title: Nonfactorizable corrections to B -> J/psi K

abstract:
  We apply the method of QCD light-cone sum rules to calculate nonfactorizable
contributions to the B -> J/psi K decay and estimate soft nonfactorizable
corrections to the a_2 parameter. The corrections appear to be positive,
favoring the positive sign of a_2, in agreement with recent theoretical
considerations and experimental data. Our result also confirms expectations
that in the color-suppressed decay nonfactorizable corrections are sizable.


title: The di-photon signature of Higgs bosons in GMSB models at the LHC

abstract:
  We show how the well studied $\gamma\gamma$ inclusive Higgs signal can be
used at the Large Hadron Collider to test Gauge Mediated Supersymmetry Breaking
scenarios in which a rather heavy Higgs boson decays into two light
neutralinos, the latter yielding two photons and missing (transverse) energy


title:
Escape from washing out of baryon number in a two-zero-texture general
  Zee model compatible with the large mixing angle MSW solution

abstract:
  We propose a two-zero-texture general Zee model, compatible with the large
mixing angle Mikheyev-Smirnov-Wolfenstein solution. The washing out of the
baryon number does not occur in this model for an adequate parameter range. We
check the consistency of a model with the constraints coming from flavor
changing neutral current processes, the recent cosmic microwave background
observation, and the Z-burst scenario.


title: Spin Studies of Nucleons in a Statistical Model

abstract:
  We decompose various quark-gluon Fock states of a nucleon in a set of states
in which each of the three-quark core and the rest of the stuff, termed as a
sea, appears with definite spin and color quantum number, their weight being
determined, statistically, from their multiplicities. The expansion
coefficients in the quark-gluon Fock states have been taken from a recently
proposed statistical model. We have also considered two modifications of this
model with a view to reduce the contributions of the sea components with higher
multiplicities. With certain approximations, we have calculated the quark
contributions to the spin of the nucleon,the ratio of the magnetic moments of
nucleons, their weak decay constant, and the ratio of SU(3) reduced matrix
elements for the axial current. A reasonably close agreement with the
corresponding experimental values have been obtained in all the three cases.


title:
A new implication for strong interactions if large, direct CP violation
  in Bbar^0(B^0) -> pi^+pi^- is confirmed

abstract:
  We show that the large, direct CP-violation parameter
$A_{\pi\pi}=-C_{\pi\pi}$, reported by the BELLE collaboration in the decays
Bbar^0(B^0) -> \pi^+\pi^-, implies an unusual situation in which the presence
of a very large difference between two strong-interaction phases ~ -110 deg.
plays an essential role. We make the demonstration within a model of strong,
two-body quasi-elastic interactions between physical hadrons. The model can
accommodate a large difference between two strong-interaction phases, for which
it provides a natural enhancement.


title:
The role of baryon and lepton numbers in the physics beyond the standard
  model

abstract:
  I review the role played by baryon and lepton numbers and their discrete
subgroups in determining the low energy effective theory relevant for TeV
physics.


title: Universal Texture of Quark and Lepton Mass Matrices

abstract:
  Against the conventional picture that the mass matrix forms in the quark
sectors will take somewhat different structures from those in the lepton
sectors, a possibility that all the mass matrices of quarks and leptons have
the same form as in the neutrinos is investigated. For the lepton sectors, the
model leads to a nearly bimaximal mixing with the prediction
|U_{e3}|^2=m_e/2m_\mu=0.0024 and \tan^2\theta_{sol} \simeq m_{\nu 1}/m_{\nu 2},
and so on. For the quark sectors, it can lead to reasonable values of the CKM
mixing matrix and masses: |V_{us}|\simeq \sqrt{m_d/m_s}, |V_{ub}| \simeq
|V_{cb}|\sqrt{m_u/m_c}, |V_{td}| \simeq |V_{cb}|\cdot |V_{us}|, and so on.


title:
New method for calculating helicity amplitudes of jet-like QED processes
  for high-energy colliders II. Processes with lepton pair production

abstract:
  As continuation of our previous paper we further develop our new method for
calculating helicity amplitudes of jet-like QED processes described by tree
diagrams, applying it to lepton pair production. This method consists in
replacing spinor structures for real and weakly virtual intermediate leptons by
simple transition vertices. New vertices are introduced for the pair production
case, and previous bremsstrahlung vertices are generalized to include virtual
photons inside the considered jet. We present a diagrammatic approach that
allows to write down in an efficient way the leading helicity amplitudes, at
tree level. The obtained compact amplitudes are particularly suitable for
numerical calculations in jet-like kinematics. Several examples with up to four
particles in a jet are discussed in detail.


title: Gauge Unification and Quark Masses in a Pati-Salam Model from Branes

abstract:
  We investigate the phase space of parameters in the Pati-Salam model derived
in the context of D-branes scenarios, requiring low energy string scale. We
find that a non-supersymmetric version complies with a string scale as low as
10 TeV, while in the supersymmetric version the string scale raises up to ~2 x
10^7 TeV. The limited energy region for RGE running demands a large tan(beta)
in order to have experimentally acceptable masses for the top and bottom
quarks.


title:
Large extra dimension effects in Higgs boson production at linear
  colliders and Higgs factories

abstract:
  In the framework of quantum gravity propagating in large extra dimensions,
the effects of virtual Kaluza-Klein graviton and graviscalar interference with
Higgs boson production amplitudes are computed at linear colliders and Higgs
factories. The interference of the almost-continuous spectrum of the KK
gravitons with the standard model resonant amplitude is finite and predictable
in terms of the fundamental D-dimensional Plank scale M_D and the number of
extra dimensions \delta. We find that, for M_D ~ 1 TeV and \delta=2, effects of
the order of a few percent could be detected for heavy Higgs bosons (m_H>500
GeV) in Higgs production both via WW fusion in e^+e^- colliders and at
\mu^+\mu^- Higgs-boson factories.


title:
How to use SANC to improve the PHOTOS Monte Carlo simulation of
  bremsstrahlung in leptonic W-Boson decays

abstract:
  Using the SANC system we study the one-loop electroweak standard model
predictions, including virtual and real photon emission, for the decays of the
on-shell vector boson, W --> L ANTI-NU (GAMMA). The complete one-loop
corrections and exact photon emission matrix element are taken into account.
For the phase-space integration, the Monte Carlo technique is used. This
provides a useful element, first for the evaluation of the theoretical
uncertainty of PHOTOS. Later we analyse the source of the differences between
SANC and PHOTOS and we calculate the additional weight, which once installed,
improves predictions of PHOTOS simulations. We can conclude that, after the
correction of the weight is implemented, the theoretical uncertainty of PHOTOS
simulations due to an incomplete first-order matrix element is reduced to below
alpha/pi, for observables not tagging the photon in a direct way, and to 10%
otherwise. This is interesting for applications in the phenomenology of the
ongoing LEP2 and future LC and LHC experimental studies.


title: Baryons in the Constituent-Quark Model

abstract:
  An elementary constituent-quark (CQ) model of mesons was previously
presented. In this paper, we continue research into a study of the baryons in
the constituent-quark model. Mac Gregor proposed a comprehensive model of
elementary particles for which both mesons and baryons shared common mass-band
structure in quantized units of m = 70 MeV, B= 140 MeV and X = 420 MeV. A
review of the baryon data is under taken for comparison with the CQ model. It
is shown in this paper that baryons possess an isospin I related to the mass
quantum m = 70 MeV and to the B = 140 MeV quantum (or the mass of the pion). In
order to establish a consistency with the quark model of Gell-Mann, we identify
the SU(3) baryon decuplet as a standard feature to be maintained with only
slight changes to the constituent-quark masses. By insisting on the J = 3/2,
P-states of the SU(3) baryon decuplet to be in the same CQ excitation states,
we are lead to establish baryon cores in the P-states with J = 1/2. Core
corrections to Mac Gregor's CQ model of baryons are presented. Exact shell
structure is found among all the baryons regardless of isospin as evidenced in
the data from the Particle Data Group listing. New baryons are predicted to
exist.


title: Upper bounds on the mass of the lightest neutralino

abstract:
  We derive the general upper bounds on the mass of the lightest neutralino, as
a function of the gluino mass, in different supersymmetry breaking models with
minimal particle content and the standard model gauge group. This includes
models with gravity mediated supersymmetry breaking (SUGRA), as well as models
with anomaly mediated supersymmetry breaking (AMSB). We include the
next-to-leading order corrections in our evaluation of these bounds. We then
expand the mass matrix in powers of M_Z/mu, and find the upper bound on the
mass of the lightest neutralino from this expansion. By scanning over all of
the parameter space, we find that the bound we have obtained can be saturated.
We compare the general upper bound on the lightest neutralino mass to the upper
bound that is obtained when the radiative electroweak symmetry breaking
scenario is assumed.


title:
Soft parton radiation in polarized vector boson production: theoretical
  issues

abstract:
  Accurate measurement of spin-dependent parton distributions in production of
electroweak bosons with polarized proton beams at the Relativistic Heavy Ion
Collider depends on good understanding of QCD radiation at small transverse
momenta $q_T$ of vector bosons. We present a theoretical formalism for
small-$q_T$ resummation of the cross sections for production of virtual
photons, W, and Z bosons, with the subsequent decay of these bosons into lepton
pairs, for arbitrary longitudinal polarizations of the proton beams.


title: Single-spin asymmetries with weak bosons at RHIC

abstract:
  In order to measure spin-dependent parton distributions in production of weak
bosons using the non-hermetic detectors of the Relativistic Heavy Ion Collider,
an accurate model for distributions of charged leptons from the W boson decay
is needed. We discuss the predictions for production and decay of the W bosons
based on a calculation for resummation of large logarithmic contributions
originating from multiple soft gluon radiation. We compare the predictions for
the spin-dependent resummed cross sections with the corresponding
next-to-leading order results. We show that the lepton-level asymmetries can be
reliably predicted by the resummation calculation and directly compared to the
experimental data. A program for the numerical analysis of such cross sections
in $\gamma ^{*}, W^{\pm},$ and $Z^{0}$ boson production is also presented.


title:
Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix in Standard
  Model

abstract:
  We have investigated the present renormalization prescriptions of
Cabibbo-Kobayashi-Maskawa (CKM) matrix, and found there is still not an
integrated prescription to all loop levels. In this paper We propose a new
prescription which is designed for all loop levels in the present perturbative
theory. This new prescription will keep the unitarity of the bare CKM matrix
and make the amplitude of an arbitrary physical process involving quark mixing
convergent and gauge independent.


title:
Quark-Lepton Unification and Lepton Flavor Non-Conservation from a
  TeV-scale Seesaw Neutrino Mass Texture

abstract:
  In a recent paper, we pointed out that mixing of the light neutrinos with
heavy gauge singlet states could reconcile the Z-pole data from e+e- colliders
and the nu_mu (anti-nu_mu) scattering data from the NuTeV experiment at
Fermilab. We further noted that the mixing angle required to fit the data is
much larger than what would be expected from the conventional seesaw mechanism.
In this paper, we show how such mixings can be arranged by a judicious choice
of the neutrino mass texture. We also argue that by invoking the unification of
the Dirac mass matrix for the up-type quarks and the neutrinos, the mass of the
heavy states can naturally be expected to be in the few TeV range. The model is
strongly constrained by the lepton flavor changing process mu -> e gamma which
requires lepton universality to be violated in the charged channel.


