for cosmic-ray neutrinos with
energies above about $10^{19}$ eV. The additional cross section at $\sim
10^{20}$ eV is calculated to be $\sim 10^{-29}$ cm$^2$, which is about 100
times the standard weak-interaction cross section. The model involves an
extremely massive, neutral lepton, with $m_L\cong 2\times 10^6$ GeV fixed by
the new contribution to $(g-2)/2$.


title: Interference fragmentation functions and spin asymmetries

abstract:
  A new class of fragmentation functions, arising from the interference of
different hadron production channels, is analyzed. Their symmetry properties
with respect to naive time-reversal transformations allow for the exploration
of final-state interactions occurring during and after the hadronization. Their
symmetry properties with respect to chiral transformations allow building spin
asymmetries where the quark transversity distribution can be factorized out at
leading twist. Explicit calculations will be shown for the interference
fragmentation functions arising from final-state interactions of two pions
detected in the same current jet for the case of semi-inclusive Deep-Inelastic
Scattering (DIS).


title: Higgs production at hadron colliders in (almost) NNLO QCD

abstract:
  We compute the soft and virtual NNLO QCD corrections to Higgs production
through gluon-gluon fusion at hadron colliders. We present numerical results
obtained at the LHC and at the Tevatron Run II.


title: Inclusive Rare B Decays

abstract:
  We review the present status of rare B decays, focusing on inclusive decay
modes and their role in our search for new physics. We also briefly discuss
direct CP violation in rare B decays and the rare kaon decays $K^+\to
\pi^+\nu\bar{\nu}$ and $K_L \to \pi^0 \nu \bar{\nu}$, which offer complementary
opportunities for precision flavour physics.


title:
Atmospheric muon fluxes underwater as a tool to probe the small-x gluon
  distribution

abstract:
  We compute deep-sea energy spectra and zenith-angle distributions of the
atmospheric muons, both conventional and prompt. The prompt muon contribution
to the muon flux underwater is calculated taking into consideration predictions
of recent charm production models in which probed is the small-x behavior of
the gluon distribution inside of a nucleon. We argue for a possibility to
discriminate the PQCD models of the charm production differing in the slope of
the gluon distribution, in measurements with neutrino telescopes of the muon
flux at energies 10-100 TeV.


title: Second order contributions to elastic large-angle Bhabha scattering

abstract:
  We derive the coefficient of the O(alpha^2 log(s/m_e^2)) fixed order
contribution to elastic large-angle Bhabha scattering. We adapt the
classification of infrared divergences, that was recently developed within
dimensional regularization, and apply it to the regularization scheme with a
massive photon and electron.


title:
New scalar resonances from sneutrino-Higgs mixing in supersymmetry with
  small lepton number (R-parity) violation

abstract:
  We consider new s-channel scalar exchanges in top quark and massive
gauge-bosons pair production in e+e- collisions, in supersymmetry with a small
lepton number violation. We show that a soft bilinear lepton number violating
term in the scalar potential which mixes the Higgs and the slepton fields can
give rise to a significant scalar resonance enhancement in e+e- -> ZZ, W+W- and
in e+e- -> t t(bar). The sneutrino-Higgs mixed state couples to the incoming
light leptons through its sneutrino component and to either the top quark or
the massive gauge bosons through its Higgs component. Such a scalar resonance
in these specific production channels cannot result from trilinear Yukawa-like
R-parity violation alone, and may, therefore, stand as strong evidence for the
existence of R-parity violating bilinears in the supersymmetric scalar
potential. We use the LEP2 measurements of the WW and ZZ cross-sections to
place useful constrains on this scenario, and investigate the expectations for
the sensitivity of a future linear collider to these signals. We find that
signals of these scalar resonances, in particular in top-pair production, are
well within the reach of linear colliders in the small lepton number violation
scenario.


