title: Split Light Higgsino from Split Supersymmetry

abstract:
  New version of MSSM scales is discussed. In this version mu << M_{SUSY} ~ M_0
\~ M_{1/2}, where mu is the Higgsino mass, M_0 is the mass scale of sleptons
and squarks, M_{1/2} is the mass scale of gaugino. Renormalization group
motivation of this MSSM version is proposed. Analysis of Split Supersymmetry
ideas in this case together with the Dark Matter arguments results in the
statement that the formation of residual neutralino concentration occurs in the
high symmetric phase of cosmological plasma. The value of Higgsino mass is
estimated. The recharging process for high energy neutralinos in the
neutralino-nucleus scattering is considered. There has been reported the
possibility to check-up of the model predictions at modern experimental
facilities NUSEL and GLAST.


title: Perturbative Odderon in the Color Glass Condensate

abstract:
  We discuss the "odderon" exchange at high energy within the framework of the
Color Glass Condensate.


title: Glueballs and the Pomeron -- a Lattice Study

abstract:
  We perform lattice calculations of the lightest J=0,2,4,6 glueball masses in
the D=3+1 SU(3) gauge theory and extrapolate to the continuum limit. Assuming
that these masses lie on linear Regge trajectories we find a leading glueball
trajectory alpha(t) = 0.93(24) + 0.28(2)alpha_R' t, where alpha_R' \simeq 0.9
{GeV}^{-2} is the slope of the usual mesonic Regge trajectories. This glueball
trajectory has an intercept and slope similar to that of the Pomeron. We
contrast this with the situation in D=2+1 where the leading glueball Regge
trajectory is found to have too small an intercept to be important for
high-energy cross-sections. We attempt to interpret the observed states and
trajectories in terms of open and closed string models of glueballs.


title: Strong decays of $D_{sJ}(2317)$ and $D_{sJ}(2460)$

abstract:
  With the identification of ($D_{sJ}(2317), D_{sJ}(2460)$) as the ($0^+$,
$1^+$) doublet in the heavy quark effective field theory, we derive the light
cone QCD sum rule for the coupling of eta meson with $D_{sJ}(2317) D_s $ and
$D_{sJ}(2460) D_s^{*} $. Through $\eta-\pi^0$ mixing we calculate their pionic
decay widths, which are consistent with the experimental values (or upper
limits). Combining the radiative decay widths derived by Colangelo, Fazio and
Ozpineci in the same framework, we conclude that the decay patterns of
$D_{sJ}(2317, 2460)$ strongly support their interpretation as ordinary $c \bar
s$ mesons.


title:
Coulomb and hadronic scattering in elastic high-energy nucleon
  collisions

abstract:
  The commonly used West and Yennie model approach to the description of the
interference between Coulomb and hadronic scattering of nucleons is critically
examined and its deficiencies are clarified. The preference of the more general
eikonal model approach is summarized.


title:
One-loop Renormalization of Resonance Chiral Theory: Scalar and
  Pseudoscalar Resonances

abstract:
  We consider the Resonance Chiral Theory with one multiplet of scalar and
pseudoscalar resonances, up to bilinear couplings in the resonance fields, and
evaluate its beta-function at one-loop with the use of the background field
method. Thus we also provide the full set of operators that renormalize the
theory at one loop and render it finite.


title:
Dark matter search by exclusive studies of X-rays following WIMPs
  nuclear interactions

abstract:
  It is shown that weakly interacting massive particles (WIMPs), which are
possible cold dark matter candidates, can be studied by exclusive measurements
of X-rays following WIMPs nuclear interactions. Inner-shell atomic electrons
are ionized through WIMP-nuclear interaction, and then mono-energetic X-rays
are emitted when they are filled by outer-shell electrons. The number of
inner-shell holes amounts to as large as one per five nuclear recoils for
K-shell and several per recoil for L-shell in the case of medium heavy target
nuclei interacting with 100-300 GeV WIMPs. Then the K and L X-ray peaks show up
in the 5-50 keV region. Consequently exclusive studies of the X-rays in
coincidence with the nuclear recoils and the ionization electrons are found to
provide excellent opportunities to detect WIMPs such as the Lightest Super
Symmetric Particles (LSP)


title: Higgs Production via Gluon Fusion with $K_T$ Factorization

abstract:
  We consider the Higgs boson production at high energy hadron colliders in the
framework of the $k_T$-factorization approach. The attention is focused on the
dominant gluon-gluon fusion subprocess. We show that $k_T$-factorization gives
a possibility to investigate the associated Higgs boson and jets production.


title: Fermionic Quasiparticles in QCD at High Baryon Density

abstract:
  We study fermionic quasi-particles in QCD at very high baryon density. In the
normal quark matter phase unscreened magnetic gluon exchanges lead to non-Fermi
liquid behavior. Non-Fermi liquid effects manifest themselves in low energy
Green functions that depend on logarithms and fractional powers of energy. In
the superfluid phase there is an energy gap for fermionic excitations. Quark
mass effects can cause the energy gap to vanish. Gapless fermions in the color
flavor locked phase cause an instability towards a state with a non-zero
supercurrent.


title: Determining neutralino parameters in Left-Right Supersymmetric Models

abstract:
  We report exact analytical expressions relating the fundamental parameters
describing the neutralino sector in the context of the left-right
supersymmetric model. The method used for such a effects is the projector
formalism deduced without take into account the Jarlskog's projector formulae.
Also, expressions for the neutralino masses and the neutralino mixing matrix
are determined . The results are compared with numerical and analytical ones
obtained in similar scenarios in the context of the minimal supersymmetric
standard model.


title: Different Aspects of BFKL at NLL

abstract:
  Progress in the understanding of the BFKL approach in the NLL approximation
is reported. The study based on the iteration of the kernel using the
exponentiation of the gluon Regge trajectory is reviewed in QCD and N=4 super
Yang-Mills theories. Properties of the gluon Green's function in the high
energy Regge limit for forward and non-forward scattering are considered. A
novel representation of collinearly improved kernels is also presented.


title: More Remarks on High Energy Evolution

abstract:
  We discuss several issues related to recent work on high energy evolution. In
particular we show that the Hilbert space for action of the operator of the
evolution can be conveniently defined by the space of weight functional
introduced recently in \cite{kl4}. These weight functionals automatically
implement the correct properties of the charge density correlators, thus
eliminating the need in explicit introduction of the Wess Zumino term. We also
discuss various aspects of Dense Dilute Duality in the toy dipole model.


title:
Prospects For Detecting Dark Matter With Neutrino Telescopes In Light Of
  Recent Results From Direct Detection Experiments

abstract:
  Direct detection dark matter experiments, lead by the CDMS collaboration,
have placed increasingly stronger constraints on the cross sections for elastic
scattering of WIMPs on nucleons. These results impact the prospects for the
indirect detection of dark matter using neutrino telescopes. With this in mind,
we revisit the prospects for detecting neutrinos produced by the annihilation
of WIMPs in the Sun. We find that the latest bounds do not seriously limit the
models most accessible to next generation kilometer-scale neutrino telescopes
such as IceCube. This is largely due to the fact that models with significant
spin-dependent couplings to protons are the least constrained and, at the same
time, the most promising because of the efficient capture of WIMPs in the Sun.
We identify models where dark matter particles are beyond the reach of any
planned direct detection experiments while within reach of neutrino telescopes.
In summary, we find that, even when contemplating recent direct detection
results, neutrino telescopes still have the opportunity to play an important as
well as complementary role in the search for particle dark matter.


title:
Response of strongly-interacting matter to magnetic field: some exact
  results

abstract:
  We derive some exact results concerning the response of strongly-interacting
matter to external magnetic fields. Our results come from consideration of
triangle anomalies in medium. First, we define an "axial magnetic
susceptibility," then we examine its beahvior in two flavor QCD via response
theory. In the chirally restored phase, this quantity is proportional to the
fermion chemical potential, while in the phase of broken chiral symmetry it can
be related, through triangle anomalies, to an in-medium amplitude for the
neutral pion to decay to two photons. We confirm the latter result by
calculation in a linear sigma model, where this amplitude is already known in
the literature.


title: Heavy-Quark Spectra at RHIC and Resonances in the QGP

abstract:
  Thermalization and collective flow of charm (c) and bottom (b) quarks are
evaluated from elastic parton scattering via "D"- and "B"-meson resonances in
an expanding, strongly interacting quark-gluon plasma at RHIC. Pertinent drag
and diffusion coefficients are implemented into a relativistic Langevin
simulation to compute transverse-momentum spectra and azimuthal flow
asymmetries (v_2) of c- and b-quarks. Upon hadronization (including coalescence
and fragmentation) and semileptonic D- and B-decays, the resulting electron
spectra (R_{AA} and v_2) are compared to recent RHIC data.


title: alpha ~ pi/2 from supersymmetric spontaneous flavor breaking

abstract:
  We propose a flavor model where both CP and flavor symmetries are broken at
the supersymmetric level. The model is an effective SU(5) theory based on a
U(2) horizontal symmetry. The minimum of the supersymmetric scalar potential
can be solved to yield a realistic pattern of charged fermion masses. The Higgs
sector contains a symmetric, an antisymmetric and two vector fields, plus their
U(2) conjugates. These Higgs fields are the only fields strictly required to
break the flavor and CP symmetries and generate masses for all charged fermions
including the up-quark. The model predicts the existence of an absolute minimum
in the space of CP-phases. The value alpha ~ pi/2 is predicted in a particular
limit of the parameter space of the model.


title:
Non-Perturbative Quark-Antiquark Production From a Constant
  Chromo-Electric Field via the Schwinger Mechanism

abstract:
  We obtain an exact result for the non-perturbative quark (antiquark)
production rate and its p_T distribution from a constant SU(3) chromo-electric
field E^a with arbitary color index $a$ by directly evaluating the path
integral. Unlike the WKB tunneling result, which depends only on one gauge
invariant quantity |E|, the strength of the chromo-electric field, we find that
the exact result for the p_T distribution for quark (antiquark) production rate
depends on two independent Casimir (gauge) invariants, E^aE^a and
[d_{abc}E^aE^bE^c]^2.


title:
Violation of kT factorization in quark production from the Color Glass
  Condensate

abstract:
  We examine the violation of the kT factorization approximation for quark
production in high energy proton-nucleus collisions. We comment on its
implications for the open charm and quarkonium production in collider
experiments.


title:
Constraint on the heavy sterile neutrino mixing angles in the SO(10)
  model with double see-saw mechanism

abstract:
  Constraints on the heavy sterile neutrino mixing angles are studied in the
framework of a minimal supersymmetric ${\rm SO}(10)$ model with {\it double
see-saw mechanism}. A new singlet matter in addition to the right-handed
neutrinos is introduced to realize the double see-saw mechanism. The minimal
${\rm SO}(10)$ model gives an unambiguous Dirac neutrino mass matrix, which
enables us to predict the masses and the mixing angles in the enlarged $9
\times 9$ neutrino mass matrix. Mixing angles between the light Majorana
neutrinos and the heavy sterile neutrinos are shown to be within the LEP
experimental bound on all ranges of the Majorana phases.