title: Higgs Production at NNLO

abstract:
  We describe the calculation of inclusive Higgs boson production at hadronic
colliders at next-to-next-to-leading order (NNLO) in perturbative quantum
chromodynamics. We have used the technique developed in reference [4]. Our
results agree with those published earlier in the literature.


title:
Analysis of the chargino and neutralino mass parameters at one-loop
  level

abstract:
  In the Minimal Supersymmetric Standard Model (MSSM) the masses of the
neutralinos and charginos depend on the gaugino and higgsino mass parameters M,
M' and $\mu$. If supersymmetry is realized, the extraction of these parameters
from future high energy experiments will be crucial to test the underlying
theory. We present a consistent method how on-shell parameters can be properly
defined at one-loop level and how they can be determined from precision
measurements. In addition, we show how a GUT relation for the parameters M and
M' can be tested at one-loop level. The numerical analysis is based on a
complete one-loop calculation. The derived analytic formulae are given in the
appendix.


title: Theoretical model of the phi meson photoproduction amplitudes

abstract:
  P-wave amplitudes for elastic K+ K- photoproduction on hydrogen near the
phi(1020) resonance have been derived in an analytical form and a partial wave
decomposition of the amplitudes has been performed. We discuss the high energy
limit of the resulting amplitudes and compare two types of pomeron coupling to
nucleons.


title: Possible test for CPT invariance with correlated neutral B decays

abstract:
  We study breakdown of $CPT$ symmetry which can occur in the decay process $B
\bar B \to l^\pm X^\mp f$ with $f$ being a CP eigenstate. In this process, the
standard model expectations for time ordered semi-leptonic and hadronic events,
i.e. which of the two decays takes place first, can be altered in the case that
there is a violation of the $CPT$ symmetry. To illustrate this possibility, we
identify and study several time integrated observables. We find that an
experiment with $10^{9}$ $B\bar B$ pairs, has the capability for improving the
bound on $CPT$ violating parameter or perhaps observe $CPT$ violation.


title: Extracting the jet azimuthal anisotropy from higher order cumulants

abstract:
  We analyze the method for calculation of a coefficient of jet azimuthal
anisotropy without reconstruction of the nuclear reaction plane considering the
higher order correlators between the azimuthal position of jet axis and the
angles of particles not incorporated in the jet. The reliability of this
technique in the real physical situation under LHC conditions is illustrated.


title: Dressing the Quark with QCD Condensates

abstract:
  A condensate of $\pvec = 0$ partons in the perturbative vacuum gives rise to
a term $\propto\delta^4(p)$ in the free PQCD propagators. The leading
condensate contribution to the quark propagator can be exactly summed since
there is a factor $\delta^4(p)$ associated to each loop. We calculate the
dressed quark propagator in the presence of either a gluon or a quark
condensate, for a number of colors $N \to \infty$. The dressed quark propagator
satisfies a Dyson-Schwinger type equation which can be exactly solved within
our framework. In the case of a gluon condensate the dressed quark propagator
has no pole, hence quarks cannot appear in asymptotic states, and moreover the
DS equation has a solution which spontaneously breaks chiral symmetry. We also
calculate the dressed quark-photon vertex and verify that the corresponding
Ward-Takahashi identity is satisfied, and that the dressed self-energy
correction to the photon propagator does not shift the physical photon pole.


title: Disoriented Chiral Condensate Formation in Heavy Ion Collisions?

abstract:
  One of the main aims of present and upcoming high energy heavy ion collision
experiments is to study new phases of matter at extreme temperature and
density. It is expected that a nontrivial classical pion field configuration
can occasionally form during the out-of-equilibrium chiral phase transition. We
have recently shown that, contrarily to what has been assumed so far, this
configuration is not identical to the so-called disoriented chiral condensate
(DCC), proposed in the early 1990's. A detailed analysis reveals that a more
realistic picture is that of an ``unpolarized'' DCC, where the Fourier modes of
the field have completely independent orientations in isospin space instead of
being aligned with each other as in the original DCC. This has important
implications concerning the possible detection of the phenomenon. In
particular, the main expected signature of the original DCC, which is used in
most experimental searches, is absent in the unpolarized case. We point out
that the fact that no evidence of DCC formation has been reported so far in
nuclear collisions actually agrees with our present theoretical understanding.
New experimental strategies should be designed to look for the unpolarized DCC
in existing data from SPS as well as in future searches at RHIC and LHC.


title: Event-by-Event Fluctuations

abstract:
  In this review, we systematically examine the principles and the practices of
fluctuations such as the momentum and the charge fluctuations as applied to the
heavy ion collisions. Main emphases are: (i) Fluctuations as signals of phase
transition (ii) Relationship between correlation functions and fluctuations
(iii) Qualitative difference between fluctuations in small systems and large
systems. Whenever available, theoretical results are compared with data from
RHIC and SPS.


title: Mass and mixing of fermions from a rotating mass matrix

abstract:
  We summarize the results showing that all existing data on mixing between up
and down fermion states (i.e. CKM matrix and neutrino oscillations) and on the
hierarchical quark and lepton mass ratios between generations are consistent
with the two phenomena being both consequences of a mass matrix rotating in
generation space with changing energy scale. Thus the rotation of the mass
matrix can be traced over some 14 orders of magnitude in energy from the mass
scale of the $t$-quark at 175 GeV to below that of the atmospheric neutrino at
0.05 eV.


title: Mass Spectrum of Three-Pion System in Kaluza-Klein Picture

abstract:
  In this note we present additional arguments in favour of Kaluza and Klein
picture of the world. In fact, we show that formula (\ref{KK3pi}) provided by
Kaluza-Klein approach with the fundamental scale early calculated \cite{1}
gives an excellent description for the mass spectrum of three-pion system.


title:
Examining the Higgs boson potential at lepton and hadron colliders: a
  comparative analysis

abstract:
  We investigate inclusive Standard Model Higgs boson pair production at lepton
and hadron colliders for Higgs boson masses in the range 120 GeV < m_H < 200
GeV. For m_H < 140 GeV we find that hadron colliders have a very limited
capability to determine the Higgs boson self-coupling, \lambda, due to an
overwhelming background. We also find that, in this mass range, supersymmetric
Higgs boson pairs may be observable at the LHC, but a measurement of the self
coupling will not be possible. For m_H > 140 GeV we examine ZHH and HH nu
bar-nu production at a future e+e- linear collider with center of mass energy
in the range of sqrt{s}=0.5 - 1 TeV, and find that this is likely to be equally
difficult. Combining our results with those of previous literature, which has
demonstrated the capability of hadron and lepton machines to determine \lambda
in either the high or the low mass regions, we establish a very strong
complementarity of these machines.


title: Breached pairing superfluidity: Possible realization in QCD

abstract:
  We propose a wide universality class of gapless superfluids, and analyze a
limit that might be realized in quark matter at intermediate densities. In the
breached pairing color superconducting phase heavy $s$-quarks, with a small
Fermi surface, pair with light $u$ or $d$ quarks. The groundstate has a
superfluid and a normal Fermi component simultaneously. We expect a second
order phase transition, as a function of increasing density, from the breached
pairing phase to the conventional color-flavor locked (CFL) phase.


title: Leptonic constant of pseudoscalar B_c meson

abstract:
  We calculate the leptonic constant for the ground pseudoscalar state of B_c
meson in the framework of QCD-motivated potential model taking into account the
two-loop anomalous dimension for the heavy quark current in the nonrelativistic
QCD as matched with the full QCD.


title: Jet physics at LEP and QCD

abstract:
  With the advent of LEP we discovered jets and at its last years we learned a
lot about intermediate vector bosons. All that strongly supports our belief in
QCD. Jet physics is briefly described in this talk. Experimental results are
compared with QCD predictions. It is shown that the perturbative QCD has been
able not only to describe the existing data but also to predict many bright
phenomena.


title: Ladder-QCD at finite isospin chemical potential

abstract:
  We use an effective QCD model (ladder-QCD) to explore the phase diagram for
chiral symmetry breaking and restoration at finite temperature with different
$u,d$ quark chemical potentials. In agreement with a recent investigation based
on the Nambu-Jona-Lasinio model, we find that a finite pion condensate shows up
for high enough isospin chemical potential $\mu_{I}=(\mu_{u}-\mu_{d})/2$. For
small $\mu_{I}$ the phase diagram in the $(\mu_B,T)$ plane shows two first
order transition lines and two critical ending points.


title: Leptogenesis with Left-Right domain walls

abstract:
  The presence of domain walls separating regions of unbroken $SU(2)_L$ and
$SU(2)_R$ is shown to provide necessary conditions for leptogenesis which
converts later to the observed Baryon aymmetry. The strength of lepton number
violation is related to the majorana neutrino mass and hence related to current
bounds on light neutrino masses. Thus the observed neutrino masses and the
Baryon asymmetry can be used to constrain the scale of Left-Right symmetry
breaking.


title: Flavor Constraints on Theory Space

abstract:
  Composite Higgs models based on the chiral symmetries of ``theory space'' can
produce Higgs bosons with masses of order 100 GeV from underlying strong
dynamics at scales up to 10 TeV without fine tuning. This talk argues that
flavor-violating interactions generically arising from underlying flavor
dynamics constrain the Higgs compositeness scale to be at least 75 GeV,
implying that significant fine-tuning is required. Bounds from CP violation and
weak isospin violation are also discussed.


title: Filling Perturbative Ground States

abstract:
  I discuss a degree of freedom in formulating perturbation theory that is
often neglected: the in- and out-states need not be empty. The inclusion of
(free) particles in the asymptotic states modifies the on-shell prescription of
the free propagator. This affects loop contributions -- but the modified
expansion is {\it a priori} as justified as the standard one with Feynman
prescription.
  It is possible to dress the quark propagator to all orders with zero-momentum
gluons from the perturbative ground state. The dressed quark has no pole and
thus cannot appear as an external particle in the S-matrix. Chiral symmetry may
be spontaneously broken, but Lorentz and gauge symmetry is exact. Adding loop
corrections to this ``dressed tree approximation'' gives a formally exact PQCD
expansion.


title: Angular intricacies in hot gauge field theories

abstract:
  It is argued that in hot gauge field theories, "Hard Thermal Loops" leading
order calculations call for a definite sequence of angular averages and
discontinuity (or Imaginary part prescription) operations, and run otherwise
into incorrect results. The ten years old collinear singularity problem of hot
$QCD$, provides a striking illustration of that fate.


