title: Probing the Radion-Higgs mixing at hadronic colliders

abstract:
  In the Randall-Sundrum model, the radion-Higgs mixing is weakly suppressed by
the effective electroweak scale. One of its novel features would be a sizable
three-point vertex of KK graviton-Higgs-radion. We explored the potential of
the Fermilab Tevatron and the CERN LHC in probing the radion-Higgs mixing via
the associated production of the radion with the Higgs boson. The observation
of the rare decay of the KK gravitons into a Higgs and a radion is then the
direct and exclusive signal of the radion-Higgs mixing. We also studied all the
partial decay widths of the KK gravitons in the presence of the radion-Higgs
mixing, and found that if the mixing parameter is of order one, the decay rate
into a radion and a Higgs boson becomes as large as that into a Higgs boson
pair, with the branching ratio of order 0.001.


title:
Nonfactorizable soft contributions in the $B\longrightarrow \eta_c
  K,\chi_{c0} K$ decays with the light-cone sum rules approach

abstract:
  In this article, we calculate the nonfactorizable soft contributions in the
$B \to \eta_c K, \chi_{c0} K$ decays with the light cone QCD sum rules
approach. Our results show that the nonfactorizable corrections from the soft
gluon exchanges in the decay $B \to \eta_c K$ are of $(15-30)%$ and should not
be neglected. As for the decay $B \to \chi_{c0} K$, the factorizable
contributions are zero and the nonfactorizable contributions from the soft
hadronic matrix elements are too small to accommodate the experimental data.


title: Black Holes at future colliders

abstract:
  We consider the production and decay of TeV sized black holes. After
discussing evaluation of the production cross section of higher dimensional
rotating black holes and black rings, the master equation for general spin-$s$
fields confined on brane world is derived. For five-dimensional
(Randall-Sundrum) black holes, we obtain analytic formulae for the greybody
factors in low frequency expansion.


title:
Modulational and filamentational instabilities of two electromagnetic
  pulses in a radiation background

abstract:
  The nonlinear interaction, due to quantum electrodynamical (QED) effects,
between two electromagnetic pulses and a radiation gas is investigated. It is
found that the governing equations admit both modulational and filamentational
instabilities. The instability growth rates are derived, and the results are
discussed.


title:
Light by light scattering at a low energy $e^+e^-$ collider -or- What to
  do while waiting for that rare kaon decay event

abstract:
  Two photon processes are a wonderful by-product of an $e^+e^-$ collider at
any energy. Two photon reactions probe the very structure of matter. A machine
operating below 2 GeV has the potential to reveal the Higgs sector of the
strong interaction -- the scalars with vacuum quantum numbers that reflect
dynamical mass generation from the breakdown of chiral symmetry. One of the
many $e^+e^-$ machines around the globe must have a dedicated $\gamma\gamma$
facility.


title: J/\psi dissociation cross sections in a relativistic quark model

abstract:
  We calculate the amplitudes and the cross sections of the charm dissociation
processes J/\psi \pi => D \bar D, D* \bar D, D \bar D*, D* \bar D* within a
relativistic constituent quark model. We consistently account for the
contributions coming from both the box and triangle diagrams that contribute to
the dissociation processes. The cross section is dominated by the D* \bar D and
D* \bar D* channels. When summing up the four channels we find a maximum total
cross section of about 2.3 mb at sqrt(s) \approx 4.1 GeV. We compare our
results to the results of other model calculations.


title: How low is the thermodynamical limit?

abstract:
  We analyze how can some dynamical process lead to (almost) exponential
distribution of hadrons without instantaneous equipartition with a heat bath.
We present a model for parton dressing whic re-combines the exponential from
cut power law minijet distributions as a limiting distribution. Thermal models
and power law tails are interpreted within the framework of the more general
Tsallis distribution.


title: Generalized Weinberg's approach to the a0/f0 case

abstract:
  The problem of whether it is possible to distinguish composite from
elementary particles is studied in the framework of Weinberg's approach. The
possibility to extend this approach to the case of unstable particles in the
presence of inelastic channels is considered. The interplay between the
low-energy scattering data and the admixture of a bare state in the resonance
is discussed, and the implications for the a0(980)/f0(980) case are outlined.


title: A theoretical review of heavy quarkonium inclusive decays

abstract:
  In this brief review, I summarize the current theoretical knowledge of heavy
quarkonium inclusive decays, with emphasis on recent progress made in the
framework of QCD effective field theories. In appendix, I list the imaginary
parts of the matching coefficients of the dimension 6 and dimension 8 NRQCD
four-fermion operators as presently known.


title:
NNLO corrections to massive lepton-pair production in longitudinally
  polarized proton-proton collisions

abstract:
  We present the full next-to-next-to-leading order (NNLO) coefficient
functions for the polarized cross section $d\Delta \sigma/dQ$ for the Drell-Yan
process $p + p\to l^+l^- + 'X'$. Here $'X'$ denotes any inclusive hadronic
state and $Q$ represents the invariant mass of the lepton pair. All QCD
partonic subprocesses have been included provided the lepton pair is created by
a virtual photon, which is a valid approximation for $Q<50$ GeV. Unlike the
differential distribution w.r.t. transverse momentum the dominant subprocess
for the integrated cross section is given by $q+\bar q \to \gamma^* + 'X'$ and
its higher order corrections so that massive lepton pair production provides us
with an excellent tool to measure the polarized anti-quark densities. Our
calculations are carried out using the method of $n$-dimensional regularization
by making a special choice for the $\gamma_5$ matrix. We give predictions for
double longitudinal spin asymmetry measurements at the RHIC.


title:
S wave meson spectra from the light cone harmonic oscillator model with
  a consistent hyperfine interaction

abstract:
  We use a light cone harmonic oscillator model to study S wave meson spectra,
namely the pseudoscalar and vector mesons. The model Hamiltonian is a mass
squared operator consisting of a central potential (a harmonic oscillator
potential) from which a hyperfine interaction is derived. The hyperfine
interaction is responsible for the splitting in the pseudoscalar-vector
spectra. With 4 parameters for the masses of up/down, strange, charm and bottom
quarks, 2 for the harmonic oscillator potential and 1 for the hyperfine
interaction, the model presents a reasonably good agreement with the data.


title: Z-scaling and space-time structural relativity

abstract:
  Assuming fractality of hadronic constituents, we introduce elements of
special realization of the relativity principle applied to physical quantities
expressed with respect to various fractal structures. The construction is
inspired by the premisses of the z-scaling observed in the inclusive reactions
at high energies. The scheme concerns parton structure of hadrons and nuclei at
small scales.


title: An Overview of the Anomaly-Induced Inflation

abstract:
  The anomaly-induced inflation (modified Starobinsky model) is based on the
application of the effective quantum field theory approach to the Early
Universe. We present a brief general review of this model with a special
attention to the existing difficulties and unsolved problems.


title: Stability issues in the modified Starobinsky model

abstract:
  We discuss the stability of the anomaly-induced inflation (modified
Starobinsky model) with respect to the arbitrary choice of initial data and
with respect to the small perturbations of the conformal factor and tensor
modes of the metric in the later period of inflation and, partially, in the
present Universe.


title: Gravitational waves in an anomaly-induced inflation

abstract:
  The behaviour of gravitational waves in the anomaly-induced inflationary
phase is studied. The metric perturbations exhibit a stable behaviour, with a
very moderate growth in the amplitude of the waves. The spectral indice is
computed, revealing an almost flat spectrum.


title: Neutrino masses in R-parity violating supersymmetric models

abstract:
  We study neutrino masses and mixing in R-parity violating supersymmetric
models with generic soft supersymmetry breaking terms. Neutrinos acquire masses
from various sources: Tree level neutrino--neutralino mixing and loop effects
proportional to bilinear and/or trilinear R-parity violating parameters. Each
of these contributions is controlled by different parameters and have different
suppression or enhancement factors which we identified. Within an Abelian
horizontal symmetry framework these factors are related and specific
predictions can be made. We found that the main contributions to the neutrino
masses are from the tree level and the bilinear loops and that the observed
neutrino data can be accommodated once mild fine-tuning is allowed.


title: A new method for real radiation at NNLO

abstract:
  We propose a new method of computing real emission contributions to hard QCD
processes. Our approach uses sector decomposition of the exclusive final-state
phase space to enable extraction of all singularities of the real emission
matrix elements before integration over any kinematic variable. The exact
kinematics of the real emission process are preserved in all regions of phase
space. Traditional approaches to extracting singularities from real emission
matrix elements, such as phase space slicing and dipole subtraction, require
both the determination of counterterms for double real emission amplitudes in
singular kinematic limits and the integration of these contributions
analytically to cancel the resulting singularities against virtual corrections.
Our method addresses both of these issues. The implementation of constraints on
the final-state phase space, including various jet algorithms, is simple using
our approach. We illustrate our method using electron-positron --> jets at NNLO
as an example.


title: The phantom menaced: constraints on low-energy effective ghosts

abstract:
  It has been suggested that a scalar field with negative kinetic energy, or
``ghost,'' could be the source of the observed late-time cosmological
acceleration. Naively, such theories should be ruled out by the catastrophic
quantum instability of the vacuum. We derive phenomenological bounds on the
Lorentz-violating ultraviolet cutoff Lambda which must apply to low-energy
effective theories of ghosts, in order to keep the instability at unobservable
levels. Assuming only that ghosts interact at least gravitationally, we show
that Lambda < 3 MeV for consistency with the cosmic gamma ray background. We
also show that theories of ghosts with a Lorentz-conserving cutoff are
completely excluded.


title:
Direct Solution of Renormalization Group Equations of QCD in $x-$space:
  NLO Implementations at Leading Twist

abstract:
  We illustrate the implementation of a method based on the use of recursion
relations in (Bjorken) $x-$space for the solution of the evolution equations of
QCD for all the leading twist distributions. The algorithm has the advantage of
being very fast. The implementation that we release is written in C and is
performed to next-to-leading order in $\alpha_s$.


title: Electric Dipole Moments in the MSSM at Large tan(beta)

abstract:
  Within the minimal supersymmetric standard model (MSSM), the large tan(beta)
regime can lead to important modifications in the pattern of CP-violating
sources contributing to low energy electric dipole moments (EDMs). In
particular, four-fermion CP-violating interactions induced by Higgs exchange
should be accounted for alongside the constituent EDMs of quarks and electrons.
To this end, we present a comprehensive analysis of three low energy EDM
observables - namely the EDMs of thallium, mercury and the neutron - at large
tan(beta), in terms of one- and two-loop contributions to the constituent EDMs
and four-fermion interactions. We concentrate on the constrained MSSM as well
as the MSSM with non-universal Higgs masses, and include the CP-violating
phases of mu and A. Our results indicate that the atomic EDMs receive
significant corrections from four-fermion operators, especially when Im(A) is
the only CP-violating source, whereas the neutron EDM remains relatively
insensitive to these effects. As a consequence, in a large portion of the
parameter space, one cannot infer a separate bound on the electron EDM via the
experimental constraint on the thallium EDM. Furthermore, we find that the
electron EDM can be greatly reduced due to the destructive interference of one-
and two-loop contributions with the latter being dominated by virtual staus.


