title: Four-point functions and kaon decays in a minimal AdS/QCD model

abstract:
  We study the predictions of holographic QCD for various observable four-point
quark flavour current-current correlators. The dual 5-dimensional bulk theory
we consider is a $SU(3)_L \times SU(3)_R$ Yang Mills theory in a slice of
$AdS_5$ spacetime with boundaries. Particular UV and IR boundary conditions
encode the spontaneous breaking of the dual 4D global chiral symmetry down to
the $SU(3)_V$ subgroup. We explain in detail how to calculate the 4D four-point
quark flavour current-current correlators using the 5D holographic theory,
including interactions. We use these results to investigate predictions of
holographic QCD for the $\Delta I = 1/2$ rule for kaon decays and the $B_K$
parameter. The results agree well in comparison with experimental data, with an
accuracy of 25% or better. The holographic theory automatically includes the
contributions of the meson resonances to the four-point correlators. The
correlators agree well in the low-momentum and high-momentum limit, in
comparison with chiral perturbation theory and perturbative QCD results,
respectively.


title: Radiative Lifting of Flat Directions of the MSSM in de Sitter Background

abstract:
  The one-loop effective potential for a charged scalar field in de Sitter
background is studied. We derive an approximate form for the gauge boson
propagator with a general covariant gauge-fixing parameter \xi. This expression
is used to derive an explicitly gauge-invariant effective potential, which
agrees with earlier results obtained in Landau gauge. Adding the scalar- and
fermion-loop contributions, that arise in a supersymmetric Higgs model, we find
that the effective potential is vanishing to first order in the Hubble rate
H^2. The contribution due to a chiral multiplet running in the loop is however
non-vanishing. When applied to a flat direction of the MSSM with VEV w, a
logarithmically running correction of order $h^2 H^2 w^2$ arises, where h is
Yukawa coupling. This is of particular importance for D-term inflation or
models endowed with a Heisenberg symmetry, where Hubble scale mass terms for
flat directions from supergravity corrections are absent.


title: Photoabsorption cross sections at superhigh energies of real photons

abstract:
  The brief review of modern theoretical models describing the process of the
photon absorption by nucleons at superhigh energies of real photons is given.
The main aim of the work is an estimation of the theoretical uncertainty of the
cross section prediction at photon energies around 10^19-10^20 eV.


title: Application of Finite Groups to Neutrino Mass Matrices

abstract:
  Recent progress in the application of finite groups to neutrino mass matrices
is reviewed, with special emphasis on the tetrahedral symmetry A_4.


title: Nucleon Electromagnetic Form Factors

abstract:
  There has been much activity in the measurement of the elastic
electromagnetic proton and neutron form factors in the last decade, and the
quality of the data has been greatly improved by performing double polarization
experiments, in comparison with previous unpolarized data. Here we review the
experimental data base in view of the new results for the proton, and neutron,
obtained at MIT-Bates, MAMI, and JLab. The rapid evolution of phenomenological
models triggered by these high-precision experiments will be discussed,
including the recent progress in the determination of the valence quark
generalized parton distributions of the nucleon, as well as the steady rate of
improvements made in the lattice QCD calculations.


title: LHC Signals from Warped Extra Dimensions

abstract:
  We study production of Kaluza-Klein gluons (KKG) at the Large Hadron Collider
(LHC) in the framework of a warped extra dimension with the Standard Model (SM)
fields propagating in the bulk. We show that the detection of KK gluon is
challenging since its production is suppressed by small couplings to the
proton's constituents. Moreover, the KK gluon decays mostly to top pairs due to
an enhanced coupling and hence is broad. Nevertheless, we demonstrate that for
m_{KKG} \lesssim 4 TeV, 100 fb^{-1} of data at the LHC can provide discovery of
the KK gluon. We utilize a sizeable left-right polarization asymmetry from the
KK gluon resonance to maximize the signal significance, and we explore the
novel feature of extremely highly energetic "top-jets". We briefly discuss how
the detection of electroweak gauge KK states (Z/W) faces a similar challenge
since their leptonic decays (``golden'' modes) are suppressed. Our analysis
suggests that other frameworks, for example little Higgs, which rely on UV
completion via strong dynamics might face similar challenges, namely (1)
Suppressed production rates for the new particles (such as Z'), due to their
``light-fermion-phobic'' nature, and (2) Difficulties in detection since the
new particles are broad and decay predominantly to third generation quarks and
longitudinal gauge bosons.


title:
Top Quark Pairs at High Invariant Mass - A Model-Independent
  Discriminator of New Physics at the LHC

abstract:
  We study top quark pair production to probe new physics at the LHC. We
propose reconstruction methods for $t\bar{t}$ semileptonic events and use them
to reconstruct the $t\bar{t}$ invariant mass. The angular distribution of top
quarks in their c.m. frame can determine the spin and production subprocess for
each new physics resonance. Forward-backward asymmetry and CP-odd variables can
be constructed to further delineate the nature of new physics. We parametrize
the new resonances with a few generic parameters and show high invariant mass
top pair production may provide an early indicator for new physics beyond the
Standard Model.


title: Gauge Trimming of Neutrino Masses

abstract:
  We show that under a new U(1) gauge symmetry, which is non-anomalous in the
presence of one ``right-handed neutrino'' per generation and consistent with
the standard model Yukawa couplings, the most general fermion charges are
determined in terms of four rational parameters. This generalization of the B-L
symmetry with generation-dependent lepton charges leads to neutrino masses
induced by operators of high dimensionality. Neutrino masses are thus naturally
small without invoking physics at energies above the TeV scale, whether
neutrinos are Majorana or Dirac fermions. This ``Leptocratic'' Model predicts
the existence of light quasi-sterile neutrinos with consequences for cosmology,
and implies that collider experiments may reveal the origin of neutrino masses.


title:
Baryogenesis from Gravitational Decay of TeV-Particles in Theories with
  Low Scale Gravity

abstract:
  In models with the fundamental gravity scale in the TeV range, early
cosmology is quite different from the standard picture, because the universe
must have arisen at a much lower temperature and the electroweak symmetry was
probably never restored. In this context, baryogenesis appears to be
problematic: if the involved physics is essentially that of the Standard Model,
``conventional'' non-conserving baryon number processes are completely
negligible at such low temperatures. In this paper we show that the observed
matter-antimatter asymmetry of the universe may be generated by gravitational
decay of TeV-mass particles: such objects can be out of equilibrium after
inflation and, if their mass is of the same order of magnitude as the true
quantum gravity scale, they can quickly decay through a black hole intermediate
state, violating global symmetries, in particular, baryon number. In this
context, we take advantage of the fact that the ``Sakharov conditions'' for
baryogenesis can be more easily satisfied with a low fundamental scale of
gravity.


title:
QCD Prediction of $A_{TT}$ for Small $Q_T$ Dimuon Production in $pp$ and
  $p\bar{p} Collisions

abstract:
  We present QCD prediction of double-spin asymmetries ($A_{TT}$) in
transversely polarized Drell-Yan process at small transverse momentum $Q_T$ of
dimuon. Resummation of large logarithmic corrections, relevant in small $Q_T$
region, is performed up to next-to-leading logarithmic (NLL) accuracy. $A_{TT}$
at RHIC, J-PARC and GSI are studied numerically in the corresponding kinematic
regions.We show that the large $A_{TT}$ is obtained for small $Q_T$ and
moderate energies.


title:
A New Approach for Single Transverse-Spin Asymmetries from Twist-3
  Soft-Gluon Mechanism

abstract:
  A dominant QCD mechanism for the single transverse-spin asymmetry in hard
processes is induced by the twist-3 quark-gluon correlations inside nucleon,
combined with the soft-gluonic poles to produce the interfering phase for the
associated partonic hard scattering. It is shown that the corresponding
interfering amplitude can be calculated entirely in terms of the partonic Born
cross section which participates in the twist-2 cross section formula for the
spin-averaged process.


title:
The New Minimal Supersymmetric GUT : Spectra, RG analysis and fitting
  formulae

abstract:
  The Supersymmetric SO(10) GUT based on the ${\bf{210\oplus 10\oplus 120\oplus
126\oplus {\bar{126}}}}$ Higgs system has 40 real superpotential parameters of
which 2 can be fixed by the Light Higgs doublet fine tuning and one by the
determination of the unification scale by the RG flow. It provides a minimal
framework for the emergence of R-parity exact Supersymmetric Standard Model at
low energies and viable supersymmetric seesaw explanation for the observed
neutrino masses and mixing angles. We present complete formulae for MSSM
decomposition of the superpotential invariants, explicit GUT scale one step
spontaneous symmetry breaking down to the MSSM, tree level light charged
fermion effective yukawa couplings, Weinberg neutrino mass generation operator,
and the complete set of effectve superpotential coefficients of LLLL and RRRR
$d=5$ Baryon violating operators(which have contributions from novel
\textbf{120}-plet Higgs channels) in terms of GUT superpotential parameters. We
survey the gauge RG flow including threshold corrections due to the calculated
super heavy particle spectra. The formulae given are used in following papers
to determine complete realistic Susy SO(10) GUT fits of all MSSM data.


title:
Lepton Family Symmetry and Possible Application to the Koide Mass
  Formula

abstract:
  A finite group generated by four Z_3 transformations is applied to lepton
families in a supersymmetric model, resulting in the charged-lepton masses m_i
being proportional to v_i^2, where v_i are three vacuum expectation values.
This may be relevant in obtaining the Koide formula m_e + m_mu + m_tau =
(2/3)(sqrt{m_e} + sqrt{m_mu} + sqrt(m_tau})^2.


title: Supersymmetric And Smooth Hybrid Inflation In The Light Of WMAP3

abstract:
  In their minimal form both supersymmetric and smooth hybrid inflation yield a
scalar spectral index n_s close to 0.98, to be contrasted with the result
n_s=0.951+0.015-0.019 from WMAP3. To realize better agreement, following
hep-ph/0604198, we extend the parameter space of these models by employing a
non-minimal Kaehler potential. We also discuss non-thermal leptogenesis by
inflaton decay and obtain new bounds in these models on the reheat temperature
to explain the observed baryon asymmetry.


title: Majorana Dark Matter

abstract:
  In this letter in the framework of a simple see-saw scenario with two (or
three) quasi degenerate Majorana neutrinos we propose that one of these
neutrinos can be very weakly coupled, yet there is a mechanism of the
generation of the abundance of such "dark" neutrino in the early universe. The
mechanism of production is due to oscillations between "dark" Majorana neutrino
and one of the Majorana's which has relatively large Yukawa couplings ("bright"
Majorana neutrino). The transition of "bright" Majorana into a "dark" one is
nonadiabatic. We point out on the similarity with the Landau-Zener transition
regime. In our model one can explain the observed dark matter density, present
matter-antimatter asymmetry and active neutrino data all at the same time


title: Deeply Virtual Neutrino Scattering at Leading Twist

abstract:
  We illustrate the generalization of results concerning exclusive
electromagnetic processes in the deeply virtual limit (DVCS) to the case of the
weak interactions.We briefly describe the derivation of the differential cross
section for neutrino-nucleon reactions mediated by the neutral current and the
amplitude for similar reactions mediated by the charged currents.