title: Classification of Effective Neutrino Mass Operators

abstract:
  We present a classification of SU(3) x SU(2) x U(1) gauge invariant \Delta L
= 2 (L being lepton number) effective operators relevant for generating small
Majorana neutrino masses. Operators of dimension up to 11 have been included in
our analysis. This approach enables us to systematically identify interesting
neutrino mass models. It is shown that many of the well-known models fall into
this classification. In addition, a number of new models are proposed and their
neutrino phenomenology is outlined. Of particular interest is a large class of
models in which neutrinoless double beta decays arise at a lower order compared
to the neutrino mass, making these decays accessible to the current round of
experiments.


title: Weak interactions in polarized semi-inclusive DIS

abstract:
  We calculate, within pQCD parton model at leading orders, the expression of
the polarization P of spin 1/2 hadrons (typically Lambda baryons), produced in
polarized semi-inclusive DIS in all possible cases in which weak interactions
are involved. We discuss how to gather new information on fragmentation and
distribution functions and give numerical estimates in the cases for which data
are or will soon be available.


title: Supersymmetry and Electroweak Leptonic Observables

abstract:
  We study vertex corrections to the leptonic electroweak observables in the
general MSSM at tan(beta) < 35. In particular, we address the question of
whether supersymmetry can be responsible for the observed 2 sigma deviation
from the Standard Model prediction in the invisible width of the Z. We find
that the presence of a light (around 100 GeV) chargino and sleptons hinted by
the muon g-2 measurements makes the agreement with experiment slightly better
and improves the electroweak fit.


title: epsilon'/epsilon and Chiral Dynamics

abstract:
  The long-distance contributions to $K\to 2\pi$ amplitudes can be pinned down,
using well established Chiral Perturbation Theory techniques. The strong
S--wave rescattering of the two final pions generates sizeable chiral loop
corrections, which have an important impact on the direct CP violation ratio
epsilon'/epsilon. Including all large logarithmic corrections, both at short
and long distances, the Standard Model Prediction for this observable is found
to be Re(epsilon'/epsilon) = (1.7\pm 0.9) 10^{-3}, in good agreement with the
most recent experimental measurements. A better estimate of the strange quark
mass could reduce the theoretical uncertainty to 30%.


title: QCD Calculations of Pion Electromagnetic and Transition Form Factors

abstract:
  A short review is given of calculations of the pion electromagnetic and
transition form factors within the framework of quantum chromodynamics. It is
argued that both the perturbative and nonperturbative aspects of the Q^2
dependence of these form factors are rather well understood in QCD. However,
new experimental data at higher Q^2 would be extremely helpful for detailed
tests of the transition to the regime where the pQCD hard contribution plays
the dominant role.


title: Kinematical twist-3 effects in DVCS as a quark spin rotation

abstract:
  We point out that the kinematical twist-3 contributions to the DVCS
amplitude, required to restore electromagnetic gauge invariance of the twist-2
amplitude up to O(t/q^2), can be understood as a spin rotation applied to the
twist-2 quark density matrix in the target. This allows for a compact
representation of the twist-3 effects, as well as for a simple physical
interpretation.


title: Flat Directions in Left-Right Symmetric String Derived Models

abstract:
  The only string models known to reproduce the Minimal Supersymmetric Standard
Model in the low energy effective field theory are those constructed in the
free fermionic formulation. We demonstrate the existence of quasi-realistic
free fermionic heterotic-string models in which supersymmetric singlet flat
directions do not exist. This raises the possibility that supersymmetry is
broken perturbatively in such models by the one-loop Fayet-Iliopoulos term. We
show, however, that supersymmetric flat directions that utilize VEVs of some
non-Abelian fields in the massless string spectrum do exist in the model. We
argue that hidden sector condensates lift the flat directions and break
supersymmetry hierarchically.


title: Detecting cosmic rays of the highest energies

abstract:
  Charged cosmic rays have been measured up to macroscopic energies. Concerning
neutrinos, the detection is still limited to terrestrial ones (apart from
supernova production). A new way to search for extragalactic neutrinos is
discussed.