title:
Non-perturbative Kahler Potential, Dilaton Stabilization and
  Fayet-Iliopoulos Term

abstract:
  We study the dilaton stabilization in models with anomalous U(1) symmetry by
adding specific string-motivated, non-perturbative corrections to the
tree-level dilaton K\"{a}hler potential. We find that the non-perturbative
effects can stabilize the dilaton at a desirably large value. We also observe
that the size of Fayet-Iliopoulos term is reduced at the stabilized point.


title: Softening the Supersymmetric Flavor Problem in Orbifold GUTs

abstract:
  The infra-red attractive force of the bulk gauge interactions is applied to
soften the supersymmetric flavor problem in the orbifold SU(5) GUT of Kawamura.
Then this force aligns in the infra-red regime the soft supersymmetry breaking
terms out of their anarchical disorder at a fundamental scale, in such a way
that flavor-changing neutral currents as well as dangerous CP-violating phases
are suppressed at low energies. It is found that this dynamical alignment is
sufficiently good compared with the current experimental bounds, as long as the
diagonalization matrices of the Yukawa couplings are CKM-like.


title: Quantum-hydrodynamical picture of the massive Higgs boson

abstract:
  The phenomenon of spontaneous symmetry breaking admits a physical
interpretation in terms of the Bose-condensation process of elementary spinless
quanta. In this picture, the broken-symmetry phase emerges as a real physical
medium, endowed with a hierarchical pattern of scales, supporting two types of
elementary excitations for k \to 0: a massive energy branch E_a(k) \to M_H,
corresponding to the usual Higgs boson field, and a collective gap-less branch
E_b(k) \to 0. This is similar to the coexistence of phonons and rotons in
superfluid He-4 that, in fact, is usually considered the condensed-matter
analog of the Higgs condensate.
  After previous work dedicated to the properties of the gap-less, phonon
branch, in this paper we use quantum hydrodynamics to propose a physical
interpretation of the massive branch. On the base of our results, M_H coincides
with the energy-gap for vortex formation and a massive Higgs boson is like a
roton in superfluid He-4. Within this interpretation of the Higgs particle,
there is no "naturalness" problem since M_H remains a naturally intermediate,
fixed energy scale, even for an ultimate ultraviolet cutoff Lambda \to \infty.


title:
Can Centauros or Chirons be the first observations of evaporating mini
  black holes?

abstract:
  We argue that the signals expected from the evaporation of mini black holes -
predicted in TeV-scale gravity models with large extra dimensions, and possibly
produced in ultra high energy collisions in the atmosphere - are quite similar
to the characteristics of the Centauro events, an old mystery of cosmic-ray
physics.


title:
Cosmological constraints from Microwave Background Anisotropy and
  Polarization

abstract:
  The recent high-quality measurements of the Cosmic Microwave Background
anisotropies have presented cosmologists with the possibility of studying the
large scale properties of our universe with unprecedented precision. Here I
review the current status of observations and constraints on theoretical
models.


title: Lepton Flavour Violation in Supersymmetric Models

abstract:
  We present two recent developments on lepton flavour violation in the MSSM.
1) The supersymmetric seesaw mechanism can be realized through the exchange of
heavy SU(2)_W-triplet states, rather than `right-handed' neutrinos. In this
scenario the ratio of the tau --> mu gamma (or tau --> e gamma) and mu --> e
gamma rates are unambiguously predicted in terms of the low-energy neutrino
parameters. 2) Lepton flavour violating decays of the Higgs bosons, (h, H, A)
--> mu tau, are induced at one-loop level. The branching ratios can reach
10^{-4} for large tan(beta) and sizeable smuon-stau mixing. Interesting
implications for LHC and correlations with tau --> mu gamma and tau --> 3 mu
are found.


title: Hadronic processes and electromagnetic corrections

abstract:
  The inclusion of electromagnetism in a low energy effective theory is worth
further study in view of the present high precision experiments (muon g-2,
pi_0->2 gamma, tau decays, etc.). In particular in many applications of chiral
perturbation theory, one has to purify physical matrix elements from
electromagnetic effects. The theoretical problems that I want to point out here
are following: the splitting of a pure QCD and a pure electromagnetic part in a
hadronic process is model dependent: is it possible to parametrise in a clear
way this splitting? What kind of information (scale dependence, gauge
dependence,..) is actually included in the parameters of the low energy
effective theory? I will attempt to answer these questions introducing a
possible convention to perform the splitting between strong and electromagnetic
parts in some examples.


title: Radiative Corrections, New Physics Fits and e+e-->?->ffbar

abstract:
  This document reviews the general approach to correcting the process
e+e-->X->ffbar for radiative effects, where X represents an exchanged gauge
boson arising from some new physics. The validity of current methods is
discussed in the context of the differential cross section. To this end the
universality of the dominant QED radiative corrections to such a process is
discussed and an attempt is made to quantify it. The paper aims to justify, as
much as possible, the general approach taken by e+e- collider experiments to
the issue of how to treat the dominant radiative corrections in fitting models
of new physics using inclusive and exclusive cross section measurements. We
conclude that in all but the most pathological of new physics models the
dominant radiative corrections (QED) to the tree level processes of the
standard model can be expected to hold well for new physics. This argument
follows from the fact that the phase space of indirect new physics searches is
generally restrictive (high s' events) in such a way that the factorization of
radiative corrections is expected to hold well and generally universal infrared
corrections should be prevalent.


title:
High-precision evaluation of four-loop vacuum bubbles in three
  dimensions

abstract:
  In this letter we present a high-precision evaluation of the expansions in
eps=(3-d)/2 of (up to) four-loop scalar vacuum master integrals, using the
method of difference equations developed by Laporta. We cover the complete set
of fully massive master integrals.


title: Lifting degeneracies in the oscillation parameters by a neutrino factory

abstract:
  We study the potential of a very long baseline neutrino oscillation
experiment with a neutrino factory and a large segmented water-Cerenkov
calorimeter detector in resolving the degeneracies in the neutrino oscillation
parameters; the sign of the larger mass-squared difference $\delta m^2_{13}$,
the sign of $|U_{\mu 3}|^2 (\equiv \sin^2\theta_{ATM)-1/2$, and a possible
two-fold ambiguity in the determination of the CP phase $\delta_{MNS}$. We find
that the above problems can be resolved even if the particle charges are not
measured. The following results are obtained in our exploratory study for a
neutrino factory which delivers $10^{21}$ decaying $\mu^+$ and $\mu^-$ at 10
GeV and a 100 kton detector which is placed 2,100 km away and is capable of
measuring the event energy and distinguishing $e^\pm$ from $\mu^\pm$, but not
their charges. The sign of $\delta m^2_{13}$ can be determined for
$4|U_{e3}|^2(1-|U_{e3}|^2)\equiv \sin^22\theta_{RCT}\gsim 0.008$. That of
$\sin^2\theta_{ATM}-1/2$ can be resolved for $\sin^22\theta_{ATM}=0.96$ when
$\sin^22\theta_{RCT}\gsim 0.06$. The CP-violating phase $\delta_{MNS}$ can be
uniquely constrained for $\sin^22\theta_{RCT}\gsim 0.02$ if its true value is
around $90^\circ$ or $270^\circ$, while it can be constrained for
$\sin^22\theta_{RCT}\gsim 0.03$ if its true value is around $0^\circ$ or
$180^\circ$.


title: The gluon splitting function at moderately small x

abstract:
  It is widely believed that at small x, the BFKL resummed gluon splitting
function should grow as a power of 1/x. But in several recent calculations it
has been found to decrease for moderately small-x before eventually rising. We
show that this `dip' structure is a rigorous feature of the P_gg splitting
function for sufficiently small alpha_s, the minimum occurring formally at ln
1/x of order 1/sqrt(alpha_s). We calculate the properties of the dip, including
corrections of relative order sqrt(alpha_s), and discuss how this expansion in
powers of sqrt(alpha_s), which is poorly convergent, can be qualitatively
matched to the fully resummed result of a recent calculation, for realistic
values of alpha_s. Finally, we note that the dip position, as a function of
alpha_s, provides a lower bound in x below which the NNLO fixed-order expansion
of the splitting function breaksdown and the resummation of small-x terms is
mandatory.


title:
Electrophobic Lorentz invariance violation for neutrinos and the see-saw
  mechanism

abstract:
  We show how Lorentz invariance violation (LIV) can occur for Majorana
neutrinos, without inducing LIV in the charged leptons via radiative
corrections. Such ``electrophobic'' LIV is due to the Majorana nature of the
LIV operator together with electric charge conservation. Being free from the
strong constraints coming from the charged lepton sector, electrophobic LIV can
in principle be as large as current neutrino experiments permit. On the other
hand electrophobic LIV could be naturally small if it originates from LIV in
some singlet ``right-handed neutrino'' sector, and is felt in the physical
left-handed neutrinos via a see-saw mechanism. We develop the formalism
appropriate to electrophobic LIV for Majorana neutrinos, and discuss
experimental constraints at current and future neutrino experiments.


title: Single sneutrino production at hadron colliders

abstract:
  We study the production of a single sneutrino in association with one or two
$b$-quarks at hadron colliders, in the framework of an R-parity violating
supersymmetric model. We find that at the Large Hadron Collider (LHC) four $b$
final states are promising with efficient b-tagging. $l^+l'^-$ decay modes of
the sneutrino can also be viable for detection at the LHC. However, the
branching ratio for rare $\gamma\gamma$ decay channel is too small to be seen.


title: The Flux Tube Model: Applications, Tests, and Extensions

abstract:
  A review and critique of the Isgur-Paton flux tube model of hadronic physics
is presented. This entails a detailed comparison with recent lattice gauge
theory results which exposes both the successes and shortcomings of the model.
Applications to hybrid masses, meson and hybrid meson decays, hadronic charge
radii, the spin-orbit force, baryonic hybrids, and hybrid photocouplings are
also discussed. Finally, I comment on the issue of adiabatic surface crossing
which appears in both the flux tube model and lattice studies.


title:
Nonforward anomalous dimensions of Wilson operators in N=4
  super-Yang-Mills theory

abstract:
  We present the next-to-leading order results for universal non-forward
anomalous dimensions of Wilson twist-2 operators in N=4 supersymmetric
Yang-Mills theory. The whole calculation was performed using supersymmetric
Ward identities derived in this paper together with already known QCD results
and does not involve any additional calculation of diagrams. We also considered
one particular limit of our result, which could potentially be interesting in
the context of AdS/CFT correspondence.