title: GPDs, the structure of the proton and wide-angle Compton scattering

abstract:
  Results from a recent analysis of the zero-skewness generalized parton
distributions (GPDs) for valence quarks are reviewed. The analysis bases on a
physically motivated parameterization of the GPDs with a few free parameters
adjusted to the nucleon form factor data. Results for the GPDs are presented
and a number of applications such as moments, Ji's sum rule or their impact
parameter representation are discussed. The 1/x moments, in particular, form
the soft physics input to Compton scattering off protons within the handbag
approach. The Compton cross section evaluated from this information is found to
be in good agreement with experiment.


title: Color-spin locking in a self-consistent Dyson-Schwinger approach

abstract:
  We investigate the color-spin locked (CSL) phase of spin-one color-
superconducting quark matter using a truncated Dyson-Schwinger equation for the
quark propagator in Landau gauge. Starting from the most general parity
conserving ansatz allowed by the CSL symmetry, the Dyson-Schwinger equation is
solved self-consistently and dispersion relations are discussed. We find that
chiral symmetry is spontaneously broken due to terms which have previously been
neglected. As a consequence, the excitation spectrum contains only gapped modes
even for massless quarks. Moreover, at moderate chemical potentials the
quasiparticle pairing gaps are several times larger than expected from
extrapolated weak-coupling results.


title: High energy hadron production Monte Carlos

abstract:
  We discuss here Quantum molecular dynamics models (QMD) and Dual Parton
Models (DPM and QGSM). We compare RHIC data to DPM--models and we present a
(Cosmic ray oriented) model comparison.


title: Seesaw at LHC

abstract:
  We study the implementation of the type III seesaw in the ordinary
nonsupersymmetric SU(5) grand unified theory. This allows for an alternative
definition of the minimal SU(5) model, with the inclusion of the adjoint
fermionic multiplet. The main prediction of the theory is the light fermionic
SU(2) triplet with mass at the electroweak scale. Due to their gauge couplings,
these triplets can be produced pair-wise via Drell-Yan, and due to the Majorana
nature of the neutral component their decays leave a clear signature of same
sign di-leptons and four jets. This allows for their possible discovery at LHC
and provides an example of directly measurable seesaw parameters.


title: Low Energy Tests of the Standard Model with Spin Degrees of Freedom

abstract:
  After briefly reviewing the status of the standard model, I will focus mainly
on polarized electron scattering and other tests of the weak neutral current. I
will also address other low energy tests in which polarization degrees of
freedom play a crucial role, including precision muon physics and searches for
electric dipole moments.


title:
Probing NMSSM Scenarios with Minimal Fine-Tuning by Searching for Decays
  of the Upsilon to a Light CP-Odd Higgs Boson

abstract:
  Completely natural electroweak symmetry breaking is easily achieved in
supersymmetric models if there is a SM-like Higgs boson, $h$, with $m_h\lsim
100\gev$. In the minimal supersymmetric model, such an $h$ decays mainly to
$b\anti b$ and is ruled out by LEP constraints. However, if the MSSM Higgs
sector is expanded so that $h$ decays mainly to still lighter Higgs bosons,
e.g. $h\to aa$, with $BR(h\to aa)>0.7$, and if $m_a<2m_b$, then the LEP
constraints are satisfied. In this letter, we show that in the next-to-minimal
supersymmetric model the above $h$ and $a$ properties (for the lightest CP-even
and CP-odd Higgs bosons, respectively) imply a lower bound on $BR(\Upsilon\to
\gam a)$ that dedicated runs at present (and future) $B$ factories can explore.


title: Future Dependent Initial Conditions from Imaginary Part in Lagrangian

abstract:
  We want to unify usual equation of motion laws of nature with "laws" about
initial conditions, second law of thermodynamics, cosmology. By introducing an
imaginary part -- of a similar form but different parameters as the usual real
part -- for the action to be used in the Feynmann path way integral we obtain a
model determining (not only equations of motion but) also the initial
conditions, for say a quantum field theory. We set up the formalism for e.g.
expectation values, classical approximation in such a model and show that
provided the imaginary part gets unimportant except in the Big Bang era the
model can match the usual theory. Speculatively requiring that there be place
for Dirac strings and thus in principle monopoles in the model we can push away
the effects of the imaginary part to be involved only with particles not yet
found. Most promising for seeing the initial condition determining effects from
the imaginary part is thus the Higgs particle. We predict that the width of the
Higgs particle shall likely turn out to be (appreciably perhaps) broader than
calculated by summing usual decay rates. Higgs machines will be hit by bad
luck.


title:
Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal
  Seesaw Model

abstract:
  We present a review of neutrino phenomenology in the minimal seesaw model
(MSM), an economical and intriguing extension of the Standard Model with only
two heavy right-handed Majorana neutrinos. Given current neutrino oscillation
data, the MSM can predict the neutrino mass spectrum and constrain the
effective masses of the tritium beta decay and the neutrinoless double-beta
decay. We outline five distinct schemes to parameterize the neutrino
Yukawa-coupling matrix of the MSM. The lepton flavor mixing and baryogenesis
via leptogenesis are investigated in some detail by taking account of possible
texture zeros of the Dirac neutrino mass matrix. We derive an upper bound on
the CP-violating asymmetry in the decay of the lighter right-handed Majorana
neutrino. The effects of the renormalization-group evolution on the neutrino
mixing parameters are analyzed, and the correlation between the CP-violating
phenomena at low and high energies is highlighted. We show that the observed
matter-antimatter asymmetry of the Universe can naturally be interpreted
through the resonant leptogenesis mechanism at the TeV scale. The
lepton-flavor-violating rare decays, such as $\mu \to e + \gamma$, are also
discussed in the supersymmetric extension of the MSM.


title: Correlation between Leptonic CP Violation and mu-tau Symmetry Breaking

abstract:
  Considering the $\mu$-$\tau$ symmetry, we discuss a direct linkage between
phases of flavor neutrino masses and leptonic CP violation by determining three
eigenvectors associated with ${\rm\bf M}=M^\dagger_\nu M_\nu$ for a complex
flavor neutrino mass matrix $M_\nu$ in the flavor basis. Since the Dirac CP
violation is absent in the $\mu$-$\tau$ symmetric limit, leptonic CP violation
is sensitive to the $\mu$-$\tau$ symmetry breaking, whose effect can be
evaluated by perturbation. It is found that the Dirac phase ($\delta$) arises
from the $\mu$-$\tau$ symmetry breaking part of ${\rm\bf M}_{e\mu,e\tau}$ and
an additional phase ($\rho$) is associated with the $\mu$-$\tau$ symmetric part
of ${\rm\bf M}_{e\mu,e\tau}$, where ${\rm\bf M}_{ij}$ stands for an $ij$ matrix
element ($i,j$=$e,\mu,\tau$). The phase $\rho$ is redundant and can be removed
but leaves its effect in the Dirac CP violation characterized by $\sin (\delta
+ \rho)$. The perturbative results suggest the exact formula of mixing
parameters including that of $\delta$ and $\rho$, which turns out to be free
from the effects of the redundant phases. As a result, it is generally shown
that the maximal atmospheric neutrino mixing necessarily accompanies either
$\sin\theta_{13}=0$ or $\cos(\delta+\rho)=0$, the latter of which indicates
maximal CP violation, where $\theta_{13}$ is the $\nu_e$-$\nu_\tau$ mixing
angle.


title: Metastable Vacua in Flux Compactifications and Their Phenomenology

abstract:
  In the context of flux compactifications, metastable vacua with a small
positive cosmological constant are obtained by combining a sector where
supersymmetry is broken dynamically with the sector responsible for moduli
stabilization, which is known as the F-uplifting. We analyze this procedure in
a model-independent way and study phenomenological properties of the resulting
vacua.


title:
Non-universal gauge boson $Z'$ and the spin correlation of top quark
  pair production at $e^{-}e^{+}$ colliders

abstract:
  In the off-diagonal basis, we discuss the contributions of the non-universal
gauge boson $Z'$ predicted by the topcolor-assisted technicolor ($TC2$) model
to the spin configurations and the spin correlation observable of the top quark
pair production via the process $e^{-}e^{+}\to t\bar{t}$. Our numerical results
show that the production cross sections for the like-spin states, which vanish
in the standard model, can be significantly large as $M_{Z'}\approx \sqrt{S}$.
With reasonable values of the $Z'$ mass $M_{Z'}$ and the coupling parameter
$k_{1}$,
  $Z'$ exchange can generate large corrections to the spin correlation
observable.


title: Constraint on \Delta g(x) from \pi^0 production at RHIC

abstract:
  We determine the polarized gluon distribution \Delta g(x) by a global
analysis using current DIS and \pi^0 asymmetry data. The \pi^0 data from
RHIC-Spin experiments provide a strong constraint on \Delta g(x), so that its
uncertainty is reduced. However, a sign problem appears in the analysis using
\pi^0 data, which means that positive and negative distributions are allowed
for \Delta g(x). These two types of solutions are discussed.


title:
Constituent quark and diquark properties from small angle proton-proton
  elastic scattering at high energies

abstract:
  Small momentum transfer elastic proton-proton cross-section at high energies
is calculated assuming the nucleon composed of two constituents - a quark and a
diquark. A comparison to data (described very well up to -t = 2 GeV^2/c) allows
to determine some properties of the constituents. While quark turns out fairly
small, the diquark appears to be rather large, comparable to the size of the
proton.


title:
Possibilities for charged Higgs bosons at the LHC in a
  SU(3)$_L\otimesU(1)_N$ Model

abstract:
  We have studied the branching ratios of doubly charged Higgs bosons at the
LHC using a version of the SU(3)$_L\otimesU(1)_N$ electroweak model. At the end
of this work we have made a very simple plotting comparating the total cross
section of this model using Drell-Yan, gluon-gluon fusion and Left-right
symmetric model.


title: Parity violation and the nature of charges

abstract:
  The origin of parity violation in physics is still unknown. At the present
time, it is introduced in the theory by requiring that the SU(2) subgroup
entering the description of interactions involves the left components. In the
present contribution, one elaborates upon a suggestion made by Landau that
particles and antiparticles could be like "stereo-isomeric" molecules, which
would naturally provides parity violation. Particles and antiparticles could
thus be combinations of the parity doublets associated with a chiral symmetry
realized in the Wigner-Weyl mode. Consequences of such a description and the
possible problems it could raise are examined.


title: Seesaw mechanism and leptogenesis

abstract:
  A brief overview of the phenomenology related to the seesaw mechanism and the
baryogenesis via leptogenesis is presented. In particular, it is explained how
large but not maximal lepton mixing can be achieved within the type II seesaw
mechanism. Moreover, the consequences for leptogenesis are explored, including
flavor effects.