title: Polarized Structure Functions in QCD

abstract:
  We review the nucleon's polarized structure functions from the viewpoint of
gauge invariant, nonlocal light-cone operators in QCD. We discuss a systematic
treatment of the polarized structure functions and the corresponding parton
distribution functions. We also address a question of what information on the
structure of Nature will be obtained from the future polarized experiments.
  From this point of view, we will discuss the W gamma production at RHIC
polarized experiment.


title: Hidden Sector Supergravity Breakdown

abstract:
  Gravity mediated supersymmetry breakdown originated from a study of gaugino
condensation in a hidden sector. We review this mechanism of supergravity
breakdown from the original formulation in the early eighties to its natural
implementation in superstring theory and M-theory. In the latter case hidden
and observable sector become separated geometrically and supersymmetry is
broken dynamically on a hidden wall.


title: Implications of the Measurements of Ue3 to Theory

abstract:
  The predictions of $U_{e3}$ are discussed. Typical models which lead to the
large, the seizable and the tiny $U_{e3}$ are also studied.


title:
Neutrino Masses from Non-minimal Gravitational Interactions of Massive
  Neutral Fermions

abstract:
  A new mechanism is proposed for generating neutrino masses radiatively
through a non-minimal coupling to gravity of fermionic bilinears involving
massive neutral fermions. Such coupling terms can arise in theories where the
gravity sector is augmented by a scalar field. They necessarily violate the
principle of equivalence, but such violations are not ruled out by present
experiments. It is shown that the proposed mechanism is realised most
convincingly in theories of the Randall- Sundrum type, where gravity couples
strongly in the TeV range. The mechanism has the potential for solving both the
solar and atmospheric neutrino problems. The smallness of neutrino masses in
this scenario is due to the fact that the interaction of the massive neutral
fermions arises entirely from higher-dimensional operators in the effective
Lagrangian.


title:
Maximum Relative Strangeness Content in Heavy Ion Collisions Around 30
  A.GeV

abstract:
  It is shown that the ratio of strange to non-strange particle production in
relativistic heavy ion collisions is expected to reach a maximum at beam
energies around 30 A.GeV in the lab frame. This maximum is unique to heavy ion
collisions, and has no equivalent in elementary particle collisions.
  The appearance of the maximum is due to the energy dependence of the chemical
freeze-out parameters and is clearly seen as a pronounced peak in the
Wroblewski factor as a function of the incident energy as well as in the
behavior of the K+/pi+ ratio. Below 30 A.GeV strange baryons contribute
strongly because of the very large value of the chemical potential muB.
  As the energy increases, the decrease of the baryon chemical potential
coupled with only moderate increases in the associated temperature causes a
decline in the relative number of strange baryons above energies of about 30
A.GeV leading to very pronounced maxima in the Lambda/pi+ and Xi-/pi+ ratios.


title: Systematic approach to exclusive B ->V l^+l^-, V gamma decays

abstract:
  We show -- by explicit computation of first-order corrections -- that the QCD
factorization approach previously applied to hadronic two-body decays and to
form factor ratios also allows us to compute non-factorizable corrections to
exclusive, radiative B meson decays in the heavy quark mass limit. This removes
a major part of the theoretical uncertainty in the region of small invariant
mass of the photon. We discuss in particular the decays B\to K^* \gamma and
B\to K^* l^+l^- and complete the calculation of corrections to the
forward-backward asymmetry zero. The new correction shifts the asymmetry zero
by 30%, but the result confirms our previous conclusion that the asymmetry zero
provides a clean phenomenological determination of the Wilson coefficient C_9.


title:
Lepton flavor violating $Z\to l_1^+ l_2^-$ decay in the general two
  Higgs Doublet model

abstract:
  We calculate lepton flavor violating Z -> l^+ l^- decay in the framework of
the general two Higgs Doublet model. In our calculations we used the
constraints for the Yukawa couplings \bar{\xi}^{D}_{N,\tau e} and
\bar{\xi}^{D}_{N,\tau\mu} coming from the experimental result of muon electric
dipole moment and upper limit of the BR(\mu -> e\gamma). We observe that it is
possible to reach the present experimental upper limits for the branching
ratios of such Z decays in the model III.