title:
Bound State versus Collective Coordinate Approaches in Chiral Soliton
  Models and the Width of the $\Theta^+$ Pentaquark

abstract:
  We thoroughly compare the bound state and rigid rotator approaches to
three--flavored chiral solitons. We establish that these two approaches yield
identical results for the baryon spectrum and kaon--nucleon $S$--matrix in the
limit that the number of colors ($N_C$) tends to infinity. After proper
subtraction of the background phase shift the bound state approach indeed
exhibits a clear resonance behavior in the strangeness $S=+1$ channel. We
present a first dynamical calculation of the widths of the $\Theta^+$ and
$\Theta^*$ pentaquarks for finite $N_C$ in a chiral soliton model.


title:
One-loop Renormalization of Resonance Chiral Theory with Scalar and
  Pseudoscalar Resonances

abstract:
  The divergent part of the generating functional of the Resonance Chiral
Theory is evaluated up to one loop when one multiplet of scalar an pseudoscalar
resonances are included and interaction terms which couple up to two resonances
are considered. Hence we obtain the renormalization of the couplings of the
initial Lagrangian and, moreover, the complete list of operators that make this
theory finite, at this order.


title: GiNaC - Symbolic computation with C++

abstract:
  We give an introduction to the C++ library GiNaC, which extends the C++
language by new objects and methods for the representation and manipulation of
arbitrary symbolic expressions.


title: Verification of Z-scaling in pp Collisions at RHIC

abstract:
  New experimental data on inclusive spectra of identified particles produced
in pp collisions at the RHIC are used to test z-scaling. Energy and
multiplicity independence of the scaling function is established. The RHIC data
confirm z-scaling observed at U70, ISR, SpS and Tevatron energies. The obtained
results are of interest to search for new physics phenomena of particle
production in high transverse momentum and high multiplicity region at RHIC,
Tevatron and LHC.


title: Tensor charge and anomalous magnetic moment correlation

abstract:
  We propose a generalization of the upgraded Karl- Sehgal formula which
relates baryon magnetic moments to the spin structure of constituent quarks, by
adding anomalous magnetic moments of quarks. We first argue that relativistic
nature of quarks inside baryons requires introduction of two kinds of
magnetisms, one axial and the other tensoriel. The first one is associated with
integrated quark helicity distributions (standard) and the second with
integrated transversity distributions . The weight of each contribution is
controlled by the combination of two parameters, xi the ratio of the quark mass
to the average kinetic energy Ei and ai the quark anomalous magnetic moment.
The quark anomalous magnetic moment is correlated to transversity and both are
necessary ingredients in describing relativistic quarks. The proposed formula,
then when confronted with baryon magnetic moments data with reasonable inputs,
yields beside quark magnetic densities, anomalous magnetic moments enough large
to not be ignored.


title: Inclusive decays \chi_{b0,2}->\psi D\bar D+X and the duality relation

abstract:
  In this article we consider the three-particle decays $\chi_{b0,2}\to J/\psi
c\bar c\to J/\psi D\bar D+X$. We present the analytical formulae for the
differential widths of these decays, the numerical values of their integrated
widths and check the duality relation that connects the decays
$\chi_{b0,2}\to\psi c\bar c$ with the two-particle decays $\chi_{b0,2}\to
J/\psi (c\bar c)$. We also study the possibility of observing the
$\chi_{b0,2}\to J/\psi DD+X$ mode at Tevatron and LHC colliders.


title: Contrasting the anomalous and the SM-MSSM couplings at the Colliders

abstract:
  This talk consists of two parts. In the first, the present experimental
bounds on the anomalous couplings of the gauge bosons, based mainly on the LEP
and Tevatron experiments, are reviewed. In the second part, the theorem of
helicity conservation (HC) is presented, which should be valid in either the
Standard Model (SM) or MSSM, for any two-body process at high energies and
fixed angles. The energy-range for the HC validity is discussed and, under
certain conditions, it should well be within the LHC or ILC range.
  Since all known anomalous couplings violate HC, its testing may provide a way
for generically identifying the possible presence of anomalous
(non-renormalizable) contributions.


title: RHIC results from LHC perspectives

abstract:
  RHIC data opens new ways of characterizing the medium created in a heavy ion
collision by measuring particles with high transverse momentum. In addition to
the observation of the predicted jet quenching, the new data on particle
correlations indicate that a strong modification of the jet-like shapes is
driven by the dynamical properties of the medium. I will review the lessons we
are learning from RHIC and outline some new directions which could become of
primary importance at the LHC.


title: CSW Diagrams and Electroweak Vector Bosons

abstract:
  Based on the joined work performed together with Z. Bern, D. Forde, and D.
Kosower [1], in this talk it is recalled the (twistor-motivated) diagrammatic
formalism describing tree-level scattering amplitudes presented by Cachazo,
Svr\v{c}ek and Witten, and it is discussed an extension of the vertices and
accompaining rules to the construction of vector-boson currents coupling to an
arbitrary source.


title: The Minimal Model for Dark Matter and Unification

abstract:
  Gauge coupling unification and the success of TeV-scale weakly interacting
dark matter are usually taken as evidence of low energy supersymmetry (SUSY).
However, if we assume that the tuning of the higgs can be explained in some
unnatural way, from environmental considerations for example, SUSY is no longer
a necessary component of any Beyond the Standard Model theory. In this paper we
study the minimal model with a dark matter candidate and gauge coupling
unification. This consists of the SM plus fermions with the quantum numbers of
SUSY higgsinos, and a singlet. It predicts thermal dark matter with a mass that
can range from 100 GeV to around 2 TeV and generically gives rise to an
electric dipole moment that is just beyond current experimental limits, with a
large portion of its allowed parameter space accessible to next generation EDM
and direct detection experiments. We study precision unification in this model
by embedding it in a 5-D orbifold GUT where certain large threshold corrections
are calculable, achieving gauge coupling and b-tau unification, and predicting
a rate of proton decay just beyond current limits.


title:
Devaluation: a dynamical mechanism for a naturally small cosmological
  constant

abstract:
  We propose a natural solution to the cosmological constant problem consistent
with the standard cosmology and successful over a broad range of energies. This
solution is based on the existence of a new field, the devaluton, with its
potential modeled on a tilted cosine. After inflation, the universe reheats and
populates the devaluton's many minima. As the universe cools, domain walls form
between different regions. The domain wall network then evolves and sweeps away
regions of higher vacuum energy in favor of lower energy ones. Gravitation
itself provides a cutoff at a minimum vacuum energy, thus leaving the universe
with a small cosmological constant comparable in magnitude to the present day
dark energy density.


title:
Gauge independent approach to chiral symmetry breaking in a strong
  magnetic field

abstract:
  The gauge independence of the dynamical fermion mass generated through chiral
symmetry breaking in QED in a strong, constant external magnetic field is
critically examined. We show that the bare vertex approximation, in which the
vertex corrections are ignored, is a consistent truncation of the
Schwinger-Dyson equations in the lowest Landau level approximation. The
dynamical fermion mass, obtained as the solution of the truncated
Schwinger-Dyson equations evaluated on the fermion mass shell, is shown to be
manifestly gauge independent. By establishing a direct correspondence between
the truncated Schwinger-Dyson equations and the 2PI (two-particle-irreducible)
effective action truncated at the lowest nontrivial order in the loop expansion
as well as in the 1/N_f expansion (N_f is the number of fermion flavors), we
argue that in a strong magnetic field the dynamical fermion mass can be
reliably calculated in the bare vertex approximation.

categories: hep-ph astro-ph cond-mat.mes-hall hep-th


title: Information theory point of view on multiparticle production processes

abstract:
  We review hitherto attempts to look at the multiparticle production processes
from the Information Theory point of view (both in its extensive and
nonextensive versions).


title:
Ferromagnetism in quark matter and origin of the magnetic field in
  compact stars

abstract:
  Two magnetic aspects of quark matter, ferromagnetism and spin density wave,
are discussed in the temperature-density plane. Some implications of
ferromagnetism are suggested on relativistic heavy-ion collisions and compact
stars.


title: Gauge dependence of fermion mass renormalization schemes

abstract:
  We discuss the gauge dependence of fermion mass definition and physical
result under the conventional on-shell mass renormalization scheme and the
recently proposed pole mass renormalization scheme in standard model. By the
two-loop calculations of top quark's mass counterterm and the cross section of
physical process $W^{-}W^{+}\to b\bar{b}$ we strictly prove that the on-shell
mass renormalization scheme makes fermion mass definition and the physical
result gauge dependent at the first time, while we don't find such gauge
dependence in the pole mass renormalization scheme. Besides, our calculation
also shows the difference of the physical result between the two mass
renormalization schemes cannot be neglected at two-loop level.


title: Charged Higgs Boson Search at the LHC

abstract:
  This review starts with a brief introduction to the charged Higgs boson
$(H^\pm)$ in the Minimal Supersymmetric Standard Model (MSSM). It then
discusses the prospects of a relatively light $H^\pm$ boson search via top
quark decay and finally a heavy $H^\pm$ boson search at LHC. The viable
channels for $H^\pm$ search are discussed, with particular emphasis on the
$H^\pm -> tau+nu$ decay channel.


title:
Chiral Mass Splitting for c \bar{s} and c \bar{n} Mesons in the
  \tilde{U}(12)-Classification Scheme of Hadrons

abstract:
  We investigate the chiral mass splitting of parity-doubled J=0,1 states for c
\bar{s} and c \bar{n} meson systems in the \tilde{U}(12)_{SF}-classification
scheme of hadrons, using the linear sigma model to describe the light-quark
pseudoscalar and scalar mesons together with the spontaneous breaking of chiral
symmetry, and consequently predict the masses of as-yet-unobserved
(0^{+},1^{+}) c \bar{n} mesons. We also mention some indications of their
existence in the recent published data from the Belle and BABAR Collaborations.


title: Dark Energy and Its Interactions with Neutrinos

abstract:
  In this talk I will firstly review on the current constraints on the equation
of state of the dark energy from observational data, then present a new
scenario of dark energy dubbed {\it Quintom}. The recent fits to the type Ia
supernova data and the cosmic microwave background and so on in the literature
find that the behavior of dark energy is to great extent in consistency with a
cosmological constant, however the dynamical dark energy scenarios are
generally not ruled out, and one class of models with an equation of state
transiting from below -1 to above -1 as the redshift increases is mildly
favored. The second part of the talk is on interacting dark energy. I will
review briefly on the models of neutrino dark energy.


title:
Study of Strangeness Condensation by Expanding About the Fixed Point of
  the Harada-Yamawaki Vector Manifestation

abstract:
  Building on, and extending, the result of a higher-order in-medium chiral
perturbation theory combined with renormalization group arguments and a variety
of observations of the vector manifestation of Harada-Yamawaki hidden local
symmetry theory, we obtain a surprisingly simple description of kaon
condensation by fluctuating around the "vector manifestation (VM)" fixed point
identified to be the chiral restoration point. Our development establishes that
strangeness condensation takes place at about 3 n_0 where n_0 is nuclear matter
density. This result depends only on the renoramlization-group (RG) behavior of
the vector interactions, other effects involved in fluctuating about the bare
vacuum in so many previous calculations being "irrelevant" in the RG about the
fixed point. Our results have major effects on the collapse of neutron stars
into black holes.