title: Tetraquark states and spectrum

abstract:
  A general classification of tetraquark states in terms of the spin-flavour,
colour and spatial degrees of freedom has been constructed. The permutational
symmetry properties of both the spin-flavour and orbital parts of the
quark-quark and antiquark-antiquark subsystems are discussed in short. This
classification is model indipendent and useful both for model-builders and
experimentalists. An evaluation of the tetraquark spectrum is obtained from a
generalization of a Iachello mass formula, originally developed for the $q\bar
q$ mesons. The ground state tetraquark nonet is identified with $f_{0}(600)$,
$\kappa(800)$, $f_{0}(980)$, $a_{0}(980)$.


title: A systematic study of J/psi suppression in cold nuclear matter

abstract:
  Based on a Glauber model, a statistical analysis of all mid-rapidity J/psi
hadroproduction and leptoproduction data on nuclear targets is carried out.
This allows us to determine the J/psi-nucleon inelastic cross section, whose
knowledge is crucial to interpret the J/psi suppression observed in heavy-ion
collisions, at SPS and at RHIC. The values of sigma are extracted from each
experiment. A clear tension between the different data sets is reported. The
global fit of all data gives sigma=3.4+/-0.2 mb, which is significantly smaller
than previous estimates. A similar value, sigma=3.5+/-0.2 mb, is obtained when
the nDS nuclear parton densities are included in the analysis, although we
emphasize that the present uncertainties on gluon (anti)shadowing do not allow
for a precise determination of sigma. Finally, no significant energy dependence
of the J/psi-N interaction is observed, unless strong nuclear modifications of
the parton densities are assumed.


title: Spectroscopy of tetraquark mesons

abstract:
  A classification of tetraquark states in terms of the spin-flavour, colour
and spatial degrees of freedom has been constructed. The permutational symmetry
properties of both the spin-flavour and orbital parts of the quark-quark and
antiquark-antiquark subsystems are briefly discussed. This classification is
useful both for model-builders and experimentalists. An evaluation of the
tetraquark spectrum is obtained from a Iachello mass formula for tetraquark
systems. The ground state tetraquark nonet is identified with $f_{0}(600)$,
$\kappa(800)$, $f_{0}(980)$, $a_{0}(980)$. The mass splittings predicted by
this mass formula are in agreement with the KLOE, Fermilab E791 and BES
experimental data.


title:
The explicit procedures for reconstruction of full set of helicity
  amplitudes in elastic proton-proton and proton-antiproton collisions

abstract:
  The explicit procedures are described for reconstruction of the full set of
helicity amplitudes in proton-proton and proton-antiproton elastic scattering.
The procedures are based on the derivative relations for the helicity
amplitudes in s-channel, on the explicit parametrization of the leading spin
non flip amplitudes and crossing - symmetry relations. Asymptotic theorems are
used for definition of free parameters in derivative relations. We also study
the Odderon influence on the helicity amplitude reconstruction. Reconstruction
procedures are valid at extremely wide energy domain and broad range of
momentum transfer. These procedures might be useful in studying the spin
phenomena in proton-proton and proton-antiproton elastic scattering.


title: Unitarisation of the hard pomeron and black-disk limit at the LHC

abstract:
  Recent models of soft diffraction include a hard pomeron pole besides the
usual soft term. Such models violate the black-disk limit around Tevatron
energies, so that they need to be supplemented by a unitarisation scheme.
Several such schemes are considered in this letter, where we show that they
lead to a large uncertainty at the LHC. We also examine the impact of
unitarisation on various small-t observables, the slope in t of the elastic
cross section, or the ratio of the real to imaginary parts of the scattering
amplitude, leading to the conclusion that the existence of a hard pomeron in
soft scattering may be confirmed by LHC data.


title: Neutrino Mixing and Neutrino Telescopes

abstract:
  Measuring flux ratios of ultra-high energy neutrinos is an alternative method
to determine the neutrino mixing angles and the CP phase delta. We conduct a
systematic analysis of the neutrino mixing probabilities and of various flux
ratios measurable at neutrino telescopes. The considered cases are neutrinos
from pion, neutron and muon-damped sources. Explicit formulae in case of mu-tau
symmetry and its special case tri-bimaximal mixing are obtained, and the
leading corrections due to non-zero theta_{13} and non-maximal theta_{23} are
given. The first order correction is universal as it appears in basically all
ratios. We study in detail its dependence on theta_{13}, theta_{23} and the CP
phase, finding that the dependence on theta_{23} is strongest. The flavor
compositions for the considered neutrino sources are evaluated in terms of this
correction. A measurement of a flux ratio is a clean measurement of the
universal correction (and therefore of theta_{13}, theta_{23} and delta) if the
zeroth order ratio does not depend on theta_{12}. This favors pion sources over
the other cases, which in turn are good candidates to probe theta_{12}. The
only situations in which the universal correction does not appear are certain
ratios in case of a neutron and muon-damped source, which depend mainly on
theta_{12} and receive only quadratic corrections from the other parameters. We
further show that there are only two independent neutrino oscillation
probabilities, give the allowed ranges of the considered flux ratios and of all
probabilities, and show that none of the latter can be zero or one.


title: Light custodians in natural composite Higgs models

abstract:
  We present a class of composite Higgs models arising from a warped extra
dimension that can satisfy all the electroweak precision tests in a significant
portion of their parameter space. A custodial symmetry plays a crucial role in
keeping the largest corrections to the electroweak observables below their
experimental limits. In these models the heaviness of the top quark is not only
essential to trigger the electroweak symmetry breaking, but it also implies
that the lowest top resonance and its custodial partners, the custodians, are
significantly lighter than the other resonances. These custodians are the
trademark of these scenarios. They are exotic colored fermions of
electromagnetic charges 5/3, 2/3 and -1/3, with masses predicted roughly in the
range 500-1500 GeV. We discuss their production and detection at the LHC.


title: On Kaon production in e+e- and Semi-inclusive DIS reactions

abstract:
  We consider semi-inclusive unpolarized DIS for the production of charged
kaons and the different possibilities to test the conventionally used
assumptions s-\bar=0 and D_d^{K^+-K^-}=0. The considered tests have the
advantage that they do not require any knowledge of the fragmentation
functions. We also show that measurements of both charged and neutral kaons
would allow the determination of the kaon FFs D_q^{K^++K^-} solely from SIDIS
measurements, and discuss the comparison of (D_u-D_d)^{K^+-K^-} obtained
independently in SIDIS and e+e- reactions. All analysis are performed in LO and
NLO in QCD. The feasibility of the tests to HERMES SIDIS data is considered.


title:
Casimir bag energy in the stochastic approximation to the pure QCD
  vacuum

abstract:
  We study the Casimir contribution to the bag energy coming from gluon field
fluctuations, within the context of the stochastic vacuum model (SVM) of pure
QCD. After formulating the problem in terms of the generating functional of
field strength cumulants, we argue that the resulting predictions about the
Casimir energy are compatible with the phenomenologically required bag energy
term.


title: Inferring neutrino cross sections above 10^19 eV

abstract:
  Extremely high energy neutrinos propagating in the atmosphere or in the Earth
can originate horizontal or upgoing air-showers, respectively. We calculate the
acceptances (event rate/flux) for detecting both types of events by
fluorescence detectors, both space-based as with the EUSO and OWL proposals,
and ground-based, as with Auger, HiRes and Telescope Array. We depict them as a
function of the neutrino-nucleon cross section and show that from the ratio of
these two classes of events, the inference of the cross section above 10^{19}
eV appears feasible, assuming that a neutrino flux exists at these energies.
Our semi-analytic calculation includes realistic energy-losses for tau leptons
and Earth-curvature effects. We also consider constraints on shower development
and identification and the effects of a cloud layer.


title:
Dispersive chiral approach to Meson-meson dynamics: Spectroscopy results
  for light scalars and precision studies

abstract:
  Dispersive approaches provide model independent description of meson-meson
scattering. We first review here the use of dispersion relations to obtain a
model independent unitarization of Chiral Perturbation Theory amplitudes, that
establish the existence of light scalar mesons and whose leading 1/N_c behavior
suggest they ahve a non q-qbar dominant component. We also review the forward
dispersion relation checks on conflicting experimental data and the resulting
very precise pion-pion scattering scattering amplitudes.


title: Total gluon shadowing due to fluctuation effects

abstract:
  We show a new physical phenomenon expected for the ratio R_{pA} of the
unintegrated gluon distribution of a nucleus over the unintegrated gluon
distribution of a proton scaled up by the atomic factor A^{1/3} in the
fluctuation-dominated (diffusive scaling) region at high energy. We calculate
the dependence of R_{pA} on the atomic number A, the rapidity Y and the
transverse gluon momentum k_{\perp}. We find that R_{pA} exhibits an increasing
gluon shadowing with growing rapidity, approaching 1/A^{1/3} at asymptotic
rapidities which means total gluon shadowing, due to the effect of gluon number
fluctuations or Pomeron loops. The increase of R_{pA} with rising gluon
momentum decreases as the rapidity grows. In contrast, in the geometric scaling
region where the effect of fluctuations is negligible, the ratio R_{pA} shows
only partial gluon shadowing in the fixed-coupling case, basically independent
on the rapidity and the gluon momentum.


title: Deconfinement

abstract:
  This is an attempt to summarize the talks of the session on
Deconfinement.This talk covers the following topics:Elliptic flow,high
transverse momentum production,propagation of jets and energy loss,heavy
quarqonia in dense QCD matter,phase transition,multiplicity fluctuations,long
range correlations, multiparticle production and thermalization


title: A Signal for a Theory of Flavor at the LHC

abstract:
  In Randall-Sundrum models with gauge bosons and fermions in the extra
dimensional bulk, it is possible to build models of flavor by localizing the
fermions in the extra dimension. Since the Higgs must be localized at or close
to the TeV scale fixed point, heavier fermions must be localized close to this
brane. The first Kaluza-Klein excitations of the gauge bosons are also
TeV-localized, so they have stronger couplings to heavier fermions leading to
tree-level flavor-violating couplings. We investigate the potential of the LHC
to observe flavor violation in single top production at very high invariant
masses, in addition to the observation of the corresponding top--anti-top
resonance. We conclude that the LHC will be able to observe tree-level flavor
violation in single top production, probing KK masses at least as large as 2
TeV, as well as a very interesting region of the parameters.


title: Background studies for a ton-scale argon dark matter detector (ArDM)

abstract:
  The ArDM project aims at operating a large noble liquid detector to search
for direct evidence of Weakly Interacting Massive Particles (WIMP) as Dark
Matter in the universe. Background sources relevant to ton-scale liquid and
gaseous argon detectors, such as neutrons from detector components,
muon-induced neutrons and neutrons caused by radioactivity of rock, as well as
the internal $^{39}Ar$ background, are studied with simulations. These
background radiations are addressed with the design of an appropriate shielding
as well as with different background rejection potentialities. Among them the
project relies on event topology recognition, event localization, density
ionization discrimination and pulse shape discrimination. Background rates,
energy spectra, characteristics of the background-induced nuclear recoils in
liquid argon, as well as the shielding performance and rejection performance of
the detector are described.