title: Overview of NNLO QCD corrections

abstract:
  We discuss the motivation for making predictions for jet cross sections at
next-to-next-to-leading order. We describe the theoretical ingredients needed
for such a calculation and briefly review the progress in the field.


title: Computing the perturbative gluon condensate

abstract:
  The normalization of the gluon condensate and of renormalon-related power
corrections in QCD is computed under the assumption that their ``perturbative''
part dominates over any eventual extra contribution from the non-trivial
vacuum. The calculation is performed in the infrared finite coupling framework,
assuming an infrared fixed point is present in the perturbative coupling down
to low values of N_f. The freezing perturbative coupling is reconstructed using
a Banks-Zaks expansion approach. Parameter-free predictions of the low energy
moments of the coupling, which determine the process-independent part of the
power corrections, are obtained for a number of choices of the running
coupling.


title:
Neutrino cross sections at high energies and the future observations of
  ultrahigh-energy cosmic rays

abstract:
  We show that future detectors of ultrahigh-energy cosmic-ray neutrinos will
be able to measure neutrino-nucleon cross section at energies as high as
10^{11}GeV or higher. We find that the flux of up-going charged leptons per
unit surface area produced by neutrino interactions below the surface is
inversely proportional to the cross section. This contrasts with the rate of
horizontal air showers (HAS) due to neutrino interactions in the atmosphere,
which is proportional to the cross section. Thus, by comparing the HAS and
up-going air shower (UAS) rates, the neutrino-nucleon cross section can be
inferred. Taken together, up-going and horizontal rates ensure a healthy total
event rate, regardless of the value of the cross section.


title:
To be (finite) or not to be, that is the question "Kaluza-Klein
  contribution to the Higgs mass"

abstract:
  Recently five dimensional supersymmetric models with a Scherk-Schwarz
supersymmetry breaking and a localized superpotential on a fixed-point have
been constructed to yield a definite prediction for the Higgs mass. We examine
this issue in detail and show that the finite one loop correction and the
definite prediction for the Higgs mass are just a consequence of a special
"Kaluza-Klein regularization" scheme.


title: Local Duality Predictions for x ~ 1 Structure Functions

abstract:
  Recent data on the proton F_2 structure function in the resonance region
suggest that local quark-hadron duality works remarkably well for each of the
low-lying resonances, including the elastic, to rather low values of Q^2. We
derive model-independent relations between structure functions at x ~ 1 and
elastic electromagnetic form factors, and predict the x -> 1 behavior of
nucleon polarization asymmetries and the neutron to proton structure function
ratios from available data on nucleon electric and magnetic form factors.


title: Detailed Balance and Sea-Quark Flavor Asymmetry of Proton

abstract:
  In this study, the proton is taken as an ensemble of quark-gluon Fock states.
Using the principle of detailed balance, the probabilities of finding every
Fock states of the proton are obtained without any parameter. A new origin of
the light flavor sea quark asymmetry, i.e., $\bar{u} \not= \bar{d}$, is given
as a pure statistical effect. It is found that $\bar{d}-\bar{u} \approx 0.124$,
which is in surprisingly agreement with the experimental observation.


title: MRST Global Fit Update

abstract:
  We discuss the impact of the most recent data on the MRST global analysis -
in particular the new high-E_T jet data and their implications for the gluon
and the new small x structure function data. In the light of these new data we
also consider the uncertainty in predictions for physical quantities depending
on parton distributions, concentrating on the W cross-section at hadron
colliders.


title:
Flux of upward high-energy muons at the multi-component primary energy
  spectrum

abstract:
  The atmospheric neutrino-induced upward muon flux are calculated by using the
multi-component primary energy spectrum, CORSIKA EAS simulation code for the
reproduction of the atmospheric neutrino spectra and improved parton model for
charged-current cross sections. The results are obtained at 0.1-1000 TeV muon
energy range and 0-89 degrees zenith angular range.