title: Proton Decay in a Minimal SUSY SO(10) Model for Neutrino Mixings

abstract:
  A minimal renormalizable SUSY SO(10) model with B-L symmetry broken by {\bf
126} Higgs field has recently been shown to predict all neutrino mixings and
the ratio $\Delta m^2_{\odot}/\Delta m^2_A$ in agreement with observations.
Unlike models where B-L is broken by {\bf 16} Higgs, this model guarantees
automatic R-parity conservation and hence a stable dark matter as well as the
absence of dim=4 baryon violating operator without any additional symmetry
assumptions. In this paper, we discuss the predictions of the model for proton
decay induced at the GUT scale. We scan over the parameter space of the model
allowed by neutrino data and find upper bounds on the partial lifetime for the
modes $\tau(n\to \pi^0\bar{\nu})=~2\tau(p\to \pi^+\bar{\nu})\leq (5.7-13)\times
10^{32}$ yrs and $\tau(n\to K^0\bar{\nu})\leq 2.97\times 10^{33}$ yrs for the
average squark mass of a TeV and wino mass of 200 GeV, when the parameters
satisfy the present lower limits on $\tau(p\to K^+\bar{\nu})$ mode. These
results can be used to test the model.


title: Parity of Anti-Decuplet Baryons Revisited from Chiral Soliton Models

abstract:
  We recalculate masses and widths of anti-decuplet baryons in the case of
positive parity from chiral soliton models, provided that the member
$\Xi_{3/2}$ of the anti-decuplet has a mass 1.86 GeV as reported recently.
Calculations show that there are no convincing candidates for the nonexotic
members of the anti-decuplet available in the baryon listings. Up to the
leading order of $m_s$ and 1/$N_c$, the width formula for the decay of the
anti-decuplet baryons to the octet depends only on SU(3) symmetry
model-independently, except the coupling constant. Similarly we give a width
formula for the decay of negative parity baryons belong to certain SU(3) baryon
multiplet by pure symmetry consideration. By this formula, we find that if we
have an anti-decuplet with negative parity and that the masses are the same as
those given by chiral soltion models, the identification of N(1650) as
$N_{\bar{10}}$ are inconsistent with experiments for $N(1650)\to N\pi$ while
the widths agree with other two decay channels involving strangeness. And
$\Sigma(1750)$ seems to be a reasonable candidate for $\Sigma_{\bar{10}}$.


title:
Flavor and CP violating Z exchange and the rate asymmetry in B --> phi
  K_S

abstract:
  Recent measurements of time dependent CP asymmetry in B --> phi K_S, if
confirmed, would indicate a new source of CP violation. We examine flavor
violating tree-level Z currents in models with extra down-type quark singlets
that arise naturally in string compactified gauge groups like E_6. We evaluate
the new operators at the scale mu = m_b in NLO, and using QCD improved
factorization to describe B --> phi K_S, find the allowed range of parameters
for rho and psi, the magnitude and phase of the flavor violating parameter
U_{bs}. This allowed range does satisfy the constraint from flavor changing
process b --> s l+ l- . However, further improvement in measurement of these
rates could severely constrain the model.


title:
Localizable Effective Theories, Bootstrap and the Parameters of Hadron
  Resonances

abstract:
  We discuss the basic principles of constructing a meaningful perturbative
scheme for effective theory. The main goal of this talk is to explain the
approach and to present recent results obtained with the help of the method of
Cauchy forms in several complex variables.


title: Bootstrap and the Parameters of Pion-Nucleon Resonances

abstract:
  In this talk we demonstrate the results of application of the perturbative
effective theory formalism developed in recent papers to the calculation of
$\pi N$ elastic scattering amplitude. Restrictions on the contributing
resonance parameters are obtained and the low energy coefficients are
calculated.


title:
Factorization of heavy-to-light form factors in soft-collinear effective
  theory

abstract:
  Heavy-to-light transition form factors at large recoil energy of the light
meson have been conjectured to obey a factorization formula, where the set of
form factors is reduced to a smaller number of universal form factors up to
hard-scattering corrections. In this paper we extend our previous investigation
of heavy-to-light currents in soft-collinear effective theory to final states
with invariant mass Lambda^2 as is appropriate to exclusive B meson decays. The
effective theory contains soft modes and two collinear modes with virtualities
of order m_b*Lambda (`hard-collinear') and Lambda^2. Integrating out the
hard-collinear modes results in the hard spectator-scattering contributions to
exclusive B decays. We discuss the representation of heavy-to-light currents in
the effective theory after integrating out the hard-collinear scale, and show
that the previously conjectured factorization formula is valid to all orders in
perturbation theory. The naive factorization of matrix elements in the
effective theory into collinear and soft matrix elements may be invalidated by
divergences in convolution integrals. In the factorization proof we circumvent
the explicit regularization of endpoint divergences by a definition of the
universal form factors that includes hard-collinear, collinear and soft
effects.


title: Dynamics of MSSM flat directions consisting of multiple scalar fields

abstract:
  Although often chosen because of simplicity, a single scalar field does not
provide a general parametrization of an MSSM flat direction. We derive a
formalism for a class of gauge invariant polynomials which result in a
multifield description of the flat directions. In contrast to the single field
case, the vanishing of the gauge currents yields an important dynamical
constraint in the multifield framework. We consider in detail the example of
the H_uL flat direction and study the dynamical evolution during and after
inflation. We highlight the differences between the single and the multifield
flat directions. We show that in the multifield case the field space has an
intrinsic curvature and hence unsuppressed non-minimal kinetic terms for the
flat direction scalars arise. Also the phases of the individual components
non-trivially right after inflation, charging the components of the condensate
and producing an enhanced entropy after the decay of the condensate, which is
due to cross-coupling of different lepton flavours in the F term. However, the
qualitative features of the single field Affleck-Dine baryogenesis, such as the
produced total charge, remain largely unchanged.


title: Sparticle Masses in Product-Group Gauge Theories

abstract:
  In this paper, we investigate a possibility to cause supersymmetry breaking
with background modulus fields in product-group gauge theories. The vacuum
expectation values of these moduli are found to satisfy several relations and
the moduli dependences of the action are fixed by consistency of the model.
With this action, we calculate the mass spectrum of vector and matter
multiplets up to one-loop order of perturbation theory. As an application of
the result, it is found that various properties of higher-dimensional
supersymmetry breaking are well captured in corresponding limits in the moduli
space. In particular, we have finite radiative corrections to Higgs masses in
the case that is closely related to the boundary condition breaking of
supersymmetry.


title: Top Squarks and Bottom Squarks in the MSSM with Complex Parameters

abstract:
  We present a phenomenological study of top squarks (~t_1,2) and bottom
squarks (~b_1,2) in the Minimal Supersymmetric Standard Model (MSSM) with
complex parameters A_t, A_b, \mu and M_1. In particular we focus on the CP
phase dependence of the branching ratios of (~t_1,2) and (~b_1,2) decays. We
give the formulae of the two-body decay widths and present numerical results.
We find that the effect of the phases on the (~t_1,2) and (~b_1,2) decays can
be quite significant in a large region of the MSSM parameter space. This could
have important implications for (~t_1,2) and (~b_1,2) searches and the MSSM
parameter determination in future collider experiments. We have also estimated
the accuracy expected in the determination of the parameters of ~t_i and ~b_i
by a global fit of the measured masses, decay branching ratios and production
cross sections at e^+ e^- linear colliders with polarized beams. Analysing two
scenarios, we find that the fundamental parameters apart from A_t and A_b can
be determined with errors of 1% to 2%, assuming an integrated luminosity of 1
ab^-1 and a sufficiently large c.m.s. energy to produce also the heavier ~t_2
and ~b_2 states. The parameter A_t can be determined with an error of 2 - 3%,
whereas the error on A_b is likely to be of the order of 50%.


title:
Mean-field expansion and meson effects in chiral condensate of
  analytically regularized Nambu -- Jona-Lasinio model

abstract:
  Scalar meson contributions in chiral quark condensate are calculated for
analytically regularized Nambu -- Jona-Lasinio model in framework of mean-field
expansion in bilocal-source formalism. Sigma-meson contribution for physical
values of parameters is found to be small. Pion contribution is found to be
significant and should be taken into account at the choice of the parameter
values.


title: Spin effects in vector meson and $Q \bar Q$ production

abstract:
  We study light hadron leptoproduction at small $x$. Vector meson production
is analysed in terms of generalized gluon distributions with taking into
account the transverse quark motion. Within a two-gluon model the double spin
asymmetries for longitudinally polarized leptons and transversely polarized
protons in the diffractive $Q \bar Q$ production are investigated. The
predicted $A_{lT}$ asymmetry is large and can be used to obtain information on
the polarized gluon distributions in the proton.


title: Meson production in nucleon--nucleon collisions close to the threshold

abstract:
  The last decade has witnessed great experimental progress that has led to
measurements of cross sections--polarized as well as unpolarized--of of high
accuracy in several $NN \to NNx$ reaction channels. These data, naturally, pose
challenges to theorists to develop methods by which they can be understood and
explained in commensurate detail.
  In this work we review the status of the theory with special emphasis on
model--independent methods. We discuss in detail not only the many observables
involved in the reactions, but also the physical questions that can be
addressed by studying them in the various reaction channels. The special
advantages of nucleon--nucleon induced reactions are stressed. Foremost among
these is the use of the initial and final states as a spin/isospin filter. This
opens, for example, a window into the spin dependence of the hyperon--nucleon
interaction and the dynamics of the light scalar mesons.


title: Photon Emission from Dense Quark Matter

abstract:
  Thermal emission rates and mean free paths of photons in a color-flavor
locked (CFL) phase of quark matter at high densities and moderate temperatures
are evaluated. Our calculations are based on a low-energy effective theory for
CFL matter describing Goldstone boson excitations and their electromagnetic as
well as strong interactions. In-medium coupling strengths of vector mesons are
found to be smaller than in vacuum. As a consequence of in-medium modified pion
dispersion relations, novel processes such as pi+ pi- -> gamma and gamma -> pi+
pi- become possible. The total photon emissivity is found to be very large,
exceeding contributions from thermal e+ e- annihilation above temperatures of
about 5 MeV. At the same time, the corresponding mean free paths become very
small. Our results imply that the photon flux from the surface of a
(hypothetical) CFL star in its early hot stages saturates the black-body limit.
Estimates for the early thermal evolution of the star are also presented.


title: Jet Tomography Studies in AuAu Collision at RHIC Energies

abstract:
  Recent RHIC results on pion production in AuAu collision at sqrt(s)=130 and
200 AGeV display a strong suppression effect at high p_T. This suppression can
be connected to final state effects, namely jet energy loss induced by the
produced dense colored matter. Applying our pQCD-based parton model we perform
a quantitative analysis of the measured suppression pattern and determine the
opacity of the produced deconfined matter.