title: Low Energy Precision Test of Supersymmetry

abstract:
  Supersymmetry (SUSY) remains one of the leading candidates for physics beyond
the Standard Model, and the search for SUSY will be a central focus of future
collider experiments. Complementary information on the viability and character
of SUSY can be obtained via the analysis of precision electroweak measurements.
In this review, we discuss the prospective implications for SUSY of present and
future precision studies at low energy.


title: S_3 Symmetry and Neutrino Masses and Mixings

abstract:
  Based on a universal seesaw mass matrix model with three scalars \phi_i, and
by assuming an S_3 flavor symmetry for the Yukawa interactions, the lepton
masses and mixings are investigated systematically. In order to understand the
observed neutrino mixing, the charged leptons (e, \mu, \tau) are regarded as
the 3 elements (e_1, e_2, e_3) of S_3, while the neutrino mass-eigenstates are
regarded as the irreducible representation (\nu_\eta, \nu_\sigma, \nu_\pi) of
S_3, where (\nu_\pi, \nu_\eta) and \nu_\sigma are a doublet and a singlet,
respectively, which are composed of the 3 elements (\nu_1, \nu_2, \nu_3) of
S_3.


title:
The Oblique Corrections from Heavy Scalars in Irreducible
  Representations

abstract:
  The contributions to $S$, $T$, and $U$ from heavy scalars in any irreducible
representation of the electroweak gauge group $SU(2)_L\times U(1)_Y$ are
obtained. We find that in the case of a heavy scalar doublet there is a slight
difference between the $S$ parameter we have obtained and that in previous
works.


title:
Prospects to study a long-lived charged next lightest supersymmetric
  particle at the LHC

abstract:
  If the scalar tau $\stau$ is the next lightest supersymmetric particle and
decays into a gravitino ($\gravitino$) being the lightest supersymmetric
particle, it will have generally a very long lifetime. In this paper, we
investigate the possibility to study the decay of such a long lived scalar tau
at the LHC. If we can add to the present LHC experiments additional detectors
which are able to stop the stau particles and measure the produced decay
products, the decay characteristics can be studied precisely at the LHC. We
identify a maximum "stopper detector" that could be added in the CMS cavern,
and estimate the sensitivity to the lifetime of the stau and to the mass of
gravitino with this detector. The decay of the scalar tau may be significantly
modified if the decay channel to the axino $\axino$ is open. We study the
possibility to distinguish such decays from decays into gravitinos by measuring
the process $\stau\to \axino (\gravitino) \tau \gamma$ using the stopper
detector.


title: ${\bar {q}}q$ condensate for light quarks beyond the chiral limit

abstract:
  We determine the ${\bar{q}}q$ condensate for quark masses from zero up to
that of the strange quark within a phenomenologically successful modelling of
continuum QCD by solving the quark Schwinger-Dyson equation. The existence of
multiple solutions to this equation is the key to an accurate and reliable
extraction of this condensate using the operator product expansion. We explain
why alternative definitions fail to give the physical condensate.


title:
Quarkonia in the deconfined phase: effective potentials and lattice
  correlators

abstract:
  The Schroedinger equation for the charmonium and bottomonium states at finite
temperature is solved by employing an effective temperature dependent potential
given by a linear combination of the color singlet free and internal energies
obtained on the lattice from the Polyakov loop correlation functions. The
melting temperatures and other properties of the quarkonium states are
evaluated. The consistency of the potential model approach with the available
lattice data on the quarkonium temporal correlators and spectral functions is
explored.


title:
The single t-quark productions via the flavor-changing processes in the
  topcolor-assisted technicolor model at the hadron colliders

abstract:
  In the framework of topcolor-assisted technicolor(TC2) model, there exist
tree-level flavor-changing (FC) couplings which can result in the loop-level FC
coupling $tcg$. Such $tcg$ coupling can contribute significant clues at the
forthcoming Large Hadron Collider (LHC) experiments. In this paper, based on
the TC2 model, we study some single t-quark production processes involving
$tcg$ coupling at the Tevatron and LHC: $pp(p\bar{p})\to t\bar{q}(q=u,d,s),tg$.
We calculate the cross sections of these processes. The results show that the
cross sections at the Tevatron are too small to observe the signal, but at the
LHC it can reach a few pb. With the high luminosity, the LHC has considerable
capability to find the single t-quark signal produced via some FC processes
involving coupling $tcg$. On the other hand, these processes can also provide
some valuable information of the coupling $tcg$ with detailed study of the
processes and furthermore provide the reliable evidence to test the TC2 model.


title: Quantum field description of the finite-width effects

abstract:
  The model of unstable particles with random mass is suggested to describe the
finite-width effects. The phenomenological manifestation of mass smearing is
discussed in the framework of the model.


title:
Enhanced Emission and Accumulation of Antiprotons and Positrons from
  Supersymmetric Dark Matter

abstract:
  We estimate the amount of antiprotons and positrons in cosmic rays due to
neutralino annihilations in the galactic halo assuming that dark matter tends
to cluster and that these clusters are not disturbed by tidal forces. We find
that, assuming neutralinos annihilate mostly to gauge bosons, the amount of
antiprotons should exceed the number seen at BESS, whereas the increase in
positron flux is below the present detection threshold.


title: D Wave Heavy Mesons

abstract:
  We first extract the binding energy $\bar \Lambda$ and decay constants of the
D wave heavy meson doublets $(1^{-},2^{-})$ and $(2^{-},3^{-})$ with QCD sum
rule in the leading order of heavy quark effective theory. Then we study their
pionic $(\pi, K, \eta)$ couplings using the light cone sum rule, from which the
parameter $\bar \Lambda$ can also be extracted. We then calculate the pionic
decay widths of the strange/non-strange D wave heavy $D/B$ mesons and discuss
the possible candidates for the D wave charm-strange mesons. Further
experimental information, such as the ratio between $D_s\eta$ and $DK$ modes,
will be very useful to distinguish various assignments for $D_{sJ}(2860,
2715)$.


title: Infrared Sensitive Physics in QCD and in Electroweak Theory

abstract:
  I recall the main ideas about the treatment of QCD infrared physics, as
developed in the late seventies, and I outline some novel applications of those
ideas to Electroweak Theory.


title: Hadronic Interactions at Cosmic Ray Energies

abstract:
  General physics of very high energy hadronic interactions is discussed.
Special attention is payed to the contribution of semihard processes to the
interaction dynamics and to the role of parton shadowing and parton density
saturation. In particular, the implementation of non-linear interaction effects
in the QGSJET-II model is discussed in detail. The predictions of the model are
compared to selected accelerator data, including ones of the RHIC collider, and
the relation to the calculated extensive air shower characteristics is
discussed. Finally, the potential of accelerator and cosmic ray experiments for
constraining model predictions is analyzed.


title:
Baryon deceleration by strong chromofields in ultrarelativistic nuclear
  collisions

abstract:
  It is assumed that strong chromofields are generated at early stages of
ultrarelativistic heavy-ion collisions which give rise to a collective
deceleration of net baryons from colliding nuclei. We have solved classical
equations of motion for baryonic slabs under the action of a time-dependent
longitudinal chromoelectric field. It is demonstrated that the slab final
rapidities are rather sensitive to the strength and decay time of the
chromofield as well as to the back reaction of the produced partonic plasma.
The net-baryon rapidity loss of about 2 units, found for most central Au-Au
collisions at RHIC, can be explained by the action of chromofields with the
initial energy density of about 50 GeV/fm^3. Predictions for the baryon
stopping at the LHC are made.


title: Deconstruction and Elastic pi pi Scattering in Higgsless Models

abstract:
  We study elastic pion-pion scattering in global linear moose models and apply
the results to a variety of Higgsless models in flat and AdS space using the
Equivalence Theorem. In order to connect the global moose to Higgsless models,
we first introduce a block-spin transformation which corresponds, in the
continuum, to the freedom to perform coordinate transformations in the
Higgsless model. We show that it is possible to make an "f-flat" deconstruction
in which all of the f-constants f_j of the linear moose model are identical;
the phenomenologically relevant f-flat models are those in which the coupling
constants of the groups at either end of the moose are small - corresponding to
the global linear moose. In studying pion-pion scattering, we derive various
sum rules, including one analogous to the KSRF relation, and use them in
evaluating the low-energy and high-energy forms of the leading elastic partial
wave scattering amplitudes. We obtain elastic unitarity bounds as a function of
the mass of the lightest KK mode and discuss their physical significance.


title:
Quark loop contribution to BFKL evolution: Running coupling and
  leading-N_f NLO intercept

abstract:
  We study the sea quark contribution to the BFKL kernel in the framework of
Mueller's dipole model using the results of our earlier calculation. We first
obtain the BFKL equation with the running coupling constant. We observe that
the ``triumvirate'' structure of the running coupling found previously for
non-linear evolution equations is preserved for the BFKL equation. In fact, we
rederive the equation conjectured by Levin and by Braun, albeit for the
unintegrated gluon distribution with a slightly unconventional normalization.
We obtain the leading-N_f contribution to the NLO BFKL kernel in transverse
momentum space and use it to calculate the leading-N_f contribution to the NLO
BFKL pomeron intercept for the unintegrated gluon distribution. Our result
agrees with the well-known results of Camici and Ciafaloni and of Fadin and
Lipatov. We show how to translate this intercept to the case of the quark
dipole scattering amplitude and find that it maps onto the expression found by
Balitsky.


title:
Large t diffractive rho-meson photoproduction with target dissociation
  in ultraperipheral pA and AA collisions at LHC

abstract:
  We demonstrate that study of large t vector meson photoproduction with
rapidity gaps in ultraperipheral proton-ion and ion-ion collisions at LHC would
allow to investigate the energy dependence of cross section of elastic
scattering of a small dipole off the parton over a wide range of energies $10^3
< s_{dipole - parton} < 10^6 GeV^2$ where this cross section is expected to
change by a factor $\ge 20$. The accessible energy range exceeds the one
reached at HERA by a factor of 10 both in $\gamma p$ and in $\gamma A$
scattering. In addition, study of A-dependence of this process will allow to
determine the t range where interaction of small dipoles gives the dominant
contribution and to investigate effects of absorption for the propagation of
ultrarelativistic small $q\bar q$ dipoles through the nuclear media and probe
in a novel way onset of the black disk regime.


