title: Dark Matter In Minimal Trinification

abstract:
  We study an example of Grand Unified Theory (GUT), known as trinification,
which was first introduced in 1984 by S.Glashow. This model has the GUT gauge
group as $[SU(3)]^3$ with a discrete $\mathbb{Z}_3$ to ensure the couplings are
unified at the GUT scale. In this letter we consider this trinification model
in its minimal formulation and investigate its robustness in the context of
cosmology. In particular we show that for a large set of the parameter space
the model doesn't seem to provide a Dark Matter candidate compatible with
cosmological data.


title: Ionic Binding in a Susy Background

abstract:
  From string theory and the observation of a positive vacuum energy in our
universe it seems inevitable that there will eventually be a phase transition
to an exactly supersymmetric (susy) universe. In this phase there will be an
effective weakening of the Pauli principle due to fermi-bose degeneracy. As a
consequence molecular binding will be significantly affected. We make some
general comments on susy molecules and perform a variational principle estimate
of ionic binding energies.


title: Minimal Extension of the Standard Model Scalar Sector

abstract:
  The minimal extension of the scalar sector of the standard model contains an
additional real scalar field with no gauge quantum numbers. Such a field does
not couple to the quarks and leptons directly but rather through its mixing
with the standard model Higgs field. We examine the phenomenology of this model
focusing on the region of parameter space where the new scalar particle is
significantly lighter than the usual Higgs scalar and has small mixing with it.
In this region of parameter space most of the properties of the additional
scalar particle are independent of the details of the scalar potential.
Furthermore the properties of the scalar that is mostly the standard model
Higgs can be drastically modified since its dominant branching ratio may be to
a pair of the new lighter scalars.


title: Phenomenology of The Left-Right Twin Higgs Model

abstract:
  The twin Higgs mechanism has recently been proposed to solve the little
hierarchy problem. We study the implementation of the twin Higgs mechanism in
left-right models. At TeV scale, heavy quark and gauge bosons appear, with rich
collider phenomenology. In addition, there are extra Higgses, some of which
couple to both the Standard Model fermion sector and the gauge sector, while
others couple to the gauge bosons only. We present the particle spectrum, and
study the general features of the collider phenomenology of this class of model
at the Large Hadron Collider.


title: Long Lived Charged Massive Particles and Big Bang Nucleosynthesis

abstract:
  We consider Big Bang Nucleosynthesis(BBN) with long lived charged massive
particles. Before decaying, the long lived massive particles recombines with a
light element to form a bound state like a hydrogen atom. We discuss the
possible change of primordial light element abundances due to formations of
such bound states.


title: Mass Independent Textures and Symmetry

abstract:
  A mass-independent texture is a set of linear relations of the fermion
mass-matrix elements which imposes no constraint on the fermionic masses nor
the Majorana phases. Magic and 2-3 symmetries are examples. We discuss the
general construction and the properties of these textures, as well as their
relation to the quark and neutrino mixing matrices. Such a texture may be
regarded as a symmetry, whose unitary generators of the symmetry group can be
explicitly constructed. In particular, the symmetries connected with the
tri-bimaximal neutrino mixing matrix are discussed, together with the physical
consequence of breaking one symmetry but preserving another.


title: Extracting Flavor from Quiver Gauge Theories

abstract:
  We consider a large class of models where an SU(5) gauge symmetry and a
Froggatt-Nielsen (FN) Abelian flavor symmetry arise from a quiver gauge theory.
Such quiver models are very restrictive and therefore have strong predictive
power. In particular, under mild assumptions neutrino mass anarchy is
predicted.


title: Baryon magnetic moments in colored quark cluster model

abstract:
  Using the colored quark cluster model, we study magnetic moments of the octet
baryons. We give the values of the magnetic moments of baryons $p$, $n$,
$\Sigma^+$, $\Sigma^-$, $\Xi^0$, and $\Xi^-$. The results also show that the
orbital motion has very significant effects on the spin and magnetic moments of
those baryons and the strange component in the proton is very small.


title: Stringy origin of non-Abelian discrete flavor symmetries

abstract:
  We study the origin of non-Abelian discrete flavor symmetries in superstring
theory. We classify all possible non-Abelian discrete flavor symmetries which
can appear in heterotic orbifold models. These symmetries include D_4 and
Delta(54). We find that the symmetries of the couplings are always larger than
the symmetries of the compact space. This is because they are a consequence of
the geometry of the orbifold combined with the space group selection rules of
the string. We also study possible breaking patterns. Our analysis yields a
simple geometric understanding of the realization of non-Abelian flavor
symmetries.


title: The study of leading twist light cone wave function of \eta_c meson

abstract:
  This paper is devoted to the study of leading twist light cone wave function
of $\eta_c$ meson. The moments of this wave function have been calculated
within three approaches: potential models, nonrelativistic QCD and QCD sum
rules. Using the results obtained within these approaches the model for the
light cone wave function of leading twist has been proposed. Being scale
dependent light cone wave function has very interesting properties at scales
$\mu> m_c$: improvement of the accuracy of the model, appearance of
relativistic tail and violation of nonrelativistic QCD velocity scaling rules.
The last two properties are the properties of real leading twist light cone
wave function of $\eta_c$ meson.


title: Neutrino and Multidimensional Theories of Fundamental Interactions

abstract:
  In this thesis, the possibility of interpreting the solar and atmospheric
neutrino data within the context of theoretical models is being explored. In
particular, the implications of the Minimal Supersymmetric Standard Model
augmented by a single U(1) anomalous family symmetry for neutrino masses and
mixing angles are investigated. Motivated by the above results, the effect of
introducing a proper second singlet pair is studied resulting to additional
mass entries in the previous model. Also, renormalization effects on neutrino
masses and mixing angles in a supersymmetric string-inspired
SU(4)xSU(2)_LxSU(2)_RxU(1)_X model are discussed. Lastly, D-brane inspired
models are studied with U(3)xU(2)xU(1)^N gauge symmetry in the context of split
supersymmetry.


title: The Olsson sum rule and the rho Regge pole

abstract:
  We consider the Olsson sum rule, i.e., the forward dispersion relation for
pion-pion scattering with exchange of isospin unity at threshold. We show that,
if using the S0, S2 and P wave expressions of Colangelo, Gasser and Leutwyler,
then either the sum rule is not satisfied or, if adjusting the residue of the
rho exchange Regge amplitude to have the sum rule satisfied (as recently
proposed by Caprini, Colangelo and Leutwyler) then the subsequent high energy
amplitude is in disagreement with experimental pi-pi cross sections.


title:
Some model-independent phenomenological consequences of flexible brane
  worlds

abstract:
  In this work we will review the main properties of brane-world models with
low tension. Starting from very general principles, it is possible to obtain an
effective action for the relevant degrees of freedom at low energies (branons).
Using the cross sections for high-energy processes involving branons, we set
bounds on the different parameters appearing in these models. We also show that
branons provide a WIMP candidate for dark matter in a natural way. We consider
cosmological constraints on its thermal and non-thermal relic abundances. We
derive direct detection limits and compare those limits with the preferred
parameter region in the case in which the EGRET excess in the diffuse galactic
gamma rays is due to dark matter annihilation. Finally we will discuss the
constraints coming from the precision tests of the Standard Model and the muon
anomalous magnetic moment.


title: Introduction to the Terascale

abstract:
  We briefly review the status of the electroweak theory, in the Standard Model
and beyond, on the brink of the LHC start.


title: Axial anomaly: the modern status

abstract:
  The modern status of the problem of axial anomaly in QED and QCD is reviewed.
Two methods of the derivation of the axial anomaly are presented: 1) by
splitting of coordinates in the expression for the axial current and 2) by
calculation of triangle diagrams, where the anomaly arises from the surface
terms in momentum space. It is demonstrated, that the equivalent formulation of
the anomaly can be given, as a sum rule for the structure function in
dispersion representation of three point function of AVV interaction. It is
argued, that such integral representation of the anomaly has some advantages in
the case of description of the anomaly by contribution of hadronic states in
QCD. The validity of the t'Hooft consistency condition is discussed. Few
examples of the physical application of the axial anomaly are given.


title:
Constraints on Gravitino Dark Matter Scenarios with Long-Lived Charged
  Sleptons

abstract:
  Considering scenarios in which the gravitino is the lightest supersymmetric
particle and a charged slepton the next-to-lightest supersymmetric particle
(NLSP), we discuss cosmological constraints on the masses of the gravitino and
the NLSP slepton. The presented mass bounds are crucial for gravitino dark
matter studies and potential gravitino signatures at future colliders.


title:
Analysis of Rotation Curves in the Framework of the Gravitational
  Suppression Model

abstract:
  We present an analysis of suitable rotation curves (RCs) of eight galaxies,
aimed at checking the consistency and universality of the gravitational
suppression (GraS) hypothesis, a phenomenological model for a new interaction
between dark matter and baryons. Motivated by the puzzle of the core versus
cusp distribution of dark matter in the center of halos, this hypothesis claims
to reconcile the predictions from N-body \Lambda cold dark matter simulations
with kinematic observations. The GraS model improves the kinematic fitting
residuals, but the mass parameters are unphysical and put the theory in
difficulty.


title:
Confronting fragmentation function universality with single hadron
  inclusive production at HERA and $e^+ e^-$ colliders

abstract:
  Predictions for light charged hadron production data in the current
fragmentation region of deeply inelastic scattering from the H1 and ZEUS
experiments are calculated using perturbative Quantum Chromodynamics at
next-to-leading order, and using fragmentation functions obtained by fitting to
similar data from $e^+ e^-$ reactions. General good agreement is found when the
magnitude $Q^2$ of the hard photon's virtuality is sufficiently large. The
discrepancy at low $Q$ and small scaled momentum $x_p$ is reduced by
incorporating mass effects of the detected hadron. By performing quark tagging,
the contributions to the overall fragmentation from the various quark flavours
in the $ep$ reactions are studied and compared to the contributions in $e^+
e^-$ reactions. The yields of the various hadron species are also calculated.


title: On Symmetric Lepton Mixing Matrices

abstract:
  Contrary to the quark mixing matrix, the lepton mixing matrix could be
symmetric. We study the phenomenological consequences of this possibility. In
particular, we find that symmetry would imply that |U_{e3}| is larger than
0.16, i.e., above its current 2 sigma limit. The other mixing angles are also
constrained and CP violating effects in neutrino oscillations are suppressed,
even though |U_{e3}| is sizable. Maximal atmospheric mixing is only allowed if
the other observables are outside their current 3 sigma ranges, and sin^2
theta_{23} lies typically below 0.5. The Majorana phases are not affected, but
the implied values of the solar neutrino mixing angle have some effect on the
predictions for neutrinoless double beta decay. We further discuss some formal
properties of a symmetric mixing matrix.