title: Theoretical Predictions for Collider Searches

abstract:
  I review recent developments in extensions of the Standard Model that address
the question of electroweak symmetry breaking and discuss how these theories
can be tested at future colliders.


title:
Factorization and the Soft Overlap Contribution to Heavy-to-Light Form
  Factors

abstract:
  Using the formalism of soft-collinear effective theory, a complete separation
of short- and long-distance contributions to heavy-to-light transition form
factors at large recoil is performed. The universal functions $\zeta_M(E)$
parameterizing the ``soft overlap'' contribution to the form factors are
defined in terms of matrix elements in the effective theory. Endpoint
configurations corresponding to kinematic situations where one of the valence
partons in the external mesons carries very small momentum are accounted for in
terms of operators involving soft-collinear messenger fields. They contribute
at leading order in $\Lambda_{\rm QCD}/E$ and spoil factorization. An analysis
of operator mixing and renormalization-group evolution in the effective theory
reveals that the intermediate scale $\sqrt{E\Lambda}$ is without significance
to the soft functions $\zeta_M(E)$, and that the soft overlap contribution does
not receive a significant perturbative (Sudakov) suppression.


title:
Confinement and U(1,3) symmetry of color particles in a complex phase
  space

abstract:
  It is shown that a universal confining potential for hadron constituents can
be obtained with the help of U(1,3) symmetry in a complex phase space.
Parameters of this potential are determined on the basis of spectroscopic data
for hadrons and results of lattice QCD calculations. We argue that the account
of the U(1,3) symmetry is important for a description of strong interactions of
quarks and gluons in a nonperturbative QCD domain at large interaction
distances.


title: Gauge boson fusion as a probe of inverted hierarchies in supersymmetry

abstract:
  Supersymmetric scenarios with inverted mass hierarchy can be hard to observe
at a hadron collider, particularly for the non-strongly interacting sector. We
show how the production of stau-pairs via gauge boson fusion, along with hard
jets in the high rapidity region, can be instrumental in uncovering the
signatures of such scenarios. We demonstrate this both in a model-independent
way and with reference to some specific, well-motivated models.


title: Universality of Yukawa Couplings Confronts Recent Neutrino Data

abstract:
  We propose a flavour structure for the leptonic sector of the Standard Model,
based on the idea of universality of Yukawa couplings, which accommodates all
the experimental data on neutrino masses and mixing, at the same time
predicting specific correlations between low energy measurable quantities, such
as the ratio of neutrino squared mass differences, $|U_{13}|$, the leptonic
Dirac phase, and the double-beta decay mass parameter. We also point out that
it is possible, in this framework, to generate a sufficient amount of baryon
asymmetry of the Universe through leptogenesis.


title: The Minimal Supersymmetric Fat Higgs Model

abstract:
  We present a calculable supersymmetric theory of a composite ``fat'' Higgs
boson. Electroweak symmetry is broken dynamically through a new gauge
interaction that becomes strong at an intermediate scale. The Higgs mass can
easily be 200-450 GeV along with the superpartner masses, solving the
supersymmetric little hierarchy problem. We explicitly verify that the model is
consistent with precision electroweak data without fine-tuning. Gauge coupling
unification can be maintained despite the inherently strong dynamics involved
in electroweak symmetry breaking. Supersymmetrizing the Standard Model
therefore does not imply a light Higgs mass, contrary to the lore in the
literature. The Higgs sector of the minimal Fat Higgs model has a mass spectrum
that is distinctly different from the Minimal Supersymmetric Standard Model.


title:
Radiative Corrections to the Neutron Beta-decay within the Standard
  Model

abstract:
  Starting with the basic Lagrangian of the Standard Model, the radiative
corrections to the neutron beta-decay are acquired. The electroweak
interactions are consistently taken into consideration amenably to the
Weinberg-Salam theory. The effect of the strong quark-quark interactions on the
neutron beta-decay is parameterized by introducing the nucleon electromagnetic
form factors and the nucleon weak transition current specified by the form
factors g_V, g_A, ... The radiative corrections to the total decay probability
W and to the asymmetry coefficient of the electron momentum distribution A
obtained to constitute \delta W = 8.7%, \delta A = -2% . The contribution to
the radiative corrections due to allowance for the nucleon form factors and the
nucleon exited states amounts up to a few per cent to the whole value of the
radiative corrections. The ambiguity in description of the nucleon
compositeness is this surely what causes the uncertainties ~0.1% in evaluation
of the neutron beta-decay characteristics. For now, this puts bounds to the
precision attainable in obtaining the element V_ud of the CKM matrix and the
g_V, g_A, ... values from experimental data processing.


title:
Linear Collider Capabilities for Supersymmetry in Dark Matter Allowed
  Regions of the mSUGRA Model

abstract:
  Recent comparisons of minimal supergravity (mSUGRA) model predictions with
WMAP measurements of the neutralino relic density point to preferred regions of
model parameter space. We investigate the reach of linear colliders (LC) with
$\sqrt{s}=0.5$ and 1 TeV for SUSY in the framework of the mSUGRA model. We find
that LCs can cover the entire stau co-annihilation region provided $\tan\beta
\alt 30$. In the hyperbolic branch/focus point (HB/FP) region of parameter
space, specialized cuts are suggested to increase the reach in this important
``dark matter allowed'' area. In the case of the HB/FP region, the reach of a
LC extends well past the reach of the CERN LHC. We examine a case study in the
HB/FP region, and show that the MSSM parameters $\mu$ and $M_2$ can be
sufficiently well-measured to demonstrate that one would indeed be in the HB/FP
region, where the lightest chargino and neutralino have a substantial higgsino
component.


title: Neutrino Mass Models in Extra Dimensions

abstract:
  Neutrinos play a crucial role in many areas of physics from very short
distances to astrophysics and cosmology. It is a long held believe that they
are good probes of physics at the GUT scale. Recent developments have made it
clear that they can also be of fundamental importance for the physics of extra
dimensions if these exist. Here we pedagogically review the construction of
neutrino mass models in extra dimensions within the brane world scenarios.
These models are usually nontrivial generalizations of their four dimensional
counterparts. We describe the theoretical tools that have been forged and the
new perpectives gained in this rapidly developing area. In particular we
discuss the issues involve in building models without the use of right-handed
singlets. It is very difficult to directly test the origin of neutrino masses
in different models be it in four or more dimensions. We point out that
different models give very different indirect signatures in the TeV region and
in precision measurements.


title: Lepton-flavor mixing and $K \to \pi \nu\bar\nu$ decays

abstract:
  The impact of possible sources of lepton-flavor mixing on $K \to \pi
\nu\bar\nu$ decays is analysed. At the one-loop level lepton-flavor mixing
originated from non-diagonal lepton mass matrices cannot generate a
CP-conserving $K_L \to \pi^0\nu\bar\nu$ amplitude. The rates of these modes are
sensitive to leptonic flavor violation when there are at least two different
leptonic mixing matrices. New interactions that violate both quark and lepton
universalities could enhance the CP-conserving component of $\Gamma(K_L \to
\pi^0\nu\bar\nu)$ and have a substantial impact. Explicit examples of these
effects in the context of supersymmetric models, with and without R-parity
conservation, are discussed.


title: An Appearance-Like Reactor Experiment To Measure Ue3

abstract:
  Conventional reactor neutrino experiments are dissapearance experiments, and
thus have less sensitivity to small mixing angles than appearance experiments
do. It has been recently shown that future reactor neutrino experiments
consisiting of a near and far detector are competitive with first-generation
superbeams in order to determine sin^2{2 theta_{13}} down to 10^{-2}. We show
that by using the antineutrino-electron elastic scattering at the near detector
around the configuration where dsigma^{bar{\nu}_e}/dT presents a dynamical
zero, an appearance-like experiment can be simulated, with a sensitivity
comparable to the one achieved with the inverse beta-decay reaction in the far
detector. Thus, the near detector could also be used to look for oscillations.
We present how antineutrino-electron elastic scattering could be properly used
for this purpose allowing that the combination of the measurements in the far
detector and in the near detector would push the sensitivity of the experiment
to a lower value of theta_{13}.


title: QCD Physics Opportunities in Low-Energy Electron-Positron Annihilation

abstract:
  I survey a number of interesting tests of quantum chromodynamics at the
amplitude level which can be carried out in electron-positron annihilation and
in photon-photon collisions at low energy, including measurements of
fundamental processes such as timelike form factors and transition amplitudes,
timelike Compton scattering, timelike photon to meson transition amplitudes,
and two-photon exclusive processes. Many of these reactions test basic
principles of QCD such as hadronization at the amplitude level, factorization,
and hadron helicity conservation, tools also used in the analysis of exclusive
$B$ and $D$ decays. Measurements of the final-state polarization in hadron pair
production determine the relative phase of the timelike form factors. The role
of two-photon exchange amplitudes can be tested using the charge asymmetry of
the $e^+ e^- \to B \bar B$ processes. Precision measurements of the
electron-positron annihilation cross section can test the generalized Crewther
relation and determine whether the effective couplings defined from physical
measurements show infrared fixed-point and near conformal behavior. I also
discuss a number of tests of novel QCD phenomena accessible in $e^+ e^-$
annihilation, including near-threshold reactions, the production of baryonium,
gluonium states, and pentaquarks.


title:
Gravireggeons in Extra Dimensions and Interaction of Ultra-high Energy
  Cosmic Neutrinos with Nucleons

abstract:
  We present the results on non-perturbative quantum gravity effects related to
extra dimensions which can be comparable, in some cases, with the SM
contributions, e.g. in lepton-lepton or lepton-nucleon scattering. The case of
cosmic neutrino gravitational interaction with atmospheric nucleons is
considered in detail.


title: Realisation of chiral symmetry in the domain model of QCD

abstract:
  The domain model for the QCD vacuum has previously been developed and shown
to exhibit confinement of quarks and strong correlation of the local chirality
of quark modes and duality of the background domain-like gluon field. Quark
fluctuations satisfy a chirality violating boundary conditions parametrized by
a random chiral angle $\alpha_j$ on the $j-th$ domain. The free energy of an
ensemble of $N\to\infty$ domains depends on $\{\alpha_j, j=1... N\}$ through
the logarithm of the quark determinant. Its parity odd part is given by the
axial anomaly. The anomaly contribution to the free energy suppresses
continuous axial U(1) degeneracy in the ground state, leaving only a residual
axial Z(2) symmetry. This discrete symmetry and flavour $SU(N_f)_L\times
SU(N_f)_R$ chiral symmetry in turn are spontaneously broken with a quark
condensate arising due to the asymmetry of the spectrum of Dirac operator. In
order to illustrate the splitting between the $\eta'$ from octet pseudoscalar
mesons realised in the domain model, we estimate the masses of light
pseudoscalar and vector mesons.