title: Resummed Mass Distribution for Jets Initiated by Massive Quarks

abstract:
  We resum the invariant mass distribution of jets initiated by massive quarks
in next-to-leading logarithmic approximation and beyond in heuristic way. We
find that the inclusion of mass terms, in the N-moment space, results in the
universal factor delta_N(Q^2;m^2), taking into account dead-cone effects and
soft radiation characteristic of massive charges. This factor multiplies the
massless jet distribution function J_N(Q^2). The variable N is rescaled by the
mass correction parameter r = m^2/Q^2 << 1 with respect to the standard
massless case, being m the quark mass and Q the hard scale. The functions
A(alpha_S) and B(alpha_S), appear with a minus sign suppressing collinear
effects at large N, as expected. In the same region, soft radiation not
collinearly enhanced, characteristic of massive charges, makes its appearance
with the function D(alpha_S). Phenomenological applications, such as the
resummation of b --> c l nu decay spectra or the inclusion of beauty mass
effects in t --> b W decays, are briefly sketched.


title: Is Strong Gravitational Radiation predicted by TeV-Gravity?

abstract:
  In TeV-gravity models the gravitational coupling to particles with energies
E\sim m_{Pl} \sim 10 TeV is not suppressed by powers of ultra-small ratio
E/M_{Pl} with M_{Pl} \sim 10^{19} GeV. Therefore one could imagine strong
synchrotron radiation of gravitons by the accelerating particles to become the
most pronounced manifestation of TeV-gravity at LHC. However, this turns out to
be not true: considerable damping continues to exist, only the place of
E/M_{Pl} it taken by a power of a ratio \theta\omega/E, where the typical
frequency \omega of emitted radiation, while increased by a number of
\gamma-factors, can not reach E/\vartheta unless particles are accelerated by
nearly critical fields. Moreover, for currently available magnetic fields B
\sim 10 Tesla, multi-dimensionality does not enhance gravitational radiation at
all even if TeV-gravity is correct.


title: The hadronic models for cosmic ray physics: the FLUKA code solutions

abstract:
  FLUKA is a general purpose Monte Carlo transport and interaction code used
for fundamental physics and for a wide range of applications. These include
Cosmic Ray Physics (muons, neutrinos, EAS, underground physics), both for basic
research and applied studies in space and atmospheric flight dosimetry and
radiation damage. A review of the hadronic models available in FLUKA and
relevant for the description of cosmic ray air showers is presented in this
paper. Recent updates concerning these models are discussed. The FLUKA
capabilities in the simulation of the formation and propagation of EM and
hadronic showers in the Earth's atmosphere are shown.


title: QCD corrections to single slepton production at hadron colliders

abstract:
  We evaluate the cross section for single slepton production at hadron
colliders in supersymmetric theories with R-parity violating interactions to
the next-to-leading order in QCD. We obtain fully differential cross section by
using the phase space slicing method. We also perform soft-gluon resummation to
all order in $\alpha_s$ of leading logarithm to obtain a complete transverse
momentum spectrum of the slepton. We find that the full transverse momentum
spectrum is peaked at a few GeV, consistent with the early results for
Drell-Yan production of lepton pairs. We also consider the contribution from
gluon fusion via quark-triangle loop diagrams dominated by the $b$-quark loop.
The cross section of this process is significantly smaller than that of the
tree-level process induced by the initial $b\bar{b}$ annihilation.


title: Precision Determination of $|V_{ub}|$

abstract:
  The last two years have seen an impressive improvement in the determination
of $|V_{ub}|$, especially from inclusive decays. The error on $|V_{ub}|$
measured with inclusive decays was reduced from 18% (PDG 2004) to 8% (PDG
2006). This progress is a result of combined experimental and theoretical
efforts. In this talk, the theoretical framework (BLNP) that enabled such
progress is reviewed, as well as other approaches to an inclusive determination
of $|V_{ub}|$ (DGE, $M_X-q^2$ etc.). The prospects of improving $|V_{ub}|$ are
discussed, addressing issues of weak annihilation, implications of leptonic B
decays, and determination of $|V_{ub}|$ with exclusive decays.


title: Prospects for Multiple Weak Gauge Boson Signals at Hadron Colliders

abstract:
  We review the status of theoretical calculations relevant for electroweak
physics at hadron colliders. The large parton flux at high energy gives rise to
events where different pairs of partons interact contemporarily with large
momentum exchange. We present calculations of the cross-section for two, three
and four weak gauge bosons production in single and multiparton interactions.


title: A 3 X 2 texture for neutrino oscillations and leptogenesis

abstract:
  In an economical system with only two heavy right handed neutrinos, we
postulate a new texture for $3 \times 2$ Dirac mass matrix $m_D$. This model
implies one massless light neutrino and thus displays only two patterns of mass
spectrum for light neutrinos, namely hierarchical or inverse-hierarchical. Both
the cases can correctly reproduce all the current neutrino oscillation data
with a unique prediction $m_{\nu_e \nu_e} = \frac{\sqrt{\Delta
m^2_{solar}}}{3}$ and $\sqrt{\Delta m^2_{atm}}$ for the hierarchical and the
inverse-hierarchica cases, respectively, which can be tested in next generation
neutrino-less double beta decay experiments. Introducing a single physical CP
phase in $m_D$, we examine baryon asymmetry through leptogenesis.
Interestingly, through the CP phase there are correlations between the amount
of baryon asymmetry and neutrino oscillation parameters. We find that for a
fixed CP phase, the hierarchical case also succeeds in generating the observed
baryon asymmetry in our universe, plus a non-vanishing $U_{e3}$ which is
accessible in future baseline neutrino oscillation experiments.


title: $A_4$ Group and Tri-bimaximal Neutrino Mixing -- A Renormalizable Model

abstract:
  The tetrahedron $A_4$ group has been widely used in studying neutrino mixing
matrix. It provides a natural framework of model building for the tri-bimaximal
mixing matrix. In this class of models, it is necessary to have two Higgs
fields, $\chi$ and $\chi'$, transforming under $A_4$ as 3 with one of them
having vacuum expectation values for the three components to be equal and
another having only one of the components to be non-zero. These specific vev
structures require separating $\chi$ and $\chi'$ from communicating with each
other. The clash of the different vev structures for $\chi$ and $\chi'$ is the
so called sequestering problem. In this work, I show that it is possible to
construct renormalizable supersymmetric models producing the tri-bimaximal
neutrino mixing with no sequestering problem.


title: B->V gamma Beyond QCD Factorisation

abstract:
  We calculate the main observables in $B_{u,d}\to (\rho,\omega,K^*)\gamma$ and
$B_s\to (\bar K^*,\phi)\gamma$ decays, i.e. branching ratios and CP and isospin
asymmetries. We include QCD factorisation results and also the dominant
contributions beyond QCD factorisation, namely long-distance photon emission
and soft-gluon emission from quark loops. All contributions beyond QCD
factorisation are estimated from light-cone sum rules. We devise in particular
a method for calculating soft-gluon emission, building on earlier ideas
developed for analogous contributions in non-leptonic decays. Our results are
relevant for new-physics searches at the $B$ factories, the LHC and a future
super-flavour factory. Using current experimental data, we also extract
$|V_{td}/V_{ts}|$ and the angle $\gamma$ of the unitarity triangle. We give
detailed tables of theoretical uncertainties of the relevant quantities which
facilitates future determinations of these CKM parameters from updated
experimental results.


title: Lowering the critical temperature with eight-quark interactions

abstract:
  It is shown that eight-quark interactions, which are needed to stabilize the
ground state of the combined three flavor Nambu -- Jona-Lasinio and 't Hooft
Lagrangians, play also an important role in determining the critical
temperature at which transitions occur from the dynamically broken chiral phase
to the symmetric phase.


title: Taming the end-point singularities in heavy-to-light decays

abstract:
  It is argued that there is a fundamental momentum cutoff in heavy-to-light
transitions, which is caused by possible Cherenkov gluon radiation when an
energetic light parton travels through the ''brown muck''. The soft-overlap
contributions where the partonic momenta configuration is highly asymmetric are
disfavored, and the problematic end-point singularities and the double
countings are absent in this framework. A simple calculation with a natural
scale for the cutoff gives a plausible result for the $B\to\pi$ form factor.


title:
Decay Constants of Pseudoscalar Mesons in Bethe-Salpeter Framework with
  Generalized Structure of Hadron-Quark Vertex

abstract:
  We employ the framework of Bethe-Salpeter equation under Covariant
Instantaneous Ansatz to study the leptonic decays of pseudoscalar mesons. The
Dirac structure of hadron-quark vertex function $\Gamma $ is generalized to
include various Dirac covariants besides $\gamma_5 $ from their complete set.
The covariants are incorporated in accordance with a power counting rule, order
by order in powers of the inverse of the meson mass. The decay constants are
calculated with the incorporation of leading order covariants. Most of the
results are dramatically improved.


title: Mass gap from pressure inequalities

abstract:
  We prove that a temperature independent mass distribution is identically zero
below a mass threshold (mass gap) value, if the pressure satisfies certain
inequalities. This supports the finding of a minimal mass in quark matter
equation of state by numerical estimates and by substitution of analytic
formulas. We present a few inequalities for the mass distribution based on the
Markov inequality.


title: A Relativistic Flux-tube Model for Hybrid Mesons

abstract:
  A number of authors have considered potential models for hybrid mesons. These
frequently involve approximating the vibrating flux-tube by a set of beads, and
making an adiabatic approximation which gives rise to a static inter-quark
potential which has an effective repulsive 1/r potential. We show that this
approximation is almost certainly wrong. Since the beads are presumably
massless, the correct approximation requires the solution of a
Klein-Gordon-like equation treating the beads and the quarks on the same
footing. We show how to solve this in the one-bead case for massless quarks,
and find the spectrum has an unexpected degeneracy. We generalise this to the
N-bead case, which can still be solved exactly for massless quarks, and show
how to renormalize the energy to obtain a plausible spectrum. We give a generic
method to solve the equation for massive quarks, and use this to derive a
different non-relativistic equation. The results show a smooth behaviour both
with respect to the quark mass and the number of beads.


title: Collins Effect from Polarized SIDIS and $e^+e^-$ Data

abstract:
  The recent data on the transverse single spin asymmetry
$A_{UT}^{\sin(\phi_h+\phi_S)}$ from HERMES and COMPASS Collaborations are
analysed within LO parton model with unintegrated parton distribution and
fragmentation functions. A fit of SIDIS data from HERMES Collaboration is
performed leading to the extraction of favoured and unfavoured Collins
fragmentation functions. A very good description of COMPASS data is obtained.
BELLE $e^+e^-$ data are shown to be compatible with our estimates based on the
extracted Collins fragmentation functions. Predictions for
$A_{UT}^{\sin(\phi_h+\phi_S)}$ asymmetries at JLab and COMPASS operating on a
proton target are given.


title: CP violation in charged Higgs decays in the MSSM

abstract:
  In the MSSM with complex parameters loop corrections to the decays $H^+ \to t
\bar{b}$ and $H^- \to \bar{t} b$ with $t \to b W$ and $W \to l \nu$ lead to
CP-violating asymmetries: a decay rate asymmetry, a forward-backward asymmetry
and an energy asymmetry. We derive explicit formulas for them and perform a
detailed numerical analysis. We study the dependence on the parameters and the
phases involved. In particular, the influence of the running Yukawa coupling is
taken into account. The decay rate asymmetry can go up to 25%, the
forward-backward and the energy asymmetry up to 10%.