title: Test of lepton flavour violation at LHC

abstract:
  We study lepton flavour violating decays of neutralinos and sleptons within
the Minimal Supersymmetric Standard Model, assuming two and three generation
mixings in the slepton sector. We take into account the most recent bounds on
flavour violating rare lepton decays. Taking the SPS1a' scenario as an example,
we show that some of the lepton flavour violating branching ratios of
neutralinos and sleptons can be sizable (~ 5-10%). We study the impact of the
lepton flavour violating neutralino and slepton decays on the di-lepton mass
distributions measured at LHC. We find that they can result in novel and
characteristic edge structures in the distributions. In particular, double-edge
structures can appear in the e tau and mu tau mass spectra if ~tau_1 is the
lightest slepton. The appearance of these remarkable structures provides a
powerful test of supersymmetric lepton flavour violation at LHC.


title: Partially composite two-Higgs doublet model

abstract:
  In the extra dimensional scenarios with gauge fields in the bulk, the
Kaluza-Klein (KK) gauge bosons can induce Nambu-Jona-Lasinio (NJL) type
attractive four-fermion interactions, which can break electroweak symmetry
dynamically with accompanying composite Higgs fields. We consider a possibility
that electroweak symmetry breaking (EWSB) is triggered by both a fundamental
Higgs and a composite Higgs arising in a dynamical symmetry breaking mechanism
induced by a new strong dynamics. The resulting Higgs sector is a partially
composite two-Higgs doublet model with specific boundary conditions on the
coupling and mass parameters originating at a compositeness scale $\Lambda$.
The phenomenology of this model is discussed including the collider
phenomenology at LHC and ILC.


title:
Using high-power lasers for detection of elastic photon-photon
  scattering

abstract:
  The properties of four-wave interaction via the nonlinear quantum vacuum is
investigated. The effect of the quantum vacuum is to generate photons with new
frequencies and wave vectors, due to elastic photon-photon scattering. An
expression for the number of generated photons is derived and using
state-of-the-art laser data it is found that the number of photons can reach
detectable levels. In particular, the prospect of using the high repetition
Astra Gemini system at the Rutherford Appleton Laboratory is discussed. The
problem of noise sources is reviewed, and it is found that the noise level can
be reduced well below the signal level. Thus, detection of elastic
photon-photon scattering may for the first time be achieved.


title: Rare decays and CP violation beyond the Standard Model

abstract:
  We review the status of rare decays and CP violation in extensions of the
Standard Model. We analyze the determination of the unitarity triangle and the
model-independent constraints on new physics that can be derived from this
analysis. We find stringent bounds on new contributions to K-Kbar and Bd-Bdbar
mixing, pointing either to models of minimal flavour violation or to models
with new sources of flavour and CP violation in b to s transitions. We discuss
the status of the universal unitarity triangle in minimal flavour violation,
and study rare decays in this class of models. We then turn to supersymmetric
models with nontrivial mixing between second and third generation squarks,
discuss the present constraints on this mixing and analyze the possible effects
on CP violation in b to s nonleptonic decays and on Bs-Bsbar mixing. We
conclude presenting an outlook on Lepton-Photon 2009.


title: Particle production from Q-balls

abstract:
  Non topological solitons, Q-balls can arise in many particle theories with
U(1) global symmetries. As was shown by Cohen et al. \cite{Qballscohen}, if the
corresponding scalar field couples to massless fermions, large Q-balls are
unstable and evaporate, producing a fermion flux proportional to the Q-ball's
surface. In this paper we analyse Q-ball instabilities as a function of Q-ball
size ans fermion mass. In particular, we construct an exact quantum-mechanical
description of the evaporating Q-ball. This new construction provides an
alternative method to compute Q-Ball's evaporation rates. We shall also find
the new expression for the upper bound on evaporation as a function of the
produced fermion mass and study the effects of Q ball's size on particle
production.


title: Dark Matter and the Baryon Asymmetry

abstract:
  We present a mechanism to generate the baryon asymmetry of the Universe which
preserves the net baryon number created in the Big Bang. If dark matter
particles carry baryon number $B_X$, and $\sigma^{\rm annih}_{\bar{X}} <
\sigma^{\rm annih}_{X} $, the $\bar{X}$'s freeze out at a higher temperature
and have a larger relic density than $X$'s. If $m_X \lsi 4.5 B_X $GeV and the
annihilation cross sections differ by $\mathcal{O}$(10%) or more, this type of
scenario naturally explains the observed $\Omega_{DM} \approx 5 \Omega_b$. Two
concrete examples are given, one of which can be excluded on observational
grounds.


title: Spin Polarization Type Dependence of the Neutrino Mass and Nature

abstract:
  The interaction of longitudinal and transversal polarized neutrinos
(antineutrinos) with the field of a nucleus is investigated at the account of
their rest mass, charge, magnetic, anapole and electric dipole moments. The
compound structure of cross sections in these processes has the sharply
expressed features and generalities for any lepton as well as for a massive
Majorana neutrino. A new influence of truly neutral neutrino masses on the
elastic scattering by nuclei of an electric charge has been discovered which
testifies in favor of the existence of fundamental differences both in the
nature and in the masses of longitudinal and transversal neutrinos of Majorana.


title: Models of Baryogenesis via Spontaneous Lorentz Violation

abstract:
  In the presence of background fields that spontaneously violate Lorentz
invariance, a matter-antimatter asymmetry can be generated even in thermal
equilibrium. In this paper we systematically investigate models of this type,
showing that either high-energy or electroweak versions of baryogenesis are
possible, depending on the dynamics of the Lorentz-violating fields. In
addition to the previously-studied models of spontaneous baryogenesis and
quintessential baryogenesis, we identify two scenarios of interest:
baryogenesis from a pseudo-Nambu-Goldstone boson with weak-scale mass and
intermediate-scale baryon-number violation, and sphaleron-induced baryogenesis
driven by a constant-magnitude vector with a late-time phase transition.


title: Leptonic CP Violation Search and the Ambiguity of dm^2_31

abstract:
  We consider a search for the CP-violating angle deltaCP in long baseline
neutrino oscillation experiments. We show that the subleading deltaCP-dependent
terms in the nu_mu -> nu_e oscillation probability can be easily obscured by
the ambiguity of the leading term which depends on |dm^2_31|. It is thus
necessary to determine the value of dm^2_31 with a sufficient accuracy. The
nu_mu survival events, which can be accumulated simultaneously with the nu_e
appearance events, can serve for this purpose owing to its large statistics.
Therefore, the combined analysis of nu_e appearance and nu_mu survival events
is crucial to provide a restrictive constraint on deltaCP. Taking a test
experimental setup, we demonstrate in the deltaCP-dm^2_31 plane that the
analysis of nu_e appearance events leads to less restrictive constraints on the
value of deltaCP due to the ambiguity of dm^2_31 and that the combined analysis
efficiently improves the constraints.


title:
Bounds on Low Scale Gravity from RICE data and Cosmogenic Neutrino Flux
  Models

abstract:
  We explore limits on low scale gravity models set by results from the Radio
Ice Cherenkov Experiment's (RICE) ongoing search for cosmic ray neutrinos in
the cosmogenic, or GZK, energy range. The bound on M_D, the fundamental scale
of gravity, depends upon cosmogenic flux model, black hole formation and decay
treatments, inclusion of graviton mediated elastic neutrino processes, and the
number of large extra dimensions, d. Assuming proton-based cosmogenic flux
models that cover a broad range of flux possibilities, we find bounds in the
interval 0.9 TeV <M_D< 10 TeV. Heavy nucleus-based models generally lead to
smaller fluxes and correspondingly weaker bounds. Values d = 5, 6 and 7, for
which laboratory and astrophysical bounds on LSG models are less restrictive,
lead to essentially the same limits on M_D.


title: Radiative corrections to chiral amplitudes in quasiperipheral kinematics

abstract:
  Chiral amplitudes for two jets processes in quasi-peripheral kinematics are
calculated at the Born and one loop correction level. The amplitudes of
subprocesses describing interaction of virtual and real photon with creation of
a charged fermion pair for various chiral states are considered in details.
Similar results are presented for Compton subprocess with virtual photon.
  Contribution of emission of virtual, soft, and hard real additional photons
are taken into account explicitly. The relevant cross sections expressed in
terms of impact factors are in agreement with structure function approach in
the leading logarithmical approximation.
  Contributions of the next to leading terms are presented in an analytical
form. Accuracy estimation is discussed.


title: Semileptonic and radiative B decays circa 2005

abstract:
  I briefly review the theoretical status of semileptonic and radiative B
decays in 2005.


title: Color breaking in the quantum leaped stop decay

abstract:
  The superfield propagator contains a measurable quantum leap, which comes
from the definition of SUSY. In the sfermion -> Goldstino + fermion vertex
change: 1. the spin of sparticle with discrete 1/2, 2. the Grassman superspace
with the Goldstino shift operator. 3. the spacetime as the result of extra
dimensional leap.
  The leap nature of SUSY transformations appears in the squark decay, it is
the analog definition of SUSY. The quantum leaped outgoing propagators are
determined and break locally the energy and the charge. Like to the
teleportation the entangled pairs are here the b quark and the Goldstino. The
dominant stop production is from gluons. The stop-antistop pair decay to
quantum leaped b (c or t) quark, and the decay break the color. I get for the
(color breaking) quantum leap: 10^-18 m !!! And 10^-11 m color breaking would
be needed for a color breaking chain reaction. The open question is: Are the
colliders going to produce supersymmetry charge? Because some charges in QGP
can make long color breaking and a chain reaction.
  A long color broken QGP state in the re-Big Bang theory could explain the
near infinite energy and the near infinite mass of the universe: - at first was
random color QGP in the flat space-time, - at twice the color restoration in
the curved space-time, which eats the Goldstinos, - and finally the baryon
genesis. The re Big Bang make a supernova like collapse and a flat explosion of
Universe.
  This explanation of SUSY hides the Goldstone fermion in the extra dimensions,
the Goldstino propagate only in superspace and it is a not observable dark
matter.
  PACS: 12.60.Jv


title:
Flavour changing strong interaction effects on top quark physics at the
  LHC

abstract:
  We perform a model independent analysis of the flavour changing strong
interaction vertices relevant to the LHC. In particular, the contribution of
dimension six operators to single top production in various production
processes is discussed, together with possible hints for identifying signals
and setting bounds on physics beyond the standard model.


title: Dark Matter with (very) heavy SUSY scalars at ILC

abstract:
  In this paper, six SUSY scenarios with heavy sfermions, mainly based on
theoretical arguments and on experimental indications for new physics, are
defined. These scenarios, consistent with the amount of dark matter (DM)
measured by WMAP, are then analysed in detail providing pertinent examples of
the potential of ILC. It is shown that in most cases ILC, with its high
precision based on the chargino analysis and in spite of an incomplete coverage
of the gaugino and slepton mass spectrum, can predict the amount of DM in our
universe with an accuracy which matches the WMAP results.


title: The colour evolution of the process q q -> q q g

abstract:
  We calculate the soft anomalous dimension matrix for a five-parton process,
qq -> qqg. Considering different bases we unveil some interesting properties of
this matrix.


title: Developments in perturbative QCD

abstract:
  A brief review of key recent developments and ongoing projects in
perturbative QCD theory, with emphasis on conceptual advances that have the
potential for impact on LHC studies. Topics covered include: twistors and new
recursive calculational techniques; automation of one-loop predictions;
developments concerning NNLO calculations; the status of Monte Carlo event
generators and progress in matching to fixed order; analytical resummation
including the push to NNLL, automation and gap between jets processes; and
progress in the understanding of saturation at small x.


title:
Can oscillating scalar fields decay into particles with a large thermal
  mass?

abstract:
  We calculate the dissipation rate of a coherently oscillating scalar field in
a thermal environment using nonequilibrium quantum field theory and apply it to
the reheating stage after cosmic inflation. It is shown that the rate is
nonvanishing even when particles coupled to the oscillating inflaton field have
a larger thermal mass than it, and therefore the cosmic temperature can be much
higher than inflaton's mass even in the absence of preheating. Its cosmological
implications are also discussed.


title: QCD string and the Lorentz nature of confinement

abstract:
  We address the question of the Lorentz nature of the effective long-range
interquark interaction generated by the QCD string with quarks at the ends.
Studying the Dyson-Schwinger equation for a heavy-light quark-antiquark system,
we demonstrate explicitly how a Lorentz-scalar interaction appears in the
Diraclike equation for the light quark, as a consequence of chiral symmetry
breaking. We argue that the effective interquark interaction in the Hamiltonian
of the QCD string with quarks at the ends stems from this effective scalar
interaction.


title: A possible 0^{-+} glueball candidate X(1835)

abstract: The possibility of X(1835) as a 0^{-+} glueball is investigated.


title:
On the Probabilistic Interpretation of the Evolution Equations with
  Pomeron Loops in QCD

abstract:
  We study some structural aspects of the evolution equations with Pomeron
loops recently derived in QCD at high energy and for a large number of colors,
with the purpose of clarifying their probabilistic interpretation. We show
that, in spite of their appealing dipolar structure and of the self-duality of
the underlying Hamiltonian, these equations cannot be given a meaningful
interpretation in terms of a system of dipoles which evolves through
dissociation (one dipole splitting into two) and recombination (two dipoles
merging into one). The problem comes from the saturation effects, which cannot
be described as dipole recombination, not even effectively. We establish this
by showing that a (probabilistically meaningful) dipolar evolution in either
the target or the projectile wavefunction cannot reproduce the actual evolution
equations in QCD.


title: Concluding Talk: QCD 2005

abstract:
  This is neither a summary talk (too much for too short a talk) nor a
conclusion (a gigantic work is in progress and we are not at the end of a
particular phase), rather an overview of the field as reflected at this
Conference.


title:
3D Relativistic Hydrodynamic Computations Using Lattice-QCD-Inspired
  Equations of State

abstract:
  In this communication, we report results of three-dimensional hydrodynamic
computations, by using equations of state with a critical end point as
suggested by the lattice QCD. Some of the results are an increase of the
multiplicity in the mid-rapidity region and a larger elliptic-flow parameter
v2. We discuss also the effcts of the initial-condition fluctuations and the
continuous emission.


title: Probing Exotic Physics With Cosmic Neutrinos

abstract:
  Traditionally, collider experiments have been the primary tool used in
searching for particle physics beyond the Standard Model. In this talk, I will
discuss alternative approaches for exploring exotic physics scenarios using
high energy and ultra-high energy cosmic neutrinos. Such neutrinos can be used
to study interactions at energies higher, and over baselines longer, than those
accessible to colliders. In this way, neutrino astronomy can provide a window
into fundamental physics which is highly complementary to collider techniques.
I will discuss the role of neutrino astronomy in fundamental physics,
considering the use of such techniques in studying several specific scenarios
including low scale gravity models, Standard Model electroweak instanton
induced interactions, decaying neutrinos and quantum decoherence.


title:
$k$ Strings from Various Perspectives: QCD, Lattices, String Theory and
  Toy Models

abstract:
  I review the status of the issue of the k-string tension in Yang-Mills
theory. After a summary of known facts I discuss a weakly coupled
four-dimensional Yang-Mills theory that supports non-Abelian strings and can,
in certain aspects, serve as a toy model for QCD strings. In the second part of
the talk I present original results obtained in a two-dimensional toy model
which provides some evidence for the sine formula.


title:
Improved Calculation of Electroweak Radiative Corrections and the Value
  of V_ud

abstract:
  A new method for computing hadronic effects on electroweak radiative
corrections to low-energy weak interaction semileptonic processes is described.
It employs high order perturbative QCD results originally derived for the
Bjorken sum rule along with a large N QCD-motivated interpolating function that
matches long and short-distance loop contributions. Applying this approach to
the extraction of the CKM matrix element V_ud from superallowed nuclear beta
decays reduces the theoretical loop uncertainty by about a factor of 2 and
gives V_ud = 0.97377(11)(15)(19). Implications for CKM unitarity are briefly
discussed.


title: Algebraic approach to solve $t\bar{t}$ dilepton equations

abstract:
  The set of non-linear equations describing the Standard Model kinematics of
the top quark antiqark production system in the dilepton decay channel has at
most a four-fold ambiguity due to two not fully reconstructed neutrinos. Its
most precise solution is of major importance for measurements of top quark
properties like the top quark mass and $t\bar{t}$ spin correlations. Simple
algebraic operations allow to transform the non-linear equations into a system
of two polynomial equations with two unknowns. These two polynomials of
multidegree eight can in turn be analytically reduced to one polynomial with
one unknown by means of resultants. The obtained univariate polynomial is of
degree sixteen. The number of its real solutions is determined analytically by
means of Sturm's theorem, which is as well used to isolate each real solution
into a unique pairwise disjoint interval. The solutions are polished by seeking
the sign change of the polynomial in a given interval through binary
bracketing.


title: Effects of LatticeQCD EoS and Continuous Emission on Some ObseErvables

abstract:
  Effects of lattice-QCD-inspired equations of state and continuous emission on
some observables are discussed, by solving a 3D hydrodynamics. The particle
multiplicity as well as v2 are found to increase in the mid-rapidity. We also
discuss the effects of the initial-condition fluctuations.


title: Color strings, Pomerons and Color Glass Condensate

abstract:
  In the recent experiments like DIS at HERA or the heavy-ion experiments at
RHIC, and also in expected LHC at CERN, the number of involved partons is very
large, due to the high energy and/or the high number of participants of those
experiments. These high parton densities should in principal lead to an
extremely huge multiparticle production, but experimentally we have seen that
this is not the case. So there should be a mechanism that reduces the number of
created particle. Here, I review the problem of parton saturation and its
implications through three in principal different approaches, but somewhat
related: saturation in a geometrical approach, QCD saturation through the Color
Glass Condensate and perturbative Pomeron approach with initial conditions.


title:
Quantization of Fermionic Fields with Two Mass States in the First Order
  Formalism

abstract:
  The relativistic 20-component wave equation, describing particles with spin
1/2 and two mass states, is analyzed. The projection operators extracting
states with definite energy and spin projections, and density matrix are
obtained. The canonical quantization of the field with two mass states in the
formalism of the first order is performed and the chronological pairing of the
20-component operators was found.


title: The CP asymmetry in B^0(t) -> K_S \pi^0 \gamma in the Standard Model

abstract:
  The time-dependent CP asymmetry in exclusive B^0(t) -> K^{*0}\gamma decays
has been proposed as a probe of new physics in B decays. Recently, this method
was extended to radiative decays into multibody hadronic final states such as
B^0(t)-> K_S\pi^0\gamma and B^0(t)-> \pi^+\pi^-\gamma. The CP asymmetry in
these decays vanishes to the extent that the photon is completely polarized. In
the Standard Model, the photon emitted in b-> s\gamma has high left-handed
polarization, but right-handed contamination enters already at leading order in
\Lambda/m_b even for vanishing light quark masses. We compute here the
magnitude of this effect and the time dependent CP asymmetry parameter S_{K_S
\pi^0\gamma}. We find that the Standard Model can easily accomodate values of S
as large as 10%, but a precise value cannot be obtained at present because of
strong interactions uncertainties.


title: Flipped SU(5) Predicts $\delta T/T$

abstract:
  We discuss hybrid inflation in supersymmetric flipped SU(5) model such that
the cosmic microwave anisotropy $\delta T/T$ is essentially proportional to $(M
/M_{P})^2$, where $M$ denotes the symmetry breaking scale and $M_{P}$
($=2.4\times 10^{18}$ GeV) is the reduced Planck mass. The magnitude of $M$
determined from $\delta T/T$ measurements can be consistent with the value
inferred from the evolution of SU(3) and SU(2) gauge couplings. In other words,
one could state that flipped SU(5) predicts (more precisely `postdicts')
$\delta T/T$. The scalar spectral index $n_s = 0.993\pm 0.007$, the scalar to
tensor ratio satisfies $r \lapproxeq 10^{-6}$, while $dn_s/d{\rm ln}k
\lapproxeq 4\times 10^{-4}$.


title:
Determining fundamental parameters from the chargino sector in
  Left-Right Supersymmetric models

abstract:
  Analytical expressions relating the fundamental parameters describing the
chargino sector in the context of the Left-Right Supersymmetric model are
constructed. A general complex extension of the real non-symmetric chargino
mass matrix including all possible CP-violating phases is considered. The
method used for such a effects is the projector formalism based on the explicit
knowledge of two unitary matrices diagonalizing the chargino mass matrix. Some
possible scenarios allowing us to extract analytical and numerical values for
the unknown parameters are considered. Moreover, an algorithm allowing us to
disentangle the fundamental parameters of the chargino sector, based on
possible measurements of some class of cross-section observables related to the
chargino pair production in $e^+ e^-$ annihilation processes, is described.
Some comparisons with the corresponding results in the context of the Minimal
Supersymmetric Standard Model are given.


title:
Top and Higgs Flavor Changing Neutral Couplings in two Higgs Doublets
  Model

abstract:
  We study various channels of top and Higgs Flavor Changing Neutral Couplings
(FCNC) in the two Higgs doublet Model with natural flavor conservation (2HDM-I
and 2HDM-II). We update known results about t\to c \gamma, c Z, cg and comment
on t\to c h0. The decays $t\to c h0$ as well as {h0,H0}\to \bar{t}c are
sensitive both to the bottom Yukawa coupling as well as to the trilinear scalar
couplings h0H+H- and H0H+H-. After imposing unitarity constraints as well as
vacuum stability conditions on scalar sector parameters, in 2HDM-II we found
that for large $\tan\beta\ga 40$ and rather light charged Higgs mass $M_{H+}\la
150$ GeV, the maximum values allowed for Br(t\to c h0), {\rm Br}(H0\to
\bar{t}c) and {\rm Br}(h0\to \bar{t}c) are: $8\times 10^{-5}$, $10^{-3}$ and
$10^{-4}$ respectively. For charged Higgs mass in the range [200,300] GeV,
which can accommodate $B\to X_s\gamma$ constraint if one takes into account
large theoretical uncertainties, the branching ratio of both H0\to\bar{t}c and
h0\to \bar{t}c can still be slightly larger than $10^{-5}$. For A0\to \bar{t}c,
its branching ratio is smaller than $\approx 10^{-7}$ in both 2HDM-I and
2HDM-II. We study also the top-charm associated production at e+e- colliders
and its \gamma\gamma option as well as at muon colliders. It is found that the
cross section of \gamma\gamma\to \bar{t}c can be of the order $0.01\to 0.1$ fb
near threshold region, while the cross section of e+e-\to \bar{t}c is well
below $10^{-2}$ fb. The situation is slightly better for muon colliders where a
few fb cross section can be reached for large \tan\beta and low center of mass
energy \sqrt{s}\la 500 GeV.


title:
Strange quark mass from e+e- revisited and present status of light quark
  masses

abstract:
  We reconsider the determinations of the strange quark mass m_s from e+e- into
hadrons data using a new combination of FESR and revisiting the existing
tau-like sum rules by including non-resonant contributions to the spectral
functions. To order alpha_s^3 and including the tachyonic gluon mass lambda^2
contribution, which phenomenologically parametrizes the UV renormalon effect
into the PT series, we obtain the invariant mass m_s=(119 +- 17)MeV leading to:
m_s(2 GeV)=(104+- 15)MeV. Combining this value with the recent and independent
phenomenological determinations from some other channels, to order alpha_s^3
and including lambda^2, we deduce the weighted average: m_s (2 GeV)=(96.1 +-
4.8)MeV . The positivity of the spectral functions in the (pseudo)scalar [resp.
vector] channels leads to the lower [resp. upper] bounds of m_s(2 GeV): (71 +-
4) MeV < m_s(2 GeV) < (151 +- 14) MeV, to order alpha_s^3. Using the ChPT mass
ratio r_3 = 2m_s/(m_u+m_d)=24.2 +- 1.5, and the average value of m_s, we
deduce:
  (m_u+m_d)(2 GeV)=(7.9 +- 0.6) MeV, consistent with the pion sum rule result,
which, combined with the ChPT value for m_u/m_d, gives: m_d(2 GeV)=(5.1 +-
0.4)MeV and m_u(2 GeV)=(2.8 +- 0.2)MeV. Finally, using (m_u+m_d) from the pion
sum rule and the average value of m_s (without the pion sum rule), the method
gives: r_3= 23.5 +- 5.8 in perfect agreement with the ChPT ratio, indicating
the self-consistency of the sum rule results. Using the value: m_b(m_b)=(4.23
+- 0.06) GeV, we also obtain the model-building useful scale-independent mass
ratio: m_b/m_s=50 +- 3.


title:
Next-to-next-to leading order corrections to deeply virtual Compton
  scattering: the non-singlet case

abstract:
  We study perturbative QCD corrections to deeply virtual Compton scattering on
an unpolarized nucleon target in the flavor non-singlet sector to
next-to-next-to-leading order accuracy, restricting ourselves to the
kinematically dominant amplitude. The difference between the standard minimal
subtraction and the conformal scheme, in which conformal symmetry is manifest,
is studied to next-to-leading order. Beyond this order we employ conformal
symmetry for the evaluation of perturbative corrections. Within a certain class
of generalized parton distributions we find moderate radiative corrections.


title:
What do lattice baryonic susceptibilities tell us about quarks, diquarks
  and baryons at $T>Tc$?

abstract:
  Lattice data on QCD thermodynamics, especially recent study of high order
susceptibilities by UK-Bielefeld collaboration, have provided valuable
information about matter properties around and above the critical temperature
$T_c$. In this work we tried to understand what physical picture would explain
these numerical data. We found two scenarios which will do it: (i) a quark
quasiparticle gas, with the effective mass which is strongly $decreasing$ near
the phase boundary into the QGP phase; or (ii) a picture including baryons at
$T>T_c$, with the mass rapidly $increasing$ across the phase boundary toward
QGP. We further provide several arguments in favor of the latter scenario, one
of which is a natural continuity with the baryon gas picture at $T<T_c$.


title: Soliton Picture for Pentaquarks

abstract:
  In this talk I report on a thorough comparison between the bound state and
rigid rotator approaches to generate baryon states with non--zero strangeness
in chiral soliton models. This comparison shows that the scattering amplitude
in the bound state approach contains contributions generated by the exchange of
the rigid pentaquark excitation, and that the two approaches are consistent
with each other in the large $N_C$ limit. The comparison paves the way to
unambiguously compute the width of the $\Theta^+$ pentaquark in chiral soliton
models.


title: Impact of Duality Violations on Spectral Sum Rule Analyses

abstract:
  Recent sum rule analyses on the <VV-AA> two-point correlator have led to
significant discrepancies in the values found for the OPE condensates, most
dramatically in the dimension eight condensate and to a lesser extent in the
dimension six one. Precise knowledge of these condensates is of relevance in
kaon decays and therefore it seems mandatory to assess the actual impact of
what is commonly neglected in spectral sum rules, most prominently the issue of
duality violations. We will explicitly compute them in a toy model and show
that they are a priori non-negligible.


title:
Ultraviolet modified photons and anisotropies in the cosmic microwave
  background radiation

abstract:
  We discuss a minimal canonical modification of electrodynamics in order to
account for ultraviolet Lorentz violating effects. This modification creates a
birefringence that rotates the polarization planes from different directions.
Such effects might be detectable in the anisotropic polarization of the Cosmic
Microwave Background radiation.


title:
Non-perturbative contribution to the Polyakov loop above the
  deconfinement phase transition

abstract:
  The Polyakov loop is an order parameter to the confinement-deconfinement
phase transition in pure gluodynamics. Recently a simple phenomenological model
has been proposed to describe the available lattice data for the renormalized
Polyakov loop in the deconfinement phase (hep-ph/0505215). These data exhibit
unequivocal inverse power temperature corrections driven by a dimension two
gluon condensate. The heavy quark free energy is also studied and compared to
lattice data.


title:
The entropy of hot QCD at large N_f: Successfully testing weak coupling
  techniques

abstract:
  It has been known for some time that the entropy of hot QCD is well
reproduced by weak coupling techniques. These do not identify with perturbation
theory, known to have poor convergence properties, but involve resumming the
physics of hard thermal loops in the non-perturbative Phi-derivable two-loop
approximation. We test this approximation scheme in the limit of large flavor
number (N_f) where the exact result can be calculated for a wide range of
couplings for which the influence of the Landau pole is negligible. Using full
momentum-dependent fermionic self-energies instead of the previously only known
weighted average value to order g^3, the exact result for the entropy can be
remarkably well reproduced by the HTL resummed theory for a natural choice of
the renormalization scale, and this up to large values of the coupling. This
gives confidence in the reliability of weak coupling techniques when applied to
the thermodynamics of QCD, at least for temperatures T > 3 T_c.


title: Strong CP violation and the neutron electric dipole form factor

abstract:
  We calculate the neutron electric dipole form factor induced by the CP
violating theta-term of QCD, within a perturbative chiral quark model which
includes pion and kaon clouds. On this basis we derive the neutron electric
dipole moment and the electron-neutron Schiff moment. From the existing
experimental upper limits on the neutron electric dipole moment we extract
constraints on the theta-parameter and compare our results with other
approaches.


title: Quark gap equation within the analytic approach to QCD

abstract:
  The compatibility between the QCD analytic invariant charge and chiral
symmetry breaking is examined in detail. The coupling in question incorporates
asymptotic freedom and infrared enhancement into a single expression, and
contains only one adjustable parameter with dimension of mass. When inserted
into the standard form of the quark gap-equation it gives rise to solutions
displaying singular confining behavior at the origin. By relating these
solutions to the pion decay constant, a rough estimate of about 880 MeV is
obtained for the aforementioned mass-scale.


title:
Light scalar and vector mesons in the large $N_c$ limit from unitarized
  chiral perturbation theory

abstract:
  We review the large Nc behavior of light scalar and vector resonances
generated from unitarized meson-meson scattering amplitudes at one loop in
Chiral Perturbation Theory. The vectors nicely follow the behavior expected for
qqbar states, whereas scalar mesons do not. This suggests that the main
component of light scalars is not qqbar. We also comment on t-channel vector
exchange as well as on the large Nc behavior of the mass splittings between the
vectors generated from the inverse amplitude method.


title:
Nonperturbative renormalization of Phi-derivable approximations in
  theories with fermions

abstract:
  We show how to renormalize Phi-derivable approximations in a theory with a
fermionic field coupled to a self-interacting scalar field through a Yukawa
interaction. The nonperturbative renormalization concerns the self-interaction
coupling of the scalar field which is renormalized via a set of nested
Bethe-Salpeter equations for the scalar and fermionic four-point functions. We
use this information to construct explicit finite equations of motion in the
symmetric phase. We work in the context of equilibrium quantum field theory and
show that the renormalization can be carried out without introducing
temperature dependent counterterms.


title: Complex Meson Spectroscopy

abstract:
  We do meson spectroscopy by studying the behavior of S-matrix poles in the
complex-energy plane, as a function of the coupling strength for triplet-P-zero
quark-pair creation. Thereto, a general formula for non-exotic hadron-hadron
scattering involving arbitrary quark confinement is used, which can be applied
to all flavors. We find two distinct types of poles, which we call
"confinement" and "continuum" poles, respectively. Together, they suffice to
understand the experimental meson spectrum.


title: Collective non-Abelian instabilities in a melting Color Glass Condensate

abstract:
  We present first results for 3+1-D simulations of SU(2) Yang-Mills equations
for matter expanding into the vacuum after a heavy ion collision. Violations of
boost invariance cause a Weibel instability leading soft modes to grow with
proper time $\tau$ as $\exp(\Gamma \sqrt{g^2\mu \tau})$, where $g^2\mu$ is a
scale arising from the saturation of gluons in the nuclear wavefunction. The
scale for the growth rate $\Gamma$ is set by a plasmon mass, defined as
$\omega_{\rm pl}= \kappa_0 \sqrt{\frac{g^2\mu}{\tau}}$, generated dynamically
in the collision. We compare the numerical ratio $\Gamma/\kappa_0$ to the
corresponding value predicted by the Hard Thermal Loop formalism for
anisotropic plasmas.


title: Two pole structure of the Lambda(1405) resonance

abstract:
  The K^- p --> pi^0 pi^0 Sigma^0 reaction is studied within a chiral unitary
model. The distribution of pi^0 Sigma^0 states forming the Lambda(1405) shows,
in agreement with a recent experiment, a peak at 1420 MeV and a relatively
narrow width of 38 MeV. This reaction gives maximal possible weight to the
second Lambda(1405) state found in chiral unitary theories, which is narrow and
of higher energy than the nominal Lambda(1405). In contrast, the pi^- p --> K^0
pi Sigma reaction gives more weight to the pole at lower energy and with a
larger width. The data of these two experiments, together with the present
theoretical analysis, provides for the first time a clear experimental evidence
of the two pole structure of the Lambda(1405).


title: Toward the theory of strongly coupled Quark-Gluon Plasma

abstract:
  We review recent progress toward understanding of sQGP. The phenomenological
part includes discussion of elliptic and conical flows at RHIC. Then we proceed
to first quantum mechanical studies of manybody states at $T>Tc$, the
``polymeric chains'' $\bar q.g.g... q$ and baryons. A new model for sQGP is a
classical dynamical system, in which color vector is changed via the Wong
equation. First Molecular Dynamics (MD) results for its diffusion and viscosity
are reported. Finally we speculate how strong correlations in matter may help
solve puzzles related to jet quenching, both the magnitude and angular
distribution.


title:
Chiral dynamics and pion properties at finite temperature and isospin
  chemical potential

abstract:
  The thermal and density corrections, in terms of the isospin chemical
potential $\mui $, to the mass of the pions, the decay constant and different
condensates are studied in the framework of the SU(2) low energy effective
chiral lagrangian at finite temperature in the two phases: The first phase
$|\mui|<m$ and the second phase $|\mui|>m$, being $m$ the tree-level pion mass.
As a function of temperature for $\mui =0$, the mass remains quite stable,
starting to grow for very high values of $T$, confirming previous results.
However, there are interesting corrections to the mass when both effects
(temperature and chemical potential) are simultaneously present. At zero
temperature the $\pi ^{\pm}$ should condense when $\mui = \pm m_{\pi}$. At
finite $T$, the condensed pion acquires a thermal mass in such a way that a
mixture, like in a superfluid, of a condensed and normal phase appears.


title:
Electroweak Constraints on Effective Theories with U(2)xU(1) Flavor
  Symmetry

abstract:
  In a previous analysis presented in hep-ph/0412166, electroweak constraints
were given on arbitrary linear combinations of a set of dimension-6 operators.
Flavor universality and thus U(3)^5 flavor symmetry were assumed for the
operators. In this article, we expand the analysis to account for the
flavor-dependent theories that distinguish the third generation of fermions
from the light two generations. We still assume flavor universality for the
light two generations to avoid large FCNCs. Consequently, the U(3)^5 flavor
symmetry is relaxed to [U(2)xU(1)]^5, and therefore more operators are added.
We calculate the corrections to electroweak precision observables, assuming
arbitrary coefficients for the operators. The corrections are combined with the
standard model predictions and the experimental data to obtain the chi^2
distribution as a function of the operator coefficients. We apply our result to
constrain two flavor-dependent extensions of the standard model: the simplest
little Higgs model and a model with an SU(2)xSU(2)xU(1) gauge group.


title: Hadronic fluctuations in the QGP

abstract:
  We analyze fluctuations of quark number and electric charge, in 2-flavour QCD
at finite temperature and vanishing net baryon number density. In the hadronic
phase we find that an enhancement of charge fluctuations arises from
contributions of doubly charged hadrons to the thermodynamics. The rapid
suppression of fluctuations seen in the high temperature phase suggests that in
the QGP quark number and electric charge are predominantly carried by
quasi-particles with the quantum numbers of quarks.


title: NuTeV Anomaly Versus Strange-Antistrange Asymmetry

abstract:
  We report the correction from the asymmetric strange-antistrange sea of the
nucleon by using both the light-cone baryon-meson fluctuation model and the
chiral quark model, and show that a significant part of the NuTeV anomaly can
be explained by the strange-antistrange asymmetry. We also show that the
calculated $s/\bar{s}$ asymmetry are compatible with the NuTeV data by
including some additional symmetric $s/\bar{s}$ quark contribution.


title:
Electromagnetic Field Creation During EWPT Nucleation With Lepton
  Currents

abstract:
  We include the electromagnetic currents from fermion degrees of freedom in
the equations of motion for electroweak MSSM with a right-handed Stop that we
have recently investigated. It is found that near the surface of the bubble
walls there are important effects on the electromagnetic fields produced during
bubble nucleation.


title:
Predictions of pp, pbar p total cross section and rho ratio at LHC and
  cosmic-ray energies based on duality

abstract:
  Based on duality, we previously proposed to use rich informations on pi p
total cross sections below N=10GeV in addition to high-energy data in order to
discriminate whether these cross sections increase like log nu or log2 nu at
high energies. We then arrived at the conclusion that our analysis prefers the
log2 nu behaviours. Using the FESR as a constraint for high energy parameters
also for the pp, pbar p scattering, we search for the simultaneous best fit to
the data points of sigma(tot) and rho ratio up to some energy (e.g., ISR,
Tevatron) to determine the high-energy parameters. We then predict sigma(tot)
and rho in the LHC and high-energy cosmic-ray regions. Using the data up to
E=1.8TeV (Tevatron), we predict sigma(tot)pp and rho(pp) at the LHC energy
(E=14TeV) as 106.3+- 5.1syst +- 2.4stat mb and 0.126 +- 0.007syst +- 0.004stat,
respectively. The predicted values of sigma(tot) in terms of the same
parameters are in good agreement with the cosmic-ray experimental data up to
Plab = 10 (8--9) GeV.


title: Effective N=1 description of 5D conformal supergravity

abstract:
  We construct an effective N=1 superfield description of five-dimensional
conformal supergravity. By the use of this description, we reinterpret some
physical systems such as Scherk-Schwarz supersymmetry breaking from the
conformal supergravity viewpoint. We also show how to introduce a radion
fluctuation mode in this framework.


title:
Conceptual design of a scalable multi-kton superconducting magnetized
  liquid Argon TPC

abstract:
  We discuss the possibility of new generation neutrino and astroparticle
physics experiments exploiting a superconducting magnetized liquid Argon Time
Projection Chamber (LAr TPC). The possibility to complement the features of the
LAr TPC with those provided by a magnetic field has been considered in the past
and has been shown to open new physics opportunities, in particular in the
context of a neutrino factory. The experimental operation of a magnetized 10 lt
LAr TPC prototype has been recently demonstrated. From basic proof of
principle, the main challenge to be addressed is the possibility to magnetize a
very large volume of Argon, corresponding to 10 kton or more, for future
neutrino physics applications. In this paper we present one such conceptual
design.


title: A New Type of Complex Neutrino Mass Texture and mu-tau Symmetry

abstract:
  Relying upon the usefulness of the \mu-\tau symmetry, we find a new type of
neutrino mass texture with a single phase parameter \delta that describes
maximal atmospheric neutrino mixing and Dirac CP violation due to the presence
of \delta. The Majorana phase associated with the third massive neutrino turns
out to be identical to the Dirac phase while other Majorana phases vanish. The
nonvanishing reactor neutrino mixing angle \theta_{13} is induced by a \mu-\tau
symmetry breaking effect. Flavor neutrino masses that supply the \mu-\tau
symmetry breaking terms become pure imaginary for \delta=\pm \pi/2, leading to
maximal CP violation. There is a parameter denoted by \eta, which is either
O(\sqrt{\Delta m^2_\odot/\Delta m^2_{atm}}) in the normal mass hierarchy, or
O(\Delta m^2_\odot/\Delta m^2_{atm}) in the inverted mass hierarchy. In the
inverted mass hierarchy, the contribution of O(\sin^2\theta_{13}) is found to
be significant and cannot be neglected. Our texture also leads to quasi
degenerate neutrinos with masses of O(\sqrt{\Delta m^2_{atm}}), which serves as
the scale for the effective neutrino mass in (\beta\beta)_{0\nu}-decay. This
texture does not include \eta, and \Delta m^2_\odot naturally arises from
contributions of O(\sin^2\theta_{13}) to give \Delta m^2_\odot/\Delta
m^2_{atm}\sim\sin^2\theta_{13}, yielding the prediction of
\sin^2\theta_{13}=O(10^{-2}).


title: P-odd asymmetries in polarized (Lambda_b -> Lambda l^+ l^-) decay

abstract:
  We calculate various P-odd asymmetries appearing in the differential decay
width for the cascade decay (Lambda_b -> Lambda(-> a+b) V^* (-> l^+ l^-)) with
polarized and unpolarized heavy baryons including new vector type interactions
and using the helicity amplitudes. It is obtained that the study of P-odd
asymmetries can serve a good test for establishing new physics beyond the SM.


title: Progress in chiral perturbation theory

abstract:
  After a short status report on chiral perturbation theory, I review recent
progress in determining some of the low-energy couplings by matching the
effective theory to QCD. Consequences for K_{l3} decays and for the extraction
of the CKM matrix element V_{us} are reported. Hadronic vacuum polarization at
low energies and its impact on the anomalous magnetic moment of the muon are
discussed.


title: Heavy Quark Correlators Above Deconfinement

abstract:
  We compare the quarkonia correlators from potential models and from lattice
QCD.


title: Meson Electroweak Interactions in Multicolor Quantum Chromodynamics

abstract:
  This PhD Thesis is mainly devoted to the study of hadronic matrix elements of
kaons. Its inner structure can be divided in three parts. In Chapter 3 we
address the issue of quantum corrections in Resonance Chiral Lagrangians with
the aid of the 1/N_c expansion. We compute, as an illustrative example, the
coupling L_10 to one loop. Chapters 4 and 5 are the main body of the present
work and deal with the determination of the relevant parameters in kaon
phenomenology. We give a value for the invariant B_K, the kaon mass difference
and \epsilon_K in a model-independent way, paying special attention to the
issue of scale and scheme independence. In our approach, this is achieved in a
very natural way once matching between long and short distances is ensured. We
end up with a final chapter on the subject of duality violations in the VV-AA
two-point correlator.


title: QCD corrections to the electric dipole moment of the neutron in the MSSM

abstract:
  We consider the QCD corrections to the electric dipole moment of the neutron
in the Minimal Supersymmetric Standard Model. We provide a master formula for
the Wilson coefficients at the low energy scale including for the first time
the mixing between the electric and chromoelectric operators and correcting
widely used previous LO estimates. We show that, because of the mixing between
the electric and chromoelectric operators, the neutralino contribution is
always strongly suppressed. We find that, in general, the effect of the QCD
corrections is to reduce the amount of CP violation generated at the high
scale. We discuss the perturbative uncertainties of the LO computation, which
are particularly large for the gluino-mediated contribution. This motivates our
Next-to-Leading order analysis. We compute for the first time the order alpha_s
corrections to the Wilson coefficients for the gluino contributions, and
recompute the two-loop anomalous dimension for the dipole operators. We show
that the large LO uncertainty disappears once NLO corrections are taken into
account.


title: Gauge-Higgs unification with brane kinetic terms

abstract:
  By identifying the Higgs field as an internal component of a higher
dimensional gauge field it is possible to solve the little hierarchy problem.
The construction of a realistic model that incorporates such a gauge-Higgs
unification is an important problem that demands attention. In fact, several
attempts in this direction have already been put forward. In this letter we
single out one such attempt, a 6D SU(3) extended electroweak theory, where it
is possible to obtain a Higgs mass prediction in accord with global fits. One
shortcoming of the model is its prediction for the Weinberg angle, it is too
large. We slightly modify the model by including brane kinetic terms in a way
motivated by the orbifold action on the 6D fields. We show that in this way it
is possible to obtain the correct Weinberg angle while keeping the desired
results in the Higgs sector.


title: Yukawa sector in non-supersymmetric renormalizable SO(10)

abstract:
  We discuss the ordinary, non-supersymmetric SO(10) as a theory of fermion
masses and mixings. We construct two minimal versions of the Yukawa sector
based on $\bar{126}_H $ and either $10_H$ or $120_H$. The latter case is of
particular interest since it connects the absolute neutrino mass scale with the
size of the atmospheric mixing angle $\theta_A$. It also relates the smallness
of $V_{cb}$ with the largeness of $\theta_A$. These results are based on the
analytic study of the second and third generations. Furthermore, we discuss the
structure of the light Higgs and the role of the Peccei-Quinn symmetry for dark
matter and the predictivity of the theory.


title: Screening of Z(N) monopole pairs in gauge theories

abstract:
  The screening of magnetic Z(N)-monopoles and the associated screening length
in SU(N) gauge theories are analyzed theoretically, and computed numerically in
the 3d SU(2) theory. The nature of the screening excitations as well as their
mass have so far remained inconclusive in the literature. Here we show that the
screening mass is identical to the lowest J^{PC}_R=0^{++}_+ excitation of the
Yang-Mills Hamiltonian with one compact direction with period 1/T, the
subscript R referring to parity in this direction. We extend the continuum
formulation to one on the lattice, and determine the transfer matrix governing
the decay of the spatial monopole correlator at any finite lattice spacing. Our
numerical results for SU(2) for the screening mass in the dimensionally reduced
(high temperature) theory are compatible with the 0^{++} glueball mass in 3d
SU(2).


title:
Stringent Phenomenological Investigation into Heterotic String Optical
  Unification

abstract:
  For the weakly coupled heterotic string (WCHS) there is a well-known factor
of twenty conflict between the minimum string coupling unification scale,
Lambda_H ~5x10^(17) GeV, and the projected MSSM unification scale, Lambda_U ~
2.5x10^(16) GeV, assuming an intermediate scale desert (ISD). Renormalization
effects of intermediate scale MSSM-charged exotics (ISME) (endemic to
quasi-realistic string models) can resolve this issue, pushing the MSSM scale
up to the string scale. However, for a generic string model, this implies that
the projected Lambda_U unification under ISD is accidental. If the true
unification scale is 5.0x10^(17) GeV, is it possible that illusionary
unification at 2.5x10^(17) GeV in the ISD scenario is not accidental? If it is
not, then under what conditions would the assumption of ISME in a WCHS model
imply apparent unification at Lambda_U when ISD is falsely assumed? Geidt's
"optical unification" suggests that Lambda_U is not accidental, by offering a
mechanism whereby a generic MSSM scale Lambda_U < Lambda_H is guaranteed. A
WCHS model was constructed that offers the possibility of optical unification,
depending on the availability of anomaly-cancelling flat directions meeting
certain requirements. This paper reports on the systematic investigation of the
optical unification properties of the set of stringent flat directions of this
model. Stringent flat directions can be guaranteed to be F-flat to all finite
order (or to at least a given finite order consistent with electroweak scale
supersymmetry breaking) and can be viewed as the likely roots of more general
flat directions. Analysis of the phenomenology of stringent flat directions
gives an indication of the remaining optical unification phenomenology that
must be garnered by flat directions developed from them.


title: Divergent Perturbation Series

abstract:
  Various perturbation series are factorially divergent. The behavior of their
high-order terms can be found by Lipatov's method, according to which they are
determined by the saddle-point configurations (instantons) of appropriate
functional integrals. When the Lipatov asymptotics is known and several lowest
order terms of the perturbation series are found by direct calculation of
diagrams, one can gain insight into the behavior of the remaining terms of the
series. Summing it, one can solve (in a certain approximation) various
strong-coupling problems. This approach is demonstrated by determining the
Gell-Mann - Low functions in \phi^4 theory, QED, and QCD for arbitrary coupling
constants. An overview of the mathematical theory of divergent series is
presented, and interpretation of perturbation series is discussed. Explicit
derivations of the Lipatov asymptotic forms are presented for some basic
problems in theoretical physics. A solution is proposed to the problem of
renormalon contributions, which hampered progress in this field in the late
1970s. Practical schemes for summation of perturbation series are described for
a coupling constant of order unity and in the strong-coupling limit. An
interpretation of the Borel integral is given for 'non-Borel-summable' series.
High-order corrections to the Lipatov asymptotics are discussed.

categories: hep-ph cond-mat.other hep-th math-ph math.MP


title:
Calculable lepton masses, seesaw relations and four neutrino mixings in
  a 3-3-1 model with extra U(1) symmetry

abstract:
  We propose a scheme in that the masses of the heavier leptons obey seesaw
type relations. The light lepton masses, except the electron and the electron
neutrino ones are generated by one loop level radiative corrections. We work in
a version of the 3-3-1 electroweak model that predicts singlets (charged and
neutral) of heavy leptons beyond the known ones. An extra U(1)_Omega symmetry
is introduced in order to avoid the light leptons get masses at the tree level.
The electron mass induces an explicit symmetry breaking at U(1). We discuss
also the mixing matrix among four neutrinos. The new energy scale required is
not higher than a few TeV.


title: Squark and Gluino Production with Jets

abstract:
  We present cross section predictions for squark and gluino production at the
LHC, in association with up to two additional hard jets. These cross sections
can be very large in comparison to the inclusive Born rates. Because hadron
collider experiments utilize hard jets in the reconstruction of cascade decays
or as a way to separate squark and gluino production, the understanding of
these processes is crucial. We show to what degree hard jet radiation can be
described by shower algorithms and point out how tuning these showers, for
example to top quark pair production, could help reduce theoretical
uncertainties for new physics searches at the LHC.


title:
Cutoff-independent regularization of four-fermion interactions for color
  superconductivity

abstract:
  We implement a cutoff-independent regularization of four-fermion interactions
to calculate the color-superconducting gap parameter in quark matter. The
traditional cutoff regularization has difficulties for chemical potentials \mu
of the order of the cutoff \Lambda, predicting in particular a vanishing gap at
\mu \sim \Lambda. The proposed cutoff-independent regularization predicts a
finite gap at high densities and indicates a smooth matching with the weak
coupling QCD prediction for the gap at asymptotically high densities.


title:
Study on production of exotic $0^+$ meson $D_{sJ}^{*}(2317)$ in decays
  of $\psi(4415)$

abstract:
  The newly observed $D_{sJ}^*$ family containing $D_{sJ}^{*}(2317)$,
$D_{sJ}(2460)$ and $D_{sJ}(2632)$ attracts great interests. Determining their
structure may be important tasks for both theorists and experimentalists. In
this work we use the heavy quark effective theory (HQET) and a non-relativistic
model to evaluate the production rate of $D_{sJ}^{*}(2317)$ from the decays of
$\psi(4415)$, and we find that it is sizable and may be observed at BES III and
CLEO, if it is a p-wave excited state of $D_s(1968)$. Unfortunately, the other
two members of the family cannot be observed through decays of charmonia,
because of the constraints from the final state phase space.


title: Probing MeV Dark Matter at Low--Energy $e^+e^-$ Colliders

abstract:
  It has been suggested that the annihilation of Dark Matter particles \chi
with mass between 0.5 and 20 MeV into e^+e^- pairs could be responsible for the
excess flux of 511 keV photons coming from the central region of our galaxy
that has been detected by the IINTEGRAL satellite. The simplest way to achieve
the required cross section for \chi pair annihilation while respecting existing
constraints is to introduce a new vector boson U with mass M_U below a few
hundred MeV. In this Letter we point out that over most of the allowed
parameter space, the process e^+e^- to U \gamma, followed by the decay of U
into either an e^+e^- pair or into an invisible (\nu \bar \nu or \chi \bar
\chi) channel, should lead to signals that can be detected by the B-factory
experiments BaBar and Belle. A smaller, but still substantial, region of
parameter space can also be probed at the \Phi factory DAFNE.


title: Recursion relations, Helicity Amplitudes and Dimensional Regularization

abstract:
  Using the method of on-shell recursion relations we compute tree level
amplitudes including D-dimensional scalars and fermions. These tree level
amplitudes are needed for calculations of one-loop amplitudes in QCD involving
external quarks and gluons.


title: Joint resummation for heavy quark production

abstract:
  We present the joint threshold and recoil resummed transverse momentum
distributions for heavy quark hadroproduction, at next-to-leading logarithmic
accuracy. We exhibit their dependence on the production channel and the color
configurations, and compare these distributions to eachother and to NLO.


title: Local thermalization in d + Au collisions

abstract:
  The extent of a locally equilibrated parton plasma in d + Au collisions at
sqrt(s_NN) = 200 GeV is investigated as a function of centrality in a
nonequilibrium-statistical framework. Based on a three-sources model,
analytical solutions of a relativistic diffusion equation are in precise
agreement with recent data for charged-particle pseudorapidity distributions.
The moving midrapidity source indicates the size of the local thermal
equilibrium region after hadronization. In central d + Au collisions it
contains 19% of the produced particles.


title: Two loop correction to the Gribov mass gap equation in Landau gauge QCD

abstract:
  We determine the two loop correction to Gribov's mass gap equation for
quantum chromodynamics in the Landau gauge in the MSbar scheme by computing the
two loop correction to the horizon condition derived from Zwanziger's local
renormalizable Lagrangian which incorporates the Gribov parameter. We verify
that with the explicit result, the two loop ghost propagator is enchanced in
the infrared.


title: J/Psi and Drell-Yan pair production on nuclear targets

abstract:
  We estimate the energy losses in the cases of J/Psi and l^+l^- pair
production on nuclear targets in terms of effective change of the initial beam
energy. Our phenomenological results are in reasonable agreement with
Theoretical calculations.


title: Weak Phases and CP Violation

abstract:
  Time-dependent CP asymmetries in $B^0$ decays from interference of
$B^0$-$\bar B^0$ mixing and $b\to c\bar cs, u\bar ud, sq\bar q$, and direct
asymmetries from interference of $b\to c\bar us$ and $b\to u\bar cs$ are
studied, improving errors in the weak phases $\beta$ and $\gamma$ to $\pm
1^\circ$ and $\pm 7^\circ$, respectively. Two kinds of tests for New Physics
are discussed: 1. Deviations of asymmetries in $b\to sq\bar q$ decays from
$\sin 2\beta\sin\Delta mt$. 2. Violation of a sum rule for direct asymmetries
in $B\to K\pi$.


title: Tree-unitarity bounds for THDM Higgs masses revisited

abstract:
  We have reconsidered theoretical upper bounds on the scalar boson masses
within the two-Higgs-doublet model (THDM), employing the well-known technical
condition of tree-level unitarity. Our treatment provides a modest extension
and generalization of some previous results of other authors. We present a
rather detailed discussion of the solution of the relevant inequalities and
offer some new analytic formulae as well as numerical values for the Higgs mass
bounds in question. A comparison is made with the earlier results on the
subject that can be found in the literature.


title:
A sign change of the moment at $n=0$ of the polarized structure function
  $g_1^{p}$

abstract:
  The sum rule for the structure function $g_1^{p}$ which is related to the
cross section of the photo-production is used to show that a sign change of the
integral corresponding to the appropriately defined moment at $n=0$ where the
integral is cut at the point $x=x_c(Q^2)$ occurs at very small $Q^2$ near
$Q^2\sim 0.09$(GeV/c)$^2$ and $x_c\sim 0.024$. This fact shows that the origin
of the sign difference between the Ellis-Jaffe sum rule and the
Drell-Hearn-Gerasimov sum rule lies in the rapid change of the elastic
contribution at low $Q^2$ which is compensated by the inelastic contribution to
satisfy the sum rule at $n=0$. Hence it occurs at very small $Q^2$.


title: Evidence for In-Medium Changes of Four-Quark Condensates

abstract:
  Utilizing the QCD sum rule approach to the behavior of the omega meson in
nuclear matter we derive evidence for in-medium changes of particular
four-quark condensates from the recent CB-TAPS experiment for the reaction
gamma + A -> A' + omega (-> pi0 gamma) with A = Nb and LH2.


title:
Automated computation of spin- and colour-correlated Born matrix
  elements

abstract:
  I report on an implementation of an algorithm for the automated numerical
calculation of spin- and colour-correlated Born matrix elements in QCD. These
spin- and colour-correlated matrix elements are needed for NLO calculations in
combination with the subtraction method. Both massless and massive quarks are
considered. There are no restrictions on the number of external particles. As a
trivial sub-case, the algorithm also applies to Born matrix elements without
any correlations. These are sufficient for leading order calculations.


title:
About influence of the deuteron electric and magnetic plarizabities on
  measurement of the deuteron EDM in a storage ring

abstract:
  In the present paper influence of tensor electric and magnetic
polarizabilities on spin evolution in the resonance deuteron EDM experiment is
considered in details.
  It is shown that besides EDM the electric and magnetic polarizabilities also
contribute to the vertical spin component P_3. Moreover, the electric
polarizability contributes to the P_3 component even when the deuteron EDM is
supposed to be zero and thereby the electric polarizability can imitate the EDM
contribution. It is shown that unlike the vertical component of the spin P_3
the component P_{33} of polarization tensor does not contain contribution from
the electric polarizability, whereas contribution from the magnetic
polarizability reveals only when the deuteron EDM differs from zero.
  Moreover, it is also shown that when the angle $\vartheta$ between the spin
direction and the vertical axis meets the condition $\sin
\vartheta=\sqrt{{2/3}}$ ($\cos \vartheta=\sqrt{{1/3}}$), the initial value of
$P_{33}$ appears $P_{33}(0)=0$. As a result, EDM contribution to the measured
signal linearly growth in time starting from zero that is important for
measurements.
  Therefore, measurement of the P_{33} component of deuteron tensor
polarization seems to be of particular interest, especially because the nonzero
component P_{33} appearance on its own indicates the EDM presence (in contrast
to the P_3 component, which appearance can be aroused by the tensor electric
polarizability, rather than EDM).


title:
Cosmological Supersymmetry Breaking and the Power of the Pentagon: A
  Model of Low Energy Particle Physics

abstract:
  I present a low energy Lagrangian implementing the idea of Cosmological SUSY
breaking (CSB). The model predicts ${\rm tan}\beta \sim 1$, and incorporates a
new mechanism for breaking of $SU(2)\times U(1)$. The Higgs mass is determined
by new physics and can evade the bounds of the MSSM. The model resolves the CP
and flavor problems of SUSY. The up quark mass is non-vanishing. An axion-like
particle, with TeV scale decay constant, appears inevitably. Such a particle is
experimentally ruled out if it has conventional QCD axion couplings. The
problem {\it may} be avoided by adding dimension 5 operators, which explicitly
break the axial symmetry, but this probably introduces a strong CP problem.


title:
Quark-antiquark bound state equation in the Wilson loop approach with
  minimal surfaces

abstract:
  The quark-antiquark gauge invariant Green function is studied through its
dependence on Wilson loops. The latter are saturated, in the large Nc limit and
for large contours, by minimal surfaces. A covariant bound state equation is
derived which in the center-of-mass frame and at equal-times takes the form of
a Breit-Salpeter type equation. The large-distance interaction potentials
reduce in the static case to a confining linear vector potential. In general,
the interaction potentials involve contributions having the structure of flux
tube like terms.


title:
The QCD analysis of hadron-antihadron -> gamma^* gamma in the forward
  region and related processes

abstract:
  A QCD analysis of the reactions A B -> gamma^* gamma and gamma^* gamma -> A B
in the forward region shows that they can be factorized in a way which is quite
similar to the frameword developped for deeply virtual Compton scattering. The
generalized parton distributions (GPDs) related to this latter process being
replaced by new non perturbative hadronic matrix elements, the transition
distribution amplitudes (TDAs).


title: $\theta$-dependence of QCD at Finite Isospin Density

abstract:
  We probe the $\theta$-dependence of QCD at finite isospin chemical potential
$\mu_I$ using the effective chiral Lagrangian approach. The phase diagram in
the $\theta$, $\mu_I$ plane is constructed and described in detail in terms of
chiral and pion condensates. The physics at $\theta ~ \pi$ is investigated in
both the normal and superfluid phase. Finally, the behaviour of the gluon
condensate at finite $\mu_I$ is computed.


title: QCD Correlators at Large NC

abstract:
  This talk explores the spin--1 correlators up to O(alpha_s) through a large
NC resonance theory. The phenomenological analyses of this kind must take these
corrections into account since they produce a larger impact than the first OPE
condensates. It is also necessary to separate low and high energy regimes;
fixing the parameters of the lightest multiplets through perturbative QCD
arguments is unfair and introduces errors in the determination of the
condensates and resonance parameters. This separation of regimes improves our
understanding of the Minimal Hadronical Approximation. The study at O(alpha_s)
already allows discerning between different hadronical models, where the
Regge-like mass spectrum shows the best agreement to phenomenology.


title: The Minimal Composite Higgs Model and Electroweak Precision Tests

abstract:
  A complete analysis of the electroweak precision observables is performed
within a recently proposed minimal composite Higgs model, realized as a
5-dimensional warped compactification. In particular, we compute Z->bb and the
one-loop correction to the rho parameter. We find that oblique data can be
easily reproduced without a significant amount of tuning in the parameters of
the model, while Z->bb imposes a stronger constraint. As a consequence of the
latter, some of the new fermionic resonances must have mass around 4 TeV, which
corresponds to an electroweak fine tuning of a few percent. Other resonances,
such as Z', can be lighter in sizeable portions of the parameter space. We
discuss in detail the origin of the Z->bb constraint and we suggest several
possible avenues beyond the minimal model for weakening it.


title:
Alternative approaches to transversity: how convenient and feasible are
  they?

abstract:
  The complete knowledge of the nucleon spin structure at leading twist
requires also addressing the transverse spin distribution of quarks, or
transversity, which is yet unexplored because of its chiral-odd nature.
Elaborating strategies to extract it from (spin) asymmetry data represents a
unique opportunity to explore more generally the transverse spin structure of
the nucleon and the transverse momentum dynamics of partons inside it. Here, we
critically review some of the most promising approaches.


title:
Establishing neutrino mass hierarchy and CP violation by two identical
  detectors with different baselines using the J-PARC neutrino beam

abstract:
  We discuss how and to what extent one can determine the neutrino mass
hierarchy, normal or inverted, and at the same time uncover CP violation in the
lepton sector by using two identical detectors with different baselines in
neutrino oscillation experiments using low energy superbeam from the J-PARC
facility.


title: Quark Spectrum above but near Critical Temperature of Chiral Transition

abstract:
  We explore the quark properties at finite temperature near but above the
critical temperature of the chiral phase transition. We investigate the effects
of the precursory soft mode of the phase transition on the quark dispersion
relation and the spectral function. It is found that there appear novel
excitation spectra of quasi-quarks and quasi-antiquarks with a three-peak
structure, which are not attributed to the hard-thermal-loop approximation. We
show that the new spectra originate from the mixing between a quark
(anti-quark) and an anti-quark hole (quark hole) caused by a ``resonant
scattering'' of the quasi-fermions with the thermally-excited soft mode which
has a small but finite excitation energy.


title: Property of cn - nbar cbar System in U(12)-Scheme and X(3872),Y(3940)

abstract:
  The properties of four quark cn - nbar cbar states are investigated as cn
di-quark and nbar cbar di-antiquark system in U(12)-classification scheme of
hadrons. We consider the negative-parity di-quark and di-antiquark in ground
states, and the properties of X(3872) and Y(3940) are consistent, respectively,
with those of the JPC=1++ and 2++ states from these negative-parity di-quark
and di-antiquark. Their narrow-widths are explained from an orthogonality of
spinor wave functions. The properties of ground-state cs - sbar cbar system are
also predicted in this scheme.


title:
Form factors of the Kmu3 decay in the spectator approximation of the
  Standard Model

abstract:
  We have calculated the parameter Ksi(0)=f-(0)/f+(0) of the Kmu3 decay in the
spectator approximation of the Standard Model. It was obtained that Ksi(0) ~
-0.02.


title: Soft Leptogenesis in Higgs Triplet Model

abstract:
  We consider the minimal supersymmetric triplet seesaw model as the origin of
neutrino masses and mixing as well as of the baryon asymmetry of the Universe,
which is generated through soft leptogenesis employing a CP violating phase and
a resonant behavior in the supersymmetry breaking sector. We calculate the full
gauge--annihilation cross section for the Higgs triplets, including all
relevant supersymmetric intermediate and final states, as well as
coannihilations with the fermionic superpartners of the triplets. We find that
these gauge annihilation processes strongly suppress the resulting lepton
asymmetry. As a consequence of this, successful leptogenesis can occur only for
a triplet mass at the TeV scale, where the contribution of soft supersymmetry
breaking terms enhances the CP and lepton asymmetry. This opens up an
interesting opportunity for testing the model in future colliders.


title:
Study of FCNC mediated Z boson effect in the semileptonic rare baryonic
  decays $\Lambda_b \to \Lambda l^+ l^- $

abstract:
  We study the effect of the FCNC mediated $Z$ boson in the rare semileptonic
baryonic decays $\Lambda_b \to \Lambda l^+ l^-$. We consider the model where
the standard model fermion sector is extended by an extra vector like down
quark, as a consequence of which it allows CP violating Z mediated flavor
changing neutral current at the tree level. We find that due to this
non-universal $Zbs $ coupling, branching ratios of the rare semileptonic
$\Lambda_b$ decays are enhanced reasonably from their corresponding standard
model values and the zero point of the forward backward asymmetry for
$\Lambda_b \to \Lambda \mu^+ \mu^-$ is shifted to the left.