title: The Isgur-Wise function in the BPS limit

abstract:
  From sum rules in the heavy quark limit of QCD, using the non-forward
amplitude, we demonstrate that if the slope rho^2 = -xsi'(1) of the Isgur-Wise
function xsi(w) attains its lower bound 3/4 (as happens in the BPS limit
proposed by Uraltsev), the IW function is completely determined, given by the
function xsi(w) = [2/(w+1)]^(3/2).


title: Status report (2006) of the ANTARES project

abstract:
  The detection of very high energy neutrinos of galactic/extragalactic origin
requires very large detectors and a large overburden as a shield against the
background of cosmic ray muons. ANTARES is at present the largest (effective
area ~0.05 km2) experiment currently under construction in the northern
hemisphere. It is being built and installed at a depth of 2500m in the
Mediterranean sea, near the Southern French coast, by a large European
collaboration. A three-dimensional array of photomultipliers are used to detect
the Cherenkov light emitted by neutrino-induced muons. The array, when
completed, will consists of 12 lines each covering a vertical length of about
480 m and equipped with 75 photomultipliers arranged in triplets. The readout
electronics is connected to an on-shore laboratory through a 42 km long
electro-optical cable. The final detector design has been completed. An
instrumented line (called MILOM) has been installed in the spring of 2005; the
first string (Line 1) is in acquisition starting from February 2006, and the
second (Line 2) from September 2006. The physics motivations of the experiment,
the details of the construction and installation, together with preliminary
results obtained using the MILOM and Line 1 are presented.


title:
Towards a Realistic MSSM Prediction for Neutrino-nucleon Deep-inelastic
  Scattering

abstract:
  We discuss the radiative corrections to charged and neutral current
deep-inelastic neutrino--nucleon scattering in the minimal supersymmetric
standard model (MSSM). In particular, we study deviations, delta_R^nu(nu-bar),
from the Standard Model prediction for the ratios of neutral- to
charged-current cross sections, taking into account all sources for deviations
in the MSSM, i.e. different contributions from virtual Higgs bosons and virtual
superpartners. Our calculation includes the full q^2 dependence of the one-loop
amplitudes, parton distribution functions and a NuTeV-inspired process
kinematics. We present results of a scan of delta_R^nu(nu-bar) over the
relevant MSSM parameter space.


title:
Multiplicity, Transverse Momentum, Forward-Backward Long Range
  Correlations and Percolation of strings

abstract:
  The fluctuations due to the clustering of color sources can explain the
behaviour of the scaled multiplicity variance and transverse momentum
fluctuations with centrality. They also predict a nonmonotonic behaviour with
centrality for the multiplictiy associated to high pT events. The clustering of
color sources gives rise to an increase in the long-range correaltions with
centrality as well as to a supression at high centrality with respect to
superposition model predictions.


title: pi N --> Multi-pi N Scattering in the 1/N_c Expansion

abstract:
  We extend the 1/N_c expansion meson-baryon scattering formalism to cases in
which the final state contains more than two particles. We first show that the
leading-order large N_c processes proceed through resonant intermediate states
(e.g., rho N or pi Delta). We then tabulate linear amplitude expressions for
relevant processes and find that the pole structure of baryon resonances can be
uniquely identified by their (non)appearance in eta N or mixed partial-wave pi
Delta final states. We also show that quantitative predictions of pi N to pi
Delta branching ratios predicted at leading order alone do not agree with
measurements, but the inclusion of 1/N_c corrections is ample to explain the
discrepancies.


title: New physics from ultrahigh energy cosmic rays

abstract:
  Cosmic rays from outer space enter the atmosphere with energies of up to
10^{11} GeV. The initial particle or a secondary hadron inside the shower may
then interact with an air nucleon to produce nonstandard particles. In this
article we study the production of new physics by high energy cosmic rays,
focusing on the long-lived gluino of split-SUSY models and a WIMP working as
dark matter. We first deduce the total flux of hadron events at any depth in
the atmosphere, showing that secondary hadrons can not be neglected. Then we
use these results to find the flux of gluinos and WIMPs that reach the ground
after being produced inside air showers. We also evaluate the probability of
producing these exotic particles in a single proton shower of ultrahigh energy.
Finally we discuss the possible signal in current and projected experiments.
While the tiny flux of WIMPs does not seem to have any phenomenological
consequences, we show that the gluinos could modify substantially the profile
of a small fraction of extensive air showers. In particular, they could produce
a distinct signal observable at AUGER in showers of large zenith angle.


title:
Landau-Zener problem in a three-level neutrino system with non-linear
  time dependence

abstract:
  We consider the level-crossing problem in a three-level system with
non-linearly time-varying Hamiltonian (time-dependence $t^{-3}$). We study the
validity of the so-called independent crossing approximation in the
Landau-Zener model by making comparison with results obtained numerically in
density matrix approach. We also demonstrate the failure of the so-called
"nearest zero" approximation of the Landau-Zener level-crossing probability
integral.


title:
Constraints on flavor-dependent long range forces from neutrino
  experiments

abstract:
  We study the impact of flavor-dependent long range leptonic forces mediated
by the $L_e-L_\mu$ or $L_e -L_\tau$ gauge bosons on the solar neutrino
oscillations, when the interaction range $R_{LR}$ is much larger than the
Earth-Sun distance. The solar and atmospheric neutrino mass scales do not get
trivially decoupled in this situation even if $\theta_{13}$ is vanishingly
small. In addition, for $\alpha \gsim 10^{-52}$ and normal hierarchy, resonant
enhancement of $\theta_{13}$ may give rise to strong energy dependent effects
on the $\nu_e$ survival probability. A complete three generation analysis of
the solar neutrino and KamLAND data gives the $3\sigma$ limits $\alpha_{e\mu} <
3.4 \times 10^{-53}$ and $\alpha_{e\tau} < 2.5 \times 10^{-53}$ when $R_{LR}$
is much smaller than our distance from the galactic center. With larger
$R_{LR}$, the collective LR potential due to all the electrons in the galaxy
becomes significant and the constraints on $\alpha$ become stronger by upto two
orders of magnitude.


title:
Electromagnetic form factors of charged and neutral kaons in an extended
  vector-meson-dominance model

abstract:
  A model is developed for electromagnetic form factors of the charged and
neutral K-mesons. The formalism is based on ChPT Lagrangians with vector
mesons. The form factors, calculated without fitting parameters, are in a good
agreement with experiment for space-like and time-like photon momenta.
Contribution of the two-kaon channels to the muon anomalous magnetic moment
a_\mu is calculated.


title: Stable Massive Particles at Colliders

abstract:
  We review the theoretical motivations and experimental status of searches for
stable massive particles (SMPs) which could be sufficiently long-lived as to be
directly detected at collider experiments. The discovery of such particles
would address a number of important questions in modern physics including the
origin and composition of dark matter in the universe and the unification of
the fundamental forces. This review describes the techniques used in
SMP-searches at collider experiments and the limits so far obtained on the
production of SMPs which possess various colour, electric and magnetic charge
quantum numbers. We also describe theoretical scenarios which predict SMPs and
the phenomenology needed to model their production at colliders and
interactions with matter. In addition, the interplay between collider searches
and open questions in cosmology is addressed.


title: Spontaneous Symmetry Breaking through Mixing

abstract:
  We discuss a model, in which the negative mass square needed in the Higgs
mechanism is generated by mixing with a heavy scalar. We have two scalar
doublets in the standard model. Phenomenological properties of the heavy new
scalar are discussed. The heavy scalar can be detected by the LHC.


title: Ultra-peripheral collisions of heavy ions at RHIC and the LHC

abstract:
  This paper deals with so-called Ultra-Peripheral Collisions (UPCs) of heavy
ions. These can be defined as collisions in which no hadronic interactions
occur because of the large spatial separation between the projectile and
target. The interactions are instead mediated by the electromagnetic field. Two
types of ultra-peripheral collisions can be distinguished: purely
electro-magnetic interactions (two-photon interactions) and photonuclear
interactions, in which a photon from the projectile interacts with the hadronic
component of the target.


title: Bose-Einstein Condensation of Pions in High Multiplicity Events

abstract:
  We present microcanonical ensemble calculations of particle number
fluctuations in the ideal pion gas approaching Bose-Einstein condensation. In
the samples of events with a fixed number of all pions, $N_{\pi}$, one may
observe a prominent signal. When $N_{\pi}$ increases the scaled variances for
particle number fluctuations of both neutral and charged pions increase
dramatically in the vicinity of the Bose-Einstein condensation line. As an
example, the estimates are presented for $p+p$ collisions at the beam energy of
70 GeV.


title:
Hadronic distributions and correlations at "small x" in Quantum
  Chromodynamics

abstract:
  We exactely calculate the inclusive transverse momentum (kt) distributions
and the 2-particle momentum correlations in high energy hadronic jets at the
Modified Leading Logarithmic Approximation (MLLA) of QCD (Quantum
Chromodynamics). We first obtain the exact solution of the evolution equations
at "small x", which we calculate at the so called "limiting spectrum". We then
go beyond this approximation by performing the steepest descent evaluation,
which allows to generalize the preceeding results. Our predictions are in good
agreement with the data (LEP, Tevatron) and improve those which have been
obtained in the past. The comparison with forthcoming data (Tevatron, LHC) will
further test the hypothesis of Local Hadron Parton Duality, and the eventual
need to incorporate NMLLA corrections.


title: The three flavor LOFF phase of QCD

abstract:
  We explore the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase of QCD with
three flavors, using a Ginzburg-Landau expansion of the free energy, and a NJL
point-like four-fermion interaction, with the quantum numbers of single-gluon
exchange.


title:
Generalized Parton Distributions from Hadronic Observables: Zero
  Skewness

abstract:
  We propose a physically motivated parametrization for the unpolarized
generalized parton distributions. At zero value of the skewness variable,
$\zeta$, the parametrization is constrained by simultaneously fitting the
experimental data on both the nucleon elastic form factors and the deep
inelastic structure functions. A rich phenomenology can be addressed based on
this parametrization. In particular, we track the behavior of the average: {\it
i)} interparton distances as a function of the momentum fraction, $X$, {\it
ii)} $X$ as a function of the four-momentum transfer, $t$; and {\it iii)} the
intrinsic transverse momentum $k_\perp$ as a function of $X$. We discuss the
extension of our parametrization to $\zeta \neq 0$ where additional constraints
are provided by higher moments of the generalized parton distributions obtained
from {\it ab initio} lattice QCD calculations.


title:
Massive c-quark contributions to semileptonic b-quark decay near
  threshold

abstract:
  The decay width of b to c,c,c,l,nu has been computed as an expansion in limit
(1- 3*(m_c/m_b)) << 1 with zero lepton invariant mass. Considering O(alpha_s^2)
corrections to b to c,l,nu with zero invariant lepton mass, inclusion of our
result is shown to rectify the disagreement between the expansions around
(1-(m_c/m_b)) << 1 and m_c/m_b << 1 at smaller values.


title: Analytic Perturbation Theory Model for QCD and Upsilon Decay

abstract:
  An elegant and more precise formula for the 3-loop perturbative QCD coupling
is discussed. It improves the common expression (e.g., canonized by PDG) in few
GeV region. On its base, we propose simple analytic Model for ghost-free QCD
running couplings and their effective powers within the Analytic Perturbation
Theory, in both the space-like (Euclidean) and time-like (Minkowskian) regions,
very accurate in the range above 1 GeV. Effectiveness of the new Model is
illustrated by the example of Upsilon(1S) decay where the standard analysis
gives $\alpha_s(M_{\Ups})=0.170\pm 0.004$ value that is inconsistent with the
bulk of data. Instead, we obtain $\alpha_s(M_{\Ups})=0.185\pm 0.005$ that
corresponds to $\alpha_s(M_Z)=0.120\pm 0.002 $ that is close to the world
average.


title: Spin dependent masses and Sim(2) symmetry

abstract:
  Recently, Cohen and Glashow pointed out that all known experimental tests of
relativistic kinematics are consistent with invariance of physics under the
four-parameter subgroup Sim(2) of the Lorentz group. The massive one-particle
irreducible representations of ISim(2), that is Sim(2) times spacetime
translations, are all one-dimensional, labeled by spin along a preferred axis.
Consequently particle theories based on this symmetry can accomodate lepton
number conserving masses for left-handed neutrinos without the need to
introduce sterile states. The same property of massive particle
representations, however, also leads to the possibility that particle masses
may be split within the diffferent spins of a representation of the ordinary
Poincare group. In this article we investigate the low-energy structure of
theories with spin dependent masses and comment on the bounds on such effects.


title: New large-$N_c$ relations among the nucleon and nucleon-to-Delta GPDs

abstract:
  We establish relations which express the generalized parton distributions
(GPDs) describing the $N\to \Delta$ transition in terms of the nucleon GPDs.
These relations are based on the known large-$N_c$ relation between the $N\to
\Delta$ electric quadrupole moment and the neutron charge radius, and a newly
derived large-$N_c$ relation between the electric quadrupole ($E2$) and Coulomb
quadrupole ($C2$) transitions. Namely, in the large-$N_c$ limit we find
$C2=E2$. The resulting relations among the nucleon and $N\to\Delta$ GPDs
provide predictions for the $N\to\Delta$ electromagnetic form factors which are
found to be in very good agreement with experiment for moderate momentum
transfers.


title: A pentaquark model for Lambda(1405)

abstract:
  We study a pentaquark model of the negative parity hyperon Lambda(1405). We
choose a specific quark configuration for trial, and use the perturbative
chiral quark model extended to four quarks and one anti-quark system. We
calculate a sigma-term and a scalar form factor of the hyperon and demonstrate
their usefulness to study the nature of the hyperon.


title: The SUSY Flavor Problem, Proton Decay and Discrete Family Symmetry

abstract:
  We consider a supersymmetric extension of the standard model, which possess a
family symmetry based on a binary dihedral group Q6, and investigate the
consequences of the family symmetry on the mixing of fermions, FCNCs and the
stability of proton.


title: Stable Multiquark Interactions

abstract:
  The necessity of adding higher order multiquark interactions to the three
flavor NJL model with $U_A(1)$ breaking, in order to stabilize its vacuum, is
discussed.


title:
Lepton flavor violating semileptonic $\tau$ decays $\tau\to lP(V)$ in a
  topcolor scenario

abstract:
  The contributions of the neutral top-pion $\pi_{t}^{0}$ and the non-universal
gauge boson $Z'$ predicted by topcolor scenario to the lepton flavor violating
$(LFV)$ semileptonic $\tau$ decays $\tau\to lP(V)$ $(P=\pi^{0}, \eta, \eta' $
and $ V=\rho^{0}, \phi)$ are discussed. We find that the contributions of $Z'$
to these decay processes are generally larger than those from $\pi_{t}^{0}$.
$\pi_{t}^{0}$ can only make the value of the branching ratio $Br(\tau\to lP)$
in the range of 1$\times10^{-11}$ $\sim$ 1$\times10^{-16}$, which is far below
the sensitivity of foreseeable experiments. With reasonable values of the free
parameters, the non-universal gauge boson $Z'$ can make the value of the
branching ratio $Br(\tau^{-}\to \mu^{-}\phi)$ reach 1$\times10^{-7}$, which
might approach the observable threshold of near-future experiments.


title: Spontaneous Non-thermal Leptogenesis in High-scale Inflation Models

abstract:
  We argue that a non-thermal leptogenesis occurs spontaneously, without direct
couplings of the inflaton with right-handed neutrinos, in a wide class of
high-scale inflation models such as the chaotic and hybrid inflation. It is
only a finite vacuum expectation value of the inflaton, or more precisely, a
linear term in the Kahler potential, that is a prerequisite for the spontaneous
non-thermal leptogenesis. To exemplify how it works, we show that a chaotic
inflation model in supergravity naturally produces a right amount of baryon
asymmetry via the spontaneous non-thermal leptogenesis. We also discuss the
gravitino production from the inflaton.


title:
Revisiting electroweak baryogenesis in context of cancelation scenario
  in the MSSM

abstract:
  We study electric dipole moment bounds on CP-violating phases in the MSSM
with special emphasis on the cancelation scenario. We find that in the range
favored by electroweak baryogenesis ({\it i.e.,} $|\mu|\simeq M_1$ or
$|\mu|\simeq M_2$), $\sin [\theta_\mu+\theta_{M_1}]$ can be as large as ${\cal
O}(1)$, even for slepton masses below 500 GeV. Such large values of the phases
promise a successful electroweak baryogenesis. We also discuss the possibility
of large CP-odd effects at a linear collider.


title: $S_3$ Higgs Potential and Texture-zeros in Supersymmetric Standard Model

abstract:
  The mass matrix forms of quarks and leptons are discussed in theory with
permutation flavor symmetry. The structure of scalar potential is analyzed in
case that electroweak doublet Higgs fields have non-trivial flavor symmetry
charges. We find that realistic forms of mass matrices are obtained dynamically
in the vacuum of the theory, where some of Higgs bosons have vanishing
expectation values which lead to vanishing elements in quark and lepton mass
matrices. An interesting point is that, due to the flavor group structure, the
up and down quark mass matrices are automatically made different in the vacuum,
which lead to non-vanishing generation mixing. It is also discussed that flavor
symmetry is needed to be broken in order not to have too light scalars.


title:
Solving the degeneracy of the lepton-flavor mixing angle theta_atm by
  the T2KK two detector neutrino oscillation experiment

abstract:
  If the atmospheric neutrino oscillation amplitude, sin^2 2theta_atm is not
maximal, there is a two fold ambiguity in the neutrino parameter space: sin^2
theta_atm>0.5 or sin^2 theta_atm<0.5. In this article, we study the impact of
this degeneracy, the so-called octant degeneracy, on the T2KK experiment, which
is a proposed extension of the T2K (Tokai-to-Kaimoka) neutrino oscillation
experiment with an additional water cherenkov detector placed in Korea. We find
that the degeneracy between sin^2 theta_atm= 0.40 and 0.60 can be resolved at
the 3sigma level for sin^2 2theta_rct>0.12 (0.08) for the optimal combination
of a 3.0^circ off-axis beam (OAB) at SK (L=295km) and a 0.5^circ OAB at
L=1000km with a far detector of 100kton volume, after 5 years of exposure with
1.0(5.0) time 10^21 POT/year, if the hierarchy is normal. We also study the
influence of the octant degeneracy on the capability of T2KK experiment to
determine the mass hierarchy and the leptonic CP phase. The capability of
rejecting the wrong mass hierarchy grows with increasing sin^2 theta_atm when
the hierarchy is normal, whereas it is rather insensitive to sin^2 theta_atm
for the inverted hierarchy. We also find that the 1sigma allowed region of the
CP phase is not affected significantly even when the octant degeneracy is not
resolved. All our results are obtained for the 22.5 kton Super-Kamiokande as a
near detector and without an anti-neutrino beam.


title: Neutrino Masses and Interactions in a Model with Nambu-Goldstone Bosons

abstract:
  A natural scenario for the generation of neutrino masses is the see-saw
mechanism, in which a large right-handed neutrino mass makes the left-handed
neutrinos light. We review a special case when the Majorana masses originate
from spontaneous breaking of a global U(1)XU(1) symmetry. The interactions of
the right-handed with the left-handed neutrinos at the electorweak scale
further break the global symmetry giving mass to one pseudo Nambu-Goldstone
boson (pNGB). The pNGB can then generate a long-range force. Leptogenesis
occurs through decays of heavy neutrinos into the light ones and Higgs
particles. The pNGB can become the acceleron field and the neutrino masses vary
with the value of the scalar field. The talk is a brief preview of the results
in reference [11].


title:
Effects of R-parity violating supersymmetry in top pair production at
  linear colliders with polarized beams

abstract:
  In the minimal supersymmetric standard model with R-parity violation, the
lepton number violating top quark interactions can contribute to the top pair
production at a linear collider via tree-level u-channel squark exchange
diagrams. We calculate such contributions and find that in the allowed range of
these R-violating couplings, the top pair production rate as well as the top
quark polarization and the forward-backward asymmetry can be significantly
altered. By comparing the unpolarized beams with the polarized beams, we find
that the polarized beams are more powerful in probing such new physics.


title:
Momentum Flow Correlations from Event Shapes: Factorized Soft Gluons and
  Soft-Collinear Effective Theory

abstract:
  The distributions of two-jet event shapes contain information on
hadronization in QCD. Near the two-jet limit, these distributions can be
described by convolutions of nonperturbative event shape functions with the
same distributions calculated in resummed perturbation theory. The shape
functions, in turn, are determined by correlations of momentum flow operators
with each other and with light-like Wilson lines, which describe the coupling
of soft, wide-angle radiation to jets. We observe that leading power
corrections to the mean values of event shapes are determined by the
correlation of a single momentum flow operator with the relevant Wilson lines.
This generalizes arguments for the universality of leading power corrections
based on the low-scale behavior of the running coupling or resummation. We also
show how a study of the angularity event shapes can provide information on
correlations involving multiple momentum flow operators, giving a window to the
system of QCD dynamics that underlies the variety of event shape functions. In
deriving these results, we review, develop and compare factorization techniques
in conventional perturbative QCD and soft-collinear effective theory (SCET). We
give special emphasis to the elimination of double counting of momentum regions
in these two formalisms.


title:
The casuality and/or energy-momentum conservation constraints on QCD
  amplitudes in small x regime

abstract:
  The causality and/or the energy-momentum constraints on the amplitudes of
high energy processes are generalized to QCD. The constraints imply that the
energetic parton may experience at most one inelastic collision only and that
the number of the constituents in the light cone wave function of the
projectile is increasing with the collision energy and the atomic number.


title: Central meson production in diffractive reactions

abstract:
  I discuss double-diffractive (double-elastic) production of the $\eta'$ and
$\eta_c$ mesons in the $pp \to p X p$ reaction within the formalism of
unintegrated gluon distribution functions (UGDF). The contribution of $\gamma^*
\gamma^* \to \eta'$ fusion is estimated. The distributions in the Feynman $x_F$
(or rapidity), transferred four-momenta squared between initial and final
protons ($t_1$, $t_2$) and azimuthal angle difference between outgoing protons
($\Phi$) are calculated and discussed. The results are compared with the WA102
data. Predictions at higher energies are presented.


title: Two Universal Extra Dimensions

abstract:
  We review the main results of the study of the Standard model propagating in
two universal extra dimensions. Gauge bosons give rise to heavy spin-1 and
spin-0 particles. The latter constitute the lightest Kaluza-Klein (KK) particle
in the level (1,0). The level (1,1) can be s-channel produced. The main signals
at the Tevatron and the LHC will be several $t\bar t$ resonances.


title:
The Interplay Between Collider Searches For Supersymmetric Higgs Bosons
  and Direct Dark Matter Experiments

abstract:
  In this article, we explore the interplay between searches for supersymmetric
particles and Higgs bosons at hadron colliders (the Tevatron and the LHC) and
direct dark matter searches (such as CDMS, ZEPLIN, XENON, EDELWEISS, CRESST,
WARP and others). We focus on collider searches for heavy MSSM Higgs bosons
($A$, $H$, $H^{\pm}$) and how the prospects for these searches are impacted by
direct dark matter limits and vice versa. We find that the prospects of these
two experimental programs are highly interrelated. A positive detection of $A$,
$H$ or $H^{\pm}$ at the Tevatron would dramatically enhance the prospects for a
near future direct discovery of neutralino dark matter. Similarly, a positive
direct detection of neutralino dark matter would enhance the prospects of
discovering heavy MSSM Higgs bosons at the Tevatron or the LHC. Combining the
information obtained from both types of experimental searches will enable us to
learn more about the nature of supersymmetry.


title: A new way to detect the Higgs

abstract:
  We describe a new technique to look for evidence of the Higgs mechanism. The
usual method involves seeking evidence for the Higgs boson either directly or
via the indirect effect that a virtual Higgs boson would have on a variety of
Standard Model parameters. The new technique looks for Higgs field effects that
are predicted to reduce the masses of heavy particles when they are in the
presence of other heavy particles.


title: Early stage thermalization via instabilities

abstract:
  Due to anisotropic momentum distributions the parton system produced at the
early stage of relativistic heavy-ion collisions is unstable with respect to
the magnetic plasma modes. The instabilities isotropize the system and thus
speed up the process of its equilibration. The whole scenario of the
instabilities driven isotropization is reviewed.


title:
Study of FCNC mediated rare B_s decays in a single universal extra
  dimension scenario

abstract:
  We study the rare semileptonic and radiative leptonic B_s decays in the
universal extra dimension model. In this scenario, with a single extra
dimension, there exists only one new parameter beyond those of the standard
model, which is the inverse of the compactification radius R. We find that with
the additional contributions due to the KK modes the branching ratios of the
rare B_s decays are enhanced from their corresponding standard model values and
the zero point of the forward backward asymmetries are shifted towards the
left.


title: The minimal model of fermionic dark matter

abstract:
  We explore the minimal extension of the Standard Model with fermionic cold
dark matter. The interactions between the dark matter and the Standard Model
matters are described by the non-renormalizable dimension-5 term. We show that
the measured relic abundance of the cold dark matter can be explained in our
model and predict the direct detection cross section. The direct search of the
dark matter provides severe constraints on the mass and coupling of the minimal
fermionic dark matter with respect to the Higgs boson mass.


title: Nonlinear k_t factorisation: recent progress and perspectives

abstract:
  Hard scattering in a strongly absorptive regime requires a novel nonlinear
k_t -- factorization. Here we discuss two recent developments: firstly the
evaluation of radiative corrections to single particle spectra, and secondly an
extension of the formalism to address topological cross sections and unitarity
cutting rules.


title:
Three loop MSbar transversity operator anomalous dimensions for fixed
  moment n <= 8

abstract:
  We compute the anomalous dimensions of the transversity operator at three
loops in the MSbar scheme for fixed moment n where n <= 8. The results for the
RI' renormalization scheme are also provided for an arbitrary linear covariant
gauge for n <= 7.


abstract:
  These are the proceedings of the workshop on ``Lattice QCD, Chiral
Perturbation Theory and Hadron Phenomenology'' held at the European Centre for
Theoretical Studies in Nuclear Physics and Related Areas from October 2 to 6,
2006. The workshop concentrated on bringing together researchers working in
lattice QCD and chiral perturbation theory with the aim of improving our
understanding how hadron properties can be calculated and analyzed from first
principles. Included are a short contribution per talk.


title:
Chiral condensate thermal evolution at finite baryon chemical potential
  within ChPT

abstract:
  We present a model independent study of the chiral condensate evolution in a
hadronic gas, in terms of temperature and baryon chemical potential. The
meson-meson interactions are described within Chiral Perturbation Theory and
the pion-nucleon interaction by means of Heavy Baryon Chiral Perturbation
Theory, both at one loop. Together with the virial expansion, this provides a
model independent systematic expansion at low temperatures and chemical
potentials, which includes the physical quark masses. This can serve as a
guideline for further studies on the lattice. We also obtain estimates of the
critical line of temperature and chemical potential where the chiral condensate
melts, which systematically lie somewhat higher than recent lattice
calculations but are consistent with several hadronic models.


title:
New signals of a R-parity violating model of neutrino mass at the
  Tevatron

abstract:
  In a variety models of neutrino masses and mixings the lighter top squark
decays into competing R - parity violating and R - parity conserving channels.
Using Pythia we have estimated in a model independent way the minimum value of
P $\equiv$ BR($\widetilde t_1 \to c \widetilde \chi_1^0 $) $\times$
BR($\widetilde t_1 \to l^+_i b$), where $l_i = e^+$ and $\mu^+$, corresponding
to an observable signal involving the final state
  1$l$ + jets +$\met$ (carried by the neutrinos from the $\tilde \chi_1^0$
decay) at Tevatron Run II. For the kinematical cuts designed in this paper P
depends on $m_{\widetilde t_1}$ only. We then compute P for representative
choices of the model parameters constrained by the oscillation data and find
that over a significant region of the allowed parameter space P is indeed
larger than $P_{min}$. This signal is complementary to the dilepton + dijet
signal studied in several earlier experimental and phenomenological analyses
and may be observed even if BR($\widetilde t_1 \to l^+_i b$) is an order of
magnitude smaller than BR($\widetilde t_1 \to c \widetilde \chi_1^0$). The
invariant mass distribution of the hardest lepton and the hardest jet may
determine $m_{\widetilde t_1}$ and reveal the lepton number violating nature of
the underlying interaction. The invariant mass distribution of the two lowest
energy jets may determine $m_{\widetilde \chi_1^0}$.


title:
Quantum loops in radiative decays of the $a_1$ and $b_1$ axial-vector
  mesons

abstract:
  A previous model where the low-lying axial-vector mesons are dynamically
generated, implementing unitarity in coupled channels in the
vector-pseudoscalar ($VP$) meson interaction, is applied to evaluate the decay
widths of the a_1(1260)$ and $b_1(1235)$ axial-vector mesons into $\pi\gamma$.
Unlike the case of the $a_1$, the $b_1$ radiative decay is systematically
underestimated at tree level. In this work we evaluate for the first time the
loop contribution coming from an initial $VP$ vertex. Despite the large
superficial divergence of the loops, the convergence of the relevant loops can
be established by using arguments of gauge invariance. The partial decay widths
obtained agree very well with the experimental values within uncertainties, and
show that the loop contribution is crucial in the $b_1$ case and also important
for the $a_1$ case.


title:
Bounds on Ratios of DIS Structure Functions from the Color Dipole
  Picture

abstract:
  We derive bounds on ratios of deep inelastic nucleon structure functions from
the color dipole picture of high energy photon-hadron scattering. We find an
upper bound on the ratio R=sigma_L/sigma_T of the total cross sections for
longitudinally and transversely polarized photons. We further obtain bounds on
the ratio of deep inelastic structure functions F_2 taken at the same energy
but at different photon virtualities. It is shown that these bounds can be used
to constrain the range of applicability of the dipole picture.


title:
Comparison of different non-linear equations and corresponding
  unitarization schemes

abstract:
  Different forms of non-linear equations which mimic parton saturation in the
non-perturbative regime are examined. These equations lead to corresponding
unitarization schemes in the impact parameter representation of the hadron
scattering amplitude. It is shown how specific properties of the non-linear
equations reflect different features of the diffraction processes.


title:
Gauge boson families in grand unified theories of fermion masses: E_6^4
  x S_4

abstract:
  In third quantization the origin of fermion families is easy to understand:
the electron field, the muon field and the tau field are identical fields in
precisely the same sense as three electrons are identical and undistinguishable
particles of a theory of second quantization. In both cases, the permutation of
these fields or particles leaves the lagrangian invariant. One can also extend
the concept of family to gauge bosons. This can be obtained through the
semidirect product of the gauge group with the group of permutations of n
objects. In this paper we have studied the group E_6^4 x S_4. We explain why we
have chosen E_6 as fundamental gauge group factor and why we start with a model
with four gauge boson/fermion families to accommodate and to fit the standard
model with only three fermion families. We suggest a possible symmetry breaking
pattern of E_6^4 x S_4 that could explain quark, lepton and neutrino masses and
mixings.


title: Non trivial spacetime effects in a supersymmetric model

abstract:
  We study a ${N=1}$ supersymmetric model in a ${S}^{1}{\times R}^{3}$
spacetime. We find that by choosing appropriate boundary conditions for the
contributing fields supersymmetry can be preserved. However if we add a hard
supersymmetry breaking term, we observe that for small values of the length of
the ${S}^{1}$ dimension, supersymmetry remains unbroken and breaks
spontaneously when the length exceeds a critical value. The final picture
resembles the first order phase transition picture.


title: Mass ambiguities in cascade decays

abstract:
  We review the use of invariant mass distributions in cascade decays to
measure the masses of New Physics (NP) particles in scenarios where the final
NP cascade particle is invisible. We extend earlier work by exploring further
the problem of multiple solutions for the masses.


title: Parity doublers in chiral potential quark models

abstract:
  The effect of spontaneous breaking of chiral symmetry over the spectrum of
highly excited hadrons is addressed in the framework of a microscopic chiral
potential quark model (Generalised Nambu-Jona-Lasinio model) with a vectorial
instantaneous quark kernel of a generic form. A heavy-light quark-antiquark
bound system is considered, as an example, and the Lorentz nature of the
effective light-quark potential is identified to be a pure Lorentz-scalar, for
low-lying states in the spectrum, and to become a pure spatial Lorentz vector,
for highly excited states. Consequently, the splitting between the partners in
chiral doublets is demonstrated to decrease fast in the upper part of the
spectrum so that neighboring states of an opposite parity become almost
degenerate. A detailed microscopic picture of such a "chiral symmetry
restoration" in the spectrum of highly excited hadrons is drawn and the
corresponding scale of restoration is estimated.


title: Lepton masses and mixing without Yukawa hierarchies

abstract:
  We investigate the neutrino masses and mixing patten in a version of the
$SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ model with one extra exotic charged
lepton per family as introduced by Ozer. It is shown that an extended scalar
sector, together with a discrete $Z_2$ symmetry, is able to reproduce a
consistent lepton mass spectrum without a hierarchy in the Yukawa coupling
constants, the former as a carefull balance between one universal see-saw and
two radiative mechanisms.


title: Quasi-particle perspective on critical end-point

abstract:
  Within a quasi-particle model for the equation of state of strongly
interacting matter for two quark flavors we include phenomenologically features
of the QCD critical point and discuss its impact on the equation of state. In
particular, we investigate the influence on the quark number susceptibility and
the pattern of isentropic trajectories which describe the evolutionary paths of
matter during the hydrodynamical expansion of a heavy-ion collision.


title:
Pion and Kaon Masses and Pion Form Factors from Dynamical
  Chiral-Symmetry Breaking with Light Constituent Quarks

abstract:
  Light constituent quark masses and the corresponding dynamical quark masses
are determined by data, the quark-level linear sigma model, and infrared QCD.
This allows to define effective nonstrange and strange current quark masses,
which reproduce the experimental pion and kaon masses very accurately, by
simple additivity. In contrast, the usual nonstrange and strange current quarks
employed by the Particle Data Group and Chiral Perturbation Theory do not allow
a straightforward quantitative explanation of the pion and kaon masses.


title: The role of $D^{\star\star}$ in $B^-\to D_s^+ K^- \pi^-$

abstract:
  The BaBar collaboration has recently reported the observation of the decay
mode $B^-\to D_s^+ K^- \pi^-$. We investigate the role played by the
$D^{\star\star}$ resonances in this decay mode using HQET. Although these
resonances cannot appear as physical intermediate states in this reaction,
their mass is very close to the $D_s^+ K^-$ production threshold and may,
therefore, play a prominent role. We pursue this possibility to extract
information on the properties of the strong $D^{\star\star} D M$ couplings. As
a byproduct of this analysis we point out that future super-$B$ factories may
be able to measure the $D_0^0 D^\star \gamma$ radiative coupling through the
reaction $B^-\to D^\star \gamma \pi^-$.


title:
Double charm production e^+ e^- \to J/\psi + c \bar{c} at B factories
  with next-to-leading order QCD corrections

abstract:
  The inclusive $J/\psi$ production in $e^+ e^- \to J/\psi c\bar c$ at B
factories is one of the most challenging open problems in heavy quarkonium
physics. The observed cross section of this double charm production process is
larger than existing leading order (LO) QCD predictions by a factor of 5. In
the nonrelativistic QCD (NRQCD) factorization formalism, we calculate the
next-to-leading order (NLO) QCD virtual and real corrections to this process,
and find that these corrections can substantially enhance the cross section
with a $K$ factor of about 1.8. We further take into account the feeddown
contributions from higher charmonium states (mainly the $\psi(2S)$ as well as
$\chi_{cJ}$) and the two-photon contributions, and find that the discrepancy
between theory and experiment can be largely removed.


title: Extracting infrared QCD coupling from meson spectrum

abstract:
  In the framework of the Bethe-Salpeter formalism used in previous papers to
evaluate the quarkonium spectrum, here we reverse the point of view to extract
an ``experimental'' running coupling alpha_s(Q^2) in the infrared (IR) region
from the data. The values so obtained agree within the errors with the
Shirkov-Solovtsov analytic coupling for 200 MeV <Q< 1.2 GeV, thus giving a very
satisfactory unifying description of high and low energy phenomena. Below 1 GeV
however alpha_s(Q^2) seems to vanish as Q to 0. The paper is based on a work in
progress in collaboration with D.V.Shirkov.


title: Jet measurements in the ALICE experiment at the LHC

abstract:
  Jet tomography probes provide a means to explore the properties of highly
compressed and excited nuclear matter created in heavy ion collisions. The
capabilities of the ALICE experiment, with its electromagnetic calorimeter
(EMCal) upgrade, to trigger on and reconstruct jets in p+p and Pb+Pb collisions
at $\sqrt{s_{NN}}$=5.5 TeV are presented.


title:
Detection of SUSY Signals in Stau Neutralino Co-annihilation Region at
  the LHC

abstract:
  We study the prospects of detecting the signal in the stau neutralino
co-annihilation region at the LHC using tau leptons. The co-annihilation signal
is characterized by the stau and neutralino mass difference (dM) to be 5-15 GeV
to be consistent with the WMAP measurement of the cold dark matter relic
density as well as all other experimental bounds within the minimal
supergravity model. Focusing on tau's from neutralino_2 --> tau stau --> tau
tau neutralino_1 decays in gluino and squark production, we consider inclusive
MET+jet+3tau production, with two tau's above a high E_T threshold and a third
tau above a lower threshold. Two observables, the number of opposite-signed tau
pairs minus the number of like-signed tau pairs and the peak position of the
di-tau invariant mass distribution, allow for the simultaneous determination of
dM and M_gluino. For dM = 9 GeV and M_gluino = 850 GeV with 30 fb^-1 of data,
we can measure dM to 15% and M_gluino to 6%.


title: QCD Green Functions and their Application to Hadron Physics

abstract:
  In a functional approach to QCD the infrared behaviour of Landau gauge Green
functions is investigated. It can be proven that the ghost Dyson-Schwinger
equation implies the Gribov-Zwanziger horizon condition. Its relation to the
Kugo-Ojima confinement scenario is elucidated. Positivity violation for gluons
is demonstrated, and the analytic structure of the gluon propagator is studied.
Quark confinement is related to an infrared divergence of the quark-gluon
vertex. It is shown that in the latter various components are non-vanishing due
to the dynamical breaking of chiral symmetry. As a result an infrared finite
running coupling in the Yang-Mills sector is derived whereas the running
coupling related to the quark-gluon vertex is infrared divergent.
  In Coulomb gauge QCD already the one-gluon-exchange (over-)confines. This
leads to a vanishing quark propagator, and thus quarks are confined.
Nevertheless colour singlet quantities derived from the quark propagator are
well-defined. Especially the expression for the quark condensate proves that
chiral symmetry is dynamically broken. As expected the properties of mesons can
be directly calculated whereas the mass of coloured diquarks diverges, and thus
diquarks are confined. The latter nevertheless possess a well-defined size.
  In the third part the results obtained so far will be used to formulate a
covariant Faddeev approach to nucleons. The resulting amplitudes describe the
quark core of the nucleon. Besides the mass of this state also the
electromagnetic form factors are calculated. The results for charge radii and
magnetic moments as a function of the quark current mass provide some
indication what the missing pion cloud may contribute to the nucleons'
properties.


title: Microscopic primordial black holes and extra dimensions

abstract:
  We examine the production and evolution of microscopic black holes in the
early universe in the large extra dimensions scenario. We demonstrate that,
unlike in the standard four-dimensional cosmology, in large extra dimensions
absorption of matter from the primordial plasma by the black holes is
significant and can lead to rapid growth of the black hole mass density. This
effect can be used to constrain the conditions present in the very early
universe. We demonstrate that this constraint is applicable in regions of
parameter space not excluded by existing bounds.


title: Production of rho meson pair in gamma* gamma* collisions

abstract:
  We have shown that the lowest order QCD amplitude, i.e. the quark exchange
contribution, to the forward production of a pair of longitudinally polarized
rmesons in the scattering of two virtual photons gamma (Q1) gamma (Q2) rho rho
factorizes in two different ways: the part with transverse photons is described
by the QCD factorization formula involving the generalized distribution
amplitude of two final rho mesons, whereas the part with longitudinally
polarized photons takes the QCD factorized form with the gamma rho transition
distribution amplitude. Perturbative expressions forthese, in general,
non-perturbative functions are obtained in terms of the rho meson distribution
amplitude.


title: Towards precision determination of unintegrated Parton Density Functions

abstract:
  First attempts are described to determine the unintegrated Parton Density
Function of the gluon from a fit to measurements of the structure function
$F_2(x,Q^2)$ and also $F_2^c(x,Q^2)$ measured at HERA. Reasonable descriptions
of both structure functions are obtained, but the gluon densities determined
are different.


title:
Model-independent resonance parameter extraction using the trace of K
  and T matrices

abstract:
  A model-independent method for the determination of Breit-Wigner resonance
parameters is presented. The method is based on eliminating the dependence on
the choice of channel basis by analyzing the trace of the K and T matrices in
the coupled-channel formalism, rather than individual matrix elements of the
multichannel scattering matrix.


title: Minimal Flavour Violation and Beyond

abstract:
  Starting from the effective-theory framework for Minimal Flavour Violation,
we give a systematic definition of next-to-minimal (quark) flavour violation in
terms of a set of spurion fields exhibiting a particular hierarchy with respect
to a small (Wolfenstein-like) parameter. A few illustrative examples and their
consequences for charged and neutral decays with different quark chiralities
are worked out in some detail. Our framework can be used as a model-independent
classification scheme for the parameterization of flavour structure from
physics beyond the Standard Model.


title: Baryon resonances in large $N_c$ QCD

abstract:
  The baryon spectra are discussed in the context of the $1/N_c$ expansion
approach, with emphasis on mixed symmetric states. The contributions of the
spin dependent terms as a function of the excitation energy are shown
explicitly. At large energies these contributions are expected to vanish.


title: Relativistic five-quark equations and exotic baryons with isospin I=5/2

abstract:
  The relativistic five-quark equations are found in the framework of the
dispersion relation technique.The five-quark amplitudes for the low-lying
exotic baryons including the up and down quarks are calculated.The poles of the
five-quark amplitudes determine the masses and the widths of nonstrange exotic
baryons(isospin I=5/2). The mass spectrum of the E+++ exotic baryons with
JP=1/2+,3/2+, 5/2+ is calculated.


title: Deflected Anomaly Mediation and Neutralino Dark Matter

abstract:
  We study the phenomenology of the neutralino dark matter in the so called
deflected anomaly mediation scenario. This scheme is obtained from the minimal
anomaly mediated scenario by introducing a gauge mediated sector with $N_f$
messenger fields. Unlike the former scheme the latter has no tachyons. We find
that the neutralino is still the LSP in a wide region of the parameter space:
it is essentially a pure bino in the scenario with $N_f=1$ while it can also be
a pure higgsino for $N_f>1$. This is very different from the naive anomaly
mediated scenario which predicts a wino like neutralino. Moreover we do not
find any tachyonic scalars in this scheme. After computing the relic density
(considering all the possible coannihilations) we find that there are regions
in the parameter space with values compatible with the latest WMAP results with
no need to consider moduli fields that decay in the early universe.


title: 1+1 Dimensional Hydrodynamics for High-energy Heavy-ion Collisions

abstract:
  A 1+1 dimensional hydrodynamical model in the light-cone coordinates is used
to describe central heavy-ion collisions at ultrarelativistic bombarding
energies. Deviations from Bjorken's scaling are taken into account by choosing
finite-size profiles for the initial energy density. The sensitivity of fluid
dynamical evolution to the equation of state and the parameters of initial
state is investigated. Experimental constraints on the total energy of produced
particles are used to reduce the number of model parameters. Spectra of
secondary particles are calculated assuming that the transition from the
hydrodynamical stage to the collisionless expansion of matter occurs at a
certain freeze-out temperature. An important role of resonances in the
formation of observed hadronic spectra is demonstrated. The calculated rapidity
distributions of pions, kaons and antiprotons in central Au+Au collisions at
the c.m. energy 200 GeV per NN pair are compared with experimental data of the
BRAHMS Collaboration. Parameters of the initial state are reconstructed for
different choices of the equation of state. The best fit of these data is
obtained for a soft equation of state and Gaussian-like initial profiles of the
energy density, intermediate between the Landau and Bjorken limits.


title: Neutrinos and electrons in background matter: a new approach

abstract:
  We present a rather powerful method in investigations of different phenomena
that can appear when neutrinos and electrons are moving in the background
matter. This method is based on the use of the modified Dirac equations for the
particles wave functions, in which the correspondent effective potentials that
account for the matter influence on particles are included. The developed
approach establishes a basis for investigation of different phenomena which can
arise when neutrinos and electrons move in dense media, including those
peculiar for astrophysical and cosmological environments. The approach
developed is similar to the Furry representation of quantum electrodynamics,
widely used for description of particles interactions in the presence of
external electromagnetic fields, and it works when a macroscopic amount of the
background particles are confined within the scale of a neutrino or electron de
Broglie wave lengths. We consider the modified Dirac equations for neutrinos
(of both Dirac and Majorana types) and electrons having the standard model
interactions with the background matter, however generalization to extensions
of the standard model is just straightforward. To illustrate how the developed
method works, we elaborate the quantum theories of the spin light of neutrino
($SL\nu$) and spin light of electron ($SLe$) in matter.


title:
Generalized parton distributions for the nucleon in chiral perturbation
  theory

abstract:
  We complete the analysis of twist-two generalized parton distributions of the
nucleon in one-loop order of heavy-baryon chiral perturbation theory. Extending
our previous study of the chiral-even isosinglet sector, we give results for
chiral-even isotriplet distributions and for the chiral-odd sector. We also
calculate the one-loop corrections for the chiral-odd generalized parton
distributions of the pion.


title: Improved predictions for g-2 of the muon and \alpha_{\rm QED}(M_Z^2)

abstract:
  We update the Standard Model predictions of the anomalous magnetic moment of
the muon, a_\mu = (g-2)/2, and the value of the QED coupling at the Z-boson
mass, incorporating the new e^+e^- \to \pi\pi data obtained by CMD-2 and KLOE,
as well as the corrected SND data, and other improvements. The prediction for
a_\mu=11659180.4 (5.1) \times 10^{-10} is about 3 \times 10^{-10} lower than
before, and has a smaller uncertainty, which corresponds to a 3.4\sigma
deviation from the measured value. The prediction for the QED coupling is
\alpha(M_Z^2)^{-1}= 128.937 \pm 0.030.


title: Spin light of electron in matter

abstract:
  We further generalize the powerful method, which we have recently developed
for description of the background matter influence on neutrinos, for the case
of an electron moving in matter. On the basis of the modified Dirac equation
for the electron, accounting for the standard model interaction with particles
of the background, we predict and investigate in some detail a new mechanism of
the electromagnetic radiation that is emitted by moving in matter electron due
to its magnetic moment. We have termed this radiation the ``spin light of
electron" in matter and predicted that this radiation can have consequences
accessible for experimental observations in astrophysical and cosmological
settings.


title: Neutrinos and electrons in background matter

abstract:
  We present a rather powerful method in investigations of different phenomena
that can appear when neutrinos and electrons propagate in background matter.
This method is based on the use of the modified Dirac equations for particles
wave functions, in which the correspondent effective potentials accounting for
the matter influence on particles are included.


title: One-dimensional model for QCD at high energy

abstract:
  We propose a stochastic particle model in (1+1)-dimensions, with one
dimension corresponding to rapidity and the other one to the transverse size of
a dipole in QCD, which mimics high-energy evolution and scattering in QCD in
the presence of both saturation and particle-number fluctuations, and hence of
Pomeron loops. The model evolves via non-linear particle splitting, with a
non-local splitting rate which is constrained by boost-invariance and multiple
scattering. The splitting rate saturates at high density, so like the gluon
emission rate in the JIMWLK evolution. In the mean field approximation obtained
by ignoring fluctuations, the model exhibits the hallmarks of the BK equation,
namely a BFKL-like evolution at low density, the formation of a traveling wave,
and geometric scaling. In the full evolution including fluctuations, the
geometric scaling is washed out at high energy and replaced by diffusive
scaling. It is likely that the model belongs to the universality class of the
reaction-diffusion process. The analysis of the model sheds new light on the
Pomeron loops equations in QCD and their possible improvements.


title:
On flavor conservation in weak interaction decays involving mixed
  neutrinos

abstract:
  In the context of quantum field theory (QFT), we compute the amplitudes of
weak interaction processes such as $ W^{+} \rightarrow e^{+} + \nu_{e}$ and $
W^{+} \rightarrow e^{+} + \nu_{\mu}$ by using different representations of
flavor states for mixed neutrinos. Analyzing the short time limit of the above
amplitudes, we find that the neutrino states defined in QFT as eigenstates of
the flavor charges lead to results consistent with lepton charge conservation.
On the contrary, the Pontecorvo flavor states produce a violation of lepton
charge in the vertex, which is in contrast with what expected at tree level in
the Standard Model.


title:
Fourth Generation CP Violation Effect on B -> K pi, phi K and rho K in
  NLO PQCD

abstract:
  We study the effect from a sequential fourth generation quark on
penguin-dominated two-body nonleptonic B meson decays in the next-to-leading
order perturbative QCD formalism. With an enhancement of the color-suppressed
tree amplitude and possibility of a new CP phase in the electroweak penguin, we
can account better for A_{CP}(B^0 -> K^+ pi^-)-A_{CP}(B^+ -> K^+ pi^0). Taking
|V_{t's}V_{t'b}| \sim 0.02 with phase just below 90^\circ, which are consistent
with the b -> s l^+ l^- rate and the B_s mixing parameter \Delta m_{B_s}, we
find a downward shift in the mixing-induced CP asymmetries of B^0 -> K_S pi^0
and phi K_S. The predicted behavior for B^0 -> rho^0 K_S is opposite.


title: |V_ub| from UTangles and B->pi l nu

abstract:
  The angles of the CKM unitarity triangle are now known well enough to allow a
determination of its sides from global fits, with good accuracy. Assuming that
new physics does not affect the angles, UTfit and CKMfitter find $|V_{ub}| =
(3.50\pm 0.18)\times 10^{-3}$. Using this result, and new high-precision data
on the spectrum of $B\to\pi \ell\nu$ decays from BaBar, we find $|V_{ub}|
f_+(0) = (9.1\pm 0.7)\times 10^{-4}$ and $f_+(0) = 0.26\pm 0.02$, with $f_+$
the $B\to\pi$ weak transition form factor. These results are {\em completely
model-independent}. We compare them to theoretical calculations from lattice
and QCD sum rules on the light-cone.


title: Collisional dissociation of heavy mesons in dense QCD matter

abstract:
  In the framework of the reaction operator approach we calculate and resum the
multiple elastic scattering of a fast $q \bar{q}$ system traversing dense
nuclear matter. We derive the collisional broadening of the meson's transverse
momentum and the distortion of its intrinsic light cone wave function. The
medium-induced dissociation probability of heavy mesons is shown to be
sensitive to the opacity of the quark-gluon plasma and the time dependence of
its formation and evolution. We solve the system of coupled rate equations that
describe the competition between the fragmentation of $c$- and $b$-quarks and
the QGP-induced dissociation of the $D$- and $B$-mesons to evaluate the
quenching of heavy hadrons in nucleus-nucleus collisions. In contrast to
previous results on heavy quark modification, this approach predicts
suppression of $B$-mesons comparable to that of $D$-mesons at transverse
momenta as low as $p_T \sim 10$ GeV. It allows for an improved description of
the large attenuation of non-photonic electrons in central Au+Au reactions at
RHIC.


title:
Revising the Solution of the Neutrino Oscillation Parameter Degeneracies
  at Neutrino Factories

abstract:
  In the context of neutrino factories, we review the solution of the
degeneracies in the neutrino oscillation parameters. In particular, we have set
limits to $\sin^2 2\theta_{13}$ in order to accomplish the unambiguous
determination of $\theta_{23}$ and $\delta$. We have performed two different
analysis. In the first, at a baseline of 3000 km, we simulate a measurement of
the channels $\nu_e\to\nu_\mu$, $\nu_e\to\nu_\tau$ and
$\bar{\nu}_\mu\to\bar{\nu}_\mu$, combined with their respective conjugate ones,
with a muon energy of 50 GeV and a running time of five years. In the second,
we merge the simulated data obtained at L=3000 km with the measurement of
$\nu_e\to\nu_\mu$ channel at 7250 km, the so called 'magic baseline'. In both
cases, we have studied the impact of varying the $\nu_\tau$ detector
efficiency-mass product, $(\epsilon_{\nu_\tau}\times M_\tau)$, at 3000 km,
keeping unchanged the $\nu_\mu$ detector mass and its efficiency. At L=3000 km,
we found the existance of degenerate zones, that corresponds to values of
$\theta_{13}$, which are equal or almost equal to the true ones. These zones
are extremely difficult to discard, even when we increase the number of events.
However, in the second scenario, this difficulty is overcomed, demostrating the
relevance of the 'magic baseline'. From this scenario, the best limits of
$\sin^2 2\theta_{13}$, reached at $3\sigma$, for $\sin^2 2\theta_{23}=0.95$,
0.975 and 0.99 are: 0.008, 0.015 and 0.045, respectively, obtained at
$\delta=0$, and considering $(\epsilon_{\nu_\tau}\times M_\tau) \approx 125$,
which is five times the initial efficiency-mass combination.


title: Gauge mediation in supergravity and gravitino dark matter

abstract:
  Gravitinos and hidden sector fields often cause a cosmological disaster in
supersymmetric models. We find that a model with gravitational gauge mediation
solves such a problem quite naturally. The mu-problem is also absent in the
model. Moreover, the abundance of gravitinos explains correct amount of dark
matter of the universe. The dark matter abundance can be calculated without
detailed information on the thermal history of the universe such as the
reheating temperature after inflation.


title: Singlet Extensions of the MSSM

abstract:
  The Higgs sector of the MSSM may be extended to solve the mu problem by the
addition of a gauge singlet scalar field. We consider the consequences of the
singlet on the Higgs and neutralino states compositions. We discuss the
potential for discovering Higgs bosons of singlet models and observing the
unique multilepton signatures of the extended neutralino sector.


title:
$B_c(B){\to}D l\tilde{\nu}$ form factors in Light-Cone Sum Rules and the
  $D$-meson distribution amplitude

abstract:
  In this paper we calculate the weak form factors of the decays $B_c(B)\to
Dl\tilde\nu$ by using the chiral current correlator within the framework of the
QCD light-cone sum rules (LCSR). The expressions of the form factors only
depend on the leading twist distribution amplitude (DA) of the $D$ meson. Three
models of the $D$-meson distribution amplitude are employed and the calculated
form factor $F_{B_c\to D}(0)$ is given. Our prediction, by using the $D$-meson
distribution amplitude with the exponential suppression at the end points, is
compatible with other approaches, and favors the three-points sum rules (3PSR)
approach with the Coulumb corrections included.


title: Pion quark structure in QCD

abstract:
  We describe the present status of the pion distribution amplitude as it
originated from two sources: (i) a nonperturbative approach, based on QCD sum
rules with nonlocal condensates and (ii) a NLO QCD analysis of the CLEO data on
F^{\gamma\gamma^*\pi}(Q^2), supplemented by the recent high-precision lattice
calculations of the second moment of the pion distribution amplitude.


title: QCD Review

abstract:
  This review is focused on QCD theoretical issues and their phenomenological
relevance specially for LHC. It is incomplete and mostly neglects the
phenomenology of long distance physics


title: Invisible Higgs boson decay in the littlest Higgs model with T-parity

abstract:
  We study the invisible decay of the Higgs boson into a pair of stable, heavy
photons, H -> A_H A_H, in the littlest Higgs model with T-parity. For a
symmetry breaking scale of f = 450 GeV, the branching ratio H -> A_H A_H can be
as high as 93% for Higgs masses below 150 GeV. For f = 500 GeV, the invisible
branching ratio is about 75% in the Higgs mass range 135 - 150 GeV and 10
(5.5)% for m_H = 200 (600) GeV. It drops to a few percent for f larger than 600
GeV. We have found regions in parameter space, allowed by the electroweak
precision data, with such low values of f for 115 GeV < m_H < 650 GeV.


title: Models of Neutrino Masses and Mixings

abstract:
  We present a concise review of model building for neutrino masses and
mixings, with special emphasis on recent developments.


title: Axions - Motivation, limits and searches

abstract:
  The axion solution of the strong CP problem provides a number of possible
windows to physics beyond the standard model, notably in the form of searches
for solar axions and for galactic axion dark matter, but in a broader context
also inspires searches for axion-like particles in pure laboratory experiments.
We briefly review the motivation for axions, astrophysical limits, their
possible cosmological role, and current searches for axions and axion-like
particles.


title:
On the continuation of the dual amplitude with Mandelstam analyticity
  off mass shell

abstract:
  A model for the Q^2-dependent modified dual amplitude with Mandelstam
analyticity (M-DAMA) is proposed. M-DAMA preserves all the attractive
properties of DAMA, such as its pole structure and Regge asymptotics, and leads
to a generalized dual amplitude A(s,t,Q^2). This amplitude can be checked in
the known kinematical limits, i.e. it should reduce to onshell hadronic
scattering amplitude for Q^2=0 and can be related to the nuclear structure
function for t=0. In such a way we complete a unified "two-dimensionally dual"
picture of strong interaction. By comparing the structure function F_2,
resulting from M-DAMA, with phenomenological parameterizations, we fix the
Q^2-dependence in M-DAMA. In all studied regions, i.e. large and low x limits
as well as for the resonance region, the results of M-DAMA are in qualitative
agreement with the experiment. The new feature of the M-DAMA is the possible
existence, according to vector meson dominance, of Q^2 poles in negative Q^2
region, accessible in e^+ e^- annihilation.


title: Perturbative and non-perturbative QCD

abstract:
  In these lectures we give a concise introduction to the ideas of renormalon
calculus in QED and QCD. We focus in particular on the example of the Adler D
function of vacuum polarization, and on relations between perturbative
renormalon ambiguities and corresponding non-perturbative Operator Product
Expansion (OPE) ambiguities. Recent work on infrared freezing of Euclidean
observables is also discussed.


title: Lepton asymmetry in the primordial gravitational wave spectrum

abstract:
  Effects of neutrino free streaming is evaluated on the primordial spectrum of
gravitational radiation taking both neutrino chemical potential and masses into
account. The former or the lepton asymmetry induces two competitive effects,
namely, to increase anisotropic pressure, which damps the gravitational wave
more, and to delay the matter-radiation equality time, which reduces the
damping. The latter effect is more prominent and a large lepton asymmetry would
reduce the damping. We may thereby be able to measure the magnitude of lepton
asymmetry from the primordial gravitational wave spectrum.


title: Numerical tools for the theoretical study of QCD at small x

abstract:
  In this contribution we present the status of two numerical tools designed to
study the small x limit of QCD. The first one is a Monte Carlo simulation of
the BFKL evolution equation. In design of this approach emphasis has been
placed on exploiting the linear behaviour that many variants of the BFKL
evolution possess. This allows us to design a procedure which can be used to
study theoretical and phenomenological aspects of different kernels. The second
one is a semi-analytic approach to study Lipatov's effective action which
describes Reggeon interactions. The study of the properties of this action is
very complicated and we propose using a computational tool to handle the large
amount of non--local vertices and the derivation of higher order corrections.


title:
Charm quark mass dependence of the electromagnetic dipole operator
  contribution to anti-B -> X(s) gamma at O(alpha**2(s))

abstract:
  We extend existing calculations of the electromagnetic dipole operator
contribution to the total decay rate and the photon energy spectrum of the
decay \bar{B} -> X_s\gamma at O(\alpha_s^2) by working out the exact dependence
on the charm quark mass.


title:
Mirage unification at TeV scale and natural electroweak symmetry
  breaking in minimal supersymmetry

abstract:
  We propose a new minimal supersymmetric scenario with virtually no
fine-tuning in the electroweak symmetry breaking. It favors light
supersymmetric spectrum below a few TeV and predicts definite relations among
stop and gaugino masses and LSP higgsino with $\mu \lesssim 200$ GeV, which are
within the reach of coming LHC experiment.


title: Theory and Phenomenology of Neutrino Mixing

abstract:
  We review some fundamental aspects of the theory of neutrino masses and
mixing. The results of neutrino oscillation experiments are interpreted as
evidence of three-neutrino mixing. Implications for the mixing parameters and
the neutrino masses are discussed, with emphasis on the connection with the
measurements of the absolute values of neutrino masses in beta decay and
neutrinoless double-beta decay experiments and cosmological observations.


title: Neutral color-spin locking phase in neutron stars

abstract:
  We present results for the spin-1 color-spin locking phase (CSL) using a
NJL-type model in two flavor quark matter for compact stars applications. The
CSL condensate is flavor symmetric and therefore charge and color neutrality
can easily be satisfied. We find small energy gaps ~1 MeV, which make the CSL
matter composition and the EoS not very different from the normal quark matter
phase. We keep finite quark masses in our calculations and obtain no gapless
modes that could have strong consequences in the late cooling of neutron stars.
Finally, we show that the region of the phase diagram relevant for neutron star
cores, when asymmetric flavor pairing is suppressed, could be covered by the
CSL phase.


title: Chiral Dynamics beyond the Standard Model

abstract:
  The SM Lagrangian without physical scalars is rewritten as the LO of a
Low-Energy Effective Theory invariant under a higher non linear symmetry
S_{nat} \supset SU(2)_W \times U(1)_Y. Soft breaking of S_{nat} defines a
hierarchy of non standard effects dominated by universal couplings of
right-handed quarks to W. The interface of corresponding EW tests with non
perturbative QCD aspects is briefly discussed.


title: Spin light of electron in dense matter

abstract:
  We derive the modified Dirac equation for an electron undergos an influence
of the standard model interaction with the nuclear matter. The exact solutions
for this equation and the electron energy spectrum in matter are obtained. This
establishes a rather powerful method for investigation of different processes
that can appear when electrons propagate in background matter. On this basis we
study in detail the spin light of electron in nuclear matter, a new type of
electromagnetic radiation which can be emitted by an electron moving in dense
matter.


title:
Matching matrix elements and shower evolution for top-quark production
  in hadronic collisions

abstract:
  We study the matching of multijet matrix elements and shower evolution in the
case of top production in hadronic collisions at the Tevatron and at the LHC.
We present the results of the matching algorithm implemented in the ALPGEN
Monte Carlo generator, and compare them with results obtained at the parton
level, and with the predictions of the MC@NLO approach. We highlight the
consistency of the matching algorithm when applied to these final states, and
the excellent agreement obtained with MC@NLO for most inclusive quantities. We
nevertheless identify also a remarkable difference in the rapidity spectrum of
the leading jet accompanying the top quark pair, and comment on the likely
origin of this discrepancy.


title:
Which hadronic decay modes are good for $\eta_b$ searching: double
  $J/\psi$ or something else?

abstract:
  It has been controversial whether $\eta_b$ can be discovered in Tevatron Run
2 through the decay $\eta_b\to J/\psi J/\psi$ followed by $J/\psi\to
\mu^+\mu^-$. We clear this controversy by an explicit calculation which
predicts ${\rm Br}[\eta_b\to J/\psi J/\psi]$ to be of order $10^{-8}$. It is
concluded that observing eta_b through this decay mode in Tevatron Run 2 is
rather unrealistic. The eta_b may be observed in the forthcoming LHC
experiments through the 4-lepton channel, if the background events can be
significantly reduced by imposing some kinematical cuts. By some rough but
plausible considerations, we find that the analogous decay processes eta_b to
VV, D^*\bar{D}^* also have very suppressed branching ratios, nevertheless it
may be worth looking for \eta_b at LHC and Super B factory through the decay
modes \eta_b \to K_S K^{\pm}\pi^{\mp}, D^*\bar{D}.


title: Strongly coupled plasma with electric and magnetic charges

abstract:
  A number of theoretical and lattice results lead us to believe that
Quark-Gluon Plasma not too far from $T_c$ contains not only electrically
charged quasiparticles -- quarks and gluons -- but magnetically charged ones --
monopoles and dyons -- as well. Although binary systems like charge-monopole
and charge-dyon were considered in details before in both classical and quantum
settings, it is the first study of coexisting electric and magnetic particles
in many-body context. We perform Molecular Dynamics study of strongly coupled
plasmas with $\sim 1000$ particles and different fraction of magnetic charges.
Correlation functions and Kubo formulae lead to such transport properties as
diffusion constant, shear viscosity and electric conductivity: we compare the
first two with empirical data from RHIC experiments as well as results from
AdS/CFT correspondence. We also study a number of collective excitations in
these systems.


title:
Strong decay amplitudes using the Talmi-Moshinsky transformation and the
  suppressed production of the $1^{-+}$ hybrid

abstract:
  The Talmi-Moshinsky transformation is applied to the strong decay and
production of mesons. Amplitudes for conventional mesons are obtained in a
simple way and are generalised to encompass the production and decay of hybrid
states. The selection rule disfavouring hybrid decay into pairs of identical
S-wave mesons has a natural explanation and a new class of selection rules is
uncovered with implications for production of the exotic $1^{-+}$ hybrid in
$e^+e^-$ experiments, charmonia decays and the lattice.


title: Vacuum self-focussing of very intense laser beams

abstract:
  We argue that long-range photon-photon attraction induced by the dipole
interaction of two electron-positron loops can lead to "vacuum self-focussing"
of very intense laser beams. The focussing angle theta(F) is found to increase
with the beam intensity I as theta(F) I^(4/3); for the laser beams available at
present or in the near future, theta(F) 10^(-10)--10^(-7).


title: T-Matrix Approach to Quarkonium Correlation Functions in the QGP

abstract:
  We study the evolution of heavy quarkonium states with temperature in a Quark
Gluon Plasma (QGP) by evaluating the in-medium Q-\bar{Q} T-matrix within a
reduced Bethe-Salpeter equation in both S- and P-wave channels. The underlying
interaction kernel is extracted from recent finite-temperature QCD lattice
calculations of the singlet free energy of a Q-\bar{Q} pair. The bound states
are found to gradually move above the Q-\bar{Q} threshold after which they
rapidly dissolve in the hot system. The T-matrix approach is particularly
suited to investigate these mechanisms as it provides a unified treatment of
bound and scattering states including threshold effects and the transition to
the (perturbative) continuum. We apply the T-matrix to calculate Q-\bar{Q}
spectral functions as well as pertinent Euclidean-time correlation functions
which are compared to results from lattice QCD. A detailed analysis reveals
large sensitivities to the interplay of bound and scattering states, to
temperature dependent threshold energies and to the "reconstructed" correlator
used for normalization. We furthermore investigate the impact of finite-width
effects on the single-quark propagators in the QGP as estimated from recent
applications of heavy-quark rescattering to RHIC data.


title: Longitudinal Broadening of Quenched Jets in Turbulent Color Fields

abstract:
  The near-side distribution of particles at intermediate transverse momentum,
associated with a high momentum trigger hadron produced in a high energy
heavy-ion collision, is broadened in rapidity compared with the jet cone. This
broadened distribution is thought to contain the energy lost by the progenitor
parton of the trigger hadron. We show that the broadening can be explained as
the final-state deflection of the gluons radiated from the hard parton inside
the medium by soft, transversely oriented, turbulent color fields that arise in
the presence of plasma instabilities. The magnitude of the effect is found to
grow with medium size and density and diminish with increasing energy of the
associated hadron.


title: FDCSUSYDecay: A MSSM Decay package

abstract:
  FDCSUSYDecay is a FORTRAN program package generated by FDC (Feynman Diagram
Calculation) system fully automatically. It is dedicated to calculate at
tree-level all the possible 2-body decays of SUSY and Higgs particles in the
Minimal Supersymmetric extension of the Standard Model (MSSM). The format of
its output files complies with SUSY Les Houches Accord and can be easily
imported by other packages.


title: NLO jet production at central rapidities in $k_T$ factorization

abstract:
  In this contribution we discuss the inclusive production of jets in central
regions of rapidity in the context of $k_T$-factorization at next-to-leading
order (NLO). We work in the Regge limit of QCD and use the NLO BFKL results. A
jet cone definition is proposed together with a phase-space separation into
multi-Regge and quasi-multi-Regge kinematics. We discuss scattering of highly
virtual photons, with a symmetric energy scale to separate the impact factors
from the gluon Green's function, and hadron-hadron collisions, with a
non-symmetric scale choice.


title: Electroproduction of pion pairs

abstract:
  We study hard exclusive electroproduction of two pions in the QCD
factorization approach at next-to-leading order (NLO) in the strong coupling.
The pion pair can be produced both in an isovector and in an isoscalar state.
The angular distribution of the produced pion pairs allows one to project out a
component that depends on the interference of the isovector and isoscalar
channels. Using specific models for the involved generalized parton
distributions and two-pion distribution amplitudes we investigate the angular
distributions of the pion pair in NLO and compare them with HERMES data. The
differences between the LO and NLO results are moderate and the agreement with
data is satisfactory, though not perfect. Expecting new results from COMPASS
collaboration we perform the calculation also for the COMPASS kinematics.


title:
Pion distribution amplitude and form-factors: Improved Gaussian model of
  QCD vacuum

abstract:
  We describe the present status of the pion distribution amplitude (DA) as it
originated from several sources: (i) a nonperturbative approach, based on QCD
sum rules with nonlocal condensates, (ii) an O(\alpha_s) QCD analysis of the
CLEO data on F^{\gamma\gamma^*\pi}(Q^2) with asymptotic and renormalon models
for higher twists, and (iii) recent high-precision lattice QCD calculations of
the second moment of the pion DA. Then we show the comparison of the results
for the pion electromagnetic form factor, obtained in analytic perturbation
theory, with JLab data on F_{\pi}(Q^2). After that we introduce the improved
model for nonlocal condensates in QCD and show its consequences for the pion DA
and \gamma\gamma^*\to\pi transition form factor. In order to facilitate
possible applications of BMS and improved ``bunches'' we suggest approximate
analytic descriptions of their boundaries.


title: Light plasmon mode in the CFL phase

abstract:
  The self-energies and the spectral densities of longitudinal and transverse
gluons at zero temperature in the color-flavor-locked (CFL) phase are
calculated. There appears a collective excitation, a light plasmon, at energies
smaller than two times the gap parameter and momenta smaller than about eight
times the gap. The minimum in the dispersion relation of this mode at some
nonzero value of momentum corresponds to the van Hove singularity.


title: A light plasmon mode in the color-flavor-locking phase

abstract:
  We calculate the spectral densities of electric and magnetic gluons at zero
temperature in color-superconducting quark matter in the color-flavor-locking
(CFL) phase. We find a collective excitation, a plasmon, at energies smaller
than two times the gap parameter and momenta smaller than about eight times the
gap. The dispersion relation of this mode exhibits a minimum at some nonzero
value of momentum, indicating a van Hove singularity.


title:
The NMSSM Close to the R-symmetry Limit and Naturalness in $h \to aa$
  Decays for $m_a<2\mb$

abstract:
  Dominant decay of a SM-like Higgs boson into particles beyond those contained
in the minimal supersymmetric standard model has been identified as a natural
scenario to avoid fine tuning in electroweak symmetry breaking while satisfying
all LEP limits. In the simplest such extension, the next-to-minimal
supersymmetric model, the lightest CP-even Higgs boson can decay into two
pseudoscalars. In the scenario with least fine tuning the lightest CP-even
Higgs boson has mass of order 100 GeV. In order to escape LEP limits it must
decay to a pair of the lightest CP-odd Higgs bosons with Br(h -> aa)>.7 and
m_a<2m_b (so that a -> \tau^+ \tau^- or light quarks and gluons). The mass of
the lightest CP-odd Higgs boson is controlled by the soft-trilinear couplings,
A_\lambda(m_Z) and A_\kappa(m_Z). We identify the region of parameter space
where this situation occurs and discuss how natural this scenario is. It turns
out that in order to achieve m_a < 2 m_b with A_\lambda(m_Z), A_\kappa(m_Z) of
order the typical radiative corrections, the required tuning of trilinear
couplings need not be larger than 5-10 %. Further, the necessity for this
tuning can be eliminated in specific SUSY breaking scenarios. Quite
interestingly, Br(h -> aa) is typically above 70 % in this region of parameter
space and thus an appropriately large value requires no additional tuning.


title:
Quark Number Fluctuations in a Chiral Model at Finite Baryon Chemical
  Potential

abstract:
  We discuss the net quark and isovector fluctuations as well as off-diagonal
quark flavor susceptibilities along the chiral phase transition line in the
Nambu--Jona-Lasinio (NJL) model. The model is formulated at non-zero quark and
isospin chemical potentials with non-vanishing vector couplings in the
iso-scalar and iso-vector channels. We study the influence of the quark
chemical potential on the quark flavour susceptibilities in detail and the
dependence of the results on model parameters as well as on the quark mass. The
NJL model findings are compared with recent lattice results obtained in
two--flavor QCD at finite chemical potential. On a qualitative level, the NJL
model provides a consistent description of the dependence of quark number
fluctuations on temperature and baryon chemical potential. The phase diagram
and the position of the tricritical point in the NJL model are also discussed
for different parameter sets.


title: The Neutrino Suppression Scale from Large Volumes

abstract:
  We present an argument in which the scale ~ 0.1 eV associated with neutrino
masses naturally appears in a a class of (very) large volume compactifications,
being tied to a supersymmetry scale of 10^3 GeV and a string scale of 10^11
GeV. The masses are of Majorana type and there is no right-handed neutrino
within the low-energy field theory. The suppression scale 10^14 GeV is
independent of the masses of the heavy states that are integrated out. These
kind of constructions appear naturally in Type IIB flux compactifications.
However, the arguments that lead to this result rely only on a few geometrical
features of the compactification manifold, and hence can be used independently
of string theory.


title: Chiral Phase Boundary of QCD from the Functional Renormalization Group

abstract:
  We show how the functional renormalization group can be applied to a study of
chiral symmetry breaking in QCD. We discuss the running gauge coupling at
finite temperature for QCD. For scales smaller than the corresponding
temperature, the coupling is governed by a fixed point of the 3-dimensional
theory. Chiral symmetry breaking is approached if the running coupling drives
the quark sector to criticality. We analyze the phase boundary in the plane of
temperature and number of flavors. For small flavor-numbers, we find good
agreement with lattice results. For flavor numbers near the critical flavor
number, we find that the scaling of the critical temperature is determined by
the zero-temperature IR critical exponent of the running coupling.


title: Introduction to the functional RG and applications to gauge theories

abstract:
  These lectures contain an introduction to modern renormalization group (RG)
methods as well as functional RG approaches to gauge theories. In the first
lecture, the functional renormalization group is introduced with a focus on the
flow equation for the effective average action. The second lecture is devoted
to a discussion of flow equations and symmetries in general, and flow equations
and gauge symmetries in particular. The third lecture deals with the flow
equation in the background formalism which is particularly convenient for
analytical computations of truncated flows. The fourth lecture concentrates on
the transition from microscopic to macroscopic degrees of freedom; even though
this is discussed here in the language and the context of QCD, the developed
formalism is much more general and will be useful also for other systems.