title:
Unitarity Cuts with Massive Propagators and Algebraic Expressions for
  Coefficients

abstract:
  In the first part of this paper, we extend the d-dimensional unitarity cut
method of hep-ph/0609191 to cases with massive propagators. We present formulas
for integral reduction with which one can obtain coefficients of all pentagon,
box, triangle and massive bubble integrals. In the second part of this paper,
we present a detailed study of the phase space integration for unitarity cuts.
We carry out spinor integration in generality and give algebraic expressions
for coefficients, intended for automated evaluation.


title: Direct Detection of Physics Beyond the Standard Model

abstract:
  In supersymmetric theories where the lightest supersymmetric particle is the
gravitino the next to lightest supersymmetric particle (NLSP) is typically a
long lived charged slepton. These NLSPs can be produced by high energy
neutrinos interactions with nucleons in the Earth and be detected by km$^3$
neutrino telescopes. The signal, consists of two parallel charged tracks
separated by a few hundred meters. This is compared to the main background,
coming from direct di-muon production. The distance between the background
tracks is much smaller and allows for a clean separation from the NLSP signal.
We conclude that neutrino telescopes will complement collider searches in the
determination of the supersymmetry breaking scale, and may even provide the
first evidence for supersymmetry at the weak scale.


title: $\gamma^*p$ cross section from the dipole model in momentum space

abstract:
  We reproduce the DIS measurements of the proton structure function at high
energy from the dipole model in momentum space. To model the dipole-proton
forward scattering amplitude, we use the knowledge of asymptotic solutions of
the Balitsky-Kovchegov equation, describing high-energy QCD in the presence of
saturation effects. We compare our results with the previous analysis in
coordinate space and discuss possible extensions of our approach.


title:
Sterile neutrino production via active-sterile oscillations: the quantum
  Zeno effect

abstract:
  We study several aspects of the kinetic approach to sterile neutrino
production via active-sterile mixing. We obtain the neutrino propagator in the
medium including self-energy corrections up to $\mathcal{O}(G^2_F)$, from which
we extract the dispersion relations and damping rates of the propagating modes.
The dispersion relations are the usual ones in terms of the index of refraction
in the medium, and the damping rates are $\Gamma_1(k) = \Gamma_{aa}(k)
\cos^2\theta_m(k); \Gamma_2(k) = \Gamma_{aa}(k) \sin^2\theta_m(k)$ where
$\Gamma_{aa}(k)\propto G^2_F k T^4$ is the active neutrino scattering rate and
$\theta_m(k)$ is the mixing angle in the medium. We provide a generalization of
the transition probability in the \emph{medium from expectation values in the
density matrix}: $ P_{a\to s}(t) = \frac{\sin^22\theta_m}{4}[e^{-\Gamma_1t} +
e^{-\Gamma_2 t}-2e^{-{1/2}(\Gamma_1+\Gamma_2)t} \cos\big(\Delta E t\big)] $ and
study the conditions for its quantum Zeno suppression directly in real time. We
find the general conditions for quantum Zeno suppression, which for $m_s\sim
\textrm{keV}$ sterile neutrinos with $\sin2\theta \lesssim 10^{-3}$ \emph{may
only be} fulfilled near an MSW resonance. We discuss the implications for
sterile neutrino production and argue that in the early Universe the wide
separation of relaxation scales far away from MSW resonances suggests the
breakdown of the current kinetic approach.


title: The Anatomy of the Knee and Gamma-Families

abstract:
  It is shown that the fine stucture of the cosmic ray energy spectrum in the
knee region, if explained by the Single Source Model (SSM), can, in principle,
be clearly revealed and magnified in the size spectrum of extensive air showers
(EAS) associated with gamma families. Existing experimental data on EAS at
mountain level give support to this hypothesis.


title: Drell-Yan processes, transversity and light-cone wavefunctions

abstract:
  The unpolarized, helicity and transversity distributions of quarks in the
proton are calculated in the overlap representation of light-cone wavefunctions
truncated to the lowest order Fock-space components with three valence quarks.
The three distributions at the hadronic scale satisfy an interesting relation
consistent with the Soffer inequality. Results are derived in a relativistic
quark model including radiative corrections up to the next-to-leading order.
Predictions for the double transverse-spin asymmetry in Drell-Yan dilepton
production initiated by proton-antiproton collisions are presented. Asymmetries
of about 20-30% are found in the kinematic conditions of the PAX experiment.


title: On axially symmetrical solitons in Abelian-Higgs models

abstract:
  A numerical search for bosonic superconducting static vortex rings in a
$U(1)_{A}\times U(1)_{W}$ model is presented. The fate of these rings without
current, is to shrink due to their tension until extinction. The
superconductivity of the loop does not seem to prevent shrinking. Current
quenching takes place before stabilization.


title: Chiral logarithms to five loops

abstract:
  We investigate two specific Green functions in the framework of chiral
perturbation theory. We show that, using analyticity and unitarity, their
leading logarithmic singularities can be evaluated in the chiral limit to any
desired order in the chiral expansion, with a modest calculational cost. The
claim is illustrated with an evaluation of the leading logarithm for the scalar
two-point function to five-loop order.


abstract:
  Upper limits on neutrino masses from cosmology have been reported recently to
reach the impressive sub-eV level, which is competitive with future terrestrial
neutrino experiments. In this brief overview of the latest limits from
cosmology I point out some of the caveats that should be borne in mind when
interpreting the significance of these limits.


title:
On the Particle Interpretation of the PVLAS Data: Neutral versus Charged
  Particles

abstract:
  Recently the PVLAS collaboration reported the observation of a rotation of
linearly polarized laser light induced by a transverse magnetic field - a
signal being unexpected within standard QED. Two mechanisms have been proposed
to explain this result: production of a single (pseudo-)scalar particle coupled
to two photons or pair production of light millicharged particles. In this
work, we study how the different scenarios can be distinguished. We summarize
the expected signals for vacuum magnetic dichroism (rotation) and birefringence
(ellipticity) for the different types of particles - including new results for
the case of millicharged scalars. The sign of the rotation and ellipticity
signals as well as their dependencies on experimental parameters, such as the
strength of the magnetic field and the wavelength of the laser, can be used to
obtain information about the quantum numbers of the particle candidates and to
discriminate between the different scenarios. We perform a statistical analysis
of all available data resulting in strongly restricted regions in the parameter
space of all scenarios. These regions suggest clear target regions for upcoming
experimental tests. As an illustration, we use preliminary PVLAS data to
demonstrate that near future data may already rule out some of these scenarios.


title:
Simulation of a Cross Section and Mass Measurement of a SM Higgs Boson
  in the H->WW->lvlv Channel at the LHC

abstract:
  The potential to discover a Standard-Model-like Higgs boson at the LHC in the
mass range from 150-180 GeV, decaying into a pair of W bosons with subsequent
leptonic decays, has been established during the last 10 years. Assuming that
such a signal will eventually be observed, the analysis described in this paper
investigates how accurate the signal cross section can be measured and how the
observable lepton pt spectra can be used to constrain the mass of the Higgs
boson. Combining the signal cross section with the analysis of the lepton pt
spectra and assuming the SM Higgs cross section is known with an accuracy of
+-5%, our study indicates that an integrated luminosity of about 10 fb-1 allows
to measure the mass of a SM Higgs boson with an accuracy between 2 and 2.5 GeV.


title: Hidden sector renormalization of MSSM scalar masses

abstract:
  Running of gauge couplings in the MSSM from a unified value at high energies
leads to a successful prediction of the weak mixing angle. Supersymmetric
models at the TeV scale may contain further hints of high scale physics, such
as the pattern of superpartner masses when evolved from the TeV scale to a high
scale using the renormalization group. This running is traditionally assumed to
be independent of effects in the hidden sector. In this paper we re-examine
this assumption, and conclude that the predictions for scalar masses may depend
sensitively on the details of the mechanism of supersymmetry breaking. We
identify mass relations that persist even when such effects are taken into
account.


title: Phase Direct CP Violations and General Mixing Matrices

abstract:
  I formulate expressions for amplitudes suitable for quantifying both modulus
and phase direct CP violations. They result in M\"{o}bius transformation (MT)
relations, which provide encouraging information for the search of direct CP
violations in general. I apply the formulation to calculate the measurements of
phase direct CP violations and strong amplitudes in $B^{\mp}\to
K^{\mp}\pi^{\pm}\pi^{\mp}$ by the Belle collaboration. For the formulation, I
show a versatile construction procedure for $N\times N$
Cabibbo-Kobayashi-Maskawa (CKM) matrices, Pontecorvo-Maki-Nakagawa-Sakata
(PMNS) matrices, and general unitary matrices. It clarifies the $3\times3$
cases and is useful for the beyond.


title: Phenomenology of Two-Texture Zero Neutrino Mass Matrices

abstract:
  The generic predictions of two-texture zero neutrino mass matrices in the
flavor basis have been examined especially in relation to the degeneracies
between mass matrices within a class and interesting constraints on the
neutrino parameters have been obtained. It is shown that the knowledge of the
octant of $\theta_{23}$, the sign of $\cos\delta$ and neutrino mass hierarchy
can be used to lift these degeneracies.


title:
UCLA Space-Time Area Law Model: A Persuasive Foundation for
  Hadronization

abstract:
  From the studies of rates and distributions of heavy quark mesons we have
developed additional evidence that hadron formation is dominantly controlled by
a Space-Time Area Law, an approach suggested by both non-perturbative QCD and
Relativistic String Models.


title: Search for the Light Charged Higgs in CMS

abstract:
  In this report the CMS potential for the light charged Higgs boson discovery
in the Minimal Supersymmetric Standard Model is presented. First the latest
results of the Tevatron and LEP experiments on the light charged Higgs search
are reminded. In the rest of the report the perspectives of CMS for the light
charged Higgs search are presented with description of some details of the
analysis. The results are based on the full simulation and reconstruction of
the CMS detector including the systematic uncertainties on the background
determination. Finally the $\rm 5\sigma$ discovery contour for an integrated
luminosity of $\rm 30fb^{-1}$ is shown.


title:
Effect of charged partons on black hole production at the Large Hadron
  Collider

abstract:
  The cross section for black hole production in hadron colliders is calculated
using a factorization hypothesis in which the parton-level process is
integrated over the parton density functions of the protons. The mass, spin,
charge, colour, and finite size of the partons are usually ignored. We examine
the effects of parton electric charge on black hole production using the
trapped-surface approach of general relativity. Accounting for electric charge
of the partons could reduce the black hole cross section by one to four orders
of magnitude at the Large Hadron Collider. The cross section results are
sensitive to the Standard Model brane thickness. Lower limits on the amount of
energy trapped behind the event horizon in the collision of charged particles
are also calculated.