title:
QCD inequalities for the nucleon mass and the free energy of baryonic
  matter

abstract:
  The positivity of the integrand of certain Euclidean space functional
integrals implies that the free energy per unit volume for QCD with a baryon
chemical potential $\mu_B$ (and zero isospin chemical potential) is greater
than the free energy with isospin chemical potential $\mu_I = (2 \mu_B)/N_c$
(and zero baryon chemical potential). This relation implies a bound on the
nucleon mass: there exists a particle X in QCD such that $M_N \ge (N_c m_X)/(2
I_X)$ where $m_X$ is the mass and of the particle and $I_X$ is its isospin.


title: Pseudoscalars Mesons in Hot, Dense Matter

abstract:
  Phase transitions in hot and dense matter and the in--medium behavior of
pseudoscalar mesons ($\pi^{\pm}, \pi^0, K^{\pm}, K^0 ,\bar K^0,\eta {and} \eta'
$) are investigated, in the framework of the three flavor Nambu--Jona-Lasinio
model, including the 't Hooft interaction, which breaks the $U_A(1)$ symmetry.
Three different scenarios are considered: zero density and finite temperature,
zero temperature and finite density in quark matter with different degrees of
strangeness, and finite temperature and density. At T=0, the role of strange
valence quarks in the medium is discussed, in connection with the phase
transition and the mesonic behavior. It is found that the appearance of strange
quarks, above certain densities, leads to meaningful changes in different
observables, especially in matter with \beta$ --equilibrium. The behavior of
mesons in the $T-\rho$ plane is analyzed in connection with possible signatures
of restoration of symmetries.


title: Allowed and observable phases in two-Higgs-doublet Standard Models

abstract:
  In Quantum Field Theory models of electro-weak interactions with
spontaneously broken gauge invariance, renormalizability limits to four the
degree of the Higgs potential, whose minima determine the possible vacuum
states in tree approximation. Through the discussion of some simple variants of
the Standard Model with two Higgs doublets, we show that, in some cases, the
technical limit imposed by renormalizability can prevent the observability of
some phases of the system, that would be otherwise allowed by the symmetry of
the Higgs potential. An extension of the scalar sector through suitable SU$_2$
singlet particle fields can resolve this {\em unnatural} limitation.


title:
New Strategies to Obtain Insights into CP Violation Through $B_s\to
  D_s^{\pm}K^\mp, D_s^{\ast\pm}K^\mp, ...$ and $B_d\to D^{\pm}\pi^\mp,
  D^{\ast\pm}\pi^\mp, ...$ Decays

abstract:
  Decays of the kind $B_s\to D_s^{\pm}K^\mp, D_s^{\ast\pm}K^\mp, ...$ and
$B_d\to D^{\pm}\pi^\mp, D^{\ast\pm}\pi^\mp, ...$ allow us to probe
$\phi_s+\gamma$ and $\phi_d+\gamma$, respectively, involving the angle $\gamma$
of the unitarity triangle and the $B^0_q$--$\bar B^0_q$ mixing phases $\phi_q$
($q\in\{d,s\}$). Analysing these modes in a phase-convention-independent way,
we find that their mixing-induced observables are affected by a subtle $(-1)^L$
factor, where $L$ denotes the angular momentum of the $B_q$ decay products, and
derive bounds on $\phi_q+\gamma$. Moreover, we emphasize that ``untagged''
rates are an important ingredient for efficient determinations of weak phases,
not only in the presence of a sizeable width difference $\Delta\Gamma_q$;
should $\Delta\Gamma_s$ be sizeable, the combination of untagged with tagged
$B_s\to D_s^{\pm}K^\mp,D_s^{\ast\pm}K^\mp, ...$ observables provides an elegant
and unambiguous extraction of $\tan(\phi_s+\gamma)$, whereas the conventional
determination of $\phi_s+\gamma$ is affected by an eightfold discrete
ambiguity. Finally, we propose a combined analysis of $B_s\to D_s^{\pm}K^\mp,
D_s^{\ast\pm}K^\mp, ...$ and $B_d\to D^{\pm}\pi^\mp, D^{\ast\pm}\pi^\mp, ...$
modes, which has important advantages, offering various interesting new
strategies to extract $\gamma$ in an essentially unambiguous manner.


title:
Master integrals with one massive propagator for the two-loop
  electroweak form factor

abstract:
  We compute the master integrals containing one massive propagator entering
the two-loop electroweak form factor, i.e. the process f fbar --> X, where f
fbar is an on-shell massless fermion pair and X is a singlet particle under
SU(2)L x U(1)Y, such as a virtual gluon or an hypothetical Z'. The method used
is that of the differential equation in the evolution variable x = -s/m^2,
where s is the c.m. energy squared and m is the mass of the W or Z bosons
(assumed to be degenerate). The 1/\epsilon poles and the finite parts are
computed exactly in terms of one-dimensional harmonic polylogarithms of the
variable x, H(w;x), with \epsilon=2-D/2 and D the space-time dimension. We
present large-momentum expansions of the master integrals, i.e. expansions for
|s| >> m^2, which are relevant for the study of infrared properties of the
Standard Model. We also derive small-momentum expansions of the master
integrals, i.e. expansions in the region |s| << m^2, related to the threshold
behaviour of the form factor (soft probe). Comparison with previous results in
the literature is performed finding complete agreement.


title: Supernova and neutron-star limits on large extra dimensions reexamined

abstract:
  In theories with large extra dimensions, supernova (SN) cores are powerful
sources of Kaluza-Klein (KK) gravitons. A large fraction of these massive
particles are gravitationally retained by the newly born neutron star (NS). The
subsequent slow KK decays produce potentially observable gamma rays and heat
the NS. We here show that the back-absorption of the gravitationally trapped KK
gravitons does not significantly change our previous limits. We calculate the
graviton emission rate in a nuclear medium by combining the low-energy
classical bremsstrahlung rate with detailed-balancing arguments. This approach
reproduces the previous thermal emission rate, but it is much simpler and
allows for a calculation of the absorption rate by a trivial phase-space
transformation. We derive systematically the dependence of the SN and NS limits
on the number of extra dimensions.


title: Particle Physics Explanations for Ultra High Energy Cosmic Ray Events

abstract:
  The origin of cosmic ray events with $E \gsim 10^{11}$ GeV remains
mysterious. In this talk I briefly summarize several proposed particle physics
explanations: a breakdown of Lorentz invariance, the ``$Z-$burst'' scenario,
new hadrons with masses of several GeV as primaries, and magnetic monopoles
with mass below $10^{10}$ GeV as primaries. I then describe in a little more
detail the idea that these events are due to the decays of very massive,
long--lived exotic particles.


title: Pion and sigma meson properties in a relativistic quark model

abstract:
  A variety of strong and electroweak interaction properties of the pion and
the light scalar sigma meson are computed in a relativistic quark model. Under
the assumption that the resulting coupling of these mesons to the constituent
quarks is identical, the sigma meson mass is determined as M_sigma=385.4 MeV.
We discuss in detail the gauging of the non-local meson-quark interaction and
calculate the electromagnetic form factor of the pion and the form factors of
the pi(0) -> gamma gamma and sigma -> gamma gamma processes. We obtain explicit
expressions for the relevant form factors and evaluate the leading and
next-to-leading orders for large Euclidean photon virtualities. Turning to the
decay properties of the sigma we determine the width of the electromagnetic
sigma -> gamma gamma transition and discuss the strong decay sigma -> pi pi. In
a final step we compute the nonleptonic decays D -> sigma pi and B -> sigma pi
relevant for the possible observation of the sigma meson. All our results are
compared to available experimental data and to results of other theoretical
studies.


title: Consequences of neutrinoless double beta decay and WMAP

abstract:
  Observation of the neutrinoless double beta decay ($\0n$) has established
that there is lepton number violation in nature and the neutrino masses are
Majorana in nature. It also gives the absolute mass of the neutrinos and
discriminates between different models of neutrino masses. The allowed amount
of lepton number violation puts severe constraints on some possible new physics
beyond the standard model. The recent results from WMAP are consistent with the
consequences of the neutrinoless double beta decay. They improve some of these
constraints very marginally, which we shall summarise here. We mention the new
physics which are not affected by WMAP and could make both these limits from
the neutrinoless double beta decay and WMAP consistent.


title:
Electromagnetic nucleon-delta transition in the perturbative chiral
  quark model

abstract:
  We apply the perturbative chiral quark model to the gamma N -> Delta
transition. The four momentum dependence of the respective transverse helicity
amplitudes A(1/2) and A(3/2) is determined at one loop in the pseudoscalar
Goldstone boson fluctuations. Inclusion of excited states in the quark
propagator is shown to result in a reasonable description of the experimental
values for the helicity amplitudes at the real photon point.


title: Higgs-Boson Production Induced by Bottom Quarks

abstract:
  Bottom quark-induced processes are responsible for a large fraction of the
LHC discovery potential, in particular for supersymmetric Higgs bosons.
Recently, the discrepancy between exclusive and inclusive Higgs boson
production rates has been linked to the choice of an appropriate bottom
factorization scale. We investigate the process kinematics at hadron colliders
and show that it leads to a considerable decrease in the bottom factorization
scale. This effect is the missing piece needed to understand the corresponding
higher order results. Our results hold generally for charged and for neutral
Higgs boson production at the LHC as well as at the Tevatron. The situation is
different for single top quark production, where we find no sizeable
suppression of the factorization scale. Turning the argument around, we can
specify how large the collinear logarithms are, which can be resummed using the
bottom parton picture.


title:
Higgs boson production in bottom quark fusion at next-to-next-to-leading
  order

abstract:
  The total cross section for Higgs production in bottom-quark annihilation is
evaluated at next-to-next-to-leading order (NNLO) in QCD. This is the first
time that all terms at order alpha_s^2 are taken into account. We find a
greatly reduced scale dependence with respect to lower order results, for both
the factorization and the renormalization scales. The behavior of the result is
consistent with earlier determinations of the appropriate factorization scale
for this process of mu_F ~ M_H/4, and supports the validity of the bottom
parton density approach for computing the total inclusive rate. We present
precise predictions for the cross section at the Tevatron and the LHC.


title: Dynamical Electroweak Superconductivity from a Composite Little Higgs

abstract:
  I describe, from the bottom up, a sequence of natural effective field
theories. Below a TeV we have the minimal standard model with a light Higgs,
and an extra neutral scalar. In the 1-10 TeV region these scalars are part of a
multiplet of pseudo Nambu-Goldstone Bosons. Interactions with additional TeV
mass scalars, gauge bosons, and vector-like charge 2/3 quarks stabilize the
Higgs mass squared parameter without finetuning. Electroweak superconductivity
may be determined in this effective theory as a UV insensitive vacuum alignment
problem. Above the 10 TeV scale we have strongly coupled new gauge
interactions.


title: Viewing the Proton Through "Color"-Filters

abstract:
  While the form factors and parton distributions provide separately the shape
of the proton in coordinate and momentum spaces, a more powerful imaging of the
proton structure can be obtained through phase-space distributions. Here we
introduce the Wigner-type quark and gluon distributions which depict a full-3D
proton at every fixed light-cone momentum, like what seen through
momentum("color")-filters. After appropriate phase-space reductions, the Wigner
distributions are related to the generalized parton distributions (GPD's) and
transverse-momentum dependent parton distributions which are measurable in
high-energy experiments. The new interpretation of GPD's provides a classical
way to visualize the orbital motion of the quarks which is known to be the key
to the spin and magnetic moment of the proton.