title: Radions in a $\gamma\gamma$ collider

abstract:
  We study the resonance production of radions via $\gamma\gamma$ fusion in the
Randall-Sundrum model. We find that the cross section of the process in the
$\gamma\gamma$ mode of a linear collider (LC) can be of similar size as in the
$e^+e^-$ collision mode, if the radion is heavy. We consider the possible
curvature-Higgs mixing in the model, and we find that the mixing should be
constrained in order to avoid an unphysical state. The process $\gamma\gamma
\to \phi$ is the main source of radions at LC near the conformal limit. We
consider both the decay modes of radion with curvature-Higgs mixing and
without. Our results show that the radion with mass below 800 GeV could be
detected at LC with any mixing parameter and vacuum expectation value of the
radion around 1 TeV.


title:
The Bose-Einstein distribution functions and the multiparticle
  production at high energies

abstract:
  The evolution properties of propagating particles produced at high energies
in a randomly distributed environment are studied. The finite size of the phase
space of the multiparticle production region as well as the chaoticity can be
derived.


title: Dynamics and Properties of Chiral Cosmic Strings

abstract:
  Chiral cosmic strings naturally arise in many particle physics models, in
particular in supersymmetric theories with a D-term. These strings have a
single fermion zero mode in the core. We derive the general equation of motion
for such strings. In Minkowski space we give the self-intersections for an
arbitary varying current on the loop, showing that the self-intersection
probability is dominated by the fraction of loop with maximal charge. We show
how to relate the charge to the fermion condensation temperature, arguing that
strings which become current carrying at formation will automatically have a
maximal charge. Any daughter loops produced are likely to have the same charge
as the parent loop. Possible models for chiral cosmic strings are also
discussed and consequences for D-term inflation mentioned.


title: Chiral Extrapolations and Exotic Meson Spectrum

abstract:
  We examine the chiral corrections to exotic meson masses calculated in
lattice QCD. In particular, we ask whether the non-linear chiral behavior at
small quark masses, which has been found in other hadronic systems, could lead
to large corrections to the predictions of exotic meson masses based on linear
extrapolations to the chiral limit. We find that our present understanding of
exotic meson decay dynamics suggests that open channels may not make a
significant contribution to such non-linearities whereas the virtual, closed
channels may be important.


title: The Radiative Decays B -> V gamma at Next-to-Leading Order in QCD

abstract:
  We provide a model-independent framework for the analysis of the radiative
B-meson decays B -> K* gamma and B -> rho gamma. In particular, we give a
systematic discussion of the various contributions to these exclusive processes
based on the heavy-quark limit of QCD. We propose a novel factorization formula
for the consistent treatment of B -> V gamma matrix elements involving charm
(or up-quark) loops, which contribute at leading power in Lambda_QCD/m_B to the
decay amplitude. Annihilation topologies are shown to be power suppressed. In
some cases they are nevertheless calculable. The approach is similar to the
framework of QCD factorization that has recently been formulated for two-body
non-leptonic B decays. These results allow us, for the first time, to compute
exclusive b -> s(d) gamma decays systematically beyond the leading logarithmic
approximation. We present results for these decays complete to next-to-leading
order in QCD and to leading order in the heavy-quark limit. Phenomenological
implications for various observables of interest are discussed, including
direct CP violation, and isospin and U-spin breaking effects.


title: With Grand Unification Signals in, Can Proton Decay be Far Behind?