title:
Revealing the large extra dimension effective interaction at an e^+e^-
  collider with polarized beams

abstract:
  Contactlike nonstandard effective interactions can be revealed through
deviations of observables from the Standard Model predictions. If such
deviations were observed, the relevant source should be identified among the
possible models that could explain them. We estimate the expected
discrimination reach on the ADD model of gravity in large compactified extra
dimensions, against the compositeness-inspired four-fermion contact
interaction. As basic observables we take the differential cross sections for
fermion-pair production at a 0.5-1 TeV electron-positron linear collider with
both beams longitudinally polarized. For the four-fermion contact interaction,
we assume a general linear combination of the individual models with definite
chiralities, and arbitrary coupling constants. Accordingly, the estimated
identification reach on the ADD scenario can be considered as
`model-independent'. We emphasize the substantial role of beams polarization in
enhancing the identification sensitivity.


title: String compactification, QCD axion and axion-photon-photon coupling

abstract:
  It is pointed out that there exist a few problems to be overcome toward an
observable sub-eV QCD axion in superstring compactification. We give a general
expression for the axion decay constant. For a large domain wall number
$N_{DW}$, the axion decay constant can be substantially lowered from a generic
value of a scalar singlet VEV. The Yukawa coupling structure in the recent
$Z_{12-I}$ model is studied completely, including the needed nonrenormalizable
terms toward realistic quark and lepton masses. In this model we find an
approximate global symmetry and vacuum so that a QCD axion results but its
decay constant is at the GUT scale. The axion-photon-photon coupling is
calculated for a realistic vacuum satisfying the quark and lepton mass matrix
conditions. It is the first time calculation of $c_{a\gamma\gamma}$ in
realistic string compactifications: $c_{a\gamma\gamma}={5/3}-1.93\simeq -0.26$.


title: Glueball Production via Gluonic Penguin B Decays

abstract:
  We study glueball G production in gluonic penguin decay B -> X_s G, using
next-to-leading order b -> s g^* gluonic penguin interaction and an effective
coupling of a glueball to two gluons. The effective coupling allows us to study
the decay rate of a glueball to two pseudoscalars in the framework of chiral
perturbation theory. Identifying the f_0(1710) to be a scalar glueball, we then
determine the effective coupling strength with the branching ratio of f_0(1710)
-> K KBar. We find that the charm penguin to be important and obtain a sizable
branching ratio for Br(B -> X_s G) in the range of (0.7 - 1.7) \times 10^{-4}.
Rare hadronic B decay data from BaBar and Belle can provide important
information about glueballs.


title: Simulation of jet quenching at RHIC and LHC

abstract:
  The model to simulate jet quenching effect in ultrarelativistic heavy ion
collisions is presented. The model is the fast Monte-Carlo tool implemented to
modify a standard PYTHIA jet event. The model has been generalized to the case
of the "full" heavy ion event (the superposition of soft, hydro-type state and
hard multi-jets) using a simple and fast simulation procedure for soft particle
production. The model is capable of reproducing main features of the jet
quenching pattern at RHIC and is applyed to analyze novel jet quenching
features at LHC.


title:
Cherenkov effect in the weak interactions generated by the neutrinos and
  new approach for estimation of neutrino mass

abstract:
  It is shown that if weak interactions can generate masses and polarize
matter, then the Cherenkov effect induced by these interactions appears. The
resonance ($v_\nu < c/n$) and the Cherenkov ($v_\nu > c/n$) effects are
competitive processes and at definite neutrino energies the resonance effect
will change to the Cherenkov effect and we obtain an excellent possibility of
estimating neutrino masses.


title: On the dispersion theory of $\pi\pi$ scattering

abstract:
  Recent developments in low energy pion physics are reviewed, emphasizing the
strength of dispersion theory in this context. As an illustration of the
method, I discuss some consequences of the forward dispersion relation obeyed
by the isoscalar component of the scattering amplitude.


title: pi pi scattering

abstract:
  Recent work in low energy pion physics is reviewed. One of the exciting new
developments in this field is that simulations of QCD on a lattice now start
providing information about the low energy structure of the continuum theory,
for physical values of the quark masses. Although the various sources of
systematic error yet need to be explored more thoroughly, the results obtained
for the correlation function of the axial current with the quantum numbers of
the pion already have important implications for the effective Lagrangian of
QCD. The consequences for $\pi\pi$ scattering are discussed in some detail. The
second part of the report briefly reviews recent developments in the dispersion
theory of the scattering amplitude. One of the important results here is that
the position of the lowest resonances of QCD can now be determined in a model
independent manner and rather precisely. Beyond any doubt, the partial wave
with $I=\ell=0$ contains a pole on the second sheet, not far from the
threshold: the lowest resonance of QCD carries the quantum numbers of the
vacuum.


title:
Dimuon transverse momentum spectra as a tool to characterize the
  emission region in heavy-ion collisions

abstract:
  Previous dilepton measurements in heavy-ion collisions have mainly focused on
invariant mass spectra to clarify in-medium changes of vector meson properties.
However, a dimuon is characterized by two scales -- invariant mass $M$ and
transverse momentum $p_T$. Like transverse momentum spectra of hadrons, $p_T$
spectra of dileptons arise from an interplay between emission temperature and
collective transverse flow, whereas the invariant mass is insensitive to flow.
Having two control parameters of which only one is sensitive to flow allows at
given $M$ to characterize the emission region in terms of average temperature
and flow. Thus, one is able to study what phases of the fireball evolution
radiate into a given mass window. We demonstrate this technique using the
dimuon transverse momentum spectra measured by the NA60 collaboration and
present strong arguments that a thermalized evolution phase with $T > 170$ MeV
leaves an imprint in the spectra.


title:
Atmospheric Neutrino Mixing and b-s Transitions: Testing Lopsided SO(10)
  Flavor Structure in B physics

abstract:
  We point out that the correlation between the large atmospheric neutrino
mixing and the $b \to s$ transition, if exists, comes from the lopsided flavor
structure in SO(10) grand unification theory. We suggest testing the
correlation by studying the deviation of $S_{\phi K_S}$ and $S_{\eta' K_S}$
from the standard model predictions along with the constraints from $\Delta
M_{B_S}$ and $b\to s \gamma$ in a realistic SO(10) model with lopsided flavor
structure. We find a specific correlation between $S_{\phi K_S}$ and $S_{\eta'
K_S}$ that is intrinsic to the lopsided structure and discuss how to confirm or
rule out this flavor pattern by the more accurate measurements of these CP
violation quantities in B decay.


title:
Generalized Form Factors, Generalized Parton Distributions and Spin
  Contents of the Nucleon

abstract:
  A model independent prediction is given for the nucleon spin contents, based
only upon a reasonable theoretical postulate on the isosinglet anomalous
gravitomagnetic moment of the nucleon.


title: Search for new physics from $B\to\pi \phi$

abstract:
  We investigate the pure penguin process $B^-\to \pi^-\phi$ using QCD
factorization approach to calculate hadronic matrix elements to the $\alpha_s$
order in some well-known NP models. It is shown that the NP contributions in
R-parity conserved SUSY models and 2HDMs are not enough to saturate the
experimental upper bounds for $B\to \phi \pi$. We have shown that the flavor
changing $Z^\prime$ models can make the branching ratios of $B\to \phi \pi$ to
saturate the bound under all relevant experimental constraints.


title:
Master Formula for Twist-3 Soft-Gluon-Pole Mechanism to Single
  Transverse-Spin Asymmetry

abstract:
  Perturbative QCD relates the single transverse-spin asymmetries (SSAs) for
hard processes at large transverse-momentum of produced particle to partonic
matrix elements that describe interference between scattering from a coherent
quark-gluon pair and from a single quark, generated through twist-3 quark-gluon
correlations inside a hadron. When the coherent gluon is soft at the gluonic
poles, its coupling to partonic subprocess can be systematically disentangled,
so that the relevant interfering amplitude can be derived entirely from the
Born diagrams for the scattering from a single quark. We establish a new
formula that represents the exact rules to derive the SSA due to soft-gluon
poles from the knowledge of the twist-2 cross section formula for unpolarized
processes. This single master formula is applicable to a range of processes
like Drell-Yan and direct-photon production, and semi-inclusive deep inelastic
scattering, and is also useful to manifest the gauge invariance of the results.


title: The neutron 'thunder' accompanying large extensive air showers

abstract:
  The bulk of neutrons which appear with long delays in neutron monitors nearby
the EAS core (~'neutron thunder'~) are produced by high energy EAS hadrons
hitting the monitors. This conclusion raises an important problem of the
interaction of EAS with the ground, the stuff of the detectors and their
environment. Such interaction can give an additional contribution to the signal
in the EAS detectors at {\em km}-long distances from the large EAS core after a
few $\mu s$ behind the EAS front.


title:
Next-to-leading order QCD corrections to slepton pair production via
  vector-boson fusion

abstract:
  Slepton pairs can be produced in vector-boson fusion processes at hadron
colliders. The next-to-leading order QCD corrections to the electroweak
production cross section for p p -> slepton+ slepton- +2jets at order alpha_s
alpha^4 have been calculated and implemented in a NLO parton-level Monte Carlo
program. Numerical results are presented for the CERN Large Hadron Collider.


title: Perspectives of detecting CKM-suppressed top quark decays at ILC

abstract:
  Top quark decays are of particular interest as a mean to test the standard
model (SM) predictions, both for the dominant ($t\to b+W$) and rare decays
($t\to q+W, cV, cVV,c\phi^0,bWZ$). As the latter are highly suppressed, they
become an excellent window to probe the predictions of theories beyond the SM.
In particular, in this paper, we evaluate the corrections from new physics to
the CKM-suppressed SM top quark decay $t\to q+W$ ($q=d,s$), both within the
effective lagrangian approach and the MSSM and we discuss the perspectives to
probe those predictions at the ILC.


title: Heavy meson semileptonic decays in two dimensions in the large Nc

abstract:
  We study QCD in 1+1 dimensions in the large Nc limit using light-front
Hamiltonian perturbation theory in the 1/Nc expansion. We use this formalism to
exactly compute hadronic transition matrix elements for arbitrary currents at
leading order in 1/Nc, which we use to write the semileptonic differential
decay rate of a heavy meson and its moments. We then compare with the results
obtained using an effective field theory approach based on perturbative
factorization, with the intention of better understanding quark-hadron duality.
A very good numerical agreement is obtained between the exact result and the
result using effective theories.


title: Two-Loop Renormalization in the Standard Model Part I: Prolegomena

abstract:
  In this paper the building blocks for the two-loop renormalization of the
Standard Model are introduced with a comprehensive discussion of the special
vertices induced in the Lagrangian by a particular diagonalization of the
neutral sector and by two alternative treatments of the Higgs tadpoles. Dyson
resummed propagators for the gauge bosons are derived, and two-loop
Ward-Slavnov-Taylor identities are discussed. In part II, the complete set of
counterterms needed for the two-loop renormalization will be derived. In part
III, a renormalization scheme will be introduced, connecting the renormalized
quantities to an input parameter set of (pseudo-)experimental data, critically
discussing renormalization of a gauge theory with unstable particles.