title: What can we learn from phi_1 and B_d^0 -> pi^+ pi^- ?

abstract:
  We discuss what we can understand from $\phi_1$ and $B^0_d\to \pi^+ \pi^- $
decay mode. Using a convention without weak phases $\phi_2$ and $\phi_3$, we
can solve the parameters from the time-depended CP asymmetry. If we can put a
condition the contribution from penguin except for the CKM factor including in
the diagram is small, then we can lead the allowed region of $R_t$ or $\phi_2$
by using the convention.


title: Theory of Hadronic Decays in B Meson System in the SM

abstract:
  Withdrawn by arXiv administration because the text and equations were
plagiarized from chapter 10 of the BaBar Physics Book
http://www.slac.stanford.edu/pubs/slacreports/slac-r-504.html
  See also hep-ph/0304045


title: A Review of Heavy-Quark and Chiral Perturbation Theory


title: B^0bar{B}^0 Mixing in the SM

abstract:
  Withdrawn by arXiv administration because the text and equations were
plagiarized from chapter 11 of the BaBar Physics Book
http://www.slac.stanford.edu/pubs/slacreports/slac-r-504.html
  See also hep-ph/0304045


title: CP Violation and the Problem Measuring phi_1

abstract:
  Withdrawn by arXiv administration because the text and equations were
plagiarized from chapter 7 of the BaBar Physics Book
http://www.slac.stanford.edu/pubs/slacreports/slac-r-504.html
  See also hep-ph/0304045


title: CP-Violation in B Mesons and Physics Beyond the SM

abstract:
  Withdrawn by arXiv administration because the text and equations were
plagiarized from chapter 13 of the BaBar Physics Book
http://www.slac.stanford.edu/pubs/slacreports/slac-r-504.html
  See also hep-ph/0304045


title: Theory of Inclusive Decays of Heavy Hadron


title: The (Super)String Theories' Problems

abstract:
  From: Yasushi Watanabe <watanabe@tithp1.hp.phys.titech.ac.jp>
  Date: Thu, 10 Apr 2003 08:34:09 EDT
  Subject: withdrawal of R.Naboulsi's papers
  ------------
  Dear sirs:
  I am a professor at Tokyo Institute of Technology. I wished to help a person
like R.Naboulsi who was trying very hard to get a fellowship to come to Japan.
I thought he was a really genius person to produce so many papers. He says most
of them are his original, but apparently not. Very regretful! I should have
noticed it much earlier.
  He has not come to Japan yet. I am the one who let him use the affiliation of
Tokyo Institute of Technology, as he asked me saying that it is the only way to
get the fellowship. I also asked my associate to upload because he says he
cannot from his computer.
  I sincerely apologize you for this unfortunate happening. I have asked my
associate to cancel all his papers uploaded already. Please understand that
this is done under a good will. He did not understand the basis of scientific
world. I just believed him too much.
  I hope you understand the situation.
  Sincerely Yours,
  Y.Watanabe,
  Prof. of Physics


title:
Single decay-lepton angular distributions in polarized e+e- --> t tbar
  and simple angular asymmetries as a measure of CP-violating top dipole
  couplings

abstract:
  In the presence of an electric dipole coupling of t-tbar to a photon, and an
analogous "weak" dipole coupling to the Z, CP violation in the process e+e- -->
t tbar results in modified polarization of the top and anti-top. This
polarization can be analyzed by studying the angular distributions of decay
charged leptons when the top or anti-top decays leptonically. Analytic
expressions are presented for these distributions when either t or tbar decays
leptonically, including O(alpha_s) QCD corrections in the soft-gluon
approximation. The angular distributions are insensitive to anomalous
interactions in top decay. Two types of simple CP-violating polar-angle
asymmetries and two azimuthal asymmetries, which do not need the full
reconstruction of the t or tbar, are studied. Independent 90% CL limits that
may be obtained on the real and imaginary parts of the electric and weak dipole
couplings at a linear collider operating at sqrt{s}=500 GeV with integrated
luminosity 500 fb^{-1} and also at sqrt{s}=1000 GeV with integrated luminosity
1000 fb^{-1} have been evaluated. The effect of longitudinal electron and/or
positron beam polarizations has been included.


title: b-tau Unification with Gaugino and Sfermion Mass non Universality

abstract:
  In the context of a SUSY GUT inspired MSSM version, the low energy
consequences of the asymptotic $b-\tau$ Yukawa coupling Unification are
examined, under the assumption of universal or non-universal boundary
conditions for the gaugino and sfermion masses. Gaugino non-universality is
applied, so that the SUSY corrections to $b$-quark mass can be reconciled with
the present experimental data on muon anomalous magnetic moment. Restrictions
on the parameter space, originating from the Cold Dark Matter abundance in the
universe, the inclusive branching ratio of $b\to s\gamma$ and the accelerator
data are, also, investigated and the scalar neutralino-proton cross section is
calculated. In the case of a bino-like LSP and universal boundary conditions
for the sfermion masses, the constraints, arising from the Cold Dark Matter and
${\rm BR}(b \to s\gamma)$ can be simultaneously satisfied, mainly thanks to the
$A$-pole effect or the neutralino-stau coannihilations. In addition, sfermion
mass non-universality provides the possibility of new coannihilation phenomena
(neutralino-sbottom or neutralino-tau sneutrino-stau), which facilitate the
simultaneous satisfaction of all the above requirements. In both cases above,
the neutralino abundance can essentially decrease for a W-ino or higgsino like
LSP creating regions of parameter space with additional neutralino-chargino
and/or heavier neutralino coannihilations. The neutralino-sbottom mass
proximity significantly ameliorates the detectability of LSP.


title: Four-loop vacuum energy density of the SU(N_c) + adjoint Higgs theory

abstract:
  We compute the dimensionally regularised four-loop vacuum energy density of
the SU(N_c) gauge + adjoint Higgs theory, in the disordered phase.
``Scalarisation'', or reduction to a small set of master integrals of the type
appearing in scalar field theories, is carried out in d dimensions, employing
general partial integration identities through an algorithm developed by
Laporta, while the remaining scalar integrals are evaluated in d = 3 -
2\epsilon dimensions, by expanding in \epsilon << 1 and evaluating a number of
coefficients. The results have implications for the thermodynamics of finite
temperature QCD, allowing to determine perturbative contributions of orders
O(g^6 ln(1/g)), O(g^6) to the pressure, while the general methods are
applicable also to studies of critical phenomena in QED-like statistical
physics systems.


title: The Higgs Sector of the Next-to-Minimal Supersymmetric Standard Model

abstract:
  The Higgs boson spectrum of the Next-to-Minimal Supersymmetric Standard Model
is examined. The model includes a singlet Higgs field S in addition to the two
Higgs doublets of the minimal extension. `Natural' values of the parameters of
the model are motivated by their renormalization group running and the vacuum
stability. The qualitative features of the Higgs boson masses are dependent on
how strongly the Peccei-Quinn U(1) symmetry of the model is broken, measured by
the self-coupling of the singlet field in the superpotential. We explore the
Higgs boson masses and their couplings to gauge bosons for various
representative scenarios.


title: The Curvaton as a Pseudo-Nambu-Goldstone Boson

abstract:
  The field responsible for the cosmological curvature perturbations generated
during a stage of primordial inflation might be the
  ``curvaton'', a field different from the inflaton field. To keep the
effective mass of the curvaton small enough compared to the Hubble rate during
inflation one may not invoke supersymmetry since the latter is broken by the
vacuum energy density. In this paper we propose the idea that the curvaton is a
pseudo Nambu-Goldstone boson (PNGB) so that its potential and mass vanish in
the limit of unbroken symmetry. We give a general framework within which PNGB
curvaton candidates should be explored. Then we explore various possibilities,
including the case where the curvaton can be identified with the
extra-component of a gauge field in a compactified five-dimensional theory (a
Wilson line), where it comes from a Little-Higgs mechanism, and where it is a
string axion so that supersymmetry is essential.


title: Proton decay and fermion masses in supersymmetric grand unified theories

abstract:
  We briefly review the issues of proton decay and fermion masses and mixings
in minimal supersymmetric grand unified theories. We argue that minimal SU(5),
although tightly constrained by proton decay data, is still not ruled out.
However, we outline the advantages of SO(10) unification, in particular in the
model with renormalizable see-saw mechanism and its remarkable predictions of
(a) exact R-parity at low energies, (b) large atmospheric neutrino angle as a
consequence of b-tau unification and (c) 1-3 leptonic mixing angle close to its
upper limit.


title:
Fluctuations and Deconfinement Phase Transition in Nucleus-Nucleus
  Collisions

abstract:
  We propose a method to experimentally study the equation of state of strongly
interacting matter created at the early stage of nucleus--nucleus collisions.
The method exploits the relation between relative entropy and energy
fluctuations and equation of state. As a measurable quantity, the ratio of
properly filtered multiplicity to energy fluctuations is proposed. Within a
statistical approach to the early stage of nucleus-nucleus collisions, the
fluctuation ratio manifests a non--monotonic collision energy dependence with a
maximum in the domain where the onset of deconfinement occurs.


title:
Alternatives to the Seesaw: Extra Z's and Constraints on Large Extra
  Dimensions

abstract:
  Alternatives to the traditional grand unified theory seesaw for neutrino
masses are briefly described. These include the possibility of large extra
dimensions and various possibilities for models involving an extra U(1)' gauge
symmetry. The difficulty of observing Majorana phases in neutrinoless double
beta decay is also briefly commented on.


title: The Skyrmion Model and the Dynamical Breakdown of Chiral Symmetry

abstract:
  A scalar field, $\eta({\bf r})$, is coupled to the skyrmion. Its classical
value in the vacuum ("condensate") reduces to the pion decay constant,
$f_{\pi}$, being thus proportional to the chiral condensate $<\bar{q} q>$. A
quadratic coupling of the scalar field to the pion kinetic Lagrangian term,
reminiscent from the linear sigma model, is considered. Its mass is an
additional free parameter in the model associated to the lightest scalar
isoscalar meson. Solutions for the two resulting coupled differential equations
are found in several cases. The nucleon, as a topological soliton, ``digs a
hole'' in the vacuum making the value of the scalar condensate to be close to
zero inside the skyrmion. Some of the observables, as for example the baryon
masses, may have their values closer to the experimental ones. Derrick's
stability analysis is applied to the model.


title:
Neutrino flavor conversion in a neutrino background: single- versus
  multi-particle description

abstract:
  In the early Universe, or near a supernova core, neutrino flavor evolution
may be affected by coherent neutrino-neutrino scattering. We develop a
microscopic picture of this phenomenon. We show that coherent scattering does
not lead to the formation of entangled states in the neutrino ensemble and
therefore the evolution of the system can always be described by a set of
one-particle equations. We also show that the previously accepted formalism
overcounts the neutrino interaction energy; the correct one-particle evolution
equations for both active-active and active-sterile oscillations contain
additional terms. These additional terms modify the index of refraction of the
neutrino medium, but have no effect on oscillation physics.