title:
Suppression of high transverse momentum hadrons at RHIC by (pre-)
  hadronic final state interactions

abstract:
  We investigate transverse hadron spectra from proton+proton, deuteron+Au and
Au+Au collisions at sqrt{s}=200 GeV and 17.3 GeV within the
Hadron-String-Dynamics (HSD) approach which is based on quark, diquark, string
and hadronic degrees of freedom as well as Pythia calculations for the high pT
spectra. The comparison to experimental data on transverse mass spectra from
p+p, d+Au and Au+Au reactions shows that pre-hadronic effects are responsible
for both the hardening of the spectra for low transverse momenta (Cronin
effect) as well as the suppression of high pT hadrons. The interactions of
formed hadrons are found to be negligible in central Au+Au collisions at
sqrt{s}=200 GeV for pT\geq 6 GeV/c, but have some importance for the shape of
the ratio R_{AA} at lower pT values (\leq 6 GeV/c). The large suppression seen
experimentally is attributed to the inelastic interactions of 'leading'
pre-hadrons with the dense environment, which could be partly of colored
partonic nature in order to explain the large attenuation seen in most central
Au+Au collisions.


title: Pion radii in nonlocal chiral quark model

abstract:
  The electromagnetic radius of the charged pion and the transition radius of
the neutral pion are calculated in the framework of the nonlocal chiral quark
model. It is shown in this model that the contributions of vector mesons to the
pion radii are noticeably suppressed in comparison with a similar contribution
in the local Nambu--Jona-Lasinio model. The form-factor for the process
gamma*pi+pi- is calculated for the -1 GeV^2<q^2<1.6 GeV^2. Our results are in
satisfactory agreement with experimental data.


title: On the CVC problem in tau-decay

abstract:
  The preliminary results of PIBETA experiment strongly suggest the presence of
non V-A anomalous interactions in the radiative pion decay. We assume that they
arise as a result of the exchange of new intermediate chiral spin-1 bosons
which interact anomalously with matter. Their contribution into the tau-decay
leads to violation of the CVC hypothesis at the same level as detected
experimentally.


title:
B_s^0 - bar{B}_s^0 Mixing and the B_s -> J/psi phi Asymmetry in
  Supersymmetric Models

abstract:
  We analyse supersymmetric contributions to B_s mixing and their impact on
mixing-induced CP asymmetries, using the mass insertion approximation. We
discuss in particular the correlation of SUSY effects in the CP asymmetries of
B_s -> J/psi phi and B_d -> phi K_S and find that the mass insertions dominant
in B_s mixing and B_d -> phi K_S are (delta_{23}^d)_{LL, RR} and
(delta_{23}^d)_{LR, RL}, respectively. We show that models with dominant
(delta_{23}^d)_{LR, RL} can accomodate a negative value of S_{phi K_S}, in
agreement with the BELLE measurement of that observable, but yield a B_s mixing
phase too small to be observed. On the other hand, models with dominant
(delta_{23}^d)_{LL, RR} predict sizeable SUSY contributions to both Delta M_s
and the mixing phase, but do not allow the asymmetry in B_d -> phi K_S to
become negative, except for small values of the average down squark mass,
which, in turn, entail a value of Delta M_s too large to be observed at the
Tevatron and the LHC. We conclude that the observation of B_s mixing at hadron
machines, together with the confirmation of a negative value of S_{phi K_S},
disfavours models with a single dominant mass insertion.


title:
Leptogenesis in seesaw models with a twofold-degenerate neutrino Dirac
  mass matrix

abstract:
  We study leptogenesis in two seesaw models where maximal atmospheric neutrino
mixing and $U_{e3} = 0$ result from symmetries. Salient features of those
models are the existence of three Higgs doublets and a twofold degeneracy of
the neutrino Dirac mass matrix. We find that in those models both leptogenesis
and neutrinoless double beta decay depend on the same unique Majorana phase.
Leptogenesis can produce a baryon asymmetry of the universe of the right size
provided the mass of the heavy neutrino whose decays generate the lepton
asymmetry is in the range $10^{11}$--$10^{12} \mathrm{GeV}$. Moreover, in these
models, leptogenesis precludes an inverted neutrino mass spectrum since it
requires the mass of the lightest neutrino to be in the range
$10^{-3}$--$10^{-2} \mathrm{eV}$.


title: The anomaly-induced effective action and natural inflation

abstract:
  The anomaly-induced inflation (modified Starobinsky model) is based on the
application of the effective quantum field theory approach to the Early
Universe. We present a brief general review of the model and show that it does
not require a fine-tuning for the parameters of the theory or initial data,
gives a real chance to meet a graceful exit to the FRW phase and also has
positive features with respect to the metric perturbations.


title:
Understanding the $e^+e^-\to D^{(*)+}D^{(*)-}$ processes observed by
  Belle

abstract:
  We calculate the production cross sections for $D^{*+}D^{*-}$, $D^+D^{*-}$
and $D^+D^-$ in $e^+e^-$ annihilation through one virtual photon in the
framework of perturbative QCD with constituent quarks. The calculated cross
sections for $D^{*+}D^{*-}$ and $D^+D^{*-}$ production are roughly in agreement
with the recent Belle data. The helicity decomposition for $D^{*}$ meson
production is also calculated. The fraction of the $D^{*\pm}_LD^{*\mp}_T$ final
state in $e^+e^-\to D^{*+}D^{*-}$ process is found to be 65%. The fraction of
$DD^*_T$ production is 100% and $DD^*_L$ is forbidden in $e^+e^-$ annihilation
through one virtual photon. We further consider $e^+e^-$ annihilation through
two virtual photons, and then find the fraction of $DD^{*}_T$ in $e^+e^-\to
DD^{*}$ process to be about 91%.


title: Inelastic Black Hole Production and Large Extra Dimensions

abstract:
  Black hole production in elementary particle collisions is among the most
promising probes of large extra spacetime dimensions. Studies of black holes at
particle colliders have assumed that all of the incoming energy is captured in
the resulting black hole. We incorporate the inelasticity inherent in such
processes and determine the prospects for discovering black holes in colliders
and cosmic ray experiments, employing a dynamical model of Hawking evolution.
At the Large Hadron Collider, inelasticity reduces rates by factors of 10^3 to
10^6 in the accessible parameter space, moderating, but not eliminating, hopes
for black hole discovery. At the Pierre Auger Observatory, rates are suppressed
by a factor of 10. We evaluate the impact of cosmic ray observations on
collider prospects.


title:
Pion Form Factor Phase, PIon Pion Elasticity and New Electron-Positron
  Data

abstract:
  New precise data on the low energy electron-positron annihilation into
hadrons from Novosibirsk are used to obtain bounds on the elasticity parameter
and the difference between the phase of the pion form factor and that of pion
pion scattering


title: Searching For Dark Matter with Neutrino Telescopes

abstract:
  One of the most interesting mysteries of astrophysics is the puzzle of dark
matter. Although numerous techniques have been explored and developed to detect
this elusive substance, its nature remains unknown. One such method uses large
high-energy neutrino telescopes to look for the annihilation products of dark
matter annihilations. In this summary article, we briefly review this
technique. We describe the calculations used to find the rate of capture of
WIMPs in the Sun or Earth and the spectrum of neutrinos produced in the
resulting dark matter annihilations. We will discuss these calculations within
the context of supersymmetry and models with universal extra dimensions, the
lightest supersymmetric particle and lightest Kaluza-Klein particle providing
the WIMP candidate in these cases, respectively. We will also discuss the
status of some of the experiments relevant to these searches: AMANDA, IceCube
and ANTARES.


title: Recent Results on the Transverse Lattice

abstract:
  We review recent progress of field theory on a transverse lattice including:
realistic calculations of pion structure in large-N_c QCD; fermion doubling and
chiral symmetry; a new strong coupling limit; supersymmetry on the transverse
lattice; lightcone zero-mode analysis.


title:
Electromagnetic form factor of the pion in the space- and time-like
  regions within the front-form dynamics

abstract:
  The pion electromagnetic form factor is calculated in the space- and
time-like regions from -10 $(GeV/c)^2$ up to 10 $(GeV/c)^2$, within a
front-form model. The dressed photon vertex where a photon decays in a
quark-antiquark pair is depicted generalizing the vector meson dominance
ansatz, by means of the vector meson vertex functions. An important feature of
our model is the description of the on-mass-shell vertex functions in the
valence sector, for the pion and the vector mesons, through the front-form wave
functions obtained within a realistic quark model. The theoretical results show
an excellent agreement with the data in the space-like region, while in the
time-like region the description is quite encouraging.


title: On the Recent Results of E835 Experiment at FNAL

abstract:
  In this note we briefly concern several recent results of E835 Experiment at
FNAL that are discussed in the framework of unified picture on hadronic spectra
elaborated in our early works. It has been established that new E835
Collaboration results provided an additional excellent confirmation of our
theoretical conception.


title: Charm physics: theoretical review

abstract:
  We review recent developments in charm physics, focusing on the physics of
charmed mesons. We discuss charm spectroscopy, decay constants, as well as
searches for new physics with charmed mesons. We discuss D0-anti-D0 mixing and
CP-violation in charm decays. We also present the modified Nelson plot of charm
mixing predictions.


title: A "BPS expansion" for B and D mesons

abstract:
  We analyze consequences of the approximation \mu_\pi^2 -\mu_G^2 << \mu_\pi^2
(a `BPS' limit) for B and D mesons. It is shown that neglecting perturbative
effects many power corrections would vanish to all orders in 1/m_Q, in
particular those violating heavy flavor symmetry. Among them are corrections to
B->D formfactors. A number of relations receive corrections only to the second
order expanding around the BPS limit to any order in 1/m_Q, including both f_+
and f_- at zero recoil. This allows an accurate evaluation of {\cal F}_+ for
B->D l\nu. Its perturbative renormalization is computed analytically in the
required Wilsonian scheme, yielding the dominant 3% enhancement.


title: Disformal Inflation

abstract:
  We show how short inflation naturally arises in a non-minimal gravity theory
with a scalar field without any potential terms. This field drives inflation
solely by its derivatives, which couple to the matter only through the
combination $\bar g_{\mu\nu} = g_{\mu\nu} - \frac{1}{m^4} \partial_\mu \phi
\partial_\nu \phi$. The theory is free of instabilities around the usual
Minkowski vacuum. Inflation lasts as long as $\dot \phi^2 > m^4$, and
terminates gracefully once the scalar field kinetic energy drops below $m^4$.
The total number of e-folds is given by the initial inflaton energy $\dot
\phi_0^2$ as ${\cal N} \simeq \frac13 \ln(\frac{\dot \phi_0}{m^2})$. The field
$\phi$ can neither efficiently reheat the universe nor produce the primordial
density fluctuations. However this could be remedied by invoking the curvaton
mechanism. If inflation starts when $\dot \phi^2_0 \sim M^4_P$, and $m \sim
m_{EW} \sim TeV$, the number of e-folds is ${\cal N} \sim 25$. Because the
scale of inflation is low, this is sufficient to solve the horizon problem if
the reheating temperature is $T_{RH} \ga MeV$. In this instance, the leading
order coupling of $\phi$ to matter via a dimension-8 operator
$\frac{1}{m^4}\partial_\mu \phi \partial_\nu \phi ~ T^{\mu\nu}$ would lead to
fermion-antifermion annihilation channels $f\bar f \to \phi \phi$ accessible to
the LHC, while yielding very weak corrections to the Newtonian potential and to
supernova cooling rates, that are completely within experimental limits.