title:
Two-Loop Renormalization in the Standard Model Part II: Renormalization
  Procedures and Computational Techniques

abstract:
  In part I general aspects of the renormalization of a spontaneously broken
gauge theory have been introduced. Here, in part II, two-loop renormalization
is introduced and discussed within the context of the minimal Standard Model.
Therefore, this paper deals with the transition between bare parameters and
fields to renormalized ones. The full list of one- and two-loop counterterms is
shown and it is proven that, by a suitable extension of the formalism already
introduced at the one-loop level, two-point functions suffice in renormalizing
the model. The problem of overlapping ultraviolet divergencies is analyzed and
it is shown that all counterterms are local and of polynomial nature. The
original program of 't Hooft and Veltman is at work. Finite parts are written
in a way that allows for a fast and reliable numerical integration with all
collinear logarithms extracted analytically. Finite renormalization, the
transition between renormalized parameters and physical (pseudo-)observables,
will be discussed in part III where numerical results, e.g. for the complex
poles of the unstable gauge bosons, will be shown. An attempt will be made to
define the running of the electromagnetic coupling constant at the two-loop
level.


title:
Two-Loop Renormalization in the Standard Model Part III: Renormalization
  Equations and their Solutions

abstract:
  In part I and II of this series of papers all elements have been introduced
to extend, to two loops, the set of renormalization procedures which are needed
in describing the properties of a spontaneously broken gauge theory. In this
paper, the final step is undertaken and finite renormalization is discussed.
Two-loop renormalization equations are introduced and their solutions discussed
within the context of the minimal standard model of fundamental interactions.
These equations relate renormalized Lagrangian parameters (couplings and
masses) to some input parameter set containing physical (pseudo-)observables.
Complex poles for unstable gauge and Higgs bosons are used and a consistent
setup is constructed for extending the predictivity of the theory from the Lep1
Z-boson scale (or the Lep2 WW scale) to regions of interest for LHC and ILC
physics.


title: On the Role of FSI in K -> 2\pi Decay

abstract:
  Contrary to wide-spread opinion that the final state interaction (FSI)
enlarges the amplitude $<2\pi;I=0|K^0>$, we argue that FSI is not able to
increase the absolute value of this amplitude.


title: Aspects of Axion Phenomenology in a slice of AdS_5

abstract:
  Motivated by multi-throat considerations, we study the phenomenological
implications of a bulk axion in a slice of AdS_5 with a large extra dimension:
k~0.01 eV, kR > 1. In particular, we compare axion physics with a warped
geometry to axions in flat compactifications. As in flat compactification
scenarios, we find that the mass of the axion can become independent from the
underlying Peccei-Quinn scale. Surprisingly, we find that in warped extra
dimensions the axion's invisibility, cosmological viability, and basic
phenomenology remain essentially unaltered in comparison to axions in flat
compactifications.


title: Photon Regeneration Plans

abstract:
  Precision experiments exploiting low-energy photons may yield information on
particle physics complementary to experiments at high-energy colliders, in
particular on new very light and very weakly interacting particles, predicted
in many extensions of the standard model. Such particles may be produced by
laser photons send along a transverse magnetic field. The laser polarization
experiment PVLAS may have seen the first indirect signal of such particles by
observing an anomalously large rotation of the polarization plane of photons
after the passage through a magnetic field. This can be interpreted as evidence
for photon disappearance due to particle production. There are a number of
experimental proposals to test independently the particle interpretation of
PVLAS. Many of them are based on the search for photon reappearance or
regeneration, i.e. for ``light shining through a wall''. At DESY, the
Axion-Like Particle Search (ALPS) collaboration is currently setting up such an
experiment.


title:
Folding Froggatt-Nielsen into the Stueckelberg-Higgs mechanism in
  anomalous U(1) models

abstract:
  We describe a simple connection between the Froggatt-Nielsen, Stueckelberg
and Higgs mechanisms, all three of them combined in a consistent way. This is
illustrated in the context of a class of generalizations of the Standard Model
with a gauge structure extended by a certain number of anomalous U(1) factors.
These are built in the effective action in a way that gauge invariance and
unitarity are preserved.
  Among other features, a physical axion with properties different from those
of a Peccei-Quinn axion emerges.


title:
Electromagnetic corrections to final state interactions in $K\to 3\pi $
  decays

abstract:
  The final state interactions of pions in decays $K^\pm\to\pi^\pm\pi^0\pi^0$
are considered using the methods of quantum mechanics. We show how to
incorporate the electromagnetic effects in the amplitudes of these decays and
to work out the relevant expressions valid above and below the two charged
pions production threshold $M_c=2m$. The electromagnetic corrections are given
as evaluated in a potential model.


title:
Method for comparing finite temperature field theory results with
  lattice data

abstract:
  The values of the presently available truncated perturbative expressions for
the pressure of the quark-gluon plasma at finite temperatures and finite
chemical potential are trustworthy only at very large energies. When used down
to temperatures close to the critical one Tc, they suffer from large
uncertainties due to the renormalization scale freedom. In order to reduce
these uncertainties, we perform resummations of the pressure by applying
Pade-related approximants to the available perturbation series for the
short-distance and for the long-distance contributions. In the two
contributions, we use two different renormalization scales which reflect
different energy regions contributing to the different parts. Application of
the obtained expressions at low temperatures is made possible by replacing the
usual four-loop barMS beta function for alpha_s by its Borel-Pade resummation,
eliminating thus the unphysical Landau singularities of alpha_s. The obtained
results are remarkably insensitive to the chosen renormalization scale and can
be compared with lattice results -- for the pressure (p), the chemical
potential contribution (delta p) to the pressure, and various susceptibilities.
A good qualitative agreement with the lattice results is revealed down to
temperatures close to Tc.


title:
The Higgs effective potential in the Littlest Higgs model at the
  one-loop level

abstract:
  In this work we compute the contributions to the Higgs effective potential
coming from the fermion and gauge boson sectors at the one-loop level in the
context of the SU(5)/SO(5) Littlest Higgs (LH) model using a cutoff Lambda and
including all finite parts. We consider both, the (SU(2)xU(1))_{1} x
(SU(2)xU(1))_{2} and the (SU(2)xU(1))_{1} x (SU(2)xU(1)) gauge group versions
of the LH model. We also show that the Goldstone bosons present in the model do
not contribute to the effective potential at the one-loop level. Finally, by
neglecting the contribution of higher dimensional operators, we discuss the
restrictions that the new one-loop contributions set on the parameter space of
the LH model and the need to include higher loop corrections to the Higgs
potential.


title: A renormalizable SO(10) GUT scenario with spontaneous CP violation

abstract:
  We consider fermion masses and mixings in a renormalizable SUSY SO(10) GUT
with Yukawa couplings of scalar fields in the representation 10 + 120 + 126
bar. We investigate a scenario defined by the following assumptions: i) A
single large scale in the theory, the GUT scale. ii) Small neutrino masses
generated by the type I seesaw mechanism with negligible type II contributions.
iii) A suitable form of spontaneous CP breaking which induces hermitian mass
matrices for all fermion mass terms of the Dirac type. Our assumptions define
an 18-parameter scenario for the fermion mass matrices for 18 experimentally
known observables. Performing a numerical analysis, we find excellent fits to
all observables in the case of both the normal and inverted neutrino mass
spectrum.


title: The upper bound on the lightest Higgs mass in the NMSSM revisited

abstract:
  We update the upper bound on the lightest CP even Higgs mass in the NMSSM,
which is given as a function of tan(beta) and lambda. We include the available
one and two loop corrections to the NMSSM Higgs masses, and constraints from
the absence of Landau singularities below the GUT scale as well as from the
stability of the NMSSM Higgs potential. For m_top varying between 171.4 and 178
GeV, squark masses of 1 TeV and maximal mixing the upper bound is assumed near
tan(beta) ~ 2 and varies between 139.9 and 141.4 GeV.


title:
NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM
  with GUT scale boundary conditions

abstract:
  NMSPEC is a Fortran code that computes the sparticle and Higgs masses, as
well as Higgs decay widths and couplings in the NMSSM, with soft SUSY breaking
terms specified at MGUT. Exceptions are the soft singlet mass m_s^2 and the
singlet self coupling kappa, that are both determined in terms of the other
parameters through the minimization equations of the Higgs potential. We
present a first analysis of the NMSSM parameter space with universal SUSY
breaking terms at MGUT -- except for m_s and A_kappa -- that passes present
experimental constraints on sparticle and Higgs masses. We discuss in some
detail a region in parameter space where a SM-like Higgs boson decays
dominantly into two CP odd singlet-like Higgs states.


title:
Formation of Gapless Phases of $K^0$ Condensed Color-Flavor Locked
  Superconducting Quark Matter

abstract:
  Electric and color neutral solutions, and the critical conditions for the
formation of gapless color superconductors, are investigated in $K^0$ condensed
color-flavor locked quark matter for nonzero strange quark mass. We show that
as the strange quark mass increases, gapless modes for up-strange quark pairing
occur first, followed by down-strange quark pairing. The behavior of the gaps,
the dispersion relations, and the thermodynamic potential are all found as
functions of the strange quark mass on the basis of a Nambu Jona-Lasinio type
model. To a high degree of accuracy, they are presented as relatively simple
elementary functions. This allows for easy computation for any reasonable range
of baryon chemical potential and strange quark mass.


title: Second Order Corrections to QED Coupling at Low Temperature

abstract:
  We calculate the second order corrections to vacuum polarization tensor of
photons at low temperatures, i.e; T $\le 10^{10}$ K ($T << m_e$). The thermal
contributions to the QED coupling constant are evaluated at temperatures below
the electron mass that is $T< m_e$ . Renormalization of QED at these
temperatures has explicitly been checked. The electromagnetic properties of
such a thermal medium are modified. Parameters like electric permittivity and
magnetic permeability of such a medium are no more constant and become
functions of temperature.


title:
Distinguishing Supersymmetry From Universal Extra Dimensions or Little
  Higgs Models With Dark Matter Experiments

abstract:
  There are compelling reasons to think that new physics will appear at or
below the TeV-scale. It is not known what form this new physics will take,
however. Although The Large Hadron collider is very likely to discover new
particles associated with the TeV-scale, it may be difficult for it to
determine the nature of those particles, whether superpartners, Kaluza-Klein
modes or other states. In this article, we consider how direct and indirect
dark matter detection experiments may provide information complementary to
hadron colliders, which can be used to discriminate between supersymmetry,
models with universal extra dimensions, and Little Higgs theories. We find
that, in many scenarios, dark matter experiments can be effectively used to
distinguish between these possibilities.