title:
Analysis of energy- and time-dependence of supernova shock effects on
  neutrino crossing probabilities

abstract:
  It has recently been realized that supernova neutrino signals may be affected
by shock propagation over a time interval of a few seconds after bounce. In the
standard three-neutrino oscillation scenario, such effects crucially depend on
the neutrino level crossing probability P_H in the 1-3 sector. By using a
simplified parametrization of the time-dependent supernova radial density
profile, we explicitly show that simple analytical expressions for P_H
accurately reproduce the phase-averaged results of numerical calculations in
the relevant parameter space. Such expressions are then used to study the
structure of P_H as a function of energy and time, with particular attention to
cases involving multiple crossing along the shock profile. Illustrative
applications are given in terms of positron spectra generated by supernova
electron antineutrinos through inverse beta decay.


title: Vector Manifestation of Chiral Symmetry

abstract:
  In this talk I summarize main features of the vector manifestation (VM) which
was recently proposed as a novel manifestation of the Wigner realization of
chiral symmetry in which the symmetry is restored at the critical point by the
massless degenerate pion (and its flavor partners) and the rho meson (and its
flavor partners) as the chiral partner. I show how the VM is formulated in the
effective field theory of QCD based on the hidden local symmetry and realized
in the large flavor QCD as well as in hot and/or dense QCD.


title: Exotic baryon states in topological soliton models

abstract:
  The novel observation of an exotic strangeness S=+1 baryon state at 1.54 GeV
will trigger an intensified search for this and other baryons with exotic
quantum numbers. This state was predicted long ago in topological soliton
models. We use this approach together with the new datum in order to
investigate its implications for the baryon spectrum. In particular we estimate
the positions of other pentaquark and septuquark states with exotic and with
non-exotic quantum numbers.


title: Large N dynamics in QED in a magnetic field

abstract:
  The expression for the dynamical mass of fermions in QED in a magnetic field
is obtained for a large number of the fermion flavor N in the framework of 1/N
expansion. The existence of a threshold value N_{thr}, dividing the theories
with essentially different dynamics, is established. For the number of flavors
N << N_{thr}, the dynamical mass is very sensitive to the value of the coupling
constant \alpha_b, related to the magnetic scale \mu = |eB|. For N of order
N_{thr} or larger, a dynamics similar to that in the Nambu-Jona-Lasinio model
with cutoff of order |eB| and the dimensional coupling constant G \sim
1/(N|eB|) takes place. In this case, the value of the dynamical mass is
essentially \alpha_b independent (the dynamics with an infrared stable fixed
point). The value of N_{thr} separates a weak coupling dynamics (with
\tilde{\alpha}_b \equiv N\alpha_b << 1) from a strong coupling one (with
\tilde{\alpha}_b \gtrsim 1) and is of order 1/\alpha_b.


title: Precision Electroweak Constraints on Hidden Local Symmetries

abstract:
  In this talk we discuss the phenomenology of models with replicated
electroweak gauge symmetries, based on a framework with the gauge structure
[SU(2) or U(1)] x U(1) x SU(2) x SU(2).


title: Review of chiral perturbation theory

abstract:
  A review of chiral perturbation theory and that of recent developments on the
comparison of its predictions with experiment is presented. Some interesting
topics with scope for further elaboration are touched upon.


title: Strong CP theta-problem in QCD and local gluon condensate

abstract:
  We calculate the contribution of local gluon condensate into the quadratic
theta-term of vacuum energy and discuss its application to the study of axion
mass.


title: Tables of convolution integrals

abstract:
  An analytical approach to convolution of functions, which appear in
perturbative calculations, is discussed. An extended list of integrals is
presented.


title:
Small x behavior of parton distributions with flat initial conditions. A
  study of higher-twist effects

abstract:
  We study the Q^2 evolution of parton distributions at small x values,
obtained in the case of flat initial conditions. The contributions of twist-two
and (renormalon-type) higher-twist operators of the Wilson operator product
expansion are taken into account. The results are in good agreement with deep
inelastic scattering experimental data from HERA.


title:
Centrality control of hadron-nucleus interactions by detection of slow
  nucleons

abstract:
  Slow nucleons emitted during a hadron-nucleus interaction can give
information on the centrality, impact parameter of the collision. The aim of
this note is to provide the reader with the important characteristics of the
slow nucleons, focusing on their spectra, correlations. This study tries to
build on evidences, hence more weight is put on experimental results than on
models.


title: Sliding Vacua in Dense Skyrmion Matter

abstract:
  In continuation of our systematic effort to understand hadronic matter at
high density, we study dense skyrmion matter and its chiral phase structure in
an effective field theory implemented with the trace anomaly of QCD applicable
in the large $N_c$ limit. By incorporating a dilaton field $\chi$ associated
with broken conformal symmetry of QCD into the simplest form of skyrmion
Lagrangian, we simulate the effect of "sliding vacua" influenced by the
presence of matter and obtain what could correspond to the ``intrinsic
dependence" on the background of the system, i.e., matter density or
temperature, that results when a generic chiral effective field theory of
strong interactions is matched to QCD at a matching scale near the chiral scale
$\Lambda_\chi \sim 4\pi f_\pi\sim 1$ GeV. The properties of the Goldstone pions
and the dilaton scalar near the chiral phase transition are studied by looking
at the pertinent excitations of given quantum numbers on top of a skyrmion
matter and their behavior in the vicinity of the phase transition from
Goldstone mode to Wigner mode characterized by the changeover from the FCC
crystal to the half-skyrmion CC crystal. We recover from the model certain
features that are connected to Brown-Rho scaling and that suggest how to give a
precise meaning to the latter in the framework of an effective field theory
that is matched to QCD .


title:
On the precision of chiral-dispersive calculations of $\pi\pi$
  scattering

abstract:
  We calculate the combination $2a_0^{(0)}-5a_0^{(2)}$ (the Olsson sum rule)
and the scattering lengths and effective ranges $a_1$, $a_2^{(I)}$ and $b_1$,
$b_2^{(I)}$ dispersively (with the Froissart--Gribov representation) using, at
low energy, the phase shifts for $\pi\pi$ scattering obtained by Colangelo,
Gasser and Leutwyler (CGL) from the Roy equations and chiral perturbation
theory, plus experiment and Regge behaviour at high energy, or directly, using
the CGL parameters for $a$s and $b$s. We find mismatch, both among the CGL
phases themselves and with the results obtained from the pion form factor. This
reaches the level of several (2 to 5) standard deviations, and is essentially
independent of the details of the intermediate energy region ($0.82\leq E\leq
1.42$ GeV) and, in some cases, of the high energy behaviour assumed. We discuss
possible reasons for this mismatch, in particular in connection with an
alternate set of phase shifts.


title:
Universality of the transverse momentum distributions in the framework
  of percolation of strings

abstract:
  In the framework of percolation of color sources, the transverse momentum
distribution in heavy ion and $p+p$ collisions at all centralities and energies
are shown to follow a universal behaviour. The width of the distribution
depends on the fluctuations of the number of color sources per cluster. At low
densities, there are only independent single color sources, no fluctuations
occurs and the distribution is described by a single exponential. At very high
densities, only one cluster of many color sources appears and therefore there
are not fluctuations either and the hardness of the distribution is suppressed.
The Cronin effect in this framework is due to a maximum of the fluctuations
which decreases as the density increases. We obtain a good agreement with
experimental data including the low $p_T$ behaviour and the spectra for
different particles. We show that the transverse momentum and multiplicity
distributions are related to each other in a defined way. This point is
satisfied by the experimental data on $p+p$ collisions at different energies.


title: Testing Higgs Triplet Model and Neutrino Mass Patterns

abstract:
  The observed neutrino oscillation data might be explained by new physics at a
TeV scale, which is testable in the future experiments. Among various
possibilities, the low-energy Higgs triplet model is a prime candidate of such
new physics since it predicts clean signatures of lepton flavor violating
processes directly related to the neutrino masses and mixing. It is discussed
how various neutrino mass patterns can be discriminated by examining the lepton
flavor violating decays of charged leptons as well as the collider signatures
of a doubly charged Higgs boson in the model.


title: Annihilation amplitudes and factorization in B to phi Kstar

abstract:
  We study the decay $B^\pm\to \phi K^{\ast\pm}$, followed by the decay of the
outgoing vector mesons into two pseudoscalars. The analysis of angular
distributions of the decay products is shown to provide useful information
about the annihilation contributions and possible tests of factorization.


title:
Neutralino Dark Matter, b-tau Yukawa Unification and Non-Universal
  Sfermion Masses

abstract:
  We study the implications of minimal non-Universal Boundary Conditions in the
sfermion Soft SUSY Breaking (SSB) masses of mSUGRA. We impose asymptotic b-tau
Yukawa coupling Unification and we resort to a parameterization of the
deviation from Universality in the SSB motivated by the multiplet structure of
SU(5) GUT. A set of cosmo-phenomenological constraints, including the recent
results from WMAP, determines the allowed parameter space of the models under
consideration. We highlight a new coannihilation corridor where
neutralino-sbottom and neutralino-tau sneutrino-stau coannihilations
significantly contribute to the reduction of the neutralino relic density.


title:
Order $\alpha_s^2$ perturbative QCD corrections to the Gottfried sum
  rule

abstract:
  The order $\alpha_s^2$ perturbative QCD correction to the Gottfried sum rule
is obtained. The result is based on numerical calculation of the order
$\alpha_s^2$ contribution to the coefficient function and on the new estimate
of the three-loop anomalous dimension term. The correction found is negative
and rather small. Therefore it does not affect the necessity to introduce
flavour-asymmetry between $\bar{u}$ and $\bar{d}$ antiquarks for the
description of NMC result for the Gottfried sum rule.


title:
Time-Series Analysis of Super-Kamiokande Measurements of the Solar
  Neutrino Flux

abstract:
  The Super-Kamiokande Consortium has recently released data suitable for
time-series analysis. The binning is highly regular: the power spectrum of the
acquisition times has a huge peak (power S > 120) at the frequency (in cycles
per year) 35.98 (period 10.15 days), where power measurements are such that the
probability of obtaining a peak of strength S or more by chance at a specified
frequency is exp(-S). This inevitably leads to severe aliasing of the power
spectrum. The strongest peak in the range 0 - 100 in a power spectrum formed by
a likelihood procedure is at 26.57 (period 13.75 days) with S = 11.26. For the
range 0 - 40, the second-strongest peak is at 9.42 (period 38.82 days) with S =
7.3. Since 26.57 + 9.42 = 35.99, we conclude that the weaker peak at 9.42 is an
alias of the stronger peak at 26.57. We note that 26.57 falls in the band 26.36
- 27.66, formed from twice the range of synodic rotation frequencies of an
equatorial section of the Sun for normalized radius larger than 0.1.
Oscillations at twice the rotation frequency, attributable to "m = 2"
structures, are not uncommon in solar data. We find from the shuffle test that
the probability of obtaining a peak of S = 11.26 or more by chance in this band
is 0.1 %. This new result therefore supports at the 99.9% confidence level
previous evidence, found in Homestake and GALLEX-GNO data, for rotational
modulation of the solar neutrino flux. The frequency 25.57 points to a source
of modulation at or near the tachocline.