title:
Spin Alignment of Vector Mesons in Polarized and Unpolarized High Energy
  Reactions

abstract:
  Recent e+e- annihilation experiments show a striking spin alignment of vector
mesons produced in the fragmentation of a polarized quark.We show that these
data imply a simple relation between the polarization of the anti-quark, which
is produced in the fragmentation process to combine with the fragmenting quark
to form the meson, and that of the fragmenting quark. After having obtained a
good fit to the e+e- data, we extend the calculations to lepton-nucleon and
nucleon-nucleon collisions with polarized beams. We also discuss the relation
between the spin alignment of vector meson in unpolarized hadron-hadron
collisions and the single-spin left-right asymmetry. We make predictions for
the polarization of the vector mesons in these reactions which can be checked
by future experiments.


title:
Quantum fluctuations of chiral condensate in the analytically
  regularized Nambu--Jona-Lasinio model

abstract:
  The problem of quantum fluctuations of the chiral condensate due to
next-to-leading contributions is investigated. Meson contributions to the
chiral condensate are calculated in the Nambu--Jona-Lasinio model with the
analytical (dimensional) regularization in a framework of the mean-field
expansion. The pion contribution can be significant, while the sigma-meson
contribution is small in the regime of physical values of the model parameters.
Non-pole contributions are also estimated and found to be small.


title:
Four-fermion Interaction Model in a Constant Magnetic Field at Finite
  Temperature and Chemical Potential

abstract:
  We investigate an influence of an external magnetic field on chiral symmetry
breaking in a four-fermion interaction model at finite temperature and chemical
potential. By using the Fock-Schwinger proper-time method, we calculate the
effective potential for the four-fermion interaction model at the leading order
of the $1/N_c$ expansion. A phase structure of the chiral symmetry breaking is
shown on $T$-$\mu$, $H$-$T$ and $\mu$-$H$ planes. The external magnetic field
modifies the phase structure. It is found that a new phase appears for a large
chemical potential.


title: A lattice perspective of kaon phenomenology

abstract:
  I review recent lattice computations of the matrix element relevant for
K0-K0bar mixing and discuss the advantages of fermions with an exact chiral
symmetry to compute K->pipi amplitudes.


title: Leptogenesis and a Jarlskog Invariant

abstract:
  The relation between low energy CP violating phases, and the CP asymmetry of
leptogenesis, $\epsilon$, is investigated. Although it is known that in general
those are independent, there may be a relation when a model is specified. We
construct a Jarlskog invariant which is proportional to $\epsilon$ if the
right-handed neutrino masses are hierarchical. Since the invariant can be
expressed in terms of left-handed neutrino parameters--some measurable, and
some not--it is useful in identifying the limits in which $\epsilon$ is related
to MNS phases.


title: Impact of Neutrino Oscillation Measurements on Theory

abstract:
  Neutrino oscillation data had been a big surprise to theorists, and indeed
they have ongoing impact on theory. I review what the impact has been, and what
measurements will have critical impact on theory in the future.


title:
Isolated photon + jet photoproduction as a tool to constrain the gluon
  distribution in the proton and the photon

abstract:
  We analyse how the reaction gamma p -> gamma + jet + X can serve to constrain
the gluon distributions. Our results are based on a code of partonic event
generator type which includes full NLO corrections. We conclude that there are
phase space domains in which either the gluon in the photon or the gluon in the
proton give important contributions to the cross section, which should be
observable in HERA experiments.


title: Photon polarization in $B\to K_{\rm res}\gamma$

abstract:
  In this talk, I introduce recently proposed method for measuring the photon
polarization in $B\to K_{\rm res}\gamma$. It is also shown that anomalous
right-handed top couplings can severely affect the photon polarization without
spoiling the well measured branching ratio of $B\to X_s\gamma$. Estimated
number of $B$ mesons needed for measuring the photon polarization is already
within the reach of current $B$ factories.


title: Detecting Solar Neutrino Flares and Flavors

abstract:
  Intense solar flares originated in sun spots produce high energy particles
(protons, $\alpha$) well observable by satellites and ground-based detectors.
The flare onset produces signals in different energy bands (radio, X, gamma and
neutrons). The most powerful solar flares as the ones occurred on 23 February
1956, 29 September 1989 and the more recent on October 28th, and the 2nd, 4th,
13th of November 2003 released in sharp times the largest flare energies
(${E}_{FL} \simeq {10}^{31}\div {10}^{32} erg). The high energy solar flare
protons scatter within the solar corona and they must be source of a prompt
neutrino burst through the production of charged pions. Later on, solar flare
particles hitting the atmosphere may marginally increase the atmospheric
neutrino flux. The prompt solar neutrino flare may be detected in the largest
underground $\nu$ detectors. Our estimate for the October - November 2003 solar
flares gives a number of events above the unity. The electron/muon $\nu$
signals and spectra may reflect the neutrino flavour mixing. A surprising tau
appearance may occur for a hard {E}_nu_mu}} \to {E}_{{\nu}_{\tau}}\simeq> 4
GeV$) flare spectra.


title: Anomalous Flavor U(1)_X for Everything

abstract:
  We present an ambitious model of flavor, based on an anomalous U(1)_X gauge
symmetry with one flavon, only two right-handed neutrinos and only two mass
scales: M_{grav} and m_{3/2}. In particular, there are no new scales introduced
for right-handed neutrino masses. The X-charges of the matter fields are such
that R-parity is conserved exactly, higher-dimensional operators are
sufficiently suppressed to guarantee a proton lifetime in agreement with
experiment, and the phenomenology is viable for quarks, charged leptons, as
well as neutrinos. In our model one of the three light neutrinos automatically
is massless. The price we have to pay for this very successful model are highly
fractional X-charges which can likely be improved with less restrictive
phenomenological ansatze for mass matrices.


title: Dark Matter Constituents

abstract:
  As cosmology has entered a phase of precision experiments, the content of the
universe has been established to contain interesting and not yet fully
understood components, namely dark energy and dark matter. While the cause and
exact nature of the dark energy remains mysterious, there is greater hope to
connect the dark matter to current models of particle physics. Supersymmetric
models provide several excellent candidates for dark matter, with the lightest
neutralino the prime example. This and other dark matter candidates are
discussed, and prospects for their detection summarized. Some methods of
detection are explained, and indications of signals in present data are
critically examined.


title: The BABAYAGA event generator

abstract:
  The program BABAYAGA is an event generator for QED processes at flavour
factories, mainly intended for luminosity measurement of e+ e- colliders in the
center of mass range 1-10 GeV. Recently, the pi+ pi- channel has been added as
well. The relevant (photonic) radiative corrections are simulated by means of a
Parton Shower in QED. The theoretical precision of the approach is estimated
and some phenomenological results are discussed.


title:
Electroweak radiative corrections and the W boson mass at hadron
  colliders

abstract:
  At present and future hadron colliders, the precision physics program started
in the past will be continued. In particular, a precise determination of the W
boson mass will be carried out. This requires the calculation of the radiative
corrections and their implementation in Monte Carlo event generators for data
analysis. In this talk, the status of the calculation of the order alpha
electroweak radiative corrections is reviewed and a study of the impact of
higher order QED corrections on the W boson mass is presented.


title:
Theoretical uncertainties on alpha_s from event-shape variables in e+e-
  annihilations

abstract:
  The precision of measurements of the strong coupling constant using
event-shape variables in e+e- annihilations is limited by theoretical
systematic uncertainties. The uncertainties are related to missing higher
orders in the perturbative predictions for the event-shape distributions. A new
method is presented for the assessment of theoretical uncertainties in alpha_s.
This method evaluates the systematic uncertainty of the parameter alpha_s from
the uncertainty of the prediction for the distributions from which it is
extracted. The perturbative uncertainties are calculated on a purely
theoretical basis, without accessing measured distributions. The method is
therefore especially suited for an unbiased combination of results from
different observables or experiments. It is universal and can be applied to
other processes like jet production in deep-inelastic ep scattering or in
hadron collisions.


title: Hadronic contributions to a_\mu below one GeV

abstract:
  I present a method for evaluating the hadronic vacuum polarization
contribution below 1 GeV to a_\mu which relies on analyticity, unitarity and
chiral symmetry, as well as on data. The main advantage is that in the region
just above threshold, where data are either scarce or have large errors, these
theoretical constraints are particularly strong, and therefore allow us to
reduce the uncertainties with respect to a purely data-based evaluation. Some
preliminary numerical results are presented as illustration of the method.


title:
Testing of T-odd, P-even interactions by nonpolarized neutron
  transmission through a nonpolarized nuclear target placed into electric field

abstract:
  A new possibility for the study of time-reversal violation is described. It
consists in measurement of nonpolarized neutron transmission through
nonpolarized nuclear target placed into electric field


title:
Instanton Contribution to the Electro-Magnetic Form Factors of the
  Nucleon

abstract:
  We study the electro-magnetic form factors of the nucleon, from small to
large momentum transfer, in the context of the Instanton Liquid Model (ILM). As
a first step, we analyze the role of single-instanton effects, and show that
they dominate the form factors at large momentum transfer. Then, we go beyond
the single-instanton approximation and perform a calculation to all order in
the 't Hooft interaction. We find that the ILM is in good agreement with the
available experimental data. Based on these results, we argue that instantons
provide a microscopic mechanism that explains the delay of the onset of the
asymptotic perturbative regime, in the electro-magnetic form factors.


title: Physics of the linear collider

abstract:
  This presentation intends to illustrate the specific capabilities of an
e$^+$e$^-$ sub-TeV collider to provide answers on the basic issues in physics:
origin of mass, hierarchy of masses, cosmological problems. Some foreseeable
scenarios are discussed with a possible synergy with LHC.


title:
Anomalous Production of Fourth Family Up Quarks at Future Lepton Hadron
  Colliders

abstract:
  We investigate the production of fourth family up-type quarks using effective
lagrangian approach at future lepton-hadron colliders and study the kinematical
characteristics of the signal with an optimal set of cuts. We obtain the upper
mass limits 500 GeV at THERA and one TeV at Linac $\otimes$ LHC.