abstract:
  It is noted that one is now in possession of a set of facts, which may be
viewed as the matching pieces of a puzzle ; in that all of them can be resolved
by just one idea - that is grand unification. These include : (i) the observed
family-structure, (ii) quantization of electric charge, (iii) meeting of the
three gauge couplings, (iv) neutrino oscillations; in particular the mass of
$\nu_{\tau}$ suggested by SuperK), (v) the intricate pattern of the masses and
mixings of the fermions, including the smallness of $V_{cb}$ and the largeness
of $\theta^{osc}_{\nu_{\mu}\nu_{\tau}}$, and (vi) the need for $B$-$L$ to
implement baryogenesis (via leptogenesis). All these pieces fit beautifully
together within a single puzzle board framed by supersymmetric unification,
based on SO(10) or a string-unified G(224)-symmetry. The one and the most
notable piece of the puzzle still missing, however, is proton decay. A concrete
proposal is presented, within a predictive SO(10)/G(224)-framework, that
successfully describes the masses and mixings of all fermions, including the
neutrinos - with eight predictions, all in agreement with observation. An
updated study of proton decay is carried out within this framework, which shows
that a conservative upper limit on its lifetime is about (1/2-1)\times 10^34
yrs.


title:
Determining the Phases alpha and gamma from Direct CP Violation in B_u,
  B_d and B_s Decays to Two Vectors

abstract:
  A method for clean determination of the unitarity angles alpha and gamma is
proposed that uses only direct CP violation and does not require any time
dependent measurements. The method takes advantage of helicity amplitudes for
B_u, B_d and B_s decay to two vector mesons and can be used, at any B-facility,
in conjunction with a large number of modes. It also allows for experimental
tests of theoretical approximations involved.


title:
Scalar and pseudoscalar meson pole terms in the hadronic light-by-light
  contributions to $a_\mu^{had}$

abstract:
  Third QED order hadronic light-by-light (LBL) contributions $a_\mu^{LBL}(M)$
to the anomalous magnetic moment of the muon $a_\mu^{had}$ from the pole terms
of scalar $\sigma$, $a_0(980)$ and pseudoscalar $\pi^0$, $\eta$, $\eta '$
mesons (M) in the framework of the linearized extended Nambu-Jona-Lasinio model
are evaluated. The off-shell structure of the photon-photon-meson vertices is
taken into account by means of constituent quark triangle loops. The mass of
the quark is taken to be $m_u=m_d=m_q=(280 \pm 20)$ MeV. The unknown strong
coupling constants of $\pi^0, \eta, \eta '$ and $a_0$ mesons with quarks are
evaluated in a comparison of the corresponding theoretical two-photon widths
calculated in the framework of our approach with experimental ones. The
$\sigma$-meson coupling constant is taken to be equal to $\pi_0$-meson coupling
constant as it follows from the linearized Nambu-Jona-Lasinio model Lagrangian.
Then one obtains $a_\mu^{LBL}(\pi_0)$=$(81.83 \pm 16.50) \times 10^{-11}$,
$a_\mu^{LBL}(\eta)$=$(5.62 \pm 1.25) \times 10^{-11}$, $a_\mu^{LBL}(\eta
')$=$(8.00 \pm 1.74) \times 10^{-11}$, $a_\mu^{LBL}(\sigma)$=$(11.67 \pm 2.38)
\times 10^{-11}$ and $a_\mu^{LBL}(a_0)$=$(0.62 \pm 0.24) \times 10^{-11}$. The
total contribution of meson poles in LBL is $a_\mu^{LBL}(M)$=$(107.74 \pm
16.81) \times 10^{-11}$.


title: Models of neutrino masses and mixings

abstract:
  We briefly review models of neutrino masses and mixings. In view of the
existing experimental ambiguities many possibilities are still open. After an
overview of the main alternative options we focus on the most constrained class
of models based on three widely split light neutrinos within SUSY Grand
Unification.


title: The matter fluctuation effect to T violation at a neutrino factory

abstract:
  We derived an analytic formula for T violation by using the perturbation
theory for small quantities, $\Delta m_{21}^2L/2E$ and $\delta a(x)L/2E$, where
$\delta a(x)$ represents symmetric and asymmetric matter fluctuations, i.e.,
deviations from the average density. We analyzed the effect of matter
fluctuations to T violation, by assuming PREM profile of earth matter density.
We found that matter fluctuations do not give any viable contribution for
$L<$6000km, while the fluctuation effect becomes large due to resonances for
$L>$7000km. For 7000km$<L<$8000km, matter fluctuations contribute destructively
to the average density term and the net result is small, while for $L>$8000km,
the contribution from matter fluctuations becomes large but contributes
constructively.