title: Phenomenology of the Minimal SO(10) SUSY Model

abstract:
  In this talk I define what I call the minimal SO(10) SUSY model. I then
discuss the phenomenological consequences of this theory, vis a vis gauge and
Yukawa coupling unification, Higgs and super-particle masses, the anomalous
magnetic moment of the muon, the decay $B_s \to \mu^+ \mu^-$ and dark matter.


title:
Dynamically Spontaneous Symmetry Breaking and Masses of Lightest Nonet
  Scalar Mesons as Composite Higgs Bosons

abstract:
  Based on the (approximate) chiral symmetry of QCD Lagrangian and the bound
state assumption of effective meson fields, a nonlinearly realized effective
chiral Lagrangian for meson fields is obtained from integrating out the quark
fields by using the new finite regularization method. As the new method
preserves the symmetry principles of the original theory and meanwhile keeps
the finite quadratic term given by a physically meaningful characteristic
energy scale $M_c$, it then leads to a dynamically spontaneous symmetry
breaking in the effective chiral field theory. The gap equations are obtained
as the conditions of minimal effective potential in the effective theory. The
instanton effects are included via the induced interactions discovered by 't
Hooft and found to play an important role in obtaining the physical solutions
for the gap equations. The lightest nonet scalar mesons($\sigma$, $f_0$, $a_0$
and $\kappa$) appearing as the chiral partners of the nonet pseudoscalar mesons
are found to be composite Higgs bosons with masses below the chiral symmetry
breaking scale $\Lambda_{\chi} \sim 1.2$ GeV. In particular, the mass of the
singlet scalar (or the $\sigma$) is found to be $m_{\sigma} \simeq 677$ MeV.


title:
Grand Unification with Anomalous U(1) Symmetry and Non-abelian
  Horizontal Symmetry

abstract:
  Non-abelian horizontal symmetry has been considered to solve potentially SUSY
flavor problem, but simple models are suffering from various problems. In this
talk, we point out that (anomalous) U(1)_A gauge symmetry solves all the
problems in a natural way, especially, in the E_6 grand unified theories.
Combining the GUT scenario with anomalous U(1)_A gauge symmetry, in which
doublet-triplet splitting and natural gauge coupling unification are realized,
and realistic quark and lepton mass matrices are obtained including bi-large
neutrino mixings, complete E_6* SU(3)_H (or E_6*SU(2)_H) GUTs can be obtained,
in which all the three generation quarks and leptons are unified into a single
multiplet (27,3) (or two multiplets (27,2+1)). This talk is based on Ref.[1].


title: Standard Model CP violation in Polarised b->d l^+ l^-

abstract:
  In the standard model, we study CP violating rate asymmetries in the decay
b->d l^+ l^- when one of the leptons is polarised. We find an asymmetry of (5
-- 15)% in the polarised decay spectrum which is comparable to known results
for the unpolarised case. In the kinematic region separating the rho-omega and
$c \bar c$ resonances, which is also theoretically cleanest, the polarised
contribution to the asymmetry is larger than the unpolarised results. In order
to observe a 3 sigma signal for direct CP violation in the polarised spectrum,
assuming 100% efficiency, about 10^10 $B \bar B$ pairs are required at a B
factory. Our results indicate an asymmetric contribution from the individual
polarisation states to the unpolarised CP asymmetry. Taking advantage of this,
one can attribute any new physics to be most sensitive to a specific
polarisation state.


title:
The Structure Functions F_2^c, F_L and F_L^c in the Framework of the k_T
  Factorization

abstract:
  We present the perturbative parts of the structure functions F_2^c and F_L^c
for a gluon target having nonzero transverse momentum squared at order \alpha
_s. The results of the double convolution (with respect to the Bjorken variable
x and the transverse momentum) of the perturbative part and the unintegrated
gluon densities are compared with HERA experimental data for F_2^c and F_L at
low x values and with predictions of other approaches. The contribution from
F_L^c structure function ranges 10\div30% of that of F_2^c at the HERA
kinematical range.


title: On a two Pomeron description of the F_2 structure function

abstract:
  We perform a global fit to the inclusive structure function considering a QCD
inspired model describing the ep scattering. In lines of a two Pomeron
approach, the structure function F_2 has a hard piece given by the model and
the remaining soft contributions: the soft Pomeron and non-singlet content. We
have investigated several choices for the soft Pomeron and its implication in
the data description. In particular, we carefully estimated the relative role
of the hard and the soft contributions in a large span of x and Q^2.


title:
Lower Bound on the Neutralino Mass from New Data on CMB and Implications
  for Relic Neutralinos

abstract:
  In the frame of an effective MSSM model without gaugino-mass unification at a
grand unification (GUT) scale, we set a lower bound on the neutralino mass
based on the new WMAP data on $\Omega_{CDM}$. Our lower bound, $m_{\chi} \gsim
6$ GeV, leaves much room for relic neutralinos significantly lighter than those
commonly considered ($m_{\chi} \gsim 50$ GeV). We prove that these light
neutralinos may produce measurable effects in WIMP direct detection experiments
of low energy threshold and large exposure.


title: Lepton Flavour Violating Decays of Supersymmetric Higgs Bosons

abstract:
  We compute the lepton flavour violating couplings of Higgs bosons in the
Minimal Supersymmetric Standard Model, and show that they can induce the decays
(h,H,A) --> mu tau at non-negligible rates, for large tan(beta) and sizeable
smuon-stau mixing. We also discuss the prospects for detecting such decays at
LHC and other colliders, as well as the correlation with other flavour
violating processes, such as tau --> mu gamma and tau --> 3 mu.


title: Speed-up through entanglement -- many-body effects in neutrino processes

abstract:
  We study a system containing many particles of identical kinematics with a
zero range interaction that scatters one from the other, and with the possible
exchange of an attribute. Taking an initial condition in which the attribute is
asymmetrically distributed in the regions of momentum space occupied by the
particles, we study the rate at which it becomes uniformly distributed, through
collisions. We find, in some circumstances, a rate that is much faster than
that which would be estimated from cross-sections. This behavior is
attributable in some general sense to N-particle entanglement. We suggest
applications to neutrino physics, where the attribute is neutrino flavor.


title:
On the instanton-induced portion of the nucleon strangeness II: the MIT
  model beyond the linearized approximation

abstract:
  If instantons are introduced into the MIT bag model in such a way that bag
radii are allowed to vary, the MIT bag interior can accommodate instanton
density which is by an order of magnitude larger than in the case when the
radii are fixed (although it is still significantly smaller than in the
nonperturbative QCD vacuum). The instanton contribution to baryon mass shifts
is also correspondingly larger. The instanton-induced part of the scalar
strangeness of the nucleon MIT bag is an order of magnitude larger than found
previously, within the linearized approximation. The decrease of the model
radii (which is associated with the increase of the instanton density) is very
favorable from the standpoint of nuclear physics.


title: Lepton polarization correlations in $B \to K^* \tau^- \tau^+$

abstract:
  In this work we will study the polarizations of both leptons ($\tau$) in the
decay channel $B\to K^* \tau^- \tau^+$. In the case of the dileptonic inclusive
decay $B\to K^* \ell^- \ell^+$, where apart from the polarization asymmetries
of single lepton $\ell$, one can also observe the polarization asymmetries of
both leptons simultaneously. If this sort of measurement is possible then we
can have, apart from decay rate, FB asymmetry and the six single lepton
polarization asymmetries (three each for $\ell^-$ and $\ell^+$), nine more
double polarization asymmetries. This will give us a very useful tool in more
strict testing of SM and the physics beyond. We discuss the double polarization
asymmetries of $\tau$ leptons in the decay mode $B\to K^* \tau^- \tau^+$ within
the SM and the Minimal Supersymmetric extensions of it.


title: Role of Charm Factory in Extracting CKM-Phase Information via B --> DK

abstract:
  In this paper we study the impact of data that can be obtained from a Charm
Factory on the determination of the CKM parameter gamma from decays of the form
B -> D0 K where the D0 decays to specific inclusive and exclusive final states.
In particular, for each exclusive final state $f$, the charm factory can
determine the strong phase difference between D0-> f and D0-bar -> f by
exploiting correlations in psi(3770)-> D0 D0-bar. This provides crucial input
to the determination of gamma via the interference of B+- -> K+- D0 -> f with
B+- -> K+- D0-bar -> f. We discuss how the method may be generalized to
inclusive final states and illustrate with a toy model how such methods may
offer one of the best means to determine gamma with 10^8-10^9 B-mesons.


title: On deglobalization in QCD

abstract:
  The recent discovery and resummation of a class of single-logarithmic effects
(non-global logs), has a significant impact on several QCD observables ranging
from the classic Sterman-Weinberg jet definition to currently studied event
shapes and rapidity gap observables. The discovery of the above effects
overturns, for example, the common wisdom that hadronic energy flow in limited
interjet regions is dictated primarily by the colour flow in the underlying
hard partonic subprocess. We discuss some features of non-global logs and the
rapid progress being made in estimating and controlling such corrections.


title:
Chiral and U(1)_A restorations high in the hadron spectrum and the
  semiclassical approximation

abstract:
  In quantum systems with large $n$ (radial quantum number) or large angular
momentum the semiclassical (WKB) approximation is valid. A physical content of
the semiclassical approximation is that the quantum fluctuations effects are
suppressed and vanish asymptotically. The chiral as well as $U(1)_A$ breakings
in QCD is a result of quantum fluctuations. Hence these breakings must be
absent (suppressed) high in the spectrum and the spectrum of high-lying hadrons
must exhibit symmetries of the classical QCD Lagrangian.


title: Coherent Baryogenesis

abstract:
  We propose a new baryogenesis scenario based on coherent production and
mixing of different fermionic species. The mechanism is operative during phase
transitions, at which the fermions acquire masses via Yukawa couplings to
scalar fields. Baryon production is efficient when the mass matrix is
nonadiabatically varying, nonsymmetric and when it violates CP and B-L
directly, or some other charges that are eventually converted to B-L. We first
consider a toy model, which involves two mixing fermionic species, and then a
hybrid inflationary scenario embedded in a supersymmetric Pati-Salam GUT. We
show that, quite generically, a baryon excess in accordance with observation
can result.