title:
Diffractive photon dissociation in the saturation regime from the Good
  and Walker picture

abstract:
  Combining the QCD dipole model with the Good and Walker picture, we formulate
diffractive dissociation of a photon of virtuality Q^2 off a hadronic target,
in the kinematical regime in which Q is close to the saturation scale and much
smaller than the invariant mass of the diffracted system. We show how the
obtained formula compares to the HERA data and discuss what can be learnt from
such a phenomenology. In particular, we argue that diffractive observables in
these kinematics provide useful pieces of information on the saturation regime
of QCD.


title:
Oscillations and leptogenesis: what can we learn about right-handed
  neutrinos?

abstract:
  Inverting the type-I seesaw formula, we reconstruct the mass matrix of the
heavy right-handed neutrinos $N_i$. We analyze how the data on neutrino
oscillations affect the structure of this matrix. Under the assumption of
hierarchical Dirac-type neutrino masses $m_{Di}$, we compute the mixing angles
among $N_i$, their masses $M_i$ and the lepton asymmetries $\epsilon_i$
generated in their decays. Unless special cancellations take place, one finds
$M_i\propto m_{Di}^2$ and the generated baryon-to-photon ratio $\eta_B$ is much
smaller than the observed value. We show that successful baryogenesis via
leptogenesis occurs in a unique special case, which corresponds to mass
degeneracy and maximal mixing of $N_1$ and $N_2$.


title: Associated Production of a Z Boson and a Single Heavy-Quark Jet

abstract:
  The leading-order process for the production of a Z boson and a heavy-quark
jet at hadron colliders is gQ -> ZQ (Q=c,b). We calculate this cross section at
next-to-leading order at the Tevatron and the LHC, and compare it with other
sources of ZQ events. This process is a background to new physics, and can be
used to measure the heavy-quark distribution function.


title: CP Violation in B -> rho pi: New Physics Signals

abstract:
  A Dalitz-plot analysis of Bd(t) -> rho pi -> pi+ pi- pi0 decays allows one to
obtain the CP-violating phase \alpha. In addition, one can extract the various
tree (T) and penguin (P) amplitudes contributing to these decays. By comparing
the measured value of |P/T| with the theoretical prediction, one can detect the
presence of physics beyond the standard model.


title: Geometric interpretation of spinor and gauge vector

abstract:
  In the standard model, electroweak theory is based on chiral gauge symmetry,
which only contains massless fermions and gauge vectors. So the fundamental
field equations are Weyl equations including gauge vectors. We deduced these
Weyl equations without gauge vector from quadric surface in three dimensional
oriented projective geometry. It showed that Weyl equations were equations of
generating lines in the quadric surface. In other word, the geometric
correspondence of spinor is generating lines of quadric surface in momentum
space. It also showed that two spinors would generate a gauge vector. After
this quadric surface was localized, its off-origin generating line would
correspond to global Weyl equation including gauge vector, from which we
deduced the global and local gauge transformation.


title: Atmospheric Neutrinos as a Probe of CPT Violation

abstract:
  We show that atmospheric neutrinos can provide a sensitive and robust probe
of CPT violation (CPTV). We perform realistic event-rate calculations and study
the variations of the ratio of total muon to antimuon survival rates with $L/E$
and $L$ ($L$ $\equiv$ baseline length, $E$ $\equiv$ neutrino energy) in a
detector capable of identifying the muon charge. We demonstrate that
measurements of these ratios when coupled with the significant $L$ and $E$
range which characterizes the atmospheric neutrino spectrum provides a method
of both detecting the presence of such violations and putting bounds on them
which compare very favourably with those possible from a future neutrino
factory.


title: Solar Neutrino Oscillation Parameters after KamLAND

abstract:
  We explore the impact of the data from the KamLAND experiment in constraining
neutrino mass and mixing angles involved in solar neutrino oscillations. In
particular we discuss the precision with which we can determine the the mass
squared difference $\Delta m^2_{solar}$ and the mixing angle $\theta_{solar}$
from combined solar and KamLAND data. We show that the precision with which
$\Delta m^_{solar}$ can be determined improves drastically with the KamLAND
data but the sensitivity of KamLAND to the mixing angle is not as good. We
study the effect of enhanced statistics in KamLAND as well as reduced
systematics in improving the precision. We also show the effect of the SNO salt
data in improving the precision. Finally we discuss how a dedicated reactor
experiment with a baseline of 70 km can improve the $\theta_{solar}$
sensitivity by a large amount.


title: Small -x behavior of the non-singlet and singlet structure functions g_1

abstract:
  Explicit expressions for the non-singlet and singlet structure functions g_1
at the small $x$-region are obtained. They include the total resummation of
double-logarithmic contributions and accounting for the running QCD coupling
effects. We predict that both the non-singlet and singlet g_1 asymptotically ~
x^{- \Delta}, with the singlet intercept
  = 0.86 and being more than twice larger than the non-singlet intercept = 0.4.
The impact of the initial quark and gluon densities on the sign of g_1 at x <<
1 is discussed.


title: Supersymmetric threshold corrections to \Delta m^2_{\odot}

abstract:
  For nearly degenerate neutrinos, quantum corrections can modify the
tree-levelmasses via low energy supersymmetric threshold corrections comparable
to the solar oscillation mass scale. We numerically calculate corrections to
neutrino masses in minimal supergravity (mSugra) and Gauge Mediated
Supersymmetry Breaking (GMSB) scenarios and identify parameter spaces in the
high energy regime for which the solar neutrino mass splitting becomes too
large compared to the LMA solution. We show that such considerations can give
bounds on GMSB and mSugra models which can be useful. On the contrary, if we
start from degenerate mass eigenvalues at the tree level, these threshold
corrections being generation dependent, can also produce the required mass
splitting at solar scale for regions of parameter space.


title:
O(N) linear sigma model beyond the Hartree approximation at finite
  temperature

abstract:
  We study the O(N) linear sigma model with spontaneous symmetry breaking at
finite temperature in the framework of the two-particle point-irreducible
(2PPI) effective action. We go beyond the Hartree approximation by including
the two-loop contribution, i.e., the sunset diagram. A phase transition of
second order is found, whereas it is of first order in the one-loop Hartree
approximation. Furthermore, we show the temperature-dependence of the
variational mass parameters and comment on their relation to the physical sigma
and pion masses.


title:
Coulomb Corrections for Coherent Electroproduction of Vector Mesons:
  Eikonal Approximation

abstract:
  Virtual radiative corrections due to the long range Coulomb forces of heavy
nuclei with charge Z may lead to sizeable corrections to the Born cross section
usually used for lepton-nucleus scattering processes. An introduction and
presentation of the most important issues of the eikonal approximation is
given. We present calculations for forward electroproduction production of rho
mesons in a framework suggested by the VDM (vector dominance model), using the
eikonal approximation. It turns out that Coulomb corrections may become
relatively large. Some minor errors in the literature are corrected.


title: Leptogenesis through direct inflaton decay to light particles

abstract:
  We present a scenario of nonthermal leptogenesis following supersymmetric
hybrid inflation, in the case where inflaton decay to both heavy right handed
neutrino and SU(2)_L triplet superfields is kinematically disallowed. Lepton
asymmetry is generated through the decay of the inflaton into light particles
by the interference of one-loop diagrams with right handed neutrino and SU(2)_L
triplet exchange respectively. We require superpotential couplings explicitly
violating a U(1) R-symmetry and R-parity. However, the broken R-parity need not
have currently observable low-energy signatures. Also, the lightest sparticle
can be stable. Some R-parity violating slepton decays may, though, be
detectable in the future colliders. We take into account the constraints from
neutrino masses and mixing and the preservation of the primordial lepton
asymmetry.


title: Towards a renormalizable standard model without fundamental Higgs scalar

abstract:
  We investigate the possibility of constructing a renormalizable standard
model with purely fermionic matter content. The Higgs scalar is replaced by
point-like fermionic self-interactions with couplings growing large at the
Fermi scale. An analysis of the UV behavior in the point-like approximation
reveals a variety of non-Gaussian fixed points for the fermion couplings. If
real, such fixed points would imply nonperturbative renormalizability and evade
triviality of the Higgs sector. For point-like fermionic self-interactions and
weak gauge couplings, one encounters a hierarchy problem similar to the one for
a fundamental Higgs scalar.


title: Chiral Symmetry and Resonances

abstract:
  A review on the requirements of chiral symmetry on effective quark models is
presented. The connection between the pion Salpeter amplitude and the mass gap
equation is discussed. Hadronic scattering, notably, $\pi\pi$ scattering is
presented. The constraints imposed by chiral symmetry between difractive quark
scattering and quark-quark annihilation is presented. Hadronic coupled channels
as a consequence of quark-quark annihilation are discussed together with the
$^3P_0$ mecahnism. Graphical-rules diagrams are intoduced as a means to
evaluate hadronic coupled channel transition potentials. Their role in finding
transition potentials responsible, in the scalar sector, for low energy
resonances, predicted long ago, and found recently, is also discussed.


title: Generalized Parton Distributions of the Pion

abstract:
  Off-forward structure functions of the pion are investigated in twist-two and
twist-three approximation. A simple model is used for the pion, which allows to
introduce finite size effects, while preserving gauge invariance. Results for
the imaginary parts of the gamma^* pi -> gamma^* pi off-forward amplitude and
of the structure functions are presented. Generalized Callan-Gross relations
are obtained.


title: Indirect Evidence for Neutralinos as Dark Matter

abstract:
  From the relic density measurement by WMAP the WIMP annihilation cross
section can be determined in a model independent way. If the WIMPS are
postulated to be the neutralinos of Supersymmetry, then only a limited region
of the supersymmetric parameter space matches this annihilation cross section.
It is shown that the resulting positrons, antiprotons and gamma rays from the
neutralino annihilation (mainly into b-bbar quark pairs) provide the correct
shape and order of magnitude for the missing gamma and hard positron fluxes in
the Galactic Models and are consistent with antiproton production.


title: Atmospheric neutrinos and nu-mass hierarchy

abstract:
  We discuss the possibility for matter effects in the three-neutrino
oscillations of the atmospheric nu_e (bar{nu}_e) and nu_mu (bar{nu}_mu), driven
by one neutrino mass squared difference, |Delta m2_{31}| >> Delta m2_{21}, to
be observable under appropriate conditions. We derive predictions for the Nadir
angle (theta_n) dependence of the ratio N_mu/N_e of the rates of the mu-like
and e-like multi-GeV events which is particularly sensitive to the Earth matter
effects in the atmospheric neutrino oscillations, and thus to the values of
sin2{theta_{13}} and sin2{theta_{23}}, and also to the type of neutrino mass
spectrum.


title: The Strangeness Signal in Hadron Production at Relativistic Energy

abstract:
  Strangeness enhancement is discussed as a feature specific to relativistic
nuclear collisions which create a fireball of strongly interacting matter at
high energy density. At very high energy this is suggested to be partonic
matter, but at lower energy it should consist of yet unknown hadronic degrees
of freedom. The freeze-out of this high density state to a hadron gas can tell
us about properties of fireball matter. The hadron gas at the instant of its
formation captures conditions directly at the QCD phase boundary at top SPS and
RHIC energy, chiefly the critical temperature and energy density.