title: Jets signal for Higgs particle detection at LHC

abstract:
  A method using jets is investigated for detecting the Higgs boson at LHC in
the mass range about 114 \GeVc2, suggested by LEP experiments. Higgs bosons are
produced in association with a $t \bar{t}$ pair, and both t and $\bar{t}$ decay
semileptonically to reduce the QCD background. After appropriate cuts, the
signal is compared with the main background, $t \bar{t} + 2$ jets. This
estimate, using a reasonable approximation for the dominant background $t\bar
{t}gg$, suggests a $5.1\sigma$ effect. This method is seen to be complimentary
to the two gamma signal. The $t\bar{t}Z$ channel, with Z decaying to $l^+ l^-$,
may be used to reduce theoretical uncertainties in determining the $t \bar{t}H$
signal.


title:
Neutrino Factories: Detector Concepts for studies of CP and T violation
  effects in neutrino oscillations

abstract:
  The ideal neutrino detector at the neutrino factory should have a mass in the
range of 10 kton, provide particle identification to tag the flavor of the
incoming neutrino, lepton charge measurement to select the incoming neutrino
helicity, good energy resolution to reconstruct the incoming neutrino energy,
and be isotropic to equally well reconstruct incoming neutrinos from different
baselines (it might be more efficient to build various sources at different
baselines, than various detectors). The detector should also be able to
reconstruct neutrino event typically below 15 GeV. A detector with such quality
is most adapted to fully study neutrino oscillations at the neutrino factory.
In particular, measurement of the leading muons and electrons charge is the
only way to fully simultaneously explore CP and T violation effects. We think
that a magnetized liquid argon imaging detector stands today as the best choice
of technique, that holds the highest promises to match the above mentioned
detector requirements. We discuss also the optimal neutrino factory energy and
baseline between source and detector in order to best perform these studies.


title:
SUSY Phases, the Electron Electric Dipole Moment and the Muon Magnetic
  Moment

abstract:
  The electron electric dipole moment (d_e) and the muon magnetic moment
anomaly (a_{\mu}) recently observed at BNL are analyzed within the framework of
SUGRA models with CP violating phases at the GUT scale. It is seen analytically
that even if d_e were zero, there can be a large Bino mass phase (ranging from
0 to 2 \pi) with a corresponding large B soft breaking mass phase (of size ~<
0.5 with sign fixed by the experimental sign of a_{\mu}). The dependence of the
B phase on the other SUSY parameters, gaugino mass m_{1/2}, \tan \beta, A_0, is
examined. The lower bound of a_{\mu} determines the upper bound of m_{1/2}. It
is shown analytically how the existence of a non-zero Bino phase reduces this
upper bound (which would correspondingly lower the SUSY mass spectra). The
experimental upper bound on d_e determines the range of allowed phases, and the
question of whether the current bound on d_e requires any fine tuning is
investigated. At the electroweak scale, the phases have to be specified to
within a few percent. At the GUT scale, however, the B phase requires fine
tuning below the 1% level over parts of the parameter space for low m_{1/2},
and if the current experimental bound on d_e were reduced by only a factor of
3-4, fine tuning below 1% would occur at both the electroweak and GUT scale
over large regions of the parameter space. All accelerator constraints (m_h >
114 GeV, b -> s \gamma, etc.) and relic density constraints with all
stau-neutralino co-annihilation processes are included in the analysis.


title:
Stringent limits on quark star masses due to the chiral transition
  temperature

abstract:
  Recent finite-temperature QCD lattice data are analyzed within a
quasiparticle model, and extrapolated to nonzero chemical potential. Determined
by the chiral transition temperature, the resulting equation of state of charge
neutral, $\beta$-stable deconfined matter limits the mass and the size of quark
stars.