title:
Shrinkage vs. anti-shrinkage of the diffraction cone in the exclusive
  vector mesons production

abstract:
  We investigate the energy behavior of the diffraction cone in the exclusive
vector meson production in diffractive DIS within the k_t-factorization
approach. In our calculations, we make full use of fits to the unintegrated
gluon structure functions extracted recently from experimental data on F_2p.
Confirming early predictions, we observe that shrinkage of the diffraction cone
due to the slope of the Pomeron trajectory is significantly compensated by the
anti-shrinkage behavior of the gamma -> V transition. In order to match recent
ZEUS data on the energy behavior of the diffraction slope,
alpha^prime_eff(J/psi, exp.) = 0.115 +/- 0.018 (stat.) +0.008-0.015(syst.)
GeV^-2, we had to use an input value alpha^\prime_Pomeron = 0.25 GeV^-2. We
investigate the compensation effect in detail and give predictions for
Q^2-dependence of the rate of cone shrinkage for different vector mesons.


title:
An $SU(2)_L\times U(1)_Y$ model with reflection symmetry in view of
  recent neutrino experimental result

abstract:
  We demonstrate that an $SU(2)_L\times U(1)_Y$ model with the same particle
content as Standard Model(SM) and discrete reflection symmetry between second
and third generation of leptons give rise to charged lepton and neutrino mass
matrices which can accommodate the present solar, atmospheric, WMAP neutrino
experimental results.The model predicts the value of $|U_{13}|$ which could be
tested in neutrino factories and the value of the effectiv Majorana neutrino
mass $<m_{ee}>$ comes out at the lower end of the present experimental limit.
Neutrino masses are generated through dim = 5 operators and the scale of which
is constrained by the value of $<m_{ee}>$. If, in future neutrino less double
beta decay experiments, namely, MOON, EXO, GENIUS etc. shifts the lower bound
on $<m_{ee}>}$ by one order the present model will fail to accommodate the
solar neutrino mixing angle due to LMA solution.


title:
The Bose-Einstein correlation function $C_2(Q)$ from a Quantum Field
  Theory point of view

abstract:
  We show that a recently proposed derivation of Bose-Einstein correlations
(BEC) by means of a specific version of thermal Quantum Field Theory (QFT),
supplemented by operator-field evolution of the Langevin type, allows for a
deeper understanding of the possible coherent behaviour of the emitting source
and a clear identification of the origin of the observed shape of the BEC
function $C_2(Q)$. Previous conjectures in this matter obtained by other
approaches are confirmed and have received complementary explanation.


title: Collective Modes of an Anisotropic Quark-Gluon Plasma

abstract:
  We analyze the collective modes of high-temperature QCD in the case when
there is an anisotropy in the momentum-space distribution function for the
gluons. We perform a tensor decomposition of the gluon self-energy and solve
the dispersion relations for both stable and unstable modes. Results are
presented for a class of anisotropic distribution functions which can be
obtained by stretching or squeezing an isotropic distribution function along
one direction in momentum space. We find that there are three stable modes and
either one or two unstable modes depending on whether the distribution function
is stretched or squeezed. The presence of unstable modes which have exponential
growth can lead to a more rapid thermalization and isotropization of the soft
modes in a quark gluon plasma and therefore may play an important role in the
dynamical evolution.


title: Time Variation of Fundamental Constants as a Probe of New Physics

abstract:
  Time variation of fundamental constants would not be surprising in the
framework of theories involving extra dimensions. The variation of any one
constant is likely to be correlated with variations of others in a pattern that
is diagnostic of the underlying physics.


title: Finite-Size Effects on Nucleation in a First-Order Phase Transition

abstract:
  We discuss finite-size effects on homogeneous nucleation in first-order phase
transitions. We study their implications for cosmological phase transitions and
to the hadronization of a quark-gluon plasma generated in high-energy heavy ion
collisions. Very general arguments allow us to show that the finite size of the
early universe has virtually no relevance in the process of nucleation and in
the growth of cosmological bubbles during the primordial quark-hadron and the
electroweak phase transitions. In the case of high-energy heavy ion collisions,
finite-size effects play an important role in the late-stage growth of hadronic
bubbles.


title:
Study of the $\eta\pi$ and $\eta'\pi$ spectra and interpetation of
  possible exotic $J^{PC}=1^{-+}$ mesons

abstract:
  We discuss a coupled channel analysis of the $\eta\pi$ and $\eta'\pi$ systems
produced in $\pi^-p$ interactions at 18 GeV/$c$. We show that known $Q\bar Q$
resonances, together with residual soft meson-meson rescattering, saturate the
spectra including the exotic $J^{PC}=1^{-+}$ channel. A possibility of a narrow
exotic resonance at a mass near 1.6 GeV/$c^2$ cannot, however, be ruled out.


title: Thermal Self-Energies Using Light-Front Quantization

abstract:
  A recent paper by Alves, Das, and Perez contains a calculation of the
one-loop self-energy in \phi^{3} field theory at T\neq 0 using light-front
quantization and concludes that the self-energy is different than the
conventional answer and is not rotationally invariant. The changes of variables
displayed below show that despite the complicated appearance of the thermal
self-energy in light-front variables, it is exactly the same as the
conventional result.


title:
The noncommutative effects on the dipole moments of fermions in the
  standard model

abstract:
  We study the dipole moments, electric dipole moment, weak electric dipole
moment, anomalous magnetic moment, anomalous weak magnetic moment, of fermions
in the noncommutative extension of the SM. We observe that the noncommutative
effects are among the possible candidates to explain the electric and weak
electric dipole moment of fermions. Furthermore, the upper bounds for the
parameters which carry space-time and space-space noncommutativity can be
obtained by using the theoretical and experimental results of the fermion
dipole moments.


title:
A Z-Monitor to Calibrate Higgs Production via Vector Boson Fusion with
  Rapidity Gaps at the LHC

abstract:
  We study central Z-boson production accompanied by rapidity gaps on either
side as a way to gauge Higgs weak boson fusion production at the LHC. We
analyse the backgrounds for the bb-decay mode and show that these can be
substantially reduced. Special attention is paid to the evaluation of the gap
survival factor, which is the major source of theoretical uncertainty in the
rate of H and Z central production events with rapidity gaps.


title: On brane-world black holes and short scale physics

abstract:
  There is evidence that trans-Planckian physics does not affect the Hawking
radiation in four dimensions and, consequently, deviations from the linear
dispersion relation (for massless particles) at very high energies cannot be
revealed using four-dimensional black holes. We study this issue in the context
of models with extra spatial dimensions and show that small black holes that
could be produced in accelerators might also provide a chance of testing the
high energy regime where non-linear dispersion relations are generally
expected.


title:
New physics effects in the rare B_s --> \gamma \ell^+ \ell^- decays with
  polarized photon

abstract:
  Using the most general model independent form of the effective Hamiltonian,
the rare B_s --> \gamma \ell^+ \ell^- decays are studied by taking into account
the polarization of the photon. The total and the differential branching ratios
for these decays, when photon is in the positive and negative helicity states,
are presented. Dependence of these observables on the new Wilson coefficients
are studied. It is also investigated the sensitivity of "photon polarization
asymmetry" in B_s --> \gamma \ell^+ \ell^- decays to the new Wilson
coefficients. It has been shown that all these physical observables are very
sensitive to the existence of new physics beyond SM and their experimental
measurements can give valuable information about it.


title:
Dark Matter And $B_s \to \mu^+ \mu^-$ With Minimal $SO_{10}$ Soft SUSY
  Breaking

abstract:
  CMSSM boundary conditions are usually used when calculating cosmological dark
matter densities. In this paper we calculate the cosmological density of dark
matter in the MSSM using minimal $SO_{10}$ soft SUSY breaking boundary
conditions. These boundary conditions incorporate several attractive features:
they are consistent with $SO_{10}$ Yukawa unification, they result in a
"natural" inverted scalar mass hierarchy and they reduce the dimension 5
operator contribution to the proton decay rate. With regards to dark matter, on
the other hand, this is to a large extent an unexplored territory with large
squark and slepton masses $m_{16}$, large $A_0$ and small $ \{\mu, M_{1/2} \}
$. We find that in most regions of parameter space the cosmological density of
dark matter is considerably less than required by the data. However there is a
well--defined, narrow region of parameter space which provides the observed
relic density of dark matter, as well as a good fit to precision electroweak
data, including top, bottom and tau masses, and acceptable bounds on the
branching fraction of $B_s \to \mu^+ \mu^-$. We present predictions for Higgs
and SUSY spectra, the dark matter detection cross section and the branching
ratio ${\rm BR}(B_s\to \mu^+ \mu^-)$ in this region of parameter space.


title: Baryogenesis in a flat direction with neither baryon nor lepton charge

abstract:
  We present a new mechanism of spontaneous baryogenesis. Usually such
mechanisms require a derivative coupling between a scalar field and baryon
current. In our model, the scalar field instead derivatively couples to a
current associated with some global symmetry $U(1)_Q$. In this case,
baryogenesis is still possible provided that an interaction exists, which
violates the baryon and $U(1)_Q$ symmetries simultaneously. As a concrete
example, we discuss baryogenesis in a flat direction with neither baryon nor
lepton charge.


title: $\eta - \eta'$ in a hot and dense medium

abstract:
  The behavior of $\eta$ and $\eta'$ in hot strange quark matter in weak
equilibrium with temperature, is investigated within the SU(3)
Nambu-Jona-Lasinio [NJL] model. Possible manifestations of restoration of
symmetries, by temperature or density, in the behavior of $\eta$ and $\eta'$
are discussed. The role played by the combined effect of temperature and
density in the nature of the phase transition and meson behavior is also
analyzed.


title: Neutrinos in 5D SO(10) Unification

abstract:
  We study neutrino physics in a 5D supersymmetric SO(10) GUT. We analyze
several different choices for realizing the See-Saw mechanism. We find that the
"natural" scale for the Majorana mass of right-handed neutrinos depends
critically on whether the right-handed neutrinos are located in the bulk or
localized on a brane. In the former case, the effective Majorana mass is
"naturally" of order the compactification scale, about 10^{14} GeV. Note, this
is the value necessary for obtaining a light tau neutrino mass approximately
10^{-2} eV which, within the context of hierarchical neutrino masses, is the
right order of magnitude to explain atmospheric neutrino oscillations. On the
other-hand when the right-handed neutrino is localized on the brane, the
effective Majorana mass is typically larger than the compactification scale.
Nevertheless with small parameters of order 1/10 - 1/30, an effective Majorana
mass of order 10^{14} GeV can be accommodated. We also discuss the constraints
on model building resulting from the different scenarios for locating the
right-handed neutrinos.


title:
Reconciling the Light Scalar Mesons with Breit-Wigner Resonances as well
  as the Quark Model

abstract:
  Resonances appearing in hadronic scattering processes are described by a
two-phase model. In the one phase, scattering products are observed, whereas
the other phase describes confinement. A so-called ``Resonance-Spectrum
Expansion'' is derived, containing expressions that resemble Breit-Wigner
formulae. This method also provides a straightforward explanation for the
origin of the light scalar mesons without requiring extra degrees of freedom.