title:
Neutrino-less Double Electron Capture - a tool to research for Majorana
  neutrinos

abstract:
  The possibility to observe the neutrino-less double $ \beta $ decay and thus
to prove the Majorana nature of neutrino as well as provide a sensitive measure
of its mass is a major challenge of to-day's neutrino physics. As an attractive
alternative we propose to study the inverse process, the radiative
neutrino-less double electron capture $0 \nu 2EC$. The associated monoenergetic
photon provides a convenient experimental signature. Other advantages include
the favourable ratio of the $0 \nu 2EC$ to the competing $2\nu 2EC$ capture
rates and, very importantly, the existence of coincidence trigger to suppress
the random background. These advantages partly offset the expected longer
lifetimes. Rates for the $0\gamma 2EC$ process are calculated. High Z atoms are
strongly favoured. A resonance enhancement of the capture rates is predicted at
energy release comparable to the $2P-1S$ atomic level difference. The resonance
conditions are likely to be met for decays to excited states in final nuclei.
Candidates for such studies are considered. The experimental feasibility is
estimated and found highly encouraging.


title: The 27-plet Baryons from Chiral Soliton Models

abstract:
  We use the perturbation method to calculate the masses and widths for 27-plet
baryons with spin 3/2 from chiral soliton models. According to the masses and
quantum numbers, we find all the candidates for non-exotic members of 27-plet.
The calculation of the widths shows that these candidates manifest an
approximate symmetry of the 27 representation of the SU(3) group, and the
quantum numbers of $\Xi(1950)$ seem to be $I(J^P)={1/2}({3/2}^+)$. Up to
leading order of the strange quark mass, we find that the exotic members have
widths much larger than those of the anti-decuplet members.


title:
Thermal fluctuations of gauge fields and first order phase transitions
  in color superconductivity

abstract:
  We study the effects of thermal fluctuations of gluons and the diquark
pairing field on the superconducting-to-normal state phase transition in a
three-flavor color superconductor, using the Ginzburg-Landau free energy. At
high baryon densities, where the system is a type I superconductor, gluonic
fluctuations, which dominate over diquark fluctuations, induce a cubic term in
the Ginzburg-Landau free energy, as well as large corrections to quadratic and
quartic terms of the order parameter. The cubic term leads to a relatively
strong first order transition, in contrast with the very weak first order
transitions in metallic type I superconductors. The strength of the first order
transition decreases with increasing baryon density. In addition gluonic
fluctuations lower the critical temperature of the first order transition. We
derive explicit formulas for the critical temperature and the discontinuity of
the order parameter at the critical point. The validity of the first order
transition obtained in the one-loop approximation is also examined by
estimating the size of the critical region.


title: Beyond BFKL

abstract:
  The Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution equation is known to be
``unstable'' with respect to fluctuations in gluon virtuality, transverse
momentum and energy requiring to go beyond the leading order BFKL. Still, these
instabilities point to fruitful improvements of our deep understanding of QCD.
Recent applications to next-leading order and to saturation problems are
outlined.


title:
Pi N sigma-term and chiral-odd twist-3 distribution function e(x) of the
  nucleon in the chiral quark soliton model

abstract:
  The isosinglet combination of the chiral-odd twist-3 distribution function
$e^u(x)+e^d(x)$ of the nucleon has outstanding properties that its first moment
is proportional to the well-known $\pi N$ sigma-term and that it contains a
$\delta$-function singularity at $x=0$. These two features are inseparably
connected in that the above sum rule would be violated, if there is no such a
singularity in $e^u(x)+e^d(x)$. Very recently, we found that the physical
origin of this $\delta$-function singularity can be traced back to the
long-range quark-quark correlation of scalar type, which signals the
spontaneous chiral symmetry breaking of the QCD vacuum. The main purpose of the
present paper is to give complete theoretical predictions for the chiral-odd
twist-3 distribution function $e^a(x)$ of each flavor $a$ on the basis of the
chiral quark soliton model, without recourse to the derivative expansion type
approximation. These theoretical predictions are then compared with the
empirical information extracted from the CLAS data of the semi-inclusive DIS
processes by assuming the Collins mechanism only. A good agreement with the
CLAS data is indicative of a sizable violation of the $\pi N$ sigma-term sum
rule, or equivalently, the existence of a $\delta$-function singularity in
$e^u(x) + e^d(x)$.


title:
ISAJET 7.69: A Monte Carlo Event Generator for pp, $\bar pp$, and
  $e^=e^-$ Reactions

abstract:
  ISAJET 7.69 is now available, replacing version 7.64 and several intermediate
versions. This document contains the release notes and current manual.


title: Analytical approach to nonperturbative Yang-Mills thermodynamics

abstract:
  An analytical and inductive approach to hot SU(N) Yang-Mills dynamics is
developed. For N=2,3 pressure and energy density are pointwise compared with
lattice data.


title: Estimative of Inelasticity Coefficient from Emulsion Chamber Data

abstract:
  Atmospheric diffusion of high energy cosmic rays is studied analytically and
the obtained integral electromagnetic fluxes are compared with the data
measured by emulsion chamber detectors at mountain altitudes. We find a good
consistency between them when the average nucleon inelasticity coefficient is
varying between 0.50 and 0.65.


title: A thermal theory for charged leptons

abstract:
  We propose that charged leptons are the `baryons' of the gauge dynamics
subject to a SU(2)$_{e}$$\timesSU(2)_{\mu}\timesSU(2)_{\tau}$ symmetry. The
`mesons' of this theory are neutral and thus candidates for dark matter. There
is, in addition, a gauge group SU(2)$_{\tiny{CMB}}$ generating the CMB photon.
We {\sl compute} the value of $\alpha_{\tiny{em}}$ and the contribution to
$\La_{\tiny{cosmo}}$ coming from SU(2)$_{\tiny{CMB}}$. We qualitatively explain
the occurrence of dark matter, large intergalactic magnetic fields, a lepton
asymmtry, the stability of $T_{\tiny{CMB}}$, and the deviation from thermal QED
behavior of hot plasmas present in the interior of the sun and terrestial
nuclear fusion experiments.


title:
Direct instantons, topological charge screening and QCD glueball sum
  rules

abstract:
  Nonperturbative Wilson coefficients of the operator product expansion (OPE)
for the spin-0 glueball correlators are derived and analyzed. A systematic
treatment of the direct instanton contributions is given, based on realistic
instanton size distributions and renormalization at the operator scale. In the
pseudoscalar channel, topological charge screening is identified as an
additional source of (semi-) hard nonperturbative physics. The screening
contributions are shown to be vital for consistency with the anomalous axial
Ward identity, and previously encountered pathologies (positivity violations
and the disappearance of the 0^{-+} glueball signal) are traced to their
neglect. On the basis of the extended OPE, a comprehensive quantitative
analysis of eight Borel-moment sum rules in both spin-0 glueball channels is
then performed. The nonperturbative OPE coefficients turn out to be
indispensable for consistent sum rules and for their reconciliation with the
underlying low-energy theorems. The topological short-distance physics strongly
affects the sum rule results and reveals a rather diverse pattern of glueball
properties. New predictions for the spin-0 glueball masses and decay constants
and an estimate of the scalar glueball width are given, and several
implications for glueball structure and experimental glueball searches are
discussed.


title: Non-global jet evolution at finite N_c

abstract:
  Resummations of soft gluon emissions play an important role in many
applications of QCD, among them jet observables and small x saturation effects.
Banfi, Marchesini, and Smye have derived an evolution equation for non-global
jet observables that exhibits a remarkable analogy with the BK equation used in
the small x context. Here, this analogy is used to generalize the former beyond
the leading N_c approximation. The result shows striking analogy with the
JIMWLK equation describing the small x evolution of the color glass condensate.
A Langevin description allows numerical implementation and provides clues for
the formulation of closed forms for amplitudes at finite N_c. The proof of the
new equation is based on these amplitudes with ordered soft emission. It is
fully independent of the derivation of the JIMWLK equation and thus sheds new
light also on this topic.


title: Spontaneously broken, local Z$_2$ symmetry and the anatomy of a lepton

abstract:
  In the framework of the gauge symmetry ${SU(2)}_{\tiny{CMB}}\times
{SU(2)}_{\tiny{e}}\times {SU(2)}_{\tiny{\mu}}\times {SU(2)}_{\tiny{\tau}}$ we
provide a microscopic argument why a spontaneously broken, local Z$_2$ symmetry
surviving the 1$^{\tiny{st}}$ order phase transition to the confining phase of
one of the SU(2) factors generates two stable spin-1/2 excitations of vastly
different mass. A mixture of Fermi-Dirac and Bose-Einstein distributions with
the former favored by a factor two over the latter is obtained by applying
inequivalent, local-in-Euclidean-time Z$_2$ transformations to one and the same
field configuration contained in the description of the center-vortex
condensate.


title:
Information theory approach (extensive and nonextensive) to high energy
  multiple production processes

abstract:
  We present an overview of information theory approach (both in its extensive
and nonextensive versions) applied to high energy multiparticle production
processes. It will be illustrated by analysis of single particle distributions
measured in proton-proton, proton-antiproton and nuclear collisions. We shall
demonstrate the particular role played by the nonextensivity parameter q in
such analysis as summarizing our knowledge on the fluctuations existed in
hadronizing system.


title:
Precision Electroweak Observables in the Minimal Moose Little Higgs
  Model

abstract:
  Little Higgs theories, in which the Higgs particle is realized as the
pseudo-Goldstone boson of an approximate global chiral symmetry have generated
much interest as possible alternatives to weak scale supersymmetry. In this
paper we analyze precision electroweak observables in the Minimal Moose model
and find that in order to be consistent with current experimental bounds, the
gauge structure of this theory needs to be modified. We then look for viable
regions of parameter space in the modified theory by calculating the various
contributions to the S and T parameters.


title: Summary of the Heavy Flavour Session

abstract:
  The contributions to the parallel session on heavy-flavour production are
summarized. In more than 30 presentations, new theoretical developments and new
experimental results from the Tevatron, HERA, LEP, the B factories, and
neutrino-nucleon scattering were reported.


title: Universal Extra Dimensions and Kaluza Klein Bound States

abstract:
  We study the bound states of the Kaluza-Klein (KK) excitations of quarks in
certain models of Universal Extra Dimensions. Such bound states may be detected
at future lepton colliders in the cross section for the pair production of
KK-quarks near threshold. For typical values of model parameters, we find that
"KK-quarkonia" have widths in the 10 - 100 MeV range, and production cross
sections of order a few picobarns for the lightest resonances. Two body decays
of the constituent KK-quarks lead to distinctive experimental signatures. We
point out that such KK resonances may be discovered before any of the higher KK
modes.