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

abstract:
  In an extension of the Nambu-Jona-Lasinio model where the quarks interact
with the temporal gluon field, represented by the Polyakov loop, we explore the
relation between the deconfinement and chiral phase transitions. The effect of
Polyakov loop dynamics on thermodynamic quantities, on the phase structure at
finite temperature and baryon density and on various susceptibilities is
presented. Particular emphasis is put on the behavior and properties of the
fluctuations of the (approximate) order parameters and their dependence on
temperature and net--quark number density. We also discuss how the phase
structure of the model is influenced by the coupling of the quarks to the
Polyakov loop.


title: Hard Interactions of Quarks and Gluons: a Primer for LHC Physics

abstract:
  In this review article, we develop the perturbative framework for the
calculation of hard scattering processes. We undertake to provide both a
reasonably rigorous development of the formalism of hard scattering of quarks
and gluons as well as an intuitive understanding of the physics behind the
scattering. We emphasize the importance of logarithmic corrections as well as
power counting of the strong coupling constant in order to understand the
behavior of hard scattering processes. We include "rules of thumb" as well as
"official recommendations", and where possible seek to dispel some myths.
Experiences that have been gained at the Fermilab Tevatron are recounted and,
where appropriate, extrapolated to the LHC.


title: A three-parameter model for the neutrino mass matrix

abstract:
  Using the type-II seesaw mechanism with three Higgs doublets phi_alpha (alpha
= e, mu, tau) and four Higgs triplets, we build a model for lepton mixing based
on a 384-element horizontal symmetry group, generated by the permutation group
S_3 and by six Z_2 transformations. The charged-lepton mass matrix is diagonal;
the symmetries of the model would require all the three masses m_alpha to be
equal, but different vacuum expectation values of the phi_alpha allow the
m_alpha to split. The number of parameters in the Majorana neutrino mass matrix
m_nu depends on two options: full breaking of the permutation group S_3, or
leaving a mu--tau interchange symmetry intact; and hard or spontaneous
violation of CP. We discuss in detail the case with the minimal number of three
parameters, wherein m_nu is real, symmetric under mu--tau interchange, and has
equal diagonal elements. In that case, CP is conserved in lepton mixing,
atmospheric neutrino mixing is maximal, and theta_{13} = 0; moreover, the type
of neutrino mass spectrum and the absolute neutrino mass scale are sensitive
functions of the solar mixing angle.


title: On the Equation of State of the Gluon Plasma

abstract:
  We consider a local, renormalizable, BRST-invariant action for QCD in Coulomb
gauge that contains auxiliary bose and fermi ghost fields. It possess a
non-perturbative vacuum that spontaneously breaks BRST-invariance. The vacuum
condition leads to a gap equation that introduces a mass scale. Calculations
are done to one-loop order in a perturbative expansion about this vacuum. They
are free of the finite-$T$ infrared divergences found by Lind\'{e} and which
occur in the order $g^6$ corrections to the Stefan-Boltzmann equation of state.
We obtain a finite result for these corrections.


title: Azimuthal angle decorrelation of Mueller-Navelet jets at NLO

abstract:
  In this contribution we study azimuthal angle decorrelation in inclusive
dijet cross sections taking into account the next-to-leading (NLO) corrections
to the BFKL kernel while keeping the jet vertices at leading order. We show how
the angular decorrelation for jets with a wide relative separation in rapidity
largely decreases when the NLO corrections are included.


title:
Baryon asymmetry from hypermagnetic helicity in dilaton hypercharge
  electromagnetism

abstract:
  The generation of the baryon asymmetry of the Universe (BAU) from the
hypermagnetic helicity, the physical interpretation of which is given in terms
of hypermagnetic knots, is studied in inflationary cosmology, taking into
account the breaking of the conformal invariance of hypercharge electromagnetic
fields through both a coupling with the dilaton and that with a pseudoscalar
field. It is shown that if the electroweak phase transition (EWPT) is strongly
first order and the present amplitude of the generated magnetic fields on the
horizon scale is sufficiently large, a baryon asymmetry with a sufficient
magnitude to account for the observed baryon to entropy ratio can be generated.


title:
Search for Bottom Counterparts of X(3872) and Y(4260) via
  $\pi^+\pi^-\Upsilon$

abstract:
  The X(3872) and Y(4260), both discovered in $\pi^+\pi^- J/\psi$ mode, are
rather unusual: $X_c\equiv X(3872)$ is very narrow, while $Y_c \equiv Y(4260)$
has large $Y_c\to \pi^+\pi^-J/\psi$ width. Many models for their composition
have been suggested, but perhaps discovering their bottom counterparts could
shed much light on the issue. The narrow state, $X_b$ may be searched for at
the Tevatron via $p\bar p \to \pi^+\pi^-\Upsilon + X$, with the LHC much more
promising. The state $Y_b$ can be searched for at B factories via radiative
return $e^+e^- \to \gamma_{\rm ISR} + \pi^+\pi^-\Upsilon$ on $\Upsilon(5S)$, or
by $e^+e^- \to \pi^+\pi^-\Upsilon$ direct scan.


title:
Probing New Physics in $B_s$ and $D$ mixings, and $A_{\rm CP}(B^+ \to
  J/\psi K^+)$

abstract:
  A 4th generation could be consistent with the recently measured $\Delta
m_{B_s}$ as well as ${\cal B}(b\to s\ell^+\ell^-)$, which are SM-like, but
generate large $\sin2\Phi_{B_s} \simeq -0.5$ to -0.7. The sign is determined by
the hint for New Physics in CPV measurements in charmless B decays. The
$4\times 4$ unitarity allows one to connect to all processes involving flavor.
Fixing $V_{t'b}$, $V_{t's}$ and $V_{t'd}$ by $Z\to b\bar b$, $b\to s$ and $s\to
d$ processes, we predict $D$ mixing to be close to the current bound. As a
further corollary, we suggest that $A_{\rm CP}(B^+ \to J/\psi K^+)$ could be at
1% level or higher, where we give plausibility of an associated strong phase.
Our predictions can be tested in the near future.


title: Penguin amplitudes in hadronic B decays: NLO spectator scattering

abstract:
  We present results on the NLO (alpha_s^2) spectator-scattering corrections to
the topological penguin amplitudes for charmless hadronic two-body B-decays in
QCD factorization. The corrections can be sizable for the colour-suppressed
electroweak penguin amplitudes alpha_{4,EW}^p but otherwise are numerically
small. Our results explicitly demonstrate factorization at this order. To
assess the phenomenological viability of the framework, we consider
penguin-to-tree ratios in the penguin-dominated pi K system and find agreement
to the expected precision (i.e., a power correction).


title:
Graviton Resonances in E+ E- -> MU+ MU- at Linear Colliders with
  Beamstrahlung and ISR Effects

abstract:
  Electromagnetic radiation emitted by the colliding beams is expected to play
an important role at the next generation of high energy e^+ e^- linear
collider(s). Focusing on the simplest process e+e- -> mu+ mu-, we show that
radiative effects like initial state radiation (ISR) and beamstrahlung can lead
to greatly-enhanced signals for resonant graviton modes of the Randall-Sundrum
model.


title: Lectures on multi-particle production in the Glasma

abstract:
  In the Color Glass Condensate (CGC) effective field theory, colliding sheets
of Colored Glass form a strongly interacting, non-equilibrium state called the
Glasma. How Colored Glass shatters to form the Glasma, the properties of the
Glasma, and how the Glasma thermalizes into a Quark Gluon Plasma(QGP) are
questions of central interest in understanding the properties of the strongly
interacting matter produced in heavy ion collisions. We argue that these
questions can be addressed in the framework of field theories with strong time
dependent external sources. Albeit such field theories are non-perturbative for
arbitrarily weak coupling, moments of the multiplicity distribution can be
computed systematically in powers of the coupling constant. We demonstrate that
the average multiplicity can be (straightforwardly) computed to leading order
in the coupling and (remarkably) to next-to-leading order as well. We relate
our formalism to results from previous 2+1 and 3+1 dimensional numerical
simulations of the Glasma fields. The expanding Glasma is unstable; small
fluctuations in the initial conditions grow exponentially with the square root
of the proper time. Whether this explosive growth leads to early thermalization
in heavy ion collisions requires at present a better understanding of these
fluctuations on the light cone. In the final lecture, motivated by recent work
of Bialas and Jezabek, we discuss the widely observed phenomenon of limiting
fragmentation in the CGC framework.


title: Connection between the Sivers function and the anomalous magnetic moment

abstract:
  The same light-front wave functions of the proton are involved in both the
anomalous magnetic moment of the nucleon and the Sivers function. Using the
diquark model, we derive a simple relation between the anomalous magnetic
moment and the Sivers function, which should hold in general with good
approximation. This relation can be used to provide constraints on the Sivers
single spin asymmetries from the data on anomalous magnetic moments. Moreover,
the relation can be viewed as a direct connection between the quark orbital
angular momentum and the Sivers function.


title:
Hadron Optics in Three-Dimensional Invariant Coordinate Space from
  Deeply Virtual Compton Scattering

abstract:
  The Fourier transform of the deeply virtual Compton scattering amplitude
(DVCS) with respect to the skewness parameter \zeta= Q^2/ 2 p.q can be used to
provide an image of the target hadron in the boost-invariant variable \sigma,
the coordinate conjugate to light-front time \tau=t+ z/ c. As an illustration,
we construct a consistent covariant model of the DVCS amplitude and its
associated generalized parton distributions using the quantum fluctuations of a
fermion state at one loop in QED, thus providing a representation of the
light-front wavefunctions of a lepton in \sigma space. A consistent model for
hadronic amplitudes can then be obtained by differentiating the light-front
wavefunctions with respect to the bound-state mass. The resulting DVCS helicity
amplitudes are evaluated as a function of \sigma and the impact parameter \vec
b_\perp, thus providing a light-front image of the target hadron in a
frame-independent three-dimensional light-front coordinate space. Models for
the LFWFs of hadrons in (3+1) dimensions displaying confinement at large
distances and conformal symmetry at short distances have been obtained using
the AdS/CFT method. We also compute the LFWFs in this model in invariant three
dimensional coordinate space. We find that in the models studied, the Fourier
transform of the DVCS amplitudes exhibit diffraction patterns. The results are
analogous to the diffractive scattering of a wave in optics where the
distribution in \sigma measures the physical size of the scattering center in a
one-dimensional system.