title:
Joint Time-Series Analysis of Homestake and GALLEX-GNO Solar Neutrino
  Data: Evidence for Rieger-Type Periodicities and their Interpretation as
  R-Mode Oscillations

abstract:
  Previous power-spectrum analyses of the Homestake and GALLEX-GNO
radiochemical solar neutrino data have shown evidence of the effects of solar
rotation and also indications of oscillations with two periods that are well
known in solar physics: one at about 154 days period (the Rieger periodicity)
and another at about 52 days period. We here analyze both data sets, taken
together, to test the hypothesis that the above periodicities, and a related
periodicity with a period of about 77 days, are due to r-mode oscillations with
spherical harmonic indices l = 3 and m = 1, 2, and 3. These would have
frequencies nuR/6, nuR/3, and nuR/2, where nuR is the sidereal rotation rate
where the waves are excited. We first form a statistic that combines
information from power spectra formed from Homestake and GALLEX-GNO data. From
this statistic, we form another statistic to search for a sidereal rotation
frequency that leads simultaneously to four peaks in the Homestake-GALLEX-GNO
spectrum: one corresponding to the synodic rotation frequency nuR - 1, and the
other three corresponding to the l = 3 r-modes. We find that, in the range 0 to
20 cycles per year, there is one notable peak at 13.88 cycles per year; This
falls in the rotation frequency range of the radiative zone. The corresponding
synodic rotation period is 28.4 days, and the corresponding r-mode periods are
157, 78, and 52 days. By applying the shuffle test to the data, we find that
the probability of obtaining by chance a peak this big or bigger in the
rotation-frequency band of the radiative-zone is less than 0.1%. The modulation
of the neutrino flux is attributed to the poloidal motion of a magnetic
structure that moves in and out of the narrow beam of neutrinos that originate
in the solar core and are detected on Earth.


title:
Classification and Asymptotic Scaling of Hadron Light-Cone Wave-Function
  Amplitudes

abstract:
  We classify the hadron light-cone wave-function amplitudes in terms of parton
helicity, orbital angular momentum, and quark flavor and color symmetries. We
show in detail how this is done for the pion, $\rho$ meson, nucleon, and delta
resonance up to and including three partons. For the pion and nucleon, we also
consider four-parton amplitudes. Using the scaling law derived recently, we
show how these amplitudes scale in the limit that all parton transverse momenta
become large.


title: Higgsino Dark Matter in a SUGRA Model with Nonuniversal Gaugino Masses

abstract:
  We study a specific SUGRA model with nonuniversal gaugino masses as an
alternative to the minimal SUGRA model in the context of supersymmetric dark
matter. The lightest supersymmetric particle in this model comes out to be a
Higgsino dominated instead of a bino dominated lightest neutralino. The thermal
relic density of this Higgsino dark matter is somewhat lower than the
cosmologically favoured range, which means it may be only a subdominant
component of the cold dark matter. Nonetheless, it predicts favourable rates of
indirect detection, which can be seen in square-km size neutrino telescopes.


title: Dynamical Electroweak Symmetry Breaking from Extra Dimensions

abstract:
  We study the dynamical electroweak symmetry breaking (DEWSB) in the $D
(=6,8,...)$-dimensional bulk with compactified extra dimensions. We identify
the critical binding strength for triggering the DEWSB, based on the ladder
Schwinger-Dyson equation. In the top mode standard model with extra dimensions,
where the standard model gauge bosons and the third generation of quarks and
leptons are put in the bulk, we analyze the most attractive channel (MAC) by
using renormalization group equations (RGEs) of (dimensionless) bulk gauge
couplings and determine the effective cutoff where the MAC coupling exceeds the
critical value. We then find that the top-condensation can take place for D=8.
Combining RGEs of top-Yukawa and Higgs-quartic couplings with compositeness
conditions, we predict the top mass, $m_t=173-180$ GeV, and the Higgs mass,
$m_H=181-211$ GeV, for D=8, where we took the universal compactification scale
$1/R = 1-100$ TeV.


title:
Sudakov expansions at one loop and beyond for charged scalar and fermion
  pair production in SUSY models at future Linear Colliders

abstract:
  We consider the high energy behaviour of the amplitudes for pair production
of charged leptons, quarks, Higgs bosons, sleptons, squarks and charginos at
lepton colliders. We give the general expressions of the leading quadratic and
subleading linear logarithms that appear at the one loop level, and derive the
corresponding resummed expansions to \underline{subleading} logarithmic order
accuracy. Under the assumption of a relatively light SUSY scenario and choosing
the MSSM as a specific model, we compare the predictions of the one-loop and of
the resummed expansions at variable energy. We show that the two predictions
are very close in the one TeV regime, but drastically differ in the few ($2,3$)
TeV range.


title: $K_L \to \gamma \nu > \bar{\nu}$ decay beyond the standard model

abstract:
  The decay $K_L \to \gamma \nu \bar{\nu}$ is investigated beyond the standard
model. Interestingly, the upper limit of the CP-conserving and CP-violating
branching ratios of the decay, induced from the possible extensions of the
standard model, would be larger than the corresponding branching ratios given
in the standard model respectively, and it is expected that the CP-violating
part could be enhanced.


title:
On the Colour Suppressed Decay Modes B^0 --> D_s^+ D_s^- and B_s^0 -->
  D^+ D^-

abstract:
  We point out that the decay modes B^0 --> D_s^+ D_s^- and B_s^0 --> D^+ D^-
have no factorized contribution. At quark level these dacays can only proceed
through the annihilation mechanism, which in the factorized limit give zero
amplitude due to current conservation. In this paper, we identify the
dominating non-factorizable (colour suppressed) contributions in terms of two
chiral loop contributions and one soft gluon emission contribution. The latter
contribution can be calculated in terms of the (lowest dimension) gluon
condensate within a recently developed heavy-light chiral quark model. We find
braching ratios BR(B^0 --> D_s^+ D_s^-) = 7*10^-5 and BR(B^0_s --> D^+ D^-) =
1*10^-3.


title:
Three loop anomalous dimension of non-singlet quark currents in the RI'
  scheme

abstract:
  We renormalize QCD at three loops in the modified regularization invariant,
RI', scheme in arbitrary covariant gauge and deduce that the four loop
beta-function is equivalent to the MSbar result. The anomalous dimensions of
the scalar, vector and tensor currents are then determined in the RI' scheme at
three loops by considering the insertion of the operator in a quark two-point
function. The expression for the scalar current agrees with the quark mass
anomalous dimension and we deduce an expression for the four loop RI' mass
anomalous dimension in arbitrary covariant gauge and for any Lie group.


title:
Direct J/psi and psi' hadroproduction via fragmentation in the collinear
  parton model and k_T-factorization approach

abstract:
  The p_T-spectra for direct J/psi and psi' in hadroproduction at Tevatron
energy have been calculated based on NRQCD formalism and fragmentation
approximation in the collinear parton model and k_T-factorization approach. We
have described the CDF data and obtained a good agreement between the
predictions obtained in the parton model and k_T-factorization approach. We
performed the calculations using the relevant leading order in alpha_s hard
amplitudes and the equal values of the color-octet long-distance matrix
elements for the both models.


title:
Neutralino-Nucleon Cross Section and Charge and Colour Breaking
  Constraints

abstract:
  We compute the neutralino-nucleon cross section in several supersymmetric
scenarios, taking into account all kind of constraints. In particular, the
constraints that the absence of dangerous charge and colour breaking minima
imposes on the parameter space are studied in detail. In addition, the most
recent experimental constraints, such as the lower bound on the Higgs mass, the
$b\to s\gamma$ branching ratio, and the muon $g-2$ are considered. The
astrophysical bounds on the dark matter density are also imposed on the
theoretical computation of the relic neutralino density, assuming thermal
production. This computation is relevant for the theoretical analysis of the
direct detection of dark matter in current experiments. We consider first the
supergravity scenario with universal soft terms and GUT scale. In this scenario
the charge and colour breaking constraints turn out to be quite important, and
$\tan\beta\lsim 20$ is forbidden. Larger values of $\tan\beta$ can also be
forbidden, depending on the value of the trilinear parameter $A$. Finally, we
study supergravity scenarios with an intermediate scale, and also with
non-universal scalar and gaugino masses where the cross section can be very
large.


title: Spontaneous CP Violation in Non-Minimal Supersymmetric Models

abstract:
  We study the possibilities of spontaneous CP violation in the Next-to-Minimal
Supersymmetric Standard Model with an extra singlet tadpole term in the scalar
potential. We calculate the Higgs boson masses and couplings with radiative
corrections including dominant two loop terms. We show that it is possible to
satisfy the LEP constraints on the Higgs boson spectrum with non-trivial
spontaneous CP violating phases. We also show that these phases could account
for the observed value of epsilonK.


title: Fermions in the vortex background on a sphere

abstract:
  In 5+1 dimensions, we construct a vortex-like solution on a two-dimensional
sphere. We study fermionic zero modes in the background of this solution and
relate them to the replication of fermion families in the Standard Model. In
particular, using a compactified space removes the need for the difficult
localisation of gauge fields, while the present procedure (rather than naive
compactification on a disk) also removes spurious fermionic modes.


title: Unity of elementary particles and forces in higher dimensions

abstract:
  We present a model in which elementary particles and forces are unified in
the framework of quantum field theory in higher dimensions. The particles
include gauge bosons, quarks and leptons, as well as the Higgs bosons and the
forces include strong, weak, hypercharge as well as Yukawa interactions. The
model is based on a simple group SO(16) in six dimensions with N=2
supersymmetry. The gauge symmetry, as well as supersymmetry is broken to SU(4)
x SU(2)_L x SU(2)_R x U(1)^3 with N=1 supersymmetry upon compactification in
four dimension on a T^2/Z_6 orbifold.


title:
Nuclear Structure Functions at Small x from Inelastic Shadowing and
  Diffraction

abstract:
  Nuclear structure functions at small x and small or moderate $Q^2$ are
studied using the relation with diffraction on nucleons which arises from
Gribov's Reggeon Calculus. A reasonable description of experimental data is
obtained with no fitted parameters. A comparison with other models and
predictions for future lepton-ion colliders are provided. Consequences for the
reduction of multiplicities in nucleus-nucleus collisions at energies of RHIC
and LHC are examined.


title: Weak-scale implications of thermal leptogenesis in SUSY

abstract:
  Thermal leptogenesis is an attractive mechanism for generating the baryon
asymmetry of the Universe. However, in supersymmetric models, the parameter
space is severely restricted by the gravitino bound on the reheat temperature
$T_{RH}$. Using a parametrisation of the seesaw in terms of weak-scale inputs,
the low-energy footprints of thermal leptogenesis are discussed.


title:
The Effective Potential and Vacuum Stability within Universal Extra
  Dimensions

abstract:
  The one-loop effective potential calculated for a generic model that
originates from 5-dimensional theory reduced down to 4 dimensions is
considered. The cut-off and dimensional regularization schemes are discussed
and compared. It is demonstrated that the prescriptions are consistent with
each other and lead to the same physical consequences. Stability of the ground
state is discussed for a U(1) model that is supposed to mimic the Standard
Model extended to 5 dimensions. It has been shown that fermionic Kaluza-Klein
modes can dramatically influence the shape of the effective potential shifting
the instability scale even by several orders of magnitude.