title:
The three channels of the process f_1 bar-f_1 H A --> 0 in the SANC
  framework

abstract:
  In this paper we describe the implementation of the processes f_1 bar-f_1 H A
--> 0 into the framework of SANC system. Here A stands for a photon and f_1 --
for a massless fermion whose mass is neglected everywhere besides arguments of
logarithmic functions. The symbol --> 0 means that all 4-momenta flow inwards.
The derived one-loop scalar form factors can be used for any cross channel
after an appropriate permutation of their arguments s,t,u. We present the
covariant and helicity amplitudes for all three possible cross channels. For
checking of the correctness of the results first of all we observe the
independence on the gauge parameters and the validity of Ward identity
(external photon transversality), and, secondly, we make an extensive
comparison with the other independent calculations.


title: The Rarita--Schwinger field: renormalization and phenomenology

abstract:
  We discuss renormalization of propagator of interacting Rarita--Schwinger
field. Spin-3/2 contribution after renormalization takes usual resonance form.
For non-leading spin-1/2 terms we found procedure, which guarantees absence of
poles in energy plane. The obtained renormalized propagator has one free
parameter and is a straight generalization of the famous free propagator of
Moldauer and Case. Application of this propagator for production of
$\Delta^{++}(1232)$ in $\pi^{+}\particle{p}\to \pi^{+}\particle{p}$ leads to
good description of total cross-section and to reasonable agreement with
results of partial wave analysis.


title: Pion-pion scattering near threshold in the Resonance-Spectrum Expansion

abstract:
  We study the properties of the Resonance-Spectrum Expansion near threshold in
I=0 S-wave pion-pion scattering. The real part of the amplitude, when
extrapolated from above threshold to below threshold, is found to vanish at a
positive non-zero value of the total invariant mass of the system, in agreement
with predictions from perturbative chiral models. In our exact analytic
expression, the total amplitude vanishes identically at zero invariant mass.


title:
Studying the energy loss of heavy quarks via single muon production in
  PbPb collisions at $\sqrt{s_\mathrm{NN}}$=5.5 TeV

abstract:
  The effects of heavy quarks energy loss on the transverse momentum spectra of
single muons are studied. The energy loss of heavy quarks when traversing the
medium formed in PbPb collisions at $\sqrt{s_\mathrm{NN}}$=5.5 TeV is
calculated by implementing the collision geometry and the quenching weights.
The medium density is assumed to decrease at forward pseudo-rapidity and to be
proportional with pseudo-rapidity multiplicity $dN/d\eta$. Muons from W decays
can be used as a medium-blind reference to quantify the effect of heavy quarks
energy loss on the single muon production.


title:
Higgs Boson Production in Association with a Photon in Vector Boson
  Fusion at the LHC

abstract:
  Higgs boson production in association with two forward jets and a central
photon at the CERN Large Hadron Collider is analyzed, for the Higgs boson
decaying into a b bbar pair in the m_H <= 140 GeV mass region. We study both
irreducible and main reducible backgrounds at parton level. Compared to the
Higgs production via vector-boson fusion, the request of a further photon at
moderate rapidities dramatically enhances the signal/background ratio.
Inclusive cross sections for p_T^\gamma >= 20 GeV can reach a few tens of fb's.
After a suitable choice of kinematical cuts, the cross-section ratio for signal
and irreducible-background can be enhanced up to >= ~1/10, with a signal cross
section of the order of a few fb's, for m_H ~ 120 GeV. The request of a central
photon radiation also enhances the relative signal sensitivity to the WWH
coupling with respect to the ZZH coupling. Hence, a determination of the cross
section for the associated production of a Higgs boson decaying into a b bbar
pair plus a central photon in vector-boson fusion could help in constraining
the b bbar H coupling, and the WWH coupling as well. A preliminary study of QCD
showering effects points to a further significant improvement of the signal
detectability over the background.


title:
Explanation of the RHIC HBT Puzzle by a Granular Source of Quark-Gluon
  Plasma Droplets

abstract:
  We present a review on the explanation of the RHIC HBT puzzle by a granular
pion-emitting source of quark-gluon plasma droplets. The evolution of the
droplet is described by relativistic hydrodynamics with an equation of state
suggested by lattice gauge results. The granular source evolution is obtained
by superposing all of the evolutions of individual droplets. Pions are assumed
to be emitted thermally from the droplets at the freeze-out configuration
characterized by a freeze-out temperature $T_f$. We find that the average
particle emission time scales with the initial radius of the droplet. Pions
will be emitted earlier if the droplet radius is smaller. An earlier emission
time will lead to a smaller extracted HBT radius $R_{\rm out}$, while the
extracted HBT radius $R_{\rm side}$ is determined by the scale of the
distribution of the droplet centers. However, a collective expansion of the
droplets can further decrease $R_{\rm out}$. As a result, the value of $R_{\rm
out}/R_{\rm side}$ can be close to, or even less than 1 for the


title: Single-Event Handbury-Brown-Twiss Interferometry

abstract:
  Large spatial density fluctuations in high-energy heavy-ion collisions can
come from many sources: initial transverse density fluctuations, non-central
collisions, phase transitions, surface tension, and fragmentations. The common
presence of some of these sources in high-energy heavy-ion collisions suggests
that large scale density fluctuations may often occur. The detection of large
density fluctuations by single-event Hanbury-Brown-Twiss interferometry in
heavy-ion collisions will provide useful information on density fluctuations
and the dynamics of heavy-ion collisions.


title:
Spin asymmetries and correlations in lambda-pair production through the
  radiative return method

abstract:
  Exclusive baryon pair production through the radiative return is a unique
tool to determine the electric and the magnetic form factors in the timelike
region over a wide range of energies. The decay of lambda-baryons into p + pi-
can be used to measure their spin and to analyze spin-spin correlations in the
antilambda-lambda system. We evaluate the spin dependent hadronic tensor, which
describes this reaction, calculate the corresponding cross section for e+e- ->
antilambda lambda and e+e- -> antilambda lambda gamma with subsequent decays of
lambda and antilambda and present a compact formula for the correlated
distribution. We demonstrate that the relative phase between the electric and
the magnetic form factor can be determined in this analysis by considering
single spin asymmetries and correlated decay distributions. The reaction is
implemented in the event generator PHOKHARA. It is demonstrated that the
relative phase can be measured with the event sample presently accumulated at
B-factories.


title:
The Stueckelberg $Z'$ Extension with Kinetic Mixing and Milli-Charged
  Dark Matter From the Hidden Sector

abstract:
  An analysis is given of the Stueckelberg extension of the Standard Model with
a hidden sector gauge group $U(1)_X$ where the mass growth for the extra gauge
boson occurs via the Stueckelberg mechanism, and where the kinetic mixing in
the $U(1)_X\times U(1)_Y$ sector is included. Such a kinetic mixing is generic
in a broad class of supergravity and string models. We carry out a detailed
global fit of the model with the precision LEP data on and off the $Z$ pole,
with $\chi^2$ within 1% of the $\chi^2$ of the Standard Model fit. Further, it
is shown that in the absence of matter in the hidden sector, there is a single
effective parameter that controls the deviations from the Standard Model
predictions, and the dependence on the kinetic mixing emerges only when matter
in the hidden sector is included. An analysis is also given of milli-charged
dark matter arising from the hidden sector, where it is shown that such dark
matter from the Stueckelberg extension can satisfy WMAP-3 data while allowing
for a sharp $Z'$ resonance which can be detected at the Tevatron and at the LHC
via a dilepton signal generated by the Drell-Yan process.


title: Searching for the Higgs boson

abstract:
  These lectures on Higgs boson collider searches were presented at TASI 2006.
I first review the Standard Model searches: what LEP did, prospects for
Tevatron searches, the program planned for LHC, and some of the possibilities
at a future ILC. I then cover in-depth what comes after a candidate discovery
at LHC: the various measurements one has to make to determine exactly what the
Higgs sector is. Finally, I discuss the MSSM extension to the Higgs sector.


title:
A simple explanation of the PVLAS anomaly in spontaneously broken mirror
  models

abstract:
  The PVLAS anomaly can be explained if there exist millicharged particles of
mass $\stackrel{<}{\sim} 0.1$ eV and electric charge $\epsilon \sim 10^{-6} e$.
We point out that such particles occur naturally in spontaneously broken mirror
models. We argue that this interpretation of the PVLAS anomaly is not in
conflict with astrophysical constraints due to the self interactions of the
millicharged particles which lead them to be trapped within stars. This
conclusion also holds for a generic paraphoton model.


title: Xi and Omega baryons in the Skyrme model

abstract:
  The mass spectrum and magnetic moments of \Xi and \Omega baryon resonances
are investigated in the bound state approach of the Skyrme model. The empirical
hyperon spectrum shows that several hyperon resonances share a pattern of
(approximately) equal mass spacings between the states of same spin but of
opposite parity. It is found that this pattern can be explained mostly by the
energy difference between the P-wave and S-wave kaons bound to the soliton.
Although one cannot exclude the possibility that these states can be described
as pion-hyperon resonances, the present approach predicts that \Xi(1620) and
\Xi(1690) have J^P = 12^-, while \Xi(1950) has J^P = 12^+. The differences with
the quark model predictions for the \Xi and \Omega baryon spectrum are pointed
out. Several relations for the masses and magnetic moments of those resonances
are also obtained.


title: Marginally Eternal Inflation

abstract:
  We examine the amount of parameter tuning to make slow-roll inflation
marginally eternal by considering an R-invariant chaotic inflation as an
example of one-parameter tuning in supergravity. The primordial inflation turns
out to be possibly marginal in such a setup.


title: Weakly-bound Hadronic Molecule near a 3-body Threshold

abstract:
  The X(3872) seems to be a loosely-bound hadronic molecule whose constituents
are two charm mesons. A novel feature of this molecule is that the mass
difference of the constituents is close to the mass of a lighter meson that can
be exchanged between them, namely the pion. We analyze this feature in a simple
model with spin-0 mesons only. Various observables are calculated to
next-to-leading order in the interaction strength of the exchanged meson.
Renormalization requires summing a geometric series of next-to-leading order
corrections. The dependence of observables on the ultraviolet cutoff can be
removed by renormalizations of the mass of the heaviest meson, the coupling
constant for the contact interaction between the heavy mesons, and
short-distance coefficients in the operator product expansion. The
next-to-leading order correction has an unphysical infrared divergence at the
threshold of the two heavier mesons that can be eliminated by a further
resummation that takes into account the nonzero width of the heaviest meson.


title: Constructing the Leptonic Unitarity Triangle

abstract:
  Following analogy of the `db' triangle in the quark mixing case, we have
explored the construction of the `\nu_2.\nu_3' leptonic unitarity triangle
using the Maki-Nakagawa-Sakata matrix obtained by Bjorken {\it et al.} through
generalization of the tribimaximal scenario. In particular, for the U_{e3}
range 0.05-0.15, the existence of the leptonic unitarity triangle indicates a
fairly good possibility of having non zero CP violation.


title: Heat conductivity of a pion gas

abstract:
  We evaluate the heat conductivity of a dilute pion gas employing the
Uehling-Uehlenbeck equation and experimental phase-shifts parameterized by
means of the SU(2) Inverse Amplitude Method. Our results are consistent with
previous evaluations. For comparison we also give results for an (unphysical)
hard sphere gas.


title: Universality of QCD traveling-waves with running coupling

abstract:
  The Balitsky-Kovchegov QCD equation for rapidity evolution describing
saturation effects at high energy admits universal asymptotic traveling-wave
solutions when the nonlinear damping becomes effective. The asymptotic
solutions fall in universality classes depending only on some specific
properties of the solution of the associated linear equation. We derive these
solutions for the recent QCD formulations of the Balitsky-Kovchegov equation
with running coupling constant obtained from quark-loop calculation. While the
associated linear solutions depend in different ways with observables and
higher-order effects, we show that the asymptotic traveling-wave solutions all
belong to the same universality class whose solutions are given. Hence the
influence of saturation stabilizes the QCD evolution with respect to higher
order effects and leads to universal features at high enough rapidity, such as
the form of the traveling waves, the intercept of the saturation scale and
geometric scaling in square-root of the rapidity.


title: Hadronic decays of the tau lepton: Theoretical outlook

abstract:
  The structure of the form factors stemmed from the hadronization of QCD
currents in the energy region of the resonances can be explored through the
analyses of exclusive hadronic decays of the tau lepton. I give a short review
on the later theoretical progress achieved in the description of experimental
data.


title: Geometric Mean Neutrino Mass Relation

abstract:
  Present experimental data from neutrino oscillations have provided much
information about the neutrino mixing angles. Since neutrino oscillations only
determine the mass squared differences $\Delta m^2_{ij} = m^2_i - m^2_j$, the
absolute values for neutrino masses $m_i$ can not be determined using data just
from oscillations. In this work we study implications on neutrino masses from a
geometric mean mass relation $m_2=\sqrt{m_1 m_3}$ which enables one to
determined the absolute masses of the neutrinos. We find that the central
values of the three neutrino masses and their $2\sigma$ errors to be $m_1 =
(1.58\pm 0.18){meV}$, $m_2 = (9.04\pm 0.42){meV}$, and $m_3 = (51.8\pm
3.5){meV}$. Implications for cosmological observation, beta decay and
neutrinoless double beta decays are discussed.


title: Exclusive J/psi and Upsilon hadroproduction and the QCD odderon

abstract:
  We study pp and p\bar p collisions which lead to the exclusive production of
J/psi or Upsilon from the pomeron-odderon and the pomeron-photon fusion. We
calculate scattering amplitudes of these processes in the lowest order
approximation and in the framework of k_T factorization. We present estimates
of cross sections for the kinematic conditions of the Tevatron and of the LHC.


title:
Comment on "Experimental Observation of Optical Rotation Generated in
  Vacuum by a Magnetic Field"

abstract:
  We point out that recent claims of the detection of a light
pseudoscalar/scalar (axion-like) particle [1,2] are excluded at the 95% level
by an earlier experiment [3].


title:
Charged Lepton Flavour Violation and (g-2)_mu in the Littlest Higgs
  Model with T-Parity: a clear Distinction from Supersymmetry

abstract:
  We calculate the rates for the charged lepton flavour violating decays l_i ->
l_j gamma, tau -> l pi, tau -> l eta, tau -> l eta', mu^- -> e^- e^+ e^-, the
six three body leptonic decays tau^- -> l_i^- l_j^+ l_k^- and the rate for mu-e
conversion in nuclei in the Littlest Higgs model with T-Parity (LHT). We also
calculate the rates for K_{L,S} -> mu e, K_{L,S} -> pi^0 mu e and B_{d,s} ->
l_i l_j. We find that the relative effects of mirror leptons in these
transitions are by many orders of magnitude larger than analogous mirror quark
effects in rare K and B decays analyzed recently. In particular, in order to
suppress the mu -> e gamma and mu^- -> e^- e^+ e^- decay rates and the mu-e
conversion rate below the experimental upper bounds, the relevant mixing matrix
in the mirror lepton sector V_Hl must be rather hierarchical, unless the
spectrum of mirror leptons is quasi-degenerate. We find that the pattern of the
LFV branching ratios in the LHT model differs significantly from the one
encountered in the MSSM, allowing in a transparent manner to distinguish these
two models with the help of LFV processes. We also calculate (g-2)_mu and find
the new contributions to a_mu below 10^{-10} and consequently negligible. We
compare our results with those present in the literature.


title:
Distinguishing Z' signatures and the Littlest Higgs model in e+e-
  Colliders at sqrt{s} \ne M_{Z'}

abstract:
  There is a recent proposal identifying the Higgs particle of the Standard
Model as a pseudo Nambu-Goldstone boson. This new broken symmetry introduces
new particles and new interactions. Among these new interactions a central role
to get a new physics is played by two new heavy neutral gauge bosons. We have
studied the two new neutral currents in the Littlest Higgs model and compared
with other extended models. For high energy e+e- colliders we present a clear
signature for these two new neutral gauge bosons that can indicate the
theoretical origin of these particles. Previous analysis by other authors were
done at collider energies equal to the new gauge boson mass M_{A_H}. In this
paper we show that asymmetries in fermion antifermion production can display
model differences in the case M_{A_H} > sqrt{s}. For M_{A_H} < sqrt{s} we show
that the hard photon energy distribution in e+e- --> gamma + f + anti-f can
present a model dependence. For higher energies, the hard photon energy
distribution can be a clear signature for both new neutral gauge bosons. New
bounds for the new neutral gauge boson masses are also presented.


title: Initial-state parton shower kinematics for NLO event generators

abstract:
  We are developing a consistent method to combine tree-level event generators
for hadron collision interactions with those including one additional QCD
radiation from the initial-state partons, based on the limited leading-log
(LLL) subtraction method, aiming at an application to NLO event generators. In
this method, a boundary between non-radiative and radiative processes
necessarily appears at the factorization scale (mu_F). The radiation effects
are simulated using a parton shower (PS) in non-radiative processes. It is
therefore crucial in our method to apply a PS which well reproduces the
radiation activities evaluated from the matrix-element (ME) calculations for
radiative processes. The PS activity depends on the applied kinematics model.
In this paper we introduce two models for our simple initial-state leading-log
PS: a model similar to the "old" PYTHIA-PS and a p_T-prefixed model motivated
by ME calculations. PS simulations employing these models are tested using
W-boson production at LHC as an example. Both simulations show a smooth
matching to the LLL-subtracted W + 1 jet simulation in the p_T distribution of
W bosons, and the summed p_T spectra are stable against a variation of mu_F,
despite that the p_T-prefixed PS results in an apparently harder p_T spectrum.


title: Implications of \eta' Coupling in the Chiral Constituent Quark Model

abstract:
  Using the latest data pertaining to \bar u-\bar d asymmetry and the spin
polarization functions, detailed implications of the possible values of the
coupling strength of the singlet Goldstone boson \eta' have been investigated
in the \chiCQM with configuration mixing. Using \Delta u, \Delta_3, \bar u-\bar
d and \bar u/\bar d, the possible ranges of the coupling parameters a, \alpha^2
a, \beta^2 a and \zeta^2 a, representing respectively the probabilities of
fluctuations to pions, K, \eta and \eta^{'}, are found. To further constrain
the coupling strength of \eta', detailed fits have been obtained for spin
polarization functions, quark distribution functions and baryon octet magnetic
moments. The fits clearly establish that a small non-zero value of the coupling
of \eta' is preferred over the higher values of $\eta'$ as well as when
\zeta=0, the latter implying the absence of \eta' from the dynamics of \chiCQM.
Our best fit achieves an overall excellent fit to the data, in particular for
\Delta u, \Delta d, \Delta_8 as well as the magnetic moments \mu_{n},
\mu_{\Sigma^-}, \mu_{\Sigma^+} and \mu_{\Xi^-}. The implications of \eta' on
the gluon polarization have also been investigated.


title:
Pion and muon mass difference: a determining factor in elementary
  particle mass distribution

abstract:
  The most fundamental to the elementary particles is the mass they posses and
it would be of importance to explore a possible relationship amongst their
masses. Here, an attempt is made to investigate this important aspect
irrespective of their nature or scheme of classification. We show that there
exists a striking tendency for successive mass differences between elementary
particles to be close integral/half integral multiple of the mass difference
between a neutral pion and a muon. Thus indicating discreteness in the nature
of the mass occurring at elementary particle level. Further, this mass
difference of 29.318 MeV is found to be common to the mass spectra of leptons
and baryons, implying thereby existence of a basic mechanism linking elementary
particles responding to different interactions.


title:
On Participants Number Fluctuations for Given Centrality AA-Interactions
  in the Classical Glauber Approach

abstract:
  In the framework of the classical Glauber approach the exact analytical
expression for the variance of the number of participants (wounded nucleons)
for given centrality AA interactions is presented. It's shown, that in the case
of nucleus-nucleus collisions along with the optical approximation term the
additional "contact" term appears. The numerical calculations for PbPb
collisions at SPS energies show that at intermediate values of the impact
parameter the "optical" and "contact" terms contributions to the variance of
the participants number are of the same order and their sum is in a good
agreement with the results of independent MC simulations of this process. The
correlation between the numbers of participants in colliding nuclei is taken
into account. In particular it's demonstrated that in PbPb collisions at SPS
energies the variance of the total number of participants approximately three
times exceeds the Poisson one in the impact parameter region 10-12 Fm. The
fluctuations of the number of collisions are also discussed.


title: Review of Low Energy Neutrinos

abstract:
  Some issues regarding low energy neutrinos are reviewed. We focus on three
aspects i)We show that by employing very low energy (a few keV) electron
neutrinos, neutrino disappearance oscillations can be investigated by detecting
recoiling electrons with low threshold spherical gaseous TPC's. In such an
experiment, which is sensitive to the small mixing angle theta13, the novel
feature is that the oscillation length is so small that the full oscillation
takes place inside the detector. Thus one can determine accurately all the
oscillation parameters and, in particular, measure or set a good limit on
theta13. ii) Low threshold gaseous TPC detectors can also be used in detecting
nuclear recoils by exploiting the neutral current interaction. Thus these
robust and stable detectors can be employed in supernova neutrino detection.
iii) The lepton violating neutrinoless double decay is investigated focusing on
how the absolute neutrino mass can be extracted from the data


title: Gauge Singlet Scalars as Cold Dark Matter

abstract:
  In light of recent interest in minimal extensions of the Standard Model and
gauge singlet scalar cold dark matter, we provide an arXiv preprint of the
paper, published as Phys.Rev. D50 (1994) 3637, which presented the first
detailed analysis of gauge singlet scalar cold dark matter.


title:
Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor
  Playground

abstract:
  We systematically analyze the correlations between the various leptonic and
hadronic flavor violating processes arising in SUSY Grand Unified Theories.
Using the GUT-symmetric relations between the soft SUSY breaking parameters, we
assess the impact of hadronic and leptonic flavor observables on the SUSY
sources of flavor violation.


title: Effective model for particle mass generation

abstract:
  We present an effective model for particle mass generation in which we
extract generic features of the Higgs mechanism that do not depend on its
interpretation in terms of a Higgs field. In this model the physical vacuum is
assumed as a medium at zero temperature which is formed by virtual fermions and
antifermions interacting among themselves through the intermediate gauge bosons
of the standard model without Higgs sector. As a consequence the fermions
acquire their masses from theirs interactions with the vacuum and the gauge
bosons from the charge fluctuations of the vacuum. This effective model is
completely consistent with the physical mass spectrum, in such a way that the
left-handed neutrinos are massive. The masses of the electroweak gauge bosons
are properly predicted in terms of the experimental fermions masses and the
running coupling constants of the strong, electromagnetic and weak
interactions.


title: The Gaugino Code

abstract:
  Gauginos might play a crucial role in the search for supersymmetry at the
Large Hadron Collider (LHC). Mass predictions for gauginos are rather robust
and often related to the values of the gauge couplings. We analyse the ratios
of gaugino masses in the LHC energy range for various schemes of supersymmetry
breakdown and mediation. Three distinct mass patterns emerge.


title: Semileptonic $B_c$ decays and Charmonium distribution amplitude

abstract:
  In this paper we study the semileptonic decays of the $B_c$ meson in the
Light-Cone Sum Rule (LCSR) approach. The result for each channel depends on the
corresponding distribution amplitude of the final meson. For the case of $B_c$
decaying into a pseudoscalar meson, to twist-3 accuracy only the leading twist
distribution amplitude (DA) is involved if we start from a chiral current. If
we choose a suitable chiral current in the vector meson case, the main twist-3
contributions are also eliminated and we can consider the leading twist
contribution only. The leading twist distribution amplitudes of the charmonium
and other heavy mesons are given by a model approach in the reasonable way.
Employing this charmonium distribution amplitude we find the cross section
$\sigma(e^+e^-\to J/\psi+\eta_c)\simeq22.8 {fb}$ which is consistent with Belle
and BaBar's data. Based on this model, we calculate the form factors for
various $B_c$ decay modes in the corresponding regions. Extrapolating the form
factors to the whole kinetic regions, we get the decay widths and branching
ratios for various $B_c$ decay modes including their $\tau$ modes when they are
kinematically accessible.


title:
Diagonalization of the neutralino mass matrix and boson-neutralino
  interaction

abstract:
  We analyze a connection between neutralino mass sign, parity and structure of
the neutralino-boson interaction. Correct calculation of spin-dependent and
spin-independent contributions to neutralino-nuclear scattering should consider
this connection. A convenient diagonalization procedure, based on the
exponetial parametrization of unitary matrix, is suggested.


title: Electron Electric Dipole Moment from Lepton Flavor Violation

abstract:
  The general Minimal Supersymmetric Standard Model introduces new sources for
Lepton Flavor Violation (LFV) as well as CP-violation. In this paper, we show
that when both sources are present, the electric dipole moment of the electron,
$d_e$, receives a contribution from the phase of the trilinear $A$-term of
staus, $\phi_{A_\tau}$. For $\phi_{A_\tau}=\pi/2$, the value of $d_e$,
depending on the ratios of the LFV mass elements, can range between zero and
three orders of magnitude above the present bound. We show that the present
bound on $d_e$ rules out a large portion of the CP-violating and the LFV
parameter space which is consistent with the bounds on the LFV rare decays.
  We show that studying the correlation between $d_e$ and the P-odd asymmetry
in $\tau \to e\gamma$ helps us to derive a more conclusive bound on
$\phi_{A_\tau}$
  We also discuss the possibility of cancelation among the contributions of
different CP-violating phases to $d_e$.


title: Reconstructing Sparticle Mass Spectra using Hadronic Decays

abstract:
  Most sparticle decay cascades envisaged at the Large Hadron Collider (LHC)
involve hadronic decays of intermediate particles. We use state-of-the art
techniques based on the \kt jet algorithm to reconstruct the resulting hadronic
final states for simulated LHC events in a number of benchmark supersymmetric
scenarios. In particular, we show that a general method of selecting
preferentially boosted massive particles such as W, Z or Higgs bosons decaying
to jets, using sub-jets found by the \kt algorithm, suppresses QCD backgrounds
and thereby enhances the observability of signals that would otherwise be
indistinct. Consequently, measurements of the supersymmetric mass spectrum at
the per-cent level can be obtained from cascades including the hadronic decays
of such massive intermediate bosons.


title: Relating leptogenesis parameters to light neutrino masses

abstract:
  We obtain model independent relations among neutrino masses and leptogenesis
parameters. We find exact relations that involve the CP asymmetries
$\epsilon_{N_\alpha}$, the washout parameters $\tilde m_\alpha$ and
$\theta_{\alpha\beta}$, and the neutrino masses $m_i$ and $M_\alpha$, as well
as powerful inequalities that involve just $\tilde m_\alpha$ and $m_i$. We
prove that the Yukawa interactions of at least two of the heavy singlet
neutrinos are in the strong washout region ($\tilde m_\alpha\gg10^{-3} eV$).


title: Flavour Physics in the Littlest Higgs Model with T-Parity

abstract:
  We present the results of an extensive analysis of flavour physics in both
quark and lepton sectors, in the Littlest Higgs model with T-parity (LHT). In
the quark sector, we identify some interesting scenarios for new mirror quark
masses and V_Hd mixing matrix that satisfy the existing experimental
constraints from K and B physics and simultaneously allow large New Physics
effects in rare decays and CP-violating observables. In the lepton sector,
where flavour violation in the Standard Model is highly suppressed by small
neutrino masses, LHT effects turn out to be naturally huge and could be seen in
the near future measurements of lepton flavour violating decays.


title:
Ground state $1/2^+$ octet baryon sum rules predicting a chain of
  inequalities for hadron photoproduction total cross-sections on corresponding
  baryons

abstract:
  Sum rules are derived relating Dirac mean square radii and anomalous magnetic
moments of various couples of the ground state $1/2^+$ octet baryons with the
convergent integral of the difference of hadron photoproduction cross-sections
on the corresponding baryons. Taking into account the present knowledge of
static parameters of baryons a chain of inequalities for total hadronic
photoproduction cross-sections on baryons is found from those sum rules.


title:
Electromagnetic effects and scattering lengths extraction from
  experimental data on $K \to 3\pi$ decays

abstract:
  The final state interactions in $K^\pm\to\pi^\pm\pi^0\pi^0$ decays are
considered using the methods of non-relativistic quantum mechanics. We show how
to take into account the largest electromagnetic effects in the analysis of
experimental data, using the amplitudes calculated earlier. We propose the
relevant expressions for amplitude corrections valid both above and below the
two charged pion production threshold $M_{\pi^0\pi^0}=2m_{\pi^\pm}$, including
the average effect for the threshold bin. These formulae can be used in the
procedure of pion scattering lengths measurement from $M_{\pi^0\pi^0}$
spectrum.


title: Status of Sivers and Collins Single Spin Asymmetries

abstract:
  The Sivers and Collins asymmetries are the most interesting Single Spin
Asymmetries in semi-inclusive deeply inelastic scattering with transverse
target polarization. In this talk we present our understanding of these
phenomena.


title:
Full one-loop electroweak corrections to $h^0(H^0,A^0) H^\pm W^\mp$
  associated productions at $e^+e^-$ linear colliders

abstract:
  We study the complete one-loop electroweak(EW) corrections to the processes
of single charged Higgs boson production associated with a neutral Higgs
boson$(h^0,H^0,A^0)$ and a gauge boson $W^\pm$ in the framework of the minimal
supersymmetric standard model(MSSM). Numerical results at the ${\rm SPS1a'}$
benchmark point as proposed in the SPA project, are presented for
demonstration. We find that for the process $e^+e^-\to h^0H^\pm W^\mp$ the EW
relative correction can be either positive or negative and in the range of
$-15%\sim 20%$ in our chosen parameter space. While for the processes
$e^+e^-\to H^0(A^0)H^\pm W^\mp$ the corrections generally reduce the Born cross
sections and the EW relative corrections are typically of order $-10%\sim
-20%$.


title:
Decay constants of the heavy-light mesons from the field correlator
  method

abstract:
  Meson Green's functions and decay constants $f_{\Gamma}$ in different
channels $\Gamma$ are calculated using the Field Correlator Method. Both,
spectrum and $f_\Gamma$, appear to be expressed only through universal
constants: the string tension $\sigma$, $\alpha_s$, and the pole quark masses.
For the $S$-wave states the calculated masses agree with the experimental
numbers within $\pm 5$ MeV. For the $D$ and $D_s$ mesons the values of $f_{\rm
P} (1S)$ are equal to 210(10) and 260(10) MeV, respectively, and their ratio
$f_{D_s}/f_D$=1.24(3) agrees with recent CLEO experiment. The values $f_{\rm
P}(1S)=182, 216, 438$ MeV are obtained for the $B$, $B_s$, and $B_c$ mesons
with the ratio $f_{B_s}/f_B$=1.19(2) and $f_D/f_B$=1.14(2). The decay constants
$f_{\rm P}(2S)$ for the first radial excitations as well as the decay constants
$f_{\rm V}(1S)$ in the vector channel are also calculated. The difference of
about 20% between $f_{D_s}$ and $f_D$, $f_{B_s}$ and $f_B$ directly follows
from our analytical formulas.


title:
The azimuthal decorrelation of jets widely separated in rapidity as a
  test of the BFKL kernel

abstract:
  We study the decorrelation in azimuthal angle of Mueller-Navelet jets at
hadron colliders within the BFKL formalism. We introduce NLO terms in the
evolution kernel and present a collinearly-improved version of it for all
conformal spins. We show how this further resummation has good convergence
properties and is closer to the Tevatron data than a simple LO treatment.
However, we are still far from a good fit. We offer estimates of these
decorrelations for larger rapidity differences which should favor the onset of
BFKL effects and encourage experimental studies of this observable at the LHC.


title:
The impact of new neutrino DIS and Drell-Yan data on large-x parton
  distributions

abstract:
  New data sets have recently become available for neutrino and antineutrino
deep inelastic scattering on nuclear targets and for inclusive dimuon
production in pp pd interactions. These data sets are sensitive to different
combinations of parton distribution functions in the large-x region and,
therefore, provide different constraints when incorporated into global parton
distribution function fits. We compare and contrast the effects of these new
data on parton distribution fits, with special emphasis on the effects at large
x. The effects of the use of nuclear targets in the neutrino and antineutrino
data sets are also investigated.


title: Phase structure of NJL model with finite quark mass and QED correction

abstract:
  We study QED corrections to the chiral symmetry breaking in
Nambu-Jona-Lasinio (NJL) model with two flavors of quarks. In the model the
isospin symmetry is broken by differences of the current quark masses and the
electromagnetic charges between up and down quarks. In the leading order of the
1/N expansion we calculate the effective potential of the model with one-loop
QED corrections. Evaluating the effective potential, we study an influence of
the isospin symmetry breaking on the orientation of chiral symmetry breaking.
The current quark mass has an important contribution for the orientation of
chiral symmetry breaking.


title: Radiative Electroweak Symmetry Breaking in TeV-Scale String Models

abstract:
  We examine the possibility of necessary and inevitable radiative electroweak
symmetry breaking by one-loop radiative corrections in a class of string models
which are the string realization of "brane world" scenario. As an example, we
consider a simple quasi-realistic model based on a D3-brane at
non-supersymmetric C^3/Z_6 orbifold singularity, in which the electroweak Higgs
doublet fields are identified with the massless bosonic modes of the open
string on that D3-brane. We calculate the one-loop correction to the Higgs
potential, and find that its vacuum expectation value can be realized in this
specific model.


title: Sum rules for baryon decuplet magnetic moments

abstract:
  In chiral models with SU(3) group structure, baryon decuplet and octet
magnetic moments are evaluated by constructing their sum rules to yield
theoretical predictions. In these sum rules we exploit six experimentally known
baryon magnetic moments. Sum rules for flavor components and strange form
factors of the octet and decuplet magnetic moments and decuplet-to-octet
transition magnetic moments are also investigated.


title:
Remarks on the $A_{SL}^s$ and $\Delta\Gamma_s$ Studies at the Tevatron
  and Beyond

abstract:
  We give an assessment of the three approaches, undertaken by the D$\emptyset$
experiment, to probe CP violation in $B_s$ mixing without measurement of
$B_s$-$\bar B_s$ oscillations or tagging: dimuon charge asymmetry $A_{SL}$,
untagged single muon charge asymmetry $A_{SL}^s$, and lifetime difference in
untagged $B_s \to J/\psi\phi$ decay. The latter two approaches provide an
alternative avenue, if not crosscheck, to the usual mixing-decay interference
study in modes such as $B_s \to J/\psi\phi$. Prospects at the Tevatron, LHC and
(Super) B factories are discussed.


title:
Probing the lightest new gauge boson $B_H$ in the littlest Higgs model
  via the processes $\gamma\gamma \to f\bar{f}B_H$ at the ILC

abstract:
  The neutral gauge boson $B_H$ with the mass of hundreds GeV, is the lightest
particle predicted by the littlest Higgs(LH) model, and such particle should be
the first signal of the LH model at the planed ILC if it exists indeed. In this
paper, we study some processes of the $B_H$ production associated with the
fermion pair at the ILC, i.e., $\gamma\gamma\to f\bar{f}B_{H}$. The studies
show that the most promising processes to detect $B_H$ among $\gamma\gamma\to
f\bar{f}B_{H}$ are $\gamma\gamma\to l'^+l'^-B_{H}(l'=e,\mu)$, and they can
produce the sufficient signals in most parameter space preferred by the
electroweak precision data at the ILC. On the other hand, the signal produced
via the certain $B_H$ decay modes is typical and such signal can be easily
identified from the SM background. Therefore, $B_H$, the lightest gauge boson
in the LH model would be detectable at the photon collider realized at the ILC.


title: Chromomagnetic Instability and Gluonic Phase

abstract:
  We briefly report on a recent development in studies of a phase with vector
condensates of gluons (gluonic phase) in dense two-flavor quark matter.


title:
Calculation of the B_{c}leptonic decay constant using the shifted
  N-expansion method

abstract:
  We give a review and present a comprehensive calculation for the leptonic
constant B_{c} of the low-lying pseudoscalar and vector states of B_{c}-meson
in the framework of static and QCD-motivated nonrelativistic potential models
taking into account the one-loop and two-loop QCD corrections in the short
distance coefficient that governs the leptonic constant of $B_{c}$ quarkonium
system. Further, we use the scaling relation to predict the leptonic constant
of the nS-states of the (b_bar)c system. Our results are compared with other
models to gauge the reliability of the predictions and point out differences.


title:
Technicolor contribution to lepton + photon + missing energy events at
  the Tevatron

abstract:
  Events with one lepton, one photon and missing energy are the subject of
recent searches at the Fermilab Tevatron. We compute possible contributions to
these type of events from the process p pbar --> photon l nu_l nu_tau
nubar_tau, where l=e,mu in the context of a Low Scale Technicolor Model. We
find that with somewhat tighter cuts than the ones used in the CDF search, it
could be possible to either confirm or exclude this model in a small region of
its parameter space.


title: A Model with a Cosmographic Landscape

abstract:
  To argue against a too narrow focus in the LHC Higgs search, a simpleminded
model with a rich "cosmographic" vacuum structure for the generation of masses
is developed on a conceptual level. In this framework Higgs like bosons which
could exist in the LHC mass range have no preference to decay in heavy flavors.


title:
Flavor Changing Neutral Current Effects and CP Violation in the Minimal
  3-3-1 Model

abstract:
  We investigate in detail the flavor structure of the minimal 331 model and
its implications for several flavor changing neutral current (FCNC) processes.
In this model, where the weak SU(2)_L gauge group of the Standard Model is
extended to a SU(3)_L, the by far dominant new contributions come from an
additional neutral Z' gauge boson, that can transmit FCNCs at tree-level. At
the same time, electroweak precision observables receive new contributions only
at the loop level and do not constrain the model very strongly. In our
analysis, we take into account new CP violating effects that have been
neglected in earlier analyses, and account for a general flavor structure
without reference to a certain parameterization of the new mixing matrix. We
begin by studying the bounds obtained from quantities such as Delta M_K,
epsilon_K, Delta M_{d/s} as well as sin 2 beta|_{J/psi K_S}, and go on to
explore the implications for several clean rare decay channels, namely the
decays K+->pi+ nu nu, K_L -> pi0 nu nu, B_{d/s} -> mu+ mu- and K_L -> pi0 l+l-.
We find sizeable effects in all these decays, but the most interesting quantity
turns out to be the B_s - bar B_s mixing phase beta_s, as measured in the
mixing induced CP asymmetry of B_s -> J/psi phi, which can be large. In
general, we find effects in purely hadronic channels to be larger than in
(semi-)leptonic ones, due to a suppression of the Z'-lepton couplings.


title:
The Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic
  Moment: Where do we stand?

abstract:
  We review the status of the hadronic light-by-light contribution to the muon
anomalous magnetic moment and critically compare recent calculations. We also
study in detail which momentum regions the pi^0 exchange main contribution
originates. We also argue that a_\mu^{light-by-light} = (11 \pm 4) \times
10^{-10} encompasses the present understanding of this contribution and comment
on some directions to improve on that.


title: Exclusive vector meson production at HERA from QCD with saturation

abstract:
  Following recent predictions that the geometric scaling properties of deep
inelastic scattering data in inclusive gamma*-p collisions are expected also in
exclusive diffractive processes, we investigate the diffractive production of
vector mesons. Using analytic results in the framework of the BK equation at
non-zero momentum transfer, we extend to the non-forward amplitude a
QCD-inspired forward saturation model including charm, following the
theoretical predictions for the momentum transfer dependence of the saturation
scale. We obtain a good fit to the available HERA data and make predictions for
deeply virtual Compton scattering measurements.


title: D Physics

abstract:
  Recently a lot of new experimental results on open charm hadrons have
appeared. In particular many D meson resonances have been discovered. We
discuss strong decays of positive and negative parity charmed mesons within
heavy meson chiral perturbation theory and study the impact of excited charm
states on the determination of the effective meson couplings. Motivated by
recent experimental results we also reconsider semileptonic D to P l nu and D
to V l nu decays within a model which combines heavy quark symmetry and
properties of the chiral Lagrangian. Using limits of soft collinear effective
theory and heavy quark effective theory we parametrize the semileptonic form
factors. We include excited charm meson states in our Lagrangians and determine
their impact on the charm meson semileptonic form factors. In some scenarios of
new physics an up-like heavy quark appears, which induces FCNC at tree level
for the c to u Z transitions. We investigate FCNC effects in D rare decays in
particular the c to u l+ l- transition which might occur in D+ to pi+ l+ l- and
D0 to rho0 l+ l-.


title: Some classical properties of the non-abelian Yang-Mills theories

abstract:
  We present some classical properties for non-abelian Yang-Mills theories that
we extract directly from the Maxwell's equations of the theory. We write the
equations of motion for the SU(3) Yang-Mills theory using the language of
Maxwell's equations in both differential and integral forms. We show that
vectorial gauge fields in this theory are non-fermionic sources for non-abelian
electric and magnetic fields. These vectorial gauge fields are also responsible
for the existence of magnetic monopoles. We build the continuity equation and
the energy-momentum tensor for the non-abelian case.


title: Heavy flavor production in pA collisions

abstract:
  Heavy quark production in high-energy proton-nucleus (pA) collisions is
described in the framework of the Color Glass Condensate. kT factorization is
broken even at leading order albeit a more general factorization in pA holds at
this order in terms of 2, 3 and 4 point correlators of Wilson lines in the
nuclear target. The x-evolution of these correlators is computed in the large A
and large N mean field limit of the Balitsky-Kovchegov equation. We show
results for heavy quark production at RHIC and LHC energies.


title:
Sensitivity of low energy neutrino experiments to physics beyond the
  standard model

abstract:
  We study the sensitivity of future low energy neutrino experiments to extra
neutral gauge bosons, leptoquarks and R-parity breaking interactions. We focus
on future proposals to measure coherent neutrino-nuclei scattering and
neutrino-electron elastic scattering. We introduce a new comparative analysis
between these experiments and show that in different types of new physics it is
possible to obtain competitive bounds to those of present and future collider
experiments. For the cases of leptoquarks and R-parity breaking interactions we
found that the expected sensitivity for most of the future low energy
experimental setups is better than the current constraints.


title:
U-boson production in e+e- annihilations, psi and Upsilon decays, and
  Light Dark Matter

abstract:
  We recall how a new light gauge boson emerged in Supersymmetric extensions of
the Standard Model with an extra singlet superfield, and how it could behave
very much as a light pseudoscalar, with the corresponding symmetry broken at a
scale higher than electroweak.
  Such a new gauge boson U, light and very weakly coupled, allows for Light
Dark Matter particles, which could be at the origin of the 511 keV line from
the galactic bulge. Could it be found directly in e+e- annihilations ? Not so
easily, due to various constraints on its couplings, especially axial ones,
leading to an axionlike behavior or extra parity-violation effects. Searches
for the decay Upsilon -> gamma + invisible U may be used to constrain severely
its axial coupling to the electron, f_eA = f_bA, to be less than about 10^-6
m_U(MeV).
  The vector coupling to the electron may in principle be larger. We find from
g_mu-2, under reasonable assumptions, that this coupling can be at most as
large as ~ 1.3 10^-3, for m_U < m_mu. Such a coupling of the order of 10^-3
could also be responsible for the somewhat large value of g_mu-2, compared to
Standard Model expectations.
  The U couplings to electrons are otherwise likely to be smaller, e.g. \lsim 3
10^-6 m_U(MeV), if the couplings to neutrinos and electrons are similar. This
restricts significantly the possibility of detecting a light U boson in e+e- ->
gamma U. Despite that, U exchanges can provide annihilation cross sections of
LDM particles of the appropriate size, even if this may require that light dark
matter be relatively strongly self-interacting.


title: Fermion Electric Dipole Moments in R-parity violating Supersymmetry

abstract:
  In this talk I discuss some aspects of the study of electric dipole moments
(EDMs) of the fermions, in the context of R-parity violating (\rpv)
Supersymmetry (SUSY). I will start with a brief general discussion of how
dipole moments, in general, serve as a probe of physics beyond the Standard
Model (SM) and an even briefer summary of \rpv SUSY. I will follow by
discussing a general method of analysis for obtaining the leading fermion mass
dependence of the dipole moments and present its application to \rpv SUSY case.
Then I will summarise the constraints that the analysis of $e,n$ and $Hg$ EDMs
provide for the case of trilinear \rpv SUSY couplings and make a few comments
on the case of bilinear \rpv, where the general method of analysis proposed by
us does not work.


title:
Properties of lightest mesons at finite temperature and quark/baryon
  chemical potential in instanton model of QCD vacuum

abstract:
  The thermal and quark/baryon chemical potential dependences of quark
condensate and masses of $\pi$- and $\sigma$-mesons are studied in the
instanton model of the QCD vacuum in precritical region. The impact of
phonon-like excitations of instanton liquid on the characteristics of
$\sigma$-meson in such an environment is also examined.


title: Large-Nc estimate of the chiral low-energy constants

abstract:
  Chiral low-energy constants incorporate short-distance information from the
dynamics involving heavier degrees of freedom not present in the chiral
Lagrangian. We have studied the contribution of the lightest resonances to the
chiral low-energy constants, up to O(p^6), within a systematic procedure guided
by the large-Nc limit of QCD and also including short-distance asymptotic
constraints.


title:
A GEANT-based study of atmospheric neutrino oscillation parameters at
  INO

abstract:
  We have studied the dependence of the allowed space of the atmospheric
neutrino oscillation parameters on the time of exposure for a magnetized Iron
CALorimeter (ICAL) detector at the India-based Neutrino Observatory (INO). We
have performed a Monte Carlo simulation for a 50 kTon ICAL detector generating
events by the neutrino generator NUANCE and simulating the detector response by
GEANT. A chi-square analysis for the ratio of the up-going and down-going
neutrinos as a function of $L/E$ is performed and the allowed regions at 90%
and 99% CL are displayed. These results are found to be better than the current
experimental results of MINOS and Super-K. The possibilities of further
improvement have also been discussed.


title:
Shedding light on flavour symmetries with rare decays of quarks and
  leptons

abstract:
  The impact of rare lepton decays ($\mu \to e \gamma$, $\tau \to \mu \gamma$,
>...) and rare $B$ and $K$ decays ($B\to \ell^+\ell^-$, $B\to \ell\nu$, $K\to
\pi \nu\nu$, $K\to\ell\nu$, ...) in probing the existence of an underlying
flavour symmetry is reviewd. Particualar emphasis is deveoted to the
connections between quark and lepton flavour strucutres, in the context of
generic effective field theory approach to physics beyond the SM.


title:
Impact of right-handed interactions on the propagation of Dirac and
  Majorana neutrinos in matter

abstract:
  Dirac and Majorana neutrinos can be distinguished in relativistic neutrino
oscillations if new right-handed interactions exist, due to their different
propagation in matter. We review how these new interactions affect neutrino
oscillation experiments and discuss the size of this eventually observable
effect for different oscillation channels, baselines and neutrino energies.


title:
Constraints on the size of the extra dimension from Kaluza-Klein
  gravitino decay

abstract:
  We study the consequences of the gravitino decay into dark matter. We suppose
that the lightest neutralino is the main component of dark matter. In our
framework gravitino is heavy enough to decay before Big Bang Nucleosynthesis
starts. We consider a model coming from a five dimensional supergravity
compactified on $S^1/Z_2$ with gravity in the bulk and matter localized on
tensionless branes at the orbifold fixed points. We require that the dark
matter, which is produced thermally and in the decay of Kaluza-Klein modes of
gravitino, has an abundance compatible with observation. We deduce from our
model that there are curves of constraints between the size of the
extra-dimension and the reheating temperature of the universe after inflation.


title: Gravitino Dark Matter in R-Parity Breaking Vacua

abstract:
  We show that in the case of small R-parity and lepton number breaking
couplings, primordial nucleosynthesis, thermal leptogenesis and gravitino dark
matter are naturally consistent for gravitino masses m_{3/2} \gsim 5 GeV. We
present a model where R-parity breaking is tied to B-L breaking, which predicts
the needed small couplings. The metastable next-to-lightest superparticle has a
decay length that is typically larger than a few centimeters, with
characteristic signatures at the LHC. The photon flux produced by relic
gravitino decays may be part of the apparent excess in the extragalactic
diffuse gamma-ray flux obtained from the EGRET data for a gravitino mass
m_{3/2} \sim 10 GeV. In this case, a clear signal can be expected from GLAST in
the near future.


title:
Relation between the pole and the minimally subtracted mass in
  dimensional regularization and dimensional reduction to three-loop order

abstract:
  We compute the relation between the pole quark mass and the minimally
subtracted quark mass in the framework of QCD applying dimensional reduction as
a regularization scheme. Special emphasis is put on the evanescent couplings
and the renormalization of the epsilon-scalar mass. As a by-product we obtain
the three-loop on-shell renormalization constants Zm(OS) and Z2(OS) in
dimensional regularization and thus provide the first independent check of the
analytical results computed several years ago.


title:
A simple nuclear-style mean field absorption/spin-orbit model for the
  Sivers function of the nucleon

abstract:
  I study the effect of scalar and spin-orbit absorption potentials, in the
production of a nonzero Sivers-like asymmetry in hadron-hadron high energy
collisions (Drell-Yan and single spin asymmetries). A basic model is built for
the intrinsic state of a quark in the projectile hadron. S-wave and P-wave
2-component states are considered. Before the hard event, this quark is subject
to absorbing scalar and spin-orbit local mean fields simulating interactions
with a composite target. The relevant interaction terms are found to be the
imaginary diagonal spin-orbit ones. Spin rotating terms, and scalar absorption,
are not decisive. For $x$ $=$ 0 the found Sivers asymmetry vanishes, while at
larger $x$ its qualitative dependence on $x$, $K_T$ follows the usual trends
met in available models and parameterizations. Given the present-day knowledge
of the considered phenomenological interactions, it is not possible to
establish whether the related Sivers-like asymmetry is a leading twist one.


title: Black Holes at LHC?

abstract:
  Strategies for identifying speculative mini black hole events (due to large
extra dimensions) at future colliders are reviewed. Estimates for production
cross sections, Hawking radiation, di-jet suppression and multi- mono-jet
emission are surveyed. We further report on a class of effective entropy
formulas that could lead to the formation of a final black hole remnant state,
BHR. Such BHRs could be both electrically charged and uncharged. Charged BHRs
should be observable by single stiff charged tracks in the detectors. Collinear
hadronic jets with a large missing transverse momentum are presented as new
observable signal for electrically neutral black holes.


title:
The Effect of Dynamical Parton Recombination on Event-by-Event
  Observables

abstract:
  Within a dynamical quark recombination model we explore various proposed
event-by-event observables sensitive to the microscopic structure of the
QCD-matter created at RHIC energies. Charge fluctuations, charge transfer
fluctuations and baryon-strangeness correlations are computed from a sample of
central Au+Au events at the highest RHIC energy available ($\sqrt{s_{NN}}$=200
GeV). We find that for all explored observables, the calculations yield the
values predicted for a quark-gluon plasma only at early times of the evolution,
whereas the final state approaches the values expected for a hadronic gas. We
argue that the recombination-like hadronization process itself is responsible
for the disappearance of the predicted deconfinement signatures. This might
explain why no fluctuation signatures for the transition between quark and
hadronic matter was ever observed in the experimental data up to now. However,
it might also be interpreted as a clear indication for a recombination like
hadronization process at RHIC.


title:
Heavy baryons in the Skyrme model: the role of highly anharmonic
  collective motion

abstract:
  In the heavy quark and large Nc limits, ordinary (exotic) heavy baryons can
be considered as bound states of heavy mesons (anti-mesons)and chiral solitons.
In these limits, the heavy mesons (or anti-mesons) and the chiral solitons are
extremely heavy and are presumed to fall to the bottom of the effective
potential. Previous studies have approximated the effective potential as
harmonic about the minimum. However, when realistic masses for the heavy meson
and chiral soliton are considered, longer range parts of the effective
potential can become relevant. In this paper, we show that these longer-ranged
effects yield effective wave functions which are qualitatively very different
from those expected from the combined large Nc and heavy quark limits. These
potentials can support bound heavy pentaquarks under some conditions. The
consequence of these new energy states and wave functions on the Isgur-Wise
function for the semileptonic decay of heavy baryons is also considered.


title:
Hunting a light CP-odd non-standard Higgs boson through its tauonic
  decay at a (Super) B factory

abstract:
  Several scenarios beyond the minimal extension of the Standard Model still
allow light non-standard Higgs bosons evading LEP bounds. We examine the mixing
between a light CP-odd Higgs boson and $\eta_b$ states and its implications on
a slight (but observable) lepton universality breaking in Upsilon decays which
could be measured at the percent level at a (Super) B factory.


title:
Photon polarization from helicity suppression in radiative decays of
  polarized Lambda_b to spin-3/2 baryons

abstract:
  We give a general parameterization of the Lambda_b --> Lambda(1520) gamma
decay amplitude, applicable to any strange isosinglet spin-3/2 baryon, and
calculate the branching fraction and helicity amplitudes. Large-energy form
factor relations are worked out, and it is shown that the helicity-3/2
amplitudes vanish at lowest order in soft-collinear effective theory (SCET).
The suppression can be tested experimentally at the LHC and elsewhere, thus
providing a benchmark for SCET. We apply the results to assess the experimental
reach for a possible wrong-helicity b --> s gamma dipole coupling in Lambda_b
--> Lambda(1520) gamma --> p K gamma decays. Furthermore we revisit
Lambda_b-polarization at hadron colliders and update the prediction from
heavy-quark effective theory. Opportunities associated with b --> d gamma
afforded by high-statistics Lambda_b samples are briefly discussed in the
general context of CP and flavour violation.


title: On the Ground State of QCD inside a Compact Stellar Object

abstract:
  We describe the effects of the strange quark mass and of the color and
electric neutrality on the superconducing phases of QCD.


title: Isospin of new physics in $|\Delta S|=1$ charmless B decays

abstract:
  New physics (NP) in charmless strangeness-changing $B$ and $B_s$ decays,
which are dominated by the $b \to s$ penguin amplitudes, can either preserve
isospin or change it by one unit. A general formalism is presented studying
pairs of processes related to each other by isospin reflection. We discuss
information on $\Delta I$ in NP amplitudes, provided by time-integrated
CP-violating rate asymmetries in $B^+$ and $B^0$ decays (or in $B_s$ decays),
differences between rates for isospin-reflected processes, and coefficients $S$
of $\sin \Delta m t$ in time-dependent CP asymmetries. These four asymmetries
in $B^+$ and $B^0$ decays (or five asymmetries in $B_s$ decays) are shown to
determine the magnitude and CP-violating phase of a potential isovector NP
amplitude, and the imaginary part of an isoscalar amplitude, assuming that
strong phases in NP amplitudes are negligible. This information may be compared
with predictions of specific models, for which we discuss a few examples.


title:
Tri-bimaximal Neutrino Mixing and Quark Masses from a Discrete Flavour
  Symmetry

abstract:
  We build a supersymmetric model of quark and lepton masses based on the
discrete flavour symmetry group T', the double covering of A_4. In the lepton
sector our model is practically indistinguishable from recent models based on
A_4 and, in particular, it predicts a nearly tri-bimaximal mixing, in good
agreement with present data. In the quark sector a realistic pattern of masses
and mixing angles is obtained by exploiting the doublet representations of T',
not available in A_4. To this purpose, the flavour symmetry T' should be broken
spontaneously along appropriate directions in flavour space. In this paper we
fully discuss the related vacuum alignment problem, both at the leading order
and by accounting for small effects coming from higher-order corrections. As a
result we get the relations: \sqrt{m_d/m_s}\approx |V_{us}| and
\sqrt{m_d/m_s}\approx |V_{td}/V_{ts}|.


title:
The BFKL Pomeron in the weak and strong coupling limits and kinematical
  constraints

abstract:
  We show that a resummation model for the evolution kernel at small x creates
a bridge between the weak and strong couplings. The resummation model embodies
DGLAP and BFKL anomalous dimensions at leading logarithmic orders, as well as a
kinematical constraint on the real emission part of the kernel. In the case of
pure gluodynamics the strong coupling limit of the Pomeron intercept is
consistent with the exchange of the spin-two, colorless particle.


title: Endpoint singularities in unintegrated parton distributions

abstract:
  We examine the singular behavior from the endpoint region x -> 1 in parton
distributions unintegrated in both longitudinal and transverse momenta. We
identify and regularize the singularities by using the subtraction method, and
compare this with the cut-off regularization method. The counterterms for the
distributions with subtractive regularization are given in coordinate space by
compact all-order expressions in terms of eikonal-line operators. We carry out
an explicit calculation at one loop for the unintegrated quark distribution. We
discuss the relation of the unintegrated parton distributions in subtractive
regularization with the ordinary parton distributions.


title: Testing PVLAS axions with resonant photon splitting

abstract:
  The photon splitting gamma -> gamma gamma in a time-independent and
inhomogeneous magnetized background is considered when neutral and ultralight
spin-0 particles are coupled to two-photons. Depending on the inhomogeneity
scale of the external field, resonant photon splitting can occur. If an optical
laser crosses a magnetic field of few Tesla with typical inhomogeneity scale of
the order of the meter, a potentially observable rate of photon splittings is
expected for the PVLAS range of couplings and masses.


title:
Angular correlations of lepton pairs from vector boson and top quark
  decays in Monte Carlo simulations

abstract:
  We explain how angular correlations in leptonic decays of vector bosons and
top quarks can be included in Monte Carlo parton showers, in particular those
matched to NLO QCD computations. We consider the production of $n$ pairs of
leptons, originating from the decays of $n$ electroweak vector bosons or of $n$
top quarks, in the narrow-width approximation. In the latter case, the
information on the $n$ $b$ quarks emerging from the decays is also retained. We
give results of implementing this procedure in MC@NLO


title: Introduction to leptogenesis

abstract:
  The discovery of neutrino masses makes leptogenesis a very attractive
scenario for explaining the puzzle of the baryon asymmetry of the Universe. We
present the basic ingredients of leptogenesis, explain the predictive power of
this scenario (and its limitations), and describe recent theoretical
developments.


title: Gravitino production in the Randall-Sundrum II braneworld cosmology

abstract:
  Braneworld modifications to the Friedmann expansion law can have an important
effect on the cosmological evolution of the early universe. In particular, the
primordial particle abundances crucially depend on the rate at which the
universe expanded at early times. In this article, we study the production of
stable and unstable gravitinos, both from thermal creation and from the decay
of a heavy scalar, in the Randall-Sundrum II braneworld context. We conclude
that, depending on the value of the 5D fundamental Planck mass, some of the
usual standard cosmology constraints on the reheating temperature and on the
mass of the heavy scalar can be evaded.


title: Heavy Quark Energy Loss Through Soft QCD Scattering in the QGP

abstract:
  A strong suppression of non-photonic electrons in Au+Au collisions is
observed at RHIC. This is in disagreement with the expected dominance of the
energy loss via gluon radiation, which predicts a much weaker suppression of
heavy flavours due to the dead cone effect. However, collisional energy loss is
also important, as demonstrated recently by the Soft Colour Interaction Jet
Quenching model. Based on this model we show that collisional energy loss of
charm quarks gives a suppression of electrons of the observed magnitude, but
the contribution from beauty decays, which dominates at intermediate and large
pT, results in a somewhat weaker overall suppression of electrons than
observed.


title:
Quark and Lepton Flavour Physics in the Littlest Higgs Model with
  T-Parity

abstract:
  The Littlest Higgs model with T-parity (LHT) contains new sources of flavour
and CP violation both in the quark and the lepton sector. They originate from
the interactions of ordinary fermions with mirror fermions mediated by new
gauge bosons: W_H, Z_H and A_H. The most spectacular departures from the
Standard Model are found in K_L -> pi^0 nu {bar nu}, K^+ -> pi^+ nu {bar nu},
in the CP-asymmetry S_{psi phi} and in lepton flavour violating decays. In
particular, the latter decays offer a clear distinction between the LHT model
and the MSSM. We summarize the most interesting results of three extensive
analyses of flavour physics in the LHT model.


title:
Electroweak corrections to the Drell-Yan process in the high dimuon mass
  range

abstract:
  The complete electroweak radiative O(\alpha) corrections to the Drell-Yan
process at large invariant dimuon mass have been studied. All formulas for the
cross sections and kinematical restrictions are presented in explicit form, for
the simplification of calculation and coding the theta- and delta-functions are
actively used. The FORTRAN code READY for the numerical analysis in the high
energy region corresponding to the future experiments at the CERN Large Hadron
Collider has been constructed. To simulate the detector acceptance we used the
standard CMS detector cuts. The radiative corrections are found to become large
at high dimuon mass M, the complete corrections at "bare" setup change the
dimuon mass distribution up to ~ -5.6% (-23.2%; -35.3%) at the LHC energy and
M=1 (3; 5)TeV.


title: Lattice QCD, Flavor Physics and the Unitarity Triangle Analysis

abstract:
  Lattice QCD has always played a relevant role in the studies of flavor
physics and, in particular, in the Unitarity Triangle (UT) analysis. Before the
starting of the B factories, this analysis relied on the results of lattice QCD
simulations to relate the experimental determinations of semileptonic B decays,
K-Kbar and B_{d,s}-B_{d,s}bar mixing to the CKM parameters. In the last years
much more information has been obtained from the direct determination of the UT
angles from non-leptonic B decays. In this talk, after a presentation of recent
averages of lattice QCD results, we compare the outcome of the "classical" UT
analysis (UTlattice) with the analysis based on the angles determinations
(UTangles). We discuss the role of the different determinations of Vub, and
show that current data do not favour the value measured in inclusive decays.
Finally we show that the recent measurement of Delta ms, combined with Delta md
and epsilonK, allows a quite accurate extraction of the values of the hadronic
parameters, BK, fBs*sqrt(B_Bs) and xi. These values, obtained "experimentally"
by assuming the validity of the Standard Model, are compared with the
theoretical predictions from lattice QCD.


title:
Thermal Dilepton Production from Dropping rho in the Vector
  Manifestation

abstract:
  We study the pion electromagnetic form factor and the dilepton production
rate in hot matter based on the vector manifestation (VM) of chiral symmetry in
which the massless vector meson becomes the chiral partner of the pion, giving
a theoretical framework of the dropping $\rho$ \^^ a la Brown-Rho scaling. The
VM predicts a strong violation of the vector dominance (VD) near the phase
transition point associated with the dropping $\rho$. We present the effect of
the VD violation to the dilepton production rate and make a comparison to the
one predicted by assuming the VD together with the dropping $\rho$.


title:
Susceptibilities and the Phase Structure of an Effective Chiral Model
  with Polyakov Loops

abstract:
  In the Nambu--Jona-Lasinio model with Polyakov loops, we explore the relation
between the deconfinement and chiral phase transitions within the mean-field
approximation. We focus on the phase structure of the model and study the
susceptibilities associated with corresponding order parameters.


title:
Manipulating a Neutrino Spectrum to Maximize the Physics Potential from
  a Low Energy Beta Beam

abstract:
  Proposed low energy beta beam facilities would be capable of producing
intense beams of neutrinos (anti-neutrinos) with well defined spectra. We
present analytic expressions and numerical results which accurately show how
the total neutrino flux reaching the detector depends on the geometry of the
source and the detector. Several authors have proposed measurements which
require using different flux shapes. We show that detectors of different sizes
and shapes will receive neutrino fluxes with different spectral shapes, and
that the spectral shape will also be different in different regions of the same
detector. Our findings also show that for certain measurements systematic
uncertainties and run time can be reduced.


title:
Gluon recombination in high parton density QCD: inclusive pion
  production

abstract:
  We argue that the collinear factorization of the fragmentation functions in
high energy hadron and nuclei collisions breaks down at transverse momenta kT <
Qs/g due to high parton densities in the colliding hadrons and/or nuclei. We
calculate, at next-to-leading order in projectile parton density and to all
orders in target parton density, the double-inclusive cross section for
production of a pair of gluons in the scalar J^(PC)=0^(++) channel. Using the
low energy theorems of QCD we find the inclusive cross section for pi-meson
production.


title: J/Psi Photoproduction in a Dual Model

abstract:
  J/Psi photoproduction is studied in the framework of the analytic S-matrix
theory. The differential and integrated elastic cross sections for J/Psi
photoproduction are calculated from a Dual Amplitude with Mandelstam
Analyticity. It is argued that at low energies, the background, which is the
low-energy equivalent of the high-energy diffraction replaces the Pomeron
exchange. The onset of the high energy Pomeron dominance is estimated from the
fits to the data.


title: Heavy ion collisions and AdS/CFT

abstract:
  We review some recent applications of the AdS/CFT correspondence to heavy ion
collisions including a calculation of the jet quenching parameter in N=4
super-Yang-Mills theory and quarkonium suppression from velocity scaling of the
screening length for a heavy quark-antiquark pair. We also briefly discuss
differences and similarities between QCD and N=4 Super-Yang-Mills theory.


title: pQCD Calculations of Heavy Quark and J/psi Production

abstract:
  We review the present status of theoretical predictions for both closed
(J/psi) and open heavy quark production in high energy collisions, and their
comparisons to experimental data.


abstract:
  We present the mini-proceedings of the workshop on ``Photoproduction at
collider energies: from RHIC and HERA to the LHC'' held at the European Centre
for Theoretical Studies in Nuclear Physics and Related Areas (ECT*, Trento)
from January 15 to 19, 2007. The workshop gathered both theorists and
experimentalists to discuss the current status of investigations of high-energy
photon-induced processes at different colliders (HERA, RHIC, and Tevatron) as
well as preparations for extension of these studies at the LHC. The main
physics topics covered were: (i) small-$x$ QCD in photoproduction studies with
protons and in electromagnetic (aka. ultraperipheral) nucleus-nucleus
collisions, (ii) hard diffraction physics at hadron colliders, and (iii)
photon-photon collisions at very high energies: electroweak and beyond the
Standard Model processes. These mini-proceedings consist of an introduction and
short summaries of the talks presented at the meeting.


title: Insight into Double-Pomeron-Exchange Higgs production and backgrounds

abstract:
  We quantify the central inclusive background contributions to exclusive Higgs
production at the LHC arising from double-Pomeron-exchange processes. We
consider the H --> bb(bar) signal. We study processes mediated by the fusion of
two `hard' Pomerons, and also by the fusion of `soft' Pomerons. The latter
background is found to be very small, and the former is found to be less than
the exclusive signal.


title: Scalar mesons in radiative \phi\to K^0\bar{K}^0\gamma decay

abstract:
  We study the radiative $\phi\to K^0\bar{K}^0\gamma$ decay within a
phenomenological framework by considering the contributions of the $f_{0}(980)$
and $a_{0}(980)$ scalar resonances. We calculate the branching ratio $B(\phi\to
K^0\bar{K}^0\gamma)$ by employing the coupling constants $g_{f_0K^{+}K^{-}}$
and $g_{a_0K^{+}K^{-}}$ as determined by different experimental groups.


title:
O(G_F^2 m_t^4) two-loop electroweak correction to Higgs-boson decay to
  bottom quarks

abstract:
  We analytically calculate the dominant two-loop electroweak correction, of
O(G_F^2 m_t^4), to the partial width of the decay of a Higgs boson, with mass
M_H << m_t, into a bottom-quark pair, and describe the most important
conceptual and technical details of our calculation. As a by-product of our
analysis, we also recover the O(alpha_s G_F m_t^2) correction. Relative to the
Born result, the O(G_F^2 m_t^4) correction turns out to be approximately
+0.047% and, thus, more than compensates the O(alpha_s G_F m_t^2) one, which
amounts to approximately -0.022%.


title: On the long-range correlations in hadron-nucleus collisions

abstract:
  Long-range correlations between multiplicities in different rapidity windows
in hadron-nucleus collisions are analyzed. After recalling the standard results
in the probabilistic model, we study them in the framework of perturbative QCD.
Considering interacting BFKL pomerons in the form of fan diagrams coupled to a
dilute projectile, analytic estimates are done for very large rapidities. The
correlation strength results weakly depending on energy and centrality or
nuclear size, and generically greater than unity. Finally, we turn to the Color
Glass Condensate framework. For a saturated projectile and considering the most
feasible experimental situation of forward and backward rapidity windows
symmetric around the center-of-mass, the resulting correlation strength turns
out to be larger than unity and shows a non-monotonic behavior with increasing
energy, first increasing and then decreasing to a limiting value. Its behavior
with increasing centrality or nuclear size depends on the considered rapidity
windows.


title:
On the structure of two-point Green-functions at next-to-leading order
  in 1/Nc

abstract:
  The structure of the two-point QCD Green-functions is studied in this note in
the limit of large number of colours. Their general form at next-to-leading
order in 1/Nc is derived keeping the infinite resonance summation and without
relying on a particular realization of the hadronic action. It is found that
the contributions from chiral operators without resonance fields of order p^4
or higher are irrelevant for the computation of the correlators and, hence,
they can be dropped at the beginning of the calculation. The possibility of a
more general cancelation of these local terms at the level of the generating
functional is discussed.


title: The Three Site Model at One-Loop

abstract:
  In this paper we compute the one-loop chiral logarithmic corrections to all
O(p^4) counterterms in the three site Higgsless model. The calculation is
performed using the background field method for both the chiral- and
gauge-fields, and using Landau gauge for the quantum fluctuations of the gauge
fields. The results agree with our previous calculations of the
chiral-logarithmic corrections to the S and T parameters in 't Hooft-Feynman
gauge. The work reported here includes a complete evaluation of all one-loop
divergences in an SU(2) x U(1) nonlinear sigma model, corresponding to an
electroweak effective Lagrangian in the absence of custodial symmetry.


title: Pion-pion and pion-proton correlations - new results from CERES

abstract:
  Results of a new two-particle correlation analysis of central Pb+Au collision
data at 158 GeV per nucleon are presented. The emphasis is put on pion-proton
correlations and on the dependence of the two-pion correlation radii on the
azimuthal emission angle with respect to the reaction plane.


title: Transport coefficients of Relativistic Causal Hydrodynamics for Hadrons

abstract:
  We investigate coefficients in the Israel-Stewart's causal hydrodynamics and
discuss the way to calculate them with a microscopic theory. Based on the
hadro-molecular simulation based on an event generator URASiMA, we evaluate the
coefficients for a hot and dense hadronic fluid.


title: Strangeness asymmetry of the nucleon in the statistical parton model

abstract:
  We extend to the strange quarks and antiquarks, the statistical approach of
parton distributions and we calculate the strange quark asymmetry $s-\bar s$.
We find that the asymmetry is small, positive in the low $x$ region and
negative in the high $x$ region. In this framework, the polarized strange
quarks and antiquarks distributions, which are obtained simultaneously, are
found to be both negative for all $x$ values.


title:
Longitudinal Polarization of Lambda and anti-Lambda Hyperons in
  Lepton-Nucleon Deep-Inelastic Scattering

abstract:
  We consider models for the spin transfers to $\Lambda$ and $\bar{\Lambda}$
hyperons produced in lepton-nucleon deep-inelastic scattering. We make
predictions for longitudinal $\Lambda$ and $\bar{\Lambda}$ spin transfers for
the COMPASS experiment and for HERA, and for the spin transfer to $\Lambda$
hyperons produced at JLAB. We demonstrate that accurate measurements of the
spin transfers to $\Lambda$ and $\bar{\Lambda}$ hyperons with COMPASS
kinematics have the potential to probe the intrinsic strangeness in the
nucleon. We show that a measurement of $\bar{\Lambda}$ polarisation could
provide a clean probe of the spin transfer from $\bar{s}$ quarks and provides a
new possibility to measure the antistrange quark distribution function. COMPASS
data in a domain of x that has not been studied previously will provide
valuable extra information to fix models for the nucleon spin structure. The
spin transfer to $\bar{\Lambda}$ hyperons, which could be measured by the
COMPASS experiment, would provide a new tool to distinguish between the SU(6)
and Burkardt-Jaffe (BJ) models for baryon spin structure. In the case of the
HERA electron-proton collider experiments with longitudinally-polarised
electrons, the separation between the target and current fragmentation
mechanisms is more clear. It provides a complementary probe of the strange
quark distribution and helps distinguish between the SU(6) and BJ models for
the $\Lambda$ and $\bar{\Lambda}$ spin structure. Finally, we show that the
spin transfer to $\Lambda$ hyperons measured in a JLAB experiment would be
dominated by the spin transfer of the intrinsic polarised-strangeness in the
remnant nucleon, providing an independent way to check our model predictions.


title: Revival of the Thermal Sneutrino Dark Matter

abstract:
  The left-handed sneutrino in the Minimal Supersymmetric Standard Model (MSSM)
has been ruled out as a viable thermal dark matter candidate, due to
conflicting constraints from direct detection experiments and from the
measurement of the dark matter relic density. The intrinsic fine-tuning problem
of the MSSM, however, motivates an extension with a new U(1)' gauge symmetry.
We show that in the U(1)'-extended MSSM the right-handed sneutrino becomes a
good thermal dark matter candidate. We identify two generic parameter space
regions where the combined constraints from relic density determinations,
direct detection and collider searches are all satisfied.


title: Effects of nucleus initialization on event-by-event observables

abstract:
  In this work we present a study of the influence of nucleus initializations
on the event-by-event elliptic flow coefficient, $v_2$. In most Monte-Carlo
models, the initial positions of the nucleons in a nucleus are completely
uncorrelated, which can lead to very high density regions. In a simple, yet
more realistic model where overlapping of the nucleons is avoided, fluctuations
in the initial conditions are reduced. However, $v_2$ distributions are not
very sensitive to the initialization choice.


title:
On the $\pi\pi$ contribution to the QCD sum rules for the light
  tetraquark

abstract:
  We perform a QCD sum rule analysis for the $f_0$ light tetraquark taking into
account the contribution arising from the two pion intermediate state. With the
interpolating currents of the different chiral combinations of scalar and
pseudoscalar diquarks, it is demonstrated that the interpolating current with
maximum chirality has a large coupling to the two pion state, but the current
with zero chirality interacts only weekly with this state. Taking into account
the form factor in the $f_0$--two pion vertex, it is shown that the
$f_0$--coupling to the two pion state leads to an increase of the lightest
tetraquark mass by a value of about 100 MeV. The analysis of the resulting sum
rule shows that the $\sigma(f_0(600))$--meson state might be treated as the
four--quark bound state in the instanton field which has a rather strong
coupling to the two pion state.


title: Short-range potentials from QCD at order $g^2$

abstract:
  We systematically compute the effective short-range potentials arising from
second order QCD-diagrams related to bound states of quarks, antiquarks, and
gluons. Our formalism relies on the assumption that the exchanged gluons are
massless, while the constituent gluons as well as the lightest quarks acquire a
nonvanishing constituent mass because of confinement. The potentials we obtain
include the first relativistic corrections, thus spin-spin terms, spin-orbit
terms, etc. Such effective potentials are expected to be relevant for the
building of accurate potential models describing usual hadrons as well as
exotic ones like glueballs and $q\bar q g$ hybrids. In particular, we compute
for the first time an effective quark-gluon potential, and show the existence
of a quadrupolar interaction term in this case. We also discuss the influence
of a possible nonzero mass for the exchanged gluons.


title: Following Gluonic World Lines to Find the QCD Coupling in the Infrared

abstract:
  Using a parametrization of the Wilson loop with the minimal-area law, we
calculate the polarization operator of a valence gluon, which propagates in the
confining background. This enables us to obtain the infrared freezing (i.e.
finiteness) of the running strong coupling in the confinement phase, as well as
in the deconfinement phase up to the temperature of dimensional reduction. The
momentum scale defining the onset of freezing is found both analytically and
numerically. The nonperturbative contribution to the thrust variable,
originating from the freezing, makes the value of this variable closer to the
experimental one.


title:
Scalar and Spinor Particles with Low Binding Energy in the Strong
  Stationary Magnetic Field Studied by Means of Two-and Three-Dimensional
  Models

abstract:
  On the basis of analytic solutions of Schrodinger and Pauli equations for a
uniform magnetic field and a single attractive $\delta({\bf r})$-potential the
equations for the bound one-active electron states are discussed. It is vary
important that ground electron states in the magnetic field essentially
different from the analog state of spin-0 particles that binding energy has
been intensively studied at more then forty years ago. We show that binding
energy equations for spin-1/2 particles can be obtained without using of a
well-known language of boundary conditions in the model of $\delta$-potential
that has been developed in pioneering works. Obtained equations are used for
the analytically calculation of the energy level displacements, which
demonstrate nonlinear dependencies on field intensities. It is shown that in a
case of the weak intensity a magnetic field indeed plays a stabilizing role in
considering systems. However the strong magnetic field shows the opposite
action. We are expected that these properties can be of importance for real
quantum mechanical fermionic systems in two- and three-dimensional cases.


title:
The running mass $m_s$ at low scalefrom the heavy-light meson decay
  constants

abstract:
  It is shown that a 25(20)% difference between the decay constants
$f_{D_s}(f_{B_s})$ and $f_D(f_B)$ occurs due to large differences in the pole
masses of the $s$ and $d(u)$ quarks. The values $\eta_D =f_{D_s}/f_D\approx
1.23(15)$, recently observed in the CLEO experiment, and
$\eta_B=f_{B_s}/f_B\approx 1.20$, obtained in unquenched lattice QCD, can be
reached only if the running mass $m_s$ at low scale is $m_s(\sim 0.5 $ GeV)$=
170 - 200$ MeV. Our results follow from the analytical expression for the
pseudoscalar decay constant $f_{\rm P}$ based on the path-integral
representation of the meson Green's function.


title:
Bose-Einstein condensation in linear sigma model at Hartree and large N
  approximation

abstract:
  The BEC of charged pions is investigated in the framework of O(4) linear
sigma model. By using Cornwall-Jackiw-Tomboulis formalism, we have derived the
gap equations for the effective masses of the mesons at finite temperature and
finite isospin density. The BEC is discussed in chiral limit and non-chiral
limit at Hartree approximation and also at large N approximation.


title:
Phase transitions in quark matter and behaviour of physical observables
  in the vicinity of the critical end point

abstract:
  We study the chiral phase transition at finite $T$ and $\mu_B$ within the
framework of the SU(3) Nambu-Jona-Lasinio (NJL) model. The QCD critical end
point (CEP) and the critical line at finite temperature and baryonic chemical
potential are investigated: the study of physical quantities, such as the
baryon number susceptibility near the CEP, will provide complementary
information concerning the order of the phase transition. We also analyze the
information provided by the study of the critical exponents around the CEP.


title:
Behavior of physical observables in the vicinity of the QCD critical end
  point

abstract:
  Using the SU(3) Nambu-Jona-Lasinio (NJL) model, we study the chiral phase
transition at finite $T$ and $\mu_B$. Special attention is given to the QCD
critical end point (CEP): the study of physical quantities, as the pressure,
the entropy, the baryon number susceptibility and the specific heat near the
CEP, will provide complementary information concerning the order of the phase
transition. We also analyze the information provided by the study of the
critical exponents around the CEP.


title: The current problems of the minimal SO(10) GUT and their solutions

abstract:
  This talk consists of two parts. In part I we review how the minimal
renormalizable supersymmetric SO(10) model, an SO(10) framework with only one
10 and one 126 Higgs multiplets in the Yukawa sector, is attractive because of
its highly predictive power. Indeed it not only gives a consistent predictions
on neutrino oscillation data but also gives reasonable and interesting values
for leptogenesis, LFV, muon g-2, neutrinoless double beta decay etc. However,
this model suffers from problems related to running of gauge couplings. The
gauge coupling unification may be spoiled due to the presence of Higgs
multiplets much lighter than the grand unification (GUT) scale. In addition,
the gauge couplings blow up around the GUT scale because of the presence of
Higgs multiplets of large representations. In part II we consider the minimal
SO(10) model in the warped extra dimension and show a possibility to solve
these problems.


title: Electroweak observables in a general 5D background

abstract:
  Warped extra dimensions provide a new playground to study electroweak
brea-king and the nature of the higgs field. In this paper we reanalyze the
electroweak observables in theories with one extra dimension and a completely
general warp factor. We demonstrate that, regardless of the 5D background,
SU(2)_R is needed in order to avoid excessive contributions to the T parameter.
For higgsless theories cancelations between different contributions to the S
parameter are needed.


title: B-Hadron Lifetimes, Width Differences and Semileptonic CP-Asymmetries

abstract:
  B-hadron physics plays a fundamental role to test and improve our
understanding of flavor dynamics within and beyond the Standard Model. Of
particular phenomenological interest are beauty hadron lifetime ratios and,
width differences and semileptonic CP-asymmetries in B_d and B_s systems. We
discuss their theoretical predictions which, in the last years, have been
improved thanks to accurate lattice calculations of operator matrix elements
and perturbative computations of Wilson coefficients.


title: The Matrix Reloaded - on the Dark Energy Seesaw

abstract:
  We propose a novel mechanism for dark energy, based on an extended seesaw for
scalar fields, which does not require any new physics at energies below the TeV
scale. A very light quintessence mass is usually considered to be technically
unnatural, unless it is protected by some symmetry broken at the new very light
scale. We propose that one can use an extended seesaw mechanism to construct
technically natural models for very light fields, protected by SUSY softly
broken above a TeV.


title: On Polarization Of The Beam Extracted With The Bent Crystal

abstract:
  Particles scattered off the nuclear target acquire a polarization if the
nuclei have a non zero analyzing power. This effect is enhanced when particles
traverse a bent crystal. Such enhancement under certain assumptions allows one
to measure the analyzing power at the level of 10^-4 at the square of transfer
momentum |t| < 10^-5 (GeV/c)2. If it happens that the analyzing power is big
enough, then one can get the beam polarization more than 50% after extraction
of the primary beam with the bent crystal.


title:
Confronting models on cosmic ray interactions with particle physics at
  LHC energies

abstract:
  Inelastic pp collisions are dominated by soft (low momentum transfer) physics
where perturbative QCD cannot be fully applied. A deep understanding of both
soft and semi-hard processes is crucial for predictions of minimum bias and
underlying events of the now coming on line pp Large Hadron Collider (LHC).
Moreover, the interaction of cosmic ray particles entering in the atmosphere is
extremely sensitive to these soft processes and consequently cannot be
formulated from first principles. Because of this, air shower analyses strongly
rely on hadronic interaction models, which extrapolate collider data several
orders of magnitude. A comparative study of Monte Carlo simulations of pp
collisions (at the LHC center-of-mass energy ~ 14 TeV) using the most popular
hadronic interaction models for ultrahigh energy cosmic ray (SIBYLL and QGSJET)
and for collider physics (the PYTHIA multiparton model) is presented. The most
relevant distributions are studied including those observables from diffractive
events with the aim of discriminating between the different models.


title:
Relativistic corrections to $J/\psi$ exclusive and inclusive double
  charm production at B factories

abstract:
  In order to clarify the puzzling problems in double charm production,
relativistic corrections at order $v^{2}$ to the processes $e^{+}e^{-}\to
J/\psi+\eta_{c}$ and $e^{+}e^{-}\to J/\psi+c\bar{c}$ at B factories are studied
in non-relativistic quantum chromodynamics. The short-distance parts of
production cross sections are calculated perturbatively, while the
long-distance matrix elements are estimated from $J/\psi$ and $\eta_c$ decays
up to errors of order $v^4$. Our results show that the relativistic correction
to the exclusive process $e^{+}e^{-}\to J/\psi+\eta_{c}$ is significant, which,
when combined together with the next-to-leading order $\alpha_{s}$ corrections,
could resolve the large discrepancy between theory and experiment; whereas for
the inclusive process $e^{+}e^{-}\to J/\psi+c\bar{c}$ the relativistic
correction is tiny and negligible. The physical reason for the above difference
between exclusive and inclusive processes largely lies in the fact that in the
exclusive process the relative momentum between quarks in charmonium
substantially reduces the virtuality of the gluon that converts into a charm
quark pair, but this is not the case for the inclusive process, in which the
charm quark fragmentation $c\to J/\psi+c$ is significant, and QCD radiative
corrections can be more essential.


title: Testing Time-Reversal: Lambda_b Decays into Polarized Resonances

abstract:
  Weak decays of beauty baryons like Lambda_b into Lambda V(J^P=1^-), where the
produced resonances are polarized, offer interesting opportunity to perform
tests of Time-Reversal Invariance. This paper emphasizes the particular role of
the resonance polarization-vectors and their physical properties by symmetry
transformations. In particular, it is shown that the normal component of a
polarization-vector, as defined in the Jackson's frame, is Lorentz invariant
and could get large values, notably in the case of J/psi production.


title: String Effects on Fermi--Dirac Correlation Measurements

abstract:
  We investigate some recent measurements of Fermi--Dirac correlations by the
LEP collaborations indicating surprisingly small source radii for the
production of baryons in $e^+e^-$-annihilation at the $Z^0$ peak. In the
hadronization models there are besides the Fermi--Dirac correlation effect also
a strong dynamical (anti-)correlation. We demonstrate that the extraction of
the pure FD effect is highly dependent on a realistic Monte Carlo event
generator, both for separation of those dynamical correlations which are not
related to Fermi--Dirac statistics, and for corrections of the data and
background subtractions. Although the model can be tuned to well reproduce
single particle distributions, there are large model-uncertainties when it
comes to correlations between identical baryons. We therefore, unfortunately,
have to conclude that it is at present not possible to make any firm conclusion
about the source radii relevant for baryon production at LEP.


title: Explicit CP Violation in the MSSM Through Higgs --> gamma.gamma

abstract:
  The MSSM with explicit CP violation is studied through the di-photon decay
channel of the lightest neutral Higgs boson. Through the leading one-loop order
H1 --> gammar.gamma is affected by a large number of Higgs-sparticle couplings,
which could be complex. Our preliminary scan over the Supersymmetric parameter
space shows that more than 50% average deviations are possible, in either
direction, in the corresponding branching ratio, with respect to the case of
the CP-conserving MSSM. In particular, our analysis shows that in the presence
of a light stop (with mass ~ 200 GeV) a CP-violating phase Arg(mu) ~ 90(deg)
can render the H1 --> gamma.gamma branching ratio more than 10 times larger,
for suitable combinations of the other MSSM parameters.