title:
Study on the Form Factors at Effective Vertices of Diqarks Interacting
  with Gauge Bosons

abstract:
  The diquark structure in baryons is commonly accepted as a reasonable
approximation which can much simplify the picture and reduce the length of
calculations. However, a diquark by no means is a point-like particle, even
though it is treated as a whole object. Therefore, to apply the diquark picture
to the phenomenological calculations, at the effective vertices for the
diquark-gauge boson interactions, suitable form factors must be introduced to
compensate the effects caused by the inner structure of the diquark. It is
crucial to derive the appropriate form factors for various interactions. In
this work, we use the Bethe-Salpeter equation to derive such form factors and
numerically evaluate their magnitudes.


title:
Topology and confinement at T \neq 0 : calorons with non-trivial
  holonomy

abstract:
  In this talk, relying on experience with various lattice filter techniques,
we argue that the semiclassical structure of finite temperature gauge fields
for T < T_c is dominated by calorons with non-trivial holonomy. By simulating a
dilute gas of calorons with identical holonomy, superposed in the algebraic
gauge, we are able to reproduce the confining properties below T_c up to
distances r = O(4 fm} >> \rho (the caloron size). We compute Polyakov loop
correlators as well as space-like Wilson loops for the fundamental and adjoint
representation. The model parameters, including the holonomy, can be inferred
from lattice results as functions of the temperature.


title: Hiding the Higgs at the LHC

abstract:
  We study a simple extension of the standard model where scalar singlets that
mix with the Higgs doublet are added. This modification to the standard model
could have a significant impact on Higgs searches at the LHC. The Higgs doublet
is not a mass eigenstate and therefore the expected nice peak of the standard
model Higgs disappears. We analyze this scenario finding the required
properties of the singlets in order to make the Higgs "invisible" at the LHC.
In some part of the parameter space even one singlet could make the discovery
of the SM Higgs problematic. In other parts, the Higgs can be discovered even
in the presence of many singlets.


title:
An alternative parametrization of the pion form factor and the mass and
  width of rho(770)

abstract:
  In order to reveal possible mass shifts of the vector mesons in a dense
strongly interacting medium presumably created in high energy heavy ion
collisions it is necessary to know their free masses reliably. The rho(770)
mass quoted in the last two editions of the Review of Particle Physics is
significantly larger than the values quoted in previous editions. The new value
is mostly influenced by the results of recent experiments CMD-2 and SND at the
VEPP-2M e+e- collider at Novosibirsk. We show that the values of the mass and
width of the rho(770) meson measured in the e+e- -> pi+pi- annihilation depend
crucially on the parametrization used for the pion form factor. We propose a
parametrization of the rho(770) contribution to the pion form factor based on
the running mass calculated from a single-subtracted dispersion relation and
compare it with the parametrization based on the formula of Gounaris and
Sakurai used recently by the CMD-2 collaboration. We show that our
parametrization gives equally good or better fits when applied to the data of
the CMD-2, SND, and KLOE collaborations, but yields much smaller values of the
rho(770) mass, consistent with the photoproduction and hadronic reactions
results. Our fit to the KLOE data becomes exceptionally excellent (confidence
level of 99.88%) if an energy shift of about 2 MeV in the rho-omega region is
allowed.


title: Quark-Lepton Symmetry In Five Dimensions

abstract:
  We construct a complete five dimensional Quark-Lepton symmetric model, with
all fields propagating in the bulk. The extra dimension forms an $S^1/Z_2\times
Z_2'$ orbifold with the zero mode fermions corresponding to standard model
quarks localised at one fixed point. Zero modes corresponding to
left(right)-chiral leptons are localised at (near) the other fixed point. This
localisation pattern is motivated by the symmetries of the model. Shifting the
right-handed neutrinos and charged leptons slightly from the fixed point
provides a new mechanism for understanding the absence of relations of the type
$m_e=m_u$ or $m_e=m_d$ in Quark-Lepton symmetric models. Flavour changing
neutral currents resulting from Kaluza Klein gluon exchange, which typically
arise in the quark sector of split fermion models, are suppressed due to the
localisation of quarks at one point. The separation of quarks and leptons in
the compact extra dimension also acts to suppress the proton decay rate. This
permits the extra dimension to be much larger than that obtained in a previous
construct, with the bound $1/R\gtrsim30$ TeV obtained.


title: Heavy Hybrid mesons Masses

abstract:
  We estimate the ground state masses of the heavy hybrid mesons using a
phenomenological QCD-type potential. 0^{- -},1^{- -},0^{- +},1^{- +} and 0^{+
-} J^{PC} states are considered.


title: The Gravitino-Overproduction Problem in Inflaton Decay

abstract:
  We show that the gravitino-overproduction problem is prevalent among
inflation models in supergravity. An inflaton field generically acquires
(effective) non-vanishing auxiliary field, if the Kahler potential is
non-minimal. The inflaton field then decays into a pair of the gravitinos,
thereby severely constraining many of the inflation models especially in the
case of the gravity-mediated SUSY breaking.


title: Neutrino spin-flavor oscillations in rapidly varying magnetic fields

abstract:
  The general formalism for the description of neutrino oscillations in
arbitrary rapidly varying external fields is elaborated. We obtain the new
effective Hamiltonian which determines the evolution of the averaged neutrino
wave function. The general technique is applied to the neutrino oscillations in
rapidly varying magnetic fields. We evaluate the transition probabilities of
the neutrino spin-flavor oscillations in magnetic fields of the Sun and compare
them with the numerical solutions of the Schroedinger equation with the exact
Hamiltonian.


title: Inclusive Semi-leptonic B Decays to order 1/m_b^4

abstract:
  We give a systematic way to compute higher orders in the 1/m_b expansion in
inclusive semi-leptonic decays at tree level. We reproduce the known 1/m_b^3
terms and compute the 1/m_b^4 terms at tree level. The appearing
non-perturbative parameters and the impact on the determination of V_{cb} are
discussed.


title: On Effective Charges, Event shapes and the size of Power Corrections

abstract:
  We introduce and motivate the method of effective chsrges, and consider how
to implement an all-orders resummation of large kinematical logarithms in this
formalism. Fits for QCD \Lambda and power corrections are performed for the
e+e- event shape observables 1-thrust and heavy jet mass, and somewhat smaller
power corrections are found than in the usual approach employing the ``physical
scale'' choice.


title: Gluon-induced W-boson pair production at the LHC

abstract:
  Pair production of W bosons constitutes an important background to Higgs
boson and new physics searches at the Large Hadron Collider LHC. We have
calculated the loop-induced gluon-fusion process gg -> W*W* -> leptons,
including intermediate light and heavy quarks and allowing for arbitrary
invariant masses of the W bosons. While formally of next-to-next-to-leading
order, the gg -> W*W* -> leptons process is enhanced by the large gluon flux at
the LHC and by experimental Higgs search cuts, and increases the
next-to-leading order WW background estimate for Higgs searches by about 30%.
We have extended our previous calculation to include the contribution from the
intermediate top-bottom massive quark loop and the Higgs signal process. We
provide updated results for cross sections and differential distributions and
study the interference between the different gluon scattering contributions. We
describe important analytical and numerical aspects of our calculation and
present the public GG2WW event generator.


title: Probing QCD dynamics in two-photon interactions at high energies

abstract:
  In this paper the two-photon interactions at high energies are investigated
considering different approaches for the QCD dynamics. In particular, we
calculate the $\gamma^* \gamma^*$ total cross section in different theoretical
approches and present a comparison among the predictions of the BFKL dynamics
at leading and next-to-leading order with those from saturation physics. We
analyze the possibility that the future linear colliders could discriminate
between these different approaches.


title: Quantum corrections to the effective neutrino mass operator in 5D MSSM

abstract:
  We discuss in detail a five-dimensional Minimal Supersymmetric Standard Model
compactified on $S^1/Z_2$ extended by the effective Majorana neutrino mass
operator. We study the evolution of neutrino masses and mixings. Masses and
angles, in particular the atmospheric mixing angle $\theta_{23}$, can be
significantly lowered at high energies with respect to their value at low
energy.


title: On the detectability of the CMSSM light Higgs boson at the Tevatron

abstract:
  We examine the prospects of detecting the light Higgs h^0 of the Constrained
MSSM at the Tevatron. To this end we explore the CMSSM parameter space with
\mu>0, using a Markov Chain Monte Carlo technique, and apply all relevant
collider and cosmological constraints including their uncertainties, as well as
those of the Standard Model parameters. Taking 50 GeV < m_{1/2}, m_0 < 4 TeV,
|A_0| < 7 TeV and 2 < tan(beta) < 62 as flat priors and using the formalism of
Bayesian statistics we find that the 68% posterior probability region for the
h^0 mass lies between 115.4 GeV and 120.4 GeV. Otherwise, h^0 is very similar
to the Standard Model Higgs boson. Nevertheless, we point out some enhancements
in its couplings to bottom and tau pairs, ranging from a few per cent in most
of the CMSSM parameter space, up to several per cent in the favored region of
tan(beta)\sim 50 and the pseudoscalar Higgs mass of m_A\lsim 1 TeV. We also
find that the other Higgs bosons are typically heavier, although not
necessarily much heavier. For values of the h^0 mass within the 95% probability
range as determined by our analysis, a 95% CL exclusion limit can be set with
about 2/fb of integrated luminosity per experiment, or else with 4/fb (12/fb) a
3 sigma evidence (5 sigma discovery) will be guaranteed. We also emphasize that
the alternative statistical measure of the mean quality-of-fit favors a
somewhat lower Higgs mass range; this implies even more optimistic prospects
for the CMSSM light Higgs search than the more conservative Bayesian approach.
In conclusion, for the above CMSSM parameter ranges, especially m_0, either
some evidence will be found at the Tevatron for the light Higgs boson or, at a
high confidence level, the CMSSM will be ruled out.


title: The Z' reconsidered

abstract:
  We consider the extension of the standard model with an arbitrary number of
U(1) gauge fields coupled to baryon-minus-lepton number and/or hypercharge.
Under the assumption that A^b_FB from the LEP1 experiment is an unlucky
fluctuation, we find moderate evidence for the presence of such fields in the
precision electroweak data. A relatively large range of the Higgs boson mass is
allowed. We discuss the phenomenology of the extra U(1) fields.


title: Radiative Kaon Decay in Chiral Perturbation Theory

abstract:
  We analyze the possibility of experimental investigation of new low-energy
relations between the values of resonance masses in the meson form factors and
the differential rate of radiative kaon decay $K^+\to \pi^+ e^+e^-(\mu^+\mu^-
)$ at the current level of the experimental precision. A set of arguments is
listed in favour of that these relations can be a consequence of weak static
interactions in the Standard Model.


title:
Deeply Virtual Compton Scattering on a Photon and Generalized Parton
  Distributions in the Photon

abstract:
  We consider deeply virtual Compton scattering on a photon target, in the
generalized Bjorken limit, at the Born order and in the leading logarithmic
approximation.
  We interpret the result as a factorized amplitude of a hard process described
by handbag diagrams and anomalous generalized parton distributions in the
photon.
  This anomalous part, with its characteristic ln Q2 dependence, is present
both in the DGLAP and in the ERBL regions. As a consequence, these generalized
parton distributions of the photon obey DGLAP-ERBL evolution equations with an
inhomogeneous term.


title: CPT- and Lorentz-symmetry breaking: a review

abstract:
  The breakdown of spacetime symmetries has recently been identified as a
promising candidate signal for underlying physics, possibly arising through
quantum-gravitational effects. This talk gives an overview over various aspects
of CPT- and Lorentz-violation research. Particular emphasis is given to the
interplay between CPT, Lorentz, and translation symmetry, mechanisms for CPT
and Lorentz breaking, and the construction of a low-energy quantum-field
description of such effect. This quantum field framework, called the SME, is
employed to determine possible phenomenological consequences of CPT and Lorentz
violation for neutral-meson interferometry.


title: Probing Active to Sterile Neutrino Oscillations in the LENS Detector

abstract:
  Sterile neutrino conversion in meter scale baselines can be sensitively
probed using monoenergetic, sub-MeV, flavor pure e-neutrinos from an artificial
MCi source and the unique technology of LENS designed to oberve the low energy
solar neutrino spectrum via tagged CC e-neutrino capture in 115-In.
Active-sterile oscillations can be directly observed in the granular LENS
detector itself to critically test and extend resuls of short baseline
accelerator and reactor experiments.


title: OPE Constraints and the Leading Order Hadronic Contribution to (g-2)_mu

abstract:
  OPE constraints are studied as a means of distinguishing between the versions
of the I=1 vector spectral function extracted from (i) inclusive I=1 hadronic
electroproduction cross-sections and (ii) inclusive I=1 hadronic tau decay
data, with the goal of clarifying expectations for the leading order hadronic
contribution to a_mu = (g-2)_mu /2 in the Standard Model. The constraints are
shown to, at present, favor the tau decay data, and hence a Standard Model
prediction for a_mu compatible with the BNL E821 experimental result. The
relative role of the 2pi and 4pi contributions to the discrepancy between the
integrated electroproduction results and the corresponding OPE constraints is
also investigated, and the significance, in this context, of forthcoming
re-measurements of the e^+e^- --> pi^+ pi^- pi^0 pi^0 cross-sections pointed
out.


title: The Joint Extraction of m_s and V_us From Hadronic Tau Decay Data

abstract:
  We discuss the simultaneous determination of m_s and V_us from
flavor-breaking hadronic tau decay sum rules, focussing on weight choices
designed to better control problems associated with the slow convergence of the
relevant integrated D=2 OPE series. The results are found to display improved
stability and consistency relative to those of conventional analyses based on
the ``(k,0) spectral weights''. The results for m_s agree well with those of
recent strange scalar sum rule and strange pseudoscalar sum rule and lattice
analyses. Results for V_us agree within errors with those of
lattice-input-based K_{ell 3} and Gamma [K_{mu 2}]/\Gamma [pi_{mu 2}] analyses.
Very significant error reductions are shown to be expected, especially for
V_us, once improved strange spectral data from the B factory experiments
becomes available.


title: Neutrino Mass, Dark Matter, and Leptogenesis

abstract:
  It is proposed that dark matter is the origin of neutrino mass, thereby
linking inexorably two undisputed (and seemingly unrelated) pieces of evidence
for physics beyond the Standard Model. Leptogenesis at the TeV scale may also
be possible, as well as a measurable contribution to the muon anomalous
magnetic moment.


title:
Identify bottom contribution in non-photonic electron spectra and \vv\
  from \AuAu collisions at RHIC

abstract:
  We present a study on the spectra and elliptic flow v2 for heavy flavor
(charm and bottom) decayed electrons provided the relative contributions of
charm and bottom hadrons from the PYTHIA calculations. We made a simultaneous
fit to both measured non-photonic electron spectra and v2 distributions. The
results suggest that the bottom contribution is not dominant for electron pt<5
GeV/c in the 200 GeV Au+Au collisions.


title: Theoretical investigations on the Y(4260) being an hybrid meson

abstract:
  The new recently experiments at the B-factories yield a renewed interest in
the charm and charmonium spectroscopy. New intriguing states have been
observed, which appear to be non-conventional mesons, such as X(3862) and
Y(4260) and request more theoretical investigations. We will explore the
possibility for the Y(4260) to be a c-cbar-g hybrid meson. Using the
quark-gluon constituent model, we exclude its existence as QE-hybrid meson, and
as mixing of c-cbar-g hybrid with conventional c-cbar meson. We find the only
interpretation as GE-hybrid, decaying in D_(1)-Dbar channels. Then more
experimental studies are needed to confirm the existence of this resonance and
to give its properties.


title:
Tests of the Gravitational Inverse-Square Law below the Dark-Energy
  Length Scale

abstract:
  We conducted three torsion-balance experiments to test the gravitational
inverse-square law at separations between 9.53 mm and 55 micrometers, probing
distances less than the dark-energy length scale $\lambda_{\rm
d}=\sqrt[4]{\hbar c/\rho_{\rm d}}\approx 85 \mu$m. We find with 95% confidence
that the inverse-square law holds ($|\alpha| \leq 1$) down to a length scale
$\lambda = 56 \mu$m and that an extra dimension must have a size $R \leq 44
\mu$m.


title:
Higgs Boson Exempt No-Scale Supersymmetry and its Collider and Cosmology
  Implications

abstract:
  One of the most straightforward ways to address the flavor problem of
low-energy supersymmetry is to arrange for the scalar soft terms to vanish
simultaneously at a scale $M_{c}$ much larger than the electroweak scale. This
occurs naturally in a number of scenarios, such as no-scale models, gaugino
mediation, and several models with strong conformal dynamics. Unfortunately,
the most basic version of this approach that incorporates gaugino mass
unification and zero scalar masses at the grand unification scale is not
compatible with collider and dark matter constraints. However, experimental
constraints can be satisfied if we exempt the Higgs bosons from flowing to zero
mass value at the high scale. We survey the theoretical constructions that
allow this, and investigate the collider and dark matter consequences. A
generic feature is that the sleptons are relatively light. Because of this,
these models frequently give a significant contribution to the anomalous
magnetic moment of the muon, and neutralino-slepton coannihilation can play an
important role in obtaining an acceptable dark matter relic density.
Furthermore, the light sleptons give rise to a large multiplicity of lepton
events at colliders, including a potentially suggestive clean trilepton signal
at the Tevatron, and a substantial four lepton signature at the LHC.


title: Deviation from Bimaximality due to Planck scale effects

abstract:
  We consider the effect of Planck scale operators on neutrino mixing. We
assume that GUT scale operators give rise to degenerate neutrino masses with
bimaximal mixing. Quantum gravity (Planck scale) effects lead to an effective
SU(2)L*U(1) invariant dimension-5 Lagrangian involving neutrino and Higgs
fields. This gives rise to additional terms in the neutrino mass matrix on
electroweak symmetry breaking. These additional terms can be considered as a
perturbation to the GUT scale bi-maximal neutrino mass matrix. We assume that
the gravitational interaction is flavour blind and compute the deviations of
the three neutrino mixing angles due to the Planck scale effects. We find that
the changes in theta13, and theta23 are very small but the change in solar
mixing angle theta12 can be as large as 3.5 degrees.


title: Extension of Renormalizability

abstract:
  Arguments are provided which show that extension of renormalizability in
quantum field theory is possible. A dressed scheme for the perturbation
expansion is proposed. It is proven that in this scheme a nonrenormalizable
interaction becomes renormalizable in the restrictive sense, i.e. its
ultraviolet divergences can be cancelled by a finite number of counterterms
included in the Lagrangian. As an illustration, the renormalization of the
$\pi$-nucleon pseudovector interaction is discussed in some detail.


title: Light-by-light scattering in SANC

abstract:
  In this paper we describe the implementation of the QED process
$\gamma\gamma\to\gamma\gamma$ through a fermion loop into the framework of SANC
system. The computations of this process takes into account non-zero mass of
loop-fermion. We briefly describe additional precomputation modules used for
calculation of massive fermion-box diagrams. We present the covariant and
helicity amplitudes for this process and also some particular cases of $D_0$
and $C_0$ Passarino-Veltman functions. Whenever possible, we compare the
results with those existing in the literature.


title:
Neutrino CP violating parameters from nontrivial quark-lepton
  correlation: a S3xGUT model

abstract:
  We investigate the prediction on the lepton phases in theories with a non
trivial correlation between quark (CKM) and lepton (PMNS) mixing matrices. We
show that the actual evidence, under the only assumption that the correlation
matrix $V^M$ product of $CKM$ and $PMNS$ has a zero in the entry $(1,3)$, gives
us a prediction for the three CP-violating invariants $J$, $S_1$, and $S_2$. A
better determination of the lepton mixing angles will give a strong prediction
of the CP-violating invariants in the lepton sector. These will be tested in
the next generation experiments. To clarify how our prediction works, we show
how a model based on a Grand Unified Theory and the permutation flavor symmetry
$S_3$ predicts $V^M_{13}=0$.


title: On Quasipositronia

abstract:
  Quasipositronia are atoms of simple hydrogenlike structure. They are not
included in periodic table of elements. Examples of such atoms are positronium,
muonium, antimuonium, mu- and pi- mesoatoms, dimuonium and tauonium. Such atoms
as positronium, dimuonium, tauonium, muonium and antimuonium are specially
interesting from the point of view of investigations of fundamental properties
of matter. Their description is rather simple and in many aspects similar to
each other. In this paper energy levels and decay widths of different decay
channels of dimuonium and tauonium has been given. Cross section of production
of these atomic systems in electron positron annihilation has been calculated.
To search these atoms, required experimental conditions for initial beams and
detectors has been found.


title: Renormalization Group Approach towards the QCD Phase Diagram

abstract:
  The idea of the functional renormalization group and one-loop improved
renormalization group flows are reviewed. The associated flow equations and
nonperturbative approximations schemes for its solutions are discussed. These
techniques are then applied to the strong interaction in the framework of an
effective quark meson model which is introduced in great detail. The
renormalization group analysis of the two flavor quark meson model is extended
to finite temperature and quark chemical potential which allows for an analysis
of the chiral phase diagram beyond the mean field approximation.


title: Cosmological CPT Violation, Baryon/Leptogenesis and CMB Polarization

abstract:
  In this paper we study the cosmological CPT-violation and its implications in
baryo/leptogenesis and CMB polarization. We propose specifically a variant of
the models of gravitational leptogenesis. By performing a global analysis with
the Markov Chain Monte Carlo (MCMC) method, we find the current CMB
polarization observations from the three-year WMAP (WMAP3) and the 2003 flight
of BOOMERANG (B03) data provide a weak evidence for our model. However to
verify and especially exclude this type of mechanism for baryo/leptogenesis
with cosmological CPT-violation, the future measurements on CMB polarization
from PLANCK and CMBpol are necessary.


title:
Form Factors from Light-Cone Sum Rules with B-Meson Distribution
  Amplitudes

abstract:
  New sum rules for $B\to \pi,K $ and $B\to \rho,K^*$ form factors are derived
from the correlation functions expanded near the light-cone in terms of B-meson
distribution amplitudes. The contributions of quark-antiquark and
quark-antiquark-gluon components in the B meson are taken into account. Models
for the B-meson three-particle distribution amplitudes are suggested, based on
QCD sum rules in HQET. Employing the new light-cone sum rules we calculate the
form factors at small momentum transfers, including $SU(3)_{fl}$ violation
effects. The results agree with the predictions of the conventional light-cone
sum rules.


title: Determining Neutrino and Supernova Parameters with a Galactic Supernova

abstract:
  We investigate the sensitivity of some of the proposed next-generation
neutrino experiments to a galactic supernova. In particular, we study how well
the supernova parameters (the average energies and luminosities) can be
separated from the unknown neutrino oscillation parameters ($\theta_{13}$ and
the neutrino mass hierarchy). Three types of experiments, all in the 100-kton
class, are compared. These are: a 540 kton water-Cherenkov detector, a 100 kton
liquid Argon detector and a 50 kton scintillator detector. We demonstrate that
practically all of these proposed detectors have the possibility to determine
the hierarchy of the neutrino masses if the angle $\theta_{13}$ is sufficiently
large ($\sin^2(\theta_{13}) > 10^{-4}$) and the hierarchy of the average
energies is larger than about 20%. They can at the same time determine some of
the supernova parameters well. The average energy of the $\nu_\mu$ and
$\nu_\tau$ species can be determined within 5% uncertainty in most of the
parameter space suggested by supernova simulations. The detection of several
separable channels measuring different combinations of charged current and
neutral current processes is crucial for determining the value of $\theta_{13}$
and the hierarchy. However, there are cases where a few of the SN parameters
can be determined rather well even if only the main charged current detection
channel is available.


title:
Supersymmetric NLO QCD Corrections to Resonant Slepton Production and
  Signals at the Tevatron and the LHC

abstract:
  We compute the total cross section and the transverse momentum distribution
for single charged slepton and sneutrino production at hadronic colliders
including NLO supersymmetric and non-supersymmetric QCD corrections. The
supersymmetric QCD corrections can be substantial. We also resum the gluon
transverse momentum distribution and compare our results with two Monte Carlo
generators. We compute branching ratios of the supersymmetric decays of the
slepton and determine event rates for the like-sign dimuon final state at the
Tevatron and at the LHC.


title: Gauge Coupling Unification in Six Dimensions

abstract:
  We compute the one-loop gauge couplings in six-dimensional non-Abelian gauge
theories on the T^2/Z_2 orbifold with general GUT breaking boundary conditions.
For concreteness, we apply the obtained general formulae to the gauge coupling
running in a 6D SO(10) orbifold GUT where the GUT group is broken down to the
standard model gauge group up to an extra U(1). We find that the one-loop
corrections depend on the parity matrices encoding the orbifold boundary
conditions as well as the volume and shape moduli of extra dimensions. When the
U(1) is broken by the VEV of bulk singlets, the accompanying extra color
triplets also affect the unification of the gauge couplings. In this case, the
B-L breaking scale compatible with the gauge coupling unification is sensitive
to the change of the compactification scales.


title: Naturalness of EWSB in NMSSM and Higgs at 100 GeV

abstract:
  Naturalness of electroweak symmetry breaking in the next-to-minimal
supersymmetric model points to scenarios in which the lightest CP-even Higgs
boson has SM-like ZZh coupling and mass m_h ~ 100 GeV and decays partly via h
-> b \bar b but dominantly into two CP-odd Higgs bosons, h -> aa, where m_a <
2m_b so that a -> tau+ tau- (or light quarks and gluons) decays are dominant.
These preferred scenarios correlate well with the observed excess of events at
LEP for m_h ~ 100 GeV.


title:
Topological charge screening and the infrared behavior of the instanton
  density

abstract:
  A new mechanism for suppression of the instanton density in the infrared is
considered. This mechanism is based on the phenomenon of topological charge
screening, which leads to an effective cutoff in the contribution of large
instantons.


title: On the Radiatively Induced Lorentz and CPT Violating Chern-Simons Term

abstract:
  The radiatively induced Lorentz and CPT violating Chern-Simons terms in QED
is calculated based on the recently developed loop regularization method [Y.L.
Wu, Int.J.Mod.Phys.A18 (2003) 5363, hep-th/0209021; Y.L. Wu, Mod.Phys.Lett.A19
(2004) 2191, hep-th/0311082] for quantum field theories. It enables us to make
general comments on the various results in literature and obtain a consistent
result when simultaneously combining the evaluation for the chiral anomaly
which has a unique form once the vector current is kept conserved.


title: Neutrinos in flat extra dimension: towards a realistic scenario

abstract:
  We consider the simple extension of the Standard Model in which an additional
right handed neutrino propagates along a flat extra dimension, while the
Standard Model fields are confined on a 3-brane. The fifth dimension is
$S^1/Z_2$ orbifold compactified. In this scenario, the neutrino mass can be
naturally suppressed. By studying systematically the fundamental parameter
space, we show that the strong phenomenological constraints on mixing angles
between active and sterile neutrinos (especially those derived from the SNO
experiment data) do not conflict with the possibility of generating a realistic
neutrino mass spectrum. As a second step, we explore the possibility of a
successful leptogenesis through the decays of the Kaluza-Klein excitations of
the right handed neutrino.


title: Forty years of acting electron-positron colliders

abstract:
  Around forty years passed from the beginning of operation of the first
electron-positron colliding beam facility VEPP-2 in Institute of Nuclear
Physics (INP), Novosibirsk. Here I described development of electron-positron
colliding beam project in INP, as well as advance of similar projects of the
first generation at LAL, Orsay and at LNF, Frascati.


title: Time-to-Space Conversion in Neutrino Oscillations

abstract:
  We study the neutrino oscillation problem in the framework of the wave packet
formalism. The neutrino state is described by a packet located initially in a
region S (source) and detected in another region D at a distance R from S. We
examine how the oscillation probability as a function of variable R can be
derived from he oscillation probability as a function of time t, the latter
being found by using the Schrodinger equation. We justify the known
prescription "t --> R/c" without referring to a specific form of the neutrino
wave packet and only assuming the finiteness of its support. The effect of the
oscillation damping at large R is revealed. For an illustration, an explicit
expression for the damping factor is obtained using Gaussian packet.


title:
Towards light scalar meson structure in terms of quark and gluon degrees
  of freedom

abstract:
  The origin of the lightest scalar mesons is studied in the framework of
instanton liquid model (ILM) of the QCD vacuum. The impact of vacuum
excitations on the sigma-meson features is analyzed in detail. In particular,
it is noticed that the changes produced in the scalar sector may unexpectedly
become quite considerable in spite of insignificant values of corrections to
the dynamical quark masses and then the medley of sigma-meson and those
excitations may reveal itself as broad resonance states of vitally different
masses.


title: A Global Fit to Scattering Data with NLL BFKL Resummations

abstract:
  We calculate DIS-scheme splitting and coefficient functions for
electromagnetic deep inelastic scattering with small x resummations, as given
by the NLL BFKL equation with running coupling and approximate NLL resummed
impact factors. The resummations are combined with a NLO fixed order expansion,
and the improved quantities thus obtained are stable at small x and
significantly suppressed with respect to LL results. These results are
implemented in a global fit to DIS and related data, and the results compared
to a NLO fixed order DIS-scheme fit and with a previous LL resummed fit. The
NLL resummed fit quality is excellent, and constitutes a marked improvement
over the purely fixed order approach. The input gluon, at Q_0^2=1GeV^2,
obtained from the resummed fit is positive and slightly increasing as x-->0, in
contrast to the result obtained at fixed order. A resummed prediction for the
longitudinal structure function F_L is presented. It is positive definite and
growing with energy at low x and Q^2, where the fixed order results show a
significant perturbative instability.


title: Low scale B-L extension of the Standard Model at the LHC

abstract:
  The fact that neutrinos are massive indicates that the Standard Model (SM)
requires extension. We propose a low energy (<TeV) B-L extension of the SM,
which is based on the gauge group SU(3)_C x SU(2)_L x U(1)_Y x U(1)_{B-L}. We
show that this model provides a natural explanation for the presence of three
right-handed neutrinos in addition to an extra gauge boson and a new scalar
Higgs. Therefore, it can lead to very interesting phenomenological implications
different from the SM results which can be tested at the LHC. Also we analyze
the muon anomalous magnetic moment in this class of models. We show that
one-loop with exchange Z' may give dominant new contribution ~ few x 10^{-11}.


title: Proton Structure Corrections to Hydrogen Hyperfine Splitting

abstract:
  The largest uncertainty in calculations of hydrogen ground-state hyperfine
splitting comes from corrections due to proton stucture. We review these
corrections, with special mention of the inelastic, or polarizability,
corrections which have been recently re-evaluated. Summing up the arguably best
current values for the calculated corrections leaves us 1-2 ppm short of the
experimental data. We speculate how one may explain this shortfall, and along
the way broadly outline the derivations of the relevant formulas, attempting to
explain how certain terms come to appear and commenting on the use of
unsubtracted dispersion relations.


title: Mass splittings in $\Sigma_b$ and $\Sigma_b^*$

abstract:
  The charged $\Sigma_b$ and $\Sigma^*_b$ states have recently been reported by
the CDF Collaboration. The relation of their reported charge-averaged masses to
expectations based on the quark model is reviewed briefly. A relation is proved
among the $\Delta I = 1$ electromagnetic mass differences $\Sigma_1 \equiv
M(\Sigma^+) - M(\Sigma^-)$, $\Sigma^*_1 \equiv M(\Sigma^{*+})- M(\Sigma^{*-})$,
$\Sigma_{b1} \equiv M(\Sigma_b^+) - M(\Sigma_b^-)$, and $\Sigma^*_{b1} \equiv
M(\Sigma_b^{*+}) - M(\Sigma_b^{*-})$. The relation is $\Sigma^*_{b1} -
\Sigma_{b1} = (m_s/m_b)(\Sigma^*_1 - \Sigma_1),$ leading to the expectation
$\Sigma^*_{b1} - \Sigma_{b1} = 0.40 \pm 0.07$ MeV.


title:
The critical surface of the SU(3)_L x SU(3)_R chiral quark model at
  non-zero baryon density

abstract:
  The boundary of the first order chiral phase transition region is studied in
the m_pi-m_K-mu_B space using the one-loop optimized perturbation theory for
the resummation of the perturbative series. Chiral perturbation theory for
mesons and baryons is used for the T=0 parametrization of the model. The
surface of second order transition points bends with increasing mu_B towards
the physical point of the m_pi-m_K mass plane allowing for the existence of the
critical end point in the mu_B-T plane at the physical point. The location and
scaling region of the CEP is explored.


title: BBN And The CBR Probe The Early Universe

abstract:
  Big Bang Nucleosynthesis (BBN) and the Cosmic Background Radiation (CBR)
provide complementary probes of the early evolution of the Universe and of its
particle content. Neutrinos play important roles in both cases, influencing the
primordial abundances of the nuclides produced by BBN during the first 20
minutes, as well as the spectrum of temperature fluctuations imprinted on the
CBR when the Universe is some 400 thousand years old. The physical effects
relevant at these widely separated epochs are reviewed and the theoretical
predictions are compared with observational data to explore the consistency of
the standard models of cosmology and particle physics and to constrain
beyond-the-standard-model physics and cosmology.


title: Towards absolute neutrino masses

abstract:
  Various ways of determining the absolute neutrino masses are briefly reviewed
and their sensitivities compared. The apparent tension between the announced
but unconfirmed observation of the $0\nu\beta\beta$ decay and the neutrino mass
upper limit based on observational cosmology is used as an example of what
could happen eventually. The possibility of a ``nonstandard'' mechanism of the
$0\nu\beta\beta$ decay is stressed and the ways of deciding which of the
possible mechanisms is actually operational are described. The importance of
the $0\nu\beta\beta$ nuclear matrix elements is discussed and their uncertainty
estimated.


title: The light pseudoscalar Higgs boson in NMSSM

abstract:
  We study the associated production of a very light pseudoscalar Higgs boson
with a pair of charginos. The novel signature involves a pair of charged
leptons from chargino decays and a pair of photons from the pseudoscalar Higgs
boson decay, plus large missing energy at the LHC and ILC. The signal may help
us to distinguish the NMSSM from MSSM, provided that the experiment can resolve
the two photons from the decay of the pseudoscalar Higgs boson.


title: Determining the CKM angle gamma with B_c decays

abstract:
  We consider the possibility of extracting the CKM angle $\gamma$ with $B_c$
decays. The modes $B_c^\pm \to (D^0) D_s^\pm \to (K^{*+}K^-) D_s^\pm $ and
$B_c^\pm \to (\bar D^0) D_s^\pm \to (K^{*+}K^-) D_s^\pm $ are found to be well
suited for the extraction of $\gamma$. Since a large number of $B_c$ mesons are
expected to be produced at the LHC, it would be very interesting to explore the
determination of $\gamma$ with these modes.


title:
Test of the reaction mechanism for gamma N -> K Lambda(1520) using the
  polarized photon

abstract:
  We study the reaction mechanism for the photoproduction of the Lambda(1520),
based on an effective Lagrangian approach. We investigate each contribution of
the s-, u-, t-channel processes and contact term, separately. One of the most
characteristic features of this reaction is the contact-term dominance which
governs the photoproduction from the proton, when the K*-exchange contribution
is possibly not too large. We suggest several different ways of the
polarizations and arrangement of the beam and target to make to understand the
role of each contribution separately in future experiments.


title: Study of the Rho-pi Puzzle in Charmonium Decays

abstract:
  The theoretical explanations about the ``Rho-pi puzzle'' in charmonium decays
are reviewed extensively, and the comparison of theoretical predications with
experimental data is made whenever possible. Three methods to estimate the
ratio of the branching fractions of J/psi and psi' decays are also discussed.
It is pointed out that in order to understand the Rho-pi puzzle, and the
dynamics of charmonium decays, systematic studies should be made in theory,
phenomenology and experiment aspects.


title: Bounds on Tensor operator contribution to B_s --> l+ l- gamma

abstract:
  We consider the effect of new physics interactions in the form of tensor
operators on the branching ratio of B_s --> l+ l- gamma where l=e, mu. We find
that the present data on the inclusive branching ratio B --> X_s l+ l- puts a
strong constraint on the new physics tensor couplings and does not allow a
large enhancement in the branching ratio of B_s --> l+ l- gamma beyond its
standard model predictions. Large enhancement in the branching ratio of B_s -->
l+ l- gamma due to new physics in the form of vector/axial-vector,
scalar/pseudoscalar and magnetic dipole operators has already been ruled out.
Thus we conclude that no new physics can provide a large enhancement in the
branching ratio of B_s --> l+ l- gamma and hence it is expected to be observed
in future experiments with a branching ratio close to its standard model
expectation.


title: Effective potential between two gluons from the scalar glueball

abstract:
  Starting from the $0^{++}$ glueball mass and wave function computed from
lattice QCD, we compute the local potential between two constituent gluons.
Since the properties of constituent gluons are still a matter of research, we
allow for them to be either massless, or massive with a mass around 0.7 GeV.
Both pictures are actually used in the literature. When the gluons are
massless, the corresponding local potential is shown to be compatible with a
Cornell form, that is a linear confinement plus a short-range Coulomb part,
with standard values for the flux tube energy density and for the strong
coupling constant. When the gluons are massive, the confining potential is a
saturating one, commonly used to simulate string-breaking effects. These
results fill a gap between lattice QCD and phenomenological models: The picture
of the scalar glueball as a bound state of two constituent gluons interacting
via a phenomenological potential is shown to emerge from pure gauge lattice QCD
computations. Moreover, we show that the allowed potential shape is constrained
by the mass of the constituent gluons.


title: Coupling constants of $D^*D_sK$ and $D_s^*DK$ processes

abstract:
  We calculate the coupling constants of $D^*D_sK$ and $D_s^*DK$ vertices using
the QCD sum rules technique. We compare results obtained in the limit of SU(4)
symmetry and found that the symmetry is broken on the order of 40%.


title: Neutrinos in a Sterile Throat

abstract:
  We consider field-theoretic models of a warped extra dimension with multiple
throats, in which fermions that are singlets of the Standard Model gauge group
propagate in a separate throat from the Standard Model fields, which we call
the sterile throat.
  The singlets mix with Standard Model fields via interactions localized on the
UV brane that connects the two throats. This leads to three, light,
mostly-active, Majorana neutrinos via a higher-dimensional see-saw mechanism,
together with Kaluza-Klein towers of mostly-sterile neutrinos, whose scale is
set by the warp factor in the sterile throat and can be very low if the throat
is deep. We suggest that a model of this kind may explain all the neutrino
data, reconciling the LSND result with astrophysical constraints.


title:
Parameterization of the energy and rapidity distributions of secondary
  pions and kaons produced in energetic proton-proton collisions

abstract:
  The possibility of proton acceleration to very high energies in astrophysical
sources may have unique observational consequences. In particular, the decay of
secondary mesons created in the interaction of energetic protons with photons
or nucleons gives rise to high-energy gamma rays and neutrinos with potentially
observable fluxes. Recently, there has been considerable interest in the
parameterization of the energy spectra of these secondaries. Less attention has
been paid to the angular distributions, which may have an important effect on
observational quantities and are required to address collisions between protons
with different energies and an arbitrary scattering angle. In this work, we
study the complete particle distributions of secondary mesons created in
proton-proton collisions. We present parameterizations of the energy and
rapidity distributions of secondary pions and kaons that reproduce results
generated with the event generator PYTHIA to within ~10% in the bulk of the
parameter space. The parameterizations are based on incident proton energies
from 1 TeV to 1 PeV and are suited for extrapolation to higher energies. We
present several applications of these parameterizations. Energy spectra and
angular distributions of stable decay products (electrons, neutrinos and gamma
rays) follow readily. We give an example of the gamma-ray spectrum that results
from the decay of pi0 mesons created in a proton-proton collision. We show that
there is a strong correlation between the energy of secondary mesons and the
degree of collimation around the direction of the colliding protons. This
effect may have important implications for the detection possibility of
neutrinos created in the interaction of a developing GRB with its surroundings.


title: How to preserve symmetries with cut-off regularized integrals?

abstract:
  We present a prescription to calculate the quadratic and logarithmic
divergent parts of several integrals employing a cutoff in a coherent way, i.e.
in total agreement with symmetry requirements. As examples we consider one-loop
Ward identities for QED and a phenomenological chiral model.


title:
Combined Chiral Dynamics and MIT Bag Model Study of Strong
  \Sigma^{(*)}_Q \to \Lambda_Q\pi Decays

abstract:
  The strong decays of the heavy baryons \Sigma^{(*)}_Q \to \Lambda_Q \pi are
studied by combining the chiral dynamics and the MIT bag model. In charm
sector, we calculate the decay widths \Gamma(\Sigma^{(*)}_c\to \Lambda_c\pi)
and compare with the experimental data and other theoretical estimations. In
addition, we also predict the strong decay widths \Gamma(\Sigma^{(*)}_b\to
\Lambda_b\pi).


title: Lepton flavour violating processes at the International Linear Collider

abstract:
  We study the effects of dimension six effective operators on the flavour
violating production and decay of leptons at the International Linear Collider.
Analytic expressions for the cross sections, decay widths and asymmetries of
all flavour changing processes will be presented, as well as an analysis of the
feasibility of their observation at the ILC.


title:
Particle Physics Implications of a Recent Test of the Gravitational
  Inverse Square Law

abstract:
  We use data from our recent search for violations of the gravitational
inverse-square law to constrain dilaton, radion and chameleon exchange forces
as well as arbitrary vector or scalar interactions. We test the interpretation
of the PVLAS effect and a conjectured ``fat graviton'' scenario and constrain
the $\gamma_5$ couplings of pseuodscalar bosons and arbitrary power-law
interactions.


title:
Black Hole Production at the LHC by Standard Model Bulk Fields in the
  Randall-Sundrum Model

abstract:
  We consider the production of black holes at the LHC in the
Randall-Sundrum(RS) model through the collisions of Standard Model(SM) fields
in the bulk. In comparison to the previously studied case where the SM fields
are all confined to the TeV brane, we find substantial suppressions to the
corresponding collider cross sections for all initial states, i.e., $gg$, $qq$
and $gq$, where $q$ represents a light quark or anti-quark which lie close to
the Planck brane. For $b$ quarks, which are closer to the TeV brane, this
suppression effect is somewhat weaker though $b$ quark contributions to the
cross section are already quite small due to their relatively small parton
densities. Semi-quantitatively, we find that the overall black hole cross
section is reduced by roughly two orders of magnitude in comparison to the
traditional TeV brane localized RS model with the exact value being sensitive
to the detailed localizations of the light SM fermions in the bulk.


title:
Neutrino Mixings and Leptonic CP Violation from CKM Matrix and Majorana
  Phases

abstract:
  The high scale mixing unification hypothesis recently proposed by three of us
(R. N. M., M. K. P. and G. R.) states that if at the seesaw scale, the quark
and lepton mixing matrices are equal then for quasi-degenerate neutrinos,
radiative corrections can lead to large solar and atmospheric mixings and small
reactor angle at the weak scale in agreement with data. Evidence for
quasi-degenerate neutrinos could, within this framework, be interpreted as a
sign of quark-lepton unification at high scale. In the current work, we extend
this model to show that the hypothesis works quite successfully in the presence
of CP violating phases (which were set to zero in the first paper). In the case
where the PMNS matrix is identical to the CKM matrix at the seesaw scale, with
a Dirac phase but no Majorana phase, the low energy Dirac phase is predicted to
be ($\simeq 0.3^{\circ}$) and leptonic CP-violation parameter $J_{CP} \simeq (4
- 8)\times 10^{-5}$ and $\theta_{13} = 3.5^{\circ}$. If on the other hand, the
PMNS matrix is assumed to also have Majorana phases initially, the resulting
theory damps radiative magnification phenomenon for a large range of parameters
but nevertheless has enough parameter space to give the two necessary large
neutrino mixing angles. In this case, one has $\theta_{13} = 3.5^{\circ} -
10^{\circ}$ and $|J_{CP}|$ as large as $0.02-0.04$ which are accessible to long
baseline neutrino oscillation experiments.


title: Model-dependent radiative corrections to tau- -> pi- pi0 nu revisited

abstract:
  The long-distance electromagnetic radiative corrections to tau- -> pi- pi0 nu
are re-evaluated. A meson dominance model is used to describe the emission of
real photons in this decay. Results obtained for the hadronic spectrum and the
decay rate in photon inclusive reactions are compared with previous
calculations based on the chiral resonance theory. Independent tests in tau ->
pi pi nu gamma that can help to validate the predictions of one of the two
models are briefly discussed.


title: AdS/QCD Phenomenological Models from a Back-Reacted Geometry

abstract:
  We construct a fully back-reacted holographic dual of a four-dimensional
field theory which exhibits chiral symmetry breaking. Two possible models are
considered by studying the effects of a five-dimensional field, dual to the
$q\bar{q}$ operator. One model has smooth geometry at all radii and the other
dynamically generates a cutoff at finite radius. Both of these models satisfy
Einstein's field equations. The second model has only three free parameters, as
in QCD, and we show that this gives phenomenologically consistent results. We
also discuss the possibility that in order to obtain linear confinement from a
back-reacted model it may be necessary to consider the condensate of a
dimension two operator.


title: Magnetic component of Yang-Mills plasma

abstract:
  Confinement in non-Abelian gauge theories is commonly ascribed to percolation
of magnetic monopoles, or strings in the vacuum. At the deconfinement phase
transition the condensed magnetic degrees of freedom are released into gluon
plasma as thermal magnetic monopoles. We point out that within the percolation
picture lattice simulations can be used to estimate the monopole content of the
gluon plasma. We show that right above the critical temperature the monopole
density remains a constant function of temperature, as for a liquid, and then
grows, like for a gas.

categories: hep-ph cond-mat.other hep-lat hep-th physics.plasm-ph


title: Ten years of the Analytic Perturbation Theory in QCD

abstract:
  The renormalization group method enables one to improve the properties of the
QCD perturbative power series in the ultraviolet region. However, it ultimately
leads to the unphysical singularities of observables in the infrared domain.
The Analytic Perturbation Theory constitutes the next step of the improvement
of perturbative expansions. Specifically, it involves additional analyticity
requirement which is based on the causality principle and implemented in the
K\"allen--Lehmann and Jost--Lehmann representations. Eventually, this approach
eliminates spurious singularities of the perturbative power series and enhances
the stability of the latter with respect to both higher loop corrections and
the choice of the renormalization scheme. The paper contains an overview of the
basic stages of the development of the Analytic Perturbation Theory in QCD,
including its recent applications to the description of hadronic processes.


title: Direct Wimp Detection in Directional Experiments

abstract:
  The recent WMAP data have confirmed that exotic dark matter together with the
vacuum energy (cosmological constant) dominate in the flat Universe. Thus the
direct dark matter search, consisting of detecting the recoiling nucleus, is
central to particle physics and cosmology. Modern particle theories naturally
provide viable cold dark matter candidates with masses in the GeV-TeV region.
Supersymmetry provides the lightest supersymmetric particle (LSP), theories in
extra dimensions the lightest Kaluza-Klein particle (LKP) etc. In such theories
the expected rates are much lower than the present experimental goals. So one
should exploit characteristic signatures of the reaction, such as the
modulation effect and, in directional experiments, the correlation of the event
rates with the sun's motion.
  In standard non directional experiments the modulation is small, less than
two per cent and the location of the maximum depends on the unknown particle's
mass.
  In directional experiments, in addition to the forward-backward asymmetry due
to the sun's motion, one expects a larger modulation, which depends on the
direction of observation. We study such effects both in the case of a light and
a heavy target. Furthermore, since it now appears that the planned experiments
will be partly directional, in the sense that they can only detect the line of
the recoiling nucleus, but not the sense of direction on it, we study which of
the above mentioned interesting features, if any, will persist in these less
ambitious experiments.


title: Chiral perturbation theory

abstract:
  We give a brief introduction to chiral perturbation theory in its various
settings. We discuss some applications of recent interest including chiral
extrapolations for lattice gauge theory.


title:
Towards constraints on the SUSY seesaw from flavour-dependent
  leptogenesis

abstract:
  We systematically investigate constraints on the parameters of the
supersymmetric type-I seesaw mechanism from the requirement of successful
thermal leptogenesis in the presence of upper bounds on the reheat temperature
$T_\mathrm{RH}$ of the early Universe. To this end, we solve the
flavour-dependent Boltzmann equations in the MSSM, extended to include
reheating. With conservative bounds on $T_\mathrm{RH}$, leading to mildly
constrained scenarios for thermal leptogenesis, compatibility with observation
can be obtained for extensive new regions of the parameter space, due to
flavour-dependent effects. On the other hand, focusing on (normal) hierarchical
light and heavy neutrinos, the hypothesis that there is no CP violation
associated with the right-handed neutrino sector, and that leptogenesis
exclusively arises from the CP-violating phases of the $U_\text{MNS}$ matrix,
is only marginally consistent. Taking into account stricter bounds on
$T_\mathrm{RH}$ further suggests that (additional) sources of CP violation must
arise from the right-handed neutrino sector, further implying stronger
constraints for the right-handed neutrino parameters.


title: Neutrino parameters from matter effects in $P_{ee}$ at long baselines

abstract:
  We show that the earth matter effects in the ${\rm {\nu_e \to \nu_e}}$
survival probability can be used to cleanly determine the third leptonic mixing
angle $\theta_{13}$ and the sign of the atmospheric neutrino mass squared
difference, $\Delta m^2_{31}$, using a $\beta$-beam as a $\nu_e$ source.


title:
Radiative corrections to the semileptonic and hadronic Higgs-boson
  decays H -> W W/Z Z -> 4 fermions

abstract:
  The radiative corrections of the strong and electroweak interactions are
calculated for the Higgs-boson decays H -> WW/ZZ -> 4f with semileptonic or
hadronic four-fermion final states in next-to-leading order. This calculation
is improved by higher-order corrections originating from heavy-Higgs-boson
effects and photonic final-state radiation off charged leptons. The W- and
Z-boson resonances are treated within the complex-mass scheme, i.e. without any
resonance expansion or on-shell approximation. The calculation essentially
follows our previous study of purely leptonic final states. The electroweak
corrections are similar for all four-fermion final states; for integrated
quantities they amount to some per cent and increase with growing Higgs-boson
mass M_H, reaching 7-8% at M_H \sim 500 GeV. For distributions, the corrections
are somewhat larger and, in general, distort the shapes. Among the QCD
corrections, which include corrections to interference contributions of the
Born diagrams, only the corrections to the squared Born diagrams turn out to be
relevant. These contributions can be attributed to the gauge-boson decays, i.e.
they approximately amount to \alpha_s/\pi for semileptonic final states and
2\alpha_s/\pi for hadronic final states. The discussed corrections have been
implemented in the Monte Carlo event generator PROPHECY4F.


title:
Limits on the Electromagnetic and Weak Dipole Moments of the Tau-Lepton
  in E_6 Superstring Models

abstract:
  We obtain limits on the electromagnetic and weak dipole moments of the
tau-lepton in the framework of a Left-Right symmetric model (LRSM) and a class
of $E_6$ inspired models with an additional neutral vector boson $Z_\theta$.
Using as an input the data obtained by the L3 and OPAL Collaborations for the
reaction $e^+e^-\to \tau^+\tau^-\gamma$, we get a stringent limit on the LRSM
mixing angle $\phi$, $-1.66\times 10^{-3}< \phi<1.22\times 10^{-3}$, which in
turn induces bounds on the tau weak dipole moments which are consistent with
the bounds obtained recently by the DELPHI and ALEPH Collaborations from the
reaction $e^+e^-\to \tau^+\tau^-$. We also get similar bounds for the weak
dipole moments of the tau lepton in the framework of $E_6$ superstring models.


title:
Two-loop amplitudes and master integrals for the production of a Higgs
  boson via a massive quark and a scalar-quark loop

abstract:
  We compute all two-loop master integrals which are required for the
evaluation of next-to-leading order QCD corrections in Higgs boson production
via gluon fusion. Many two-loop amplitudes for 2 -> 1 processes in the Standard
Model and beyond can be expressed in terms of these integrals using automated
reduction techniques. These integrals also form a subset of the master
integrals for more complicated 2 -> 2 amplitudes with massive propagators in
the loops. As a first application, we evaluate the two-loop amplitude for Higgs
boson production in gluon fusion via a massive quark. Our result is the first
independent check of the calculation of Spira, Djouadi, Graudenz and Zerwas. We
also present for the first time the two-loop amplitude for gg -> h via a
massive squark.


title: Physics at LHC

abstract:
  The prospects for physics at the LHC are discussed, starting with the
foretaste, preparation (and perhaps scoop) provided by the Tevatron, in
particular, and then continuing through the successive phases of LHC operation.
These include the start-up phase, the early physics runs, the possible search
for new physics in double diffraction, the continuation to nominal LHC running,
and the possible upgrade of the LHC luminosity. Emphasis is placed on the
prospects for Higgs physics and the search for supersymmetry. The progress and
discoveries of the LHC will set the time-scale and agenda for the major future
accelerator projects that will follow it.


title: K*-couplings for the antidecuplet excitation

abstract:
  We estimate the coupling of the K* vector meson to the N-->Theta+ transition
employing unitary symmetry, vector meson dominance, and results from the GRAAL
Collaboration for eta photoproduction off the neutron. Our small numerical
value for the coupling constant is consistent with the non-observation of the
Theta+ in recent CLAS searches for its photoproduction. We also estimate the
K*-coupling for the N-->Sigma* excitation, with Sigma* being the Sigma-like
antidecuplet partner of the Theta+-baryon.


title: Collider Signatures of Singlet Extended Higgs Sectors

abstract:
  We explore the collider signatures of the Higgs sectors in singlet-extended
MSSM models. We find that even with reduced couplings due to singlet mixing, a
significant portion of the parameter spaces have a discoverable Higgs via
traditional decay modes or via invisible decays (directly to neutralinos or
through cascade decays to neutralinos and neutrinos). For illustrative points
in parameter space we give the likelihood of Higgs discovery. In cases where
neither traditional nor invisible modes can discover the Higgs, the neutralino
sector may provide evidence for the extended models.


title:
Decay of Charged Higgs boson in a scenario of SUSY breaking inspired
  neutrino mass

abstract:
  In some class of supersymmetric models, small neutrino mass is given as a
consequence of the supersymmetry (SUSY) breaking. Phenomenologically
interesting features of this scenario are as follows: (i) the right-handed
sneutrino mass could be as low as TeV scale due to the Giudice-Masiero
mechanism, and (ii) a scalar trilinear interaction of
Higgs-slepton-(right-handed) sneutrino could be sizable without suppression by
the small neutrino Yukawa coupling. We study some phenomenological aspects of
this scenario focusing on the scalar trilinear interaction. We show that the
1-loop correction by sneutrino exchange to the lightest Higgs boson mass
destructively interferes with top-stop contributions in the minimal SUSY
Standard Model. We find that a decay of charged Higgs boson into sneutrino and
charged slepton is sizably enhanced and hence it gives rise to a distinctive
signal at future collider experiments in some parameter space.


title: Weak Boson Emission in Hadron Collider Processes

abstract:
  The O(alpha) virtual weak radiative corrections to many hadron collider
processes are known to become large and negative at high energies, due to the
appearance of Sudakov-like logarithms. At the same order in perturbation
theory, weak boson emission diagrams contribute. Since the W and Z bosons are
massive, the O(alpha) virtual weak radiative corrections and the contributions
from weak boson emission are separately finite. Thus, unlike in QED or QCD
calculations, there is no technical reason for including gauge boson emission
diagrams in calculations of electroweak radiative corrections. In most
calculations of the O(alpha) electroweak radiative corrections, weak boson
emission diagrams are therefore not taken into account. Another reason for not
including these diagrams is that they lead to final states which differ from
that of the original process. However, in experiment, one usually considers
partially inclusive final states. Weak boson emission diagrams thus should be
included in calculations of electroweak radiative corrections. In this paper, I
examine the role of weak boson emission in those processes at the Fermilab
Tevatron and the CERN LHC for which the one-loop electroweak radiative
corrections are known to become large at high energies (inclusive jet, isolated
photon, Z+1 jet, Drell-Yan, di-boson, t-bar t, and single top production). In
general, I find that the cross section for weak boson emission is substantial
at high energies and that weak boson emission and the O(alpha) virtual weak
radiative corrections partially cancel.


title: Higgs at the Tevatron in Extended Supersymmetric Models

abstract:
  Supersymmetric models with an additional singlet field offer the Higgs boson
the possibility to decay to two pseudoscalars, a. If the mass of these
pseudoscalars is above the b bbar threshold, a -> b bbar is generically the
dominant decay mode. The decay h -> a a -> b bbar b bbar may be seen above
backgrounds at the Tevatron if the Higgs production cross section is enhanced
relative to that of the standard model.


title: Neutrinoless double beta decay

abstract:
  The status of the search for neutrinoless double beta decay is reviewed. The
effort to reach the sensitivity needed to cover the effective Majorana neutrino
mass corresponding to the degenerate and inverted mass hierarchy is described.
Various issues concerning the theory (and phenomenology) of the relation
between the $0\nu\beta\beta$ decay rate and the absolute neutrino mass scale
are discussed, in particular the issue of mechanism of the $0\nu\beta\beta$
decay. Finally, the relation between the neutrino magnetic moments and the
charge conjugation property (Dirac vs. Majorana) is described.


title: Standard and epsilon-finite Master Integrals for the rho-Parameter

abstract:
  We have constructed an epsilon-finite basis of master integrals for all new
types of one-scale tadpoles which appear in the calculation of the four-loop
QCD corrections to the electroweak rho-parameter. Using transformation rules
from the epsilon-finite basis to the standard minimal-number-of-lines basis, we
obtain as a by-product analytical expressions for few leading terms of the
epsilon-expansion of all members of the standard basis. The new master
integrals have been computed with the help of the Pade method and by use of
difference equations independently.


title:
A study on the radiative dileptonic decays
  $B^0(B_s)\to\gamma\ell^+\ell^-$

abstract:
  We study the rare radiative dileptonic decays $B^0(B_s)\to
\gamma\ell^+\ell^-$ ($\ell=e,\mu$) in the standard model. By using the $B$
meson wave function constrained by non-leptonic decays, the branching ratios
turn out to be of the order of $10^{-9}$ for $B_s\to\gamma\mu^+\mu^-$, $\gamma
e^+ e^-$ and $10^{-10}$ for $B^0\to\gamma\mu^+\mu^-$, $\gamma e^+ e^-$. Based
on the study, these decays are accessible at the near future LHC-b experiment,
which are useful to determine the $B(B_s)$ wave function.


title: Tensor Charges, Quark Anomalous Magnetic Moments And Baryons

abstract:
  We propose an ultimate upgrade of the Karl- Sehgal (KS) 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, the ratio of the quark mass to the average
kinetic energy and the quark anomalous magnetic moment. The quark anomalous
magnetic moment is shown to be correlated to transversity and both parameters
are necessary ingredients in describing relativistic quarks. The proposed
formula, when confronted with baryon magnetic moments data with reasonable
inputs, confirms that anomalous magnetic moments of quarks are unavoidable
intrinsic properties .


title: Monte Carlo Generators

abstract:
  The structure of events in high-energy collisions is complex and not
predictable from first principles. Event generators allow the problem to be
subdivided into more manageable pieces, some of which can be described from
first principles, while others need to be based on appropriate models with
parameters tuned to data. In these lectures we provide an overview, discuss how
matrix elements are used, introduce the machinery for initial- and final-state
parton showers, explain how matrix elements and parton showers can be combined
for optimal accuracy, introduce the concept of multiple parton--parton
interactions, comment briefly on the hadronization issue, and provide an
outlook for the future.


title: Axial exchange currents and nucleon spin

abstract:
  We calculate the hypercharge and flavor singlet axial couplings related to
the spin of the nucleon in a constituent quark model. In addition to the
standard one-body axial currents, the model includes two-body axial exchange
currents. The latter are necessary to satisfy the Partial Conservation of Axial
Current (PCAC) condition. For both axial couplings we find significant
corrections to the standard quark model prediction. Exchange currents reduce
the valence quark contribution to the nucleon spin and afford an interpretation
of the missing nucleon spin as orbital angular momentum carried by nonvalence
quark degrees of freedom.


title: Predictive Supersymmetry from Criticality

abstract:
  Motivated by the absence of any direct signal of new physics so far, we
present a simple supersymmetric model in which the up-type Higgs mass-squared
parameter crosses zero at a scale close to the weak scale. Such a theory may be
motivated either by the conventional naturalness picture or by the landscape
picture with certain assumptions on prior probability distributions of
parameters. The model arises from a simple higher dimensional setup in which
the gauge and Higgs fields propagate in the bulk while the matter fields are on
a brane. The soft supersymmetry breaking parameters receive contributions from
both moduli and anomaly mediations, and their weak scale values can be
analytically solved for in terms of a single overall mass scale M. The expected
size for M depends on whether one adopts the naturalness or landscape pictures,
allowing for the possibility of distinguishing between these two cases. We also
present possible variations of the model, and discuss more general implications
of the landscape picture in this context.


title: Role of Glueballs in Non-Perturbative Quark-Gluon Plasma

abstract:
  Discussed is how non-perturbative properties of quark gluon plasma, recently
discovered in RHIC experiment, can be related to the change of properties of
scalar and pseudoscalar glueballs. We set up a model with the Cornwall-Soni's
glueball-gluon interaction, which shows that the pseudoscalar glueball becomes
massless above the critical temperature of deconfinement phase transition. This
change of properties gives rise to the change of sign of the gluon condensate
at $T > T_c$. We discuss the other physical consequences resulting from the
drastic change of the pseudoscalar glueball mass above the critical
temperature.


title: Roper resonance in a quark-diquark model

abstract:
  We discuss a new description for the Roper resonance, the first nucleon
excited state of JP = 1/2+, in a model of strong diquark correlations. Treating
the scalar-isoscalar and axial-vector--isovector diquarks as independent
degrees of freedom, two states having nucleon quantum numbers are constructed.
Due to the scalar and axial-vector nature of the diquarks, the two nucleon
states have different internal structure of spin and isospin. This yields the
mass splitting of order several hundreds MeV, and hence the two states are
identified with the nucleon and Roper. We demonstrate this scenario in a simple
two channel problem.


title: The Neutral Higgs Effects on Rare Decays $B \to X_s l^+ l^-$ in T2HDM

abstract:
  We calculate the new physics contributions to the branching ratios of the
rare decays $B \to X_s l^+ l^-$ $(l=e, \mu)$ induced by neutral Higgs bosons
loop diagrams in the top quark two-Higgs-doublet model (T2HDM). From the
numerical calculations, we find that (a) the neutral Higgs boson's correction
to $B \to X_s l^+ l^-$ decays interferes constructively with its standard model
counterpart, but small in magnitude; (b) the neutral Higgs contributions to the
branching ratio of $B \to X_s l^+ l^-$ decay can be neglected safely if their
masses are larger than 100 GeV and $\tan\beta \leq 40$.


title:
Formation of Cosmic String network from black holes: Implications from
  liquid crystal experiments

abstract:
  We present observation of large, expanding string loops forming around a
heated wire tip embedded in a nematic liquid crystal sample. Loops expand due
to convective stretching. This observation leads to a new insight into
phenomena which could occur in the early universe. We show that local heating
of plasma in the early universe by evaporating primordial black holes can lead
to formation of large, expanding cosmic string loops, just as observed in the
liquid crystal experiment. Intercommutation of string loops from neighboring
black holes can lead to percolation, thereby forming an infinite string
network. This is remarkable as such an infinite string network is thought to
arise only when the entire universe undergoes phase transition.


title:
Heavy Quark Mass Effects in Deep Inelastic Scattering and Global QCD
  Analysis

abstract:
  A new implementation of the general PQCD formalism of Collins, including
heavy quark mass effects, is described. Important features that contribute to
the accuracy and efficiency of the calculation of both neutral current (NC) and
charged current (CC) processess are explicitly discussed. This new
implementation is applied to the global analysis of the full HERA I data sets
on NC and CC cross sections, with correlated systematic errors, in conjunction
with the usual fixed-target and hadron collider data sets. By using a variety
of parametrizations to explore the parton parameter space, robust new parton
distribution function (PDF) sets (CTEQ6.5) are obtained. The new quark
distributions are consistently higher in the region x ~ 10^{-3} than previous
ones, with important implications on hadron collider phenomenology, especially
at the LHC. The uncertainties of the parton distributions are reassessed and
are compared to the previous ones. A new set of CTEQ6.5 eigenvector PDFs that
encapsulates these uncertainties is also presented.


title: Tau polarization effects in the CNGS tau-neutrino appearance experiments

abstract:
  We studied tau polarization effects on the decay distributions of tau
produced in the CNGS tau-neutrino appearance experiments. We show that energy
and angular distributions for the decay products in the laboratory frame are
significantly affected by the tau polarization. Rather strong azimuthal
asymmetry about the tau momentum axis is predicted, which may have observable
consequences in experiments even with small statistics.


title: Hadron Tomography

abstract:
  Generalized parton distributions describe the distribution of partons in the
transverse plane. For transversely polarized quarks and/or nucleons, these
impact parameter dependent parton distributions are not axially symmetric.
These transverse distortions can be related to spin-orbit correlations as well
as to (intuitively) to transverse single-spin asymmetries, allowing novel
insights into quark orbital angular momentum from measurements of the Sivers
and Boer-Mulders functions.


title: Low-Energy Thermal Leptogenesis in an Extended NMSSM Model

abstract:
  Thermal leptogenesis in the canonical seesaw model in supersymmetry suffers
from the incompatibility of a generic lower bound on the mass scale of the
lightest right-handed neutrino and the upper bound on the reheating temperature
of the Universe after inflation. This is resolved by adding an extra singlet
superfield, with a discrete $Z_2$ symmetry, to the NMSSM (Next to Minimal
Supersymmetric Standard Model). This generic mechanism is applicable to any
supersymmetric model for lowering the scale of leptogenesis.


title: Photon - Axion Conversion Cross Sections in a Resonant Cavity

abstract:
  Photon - axion conversions in the resonant cavity with the lowest mode are
considered in detail by the Feynman diagram method. The differential cross
sections are presented and numerical evaluations are given. It is shown that
there is a resonant conversion for the considered process, in which the
conversion cross sections are much larger than those of the wave guide in the
same conditions. Some estimates for experimental conditions are given from our
results.


title: Mass Determination in Cascade Decays Using Shape Formulas

abstract:
  In SUSY scenarios with invisible LSP, sparticle masses can be determined from
fits to the endpoints of invariant mass distributions. Here we discuss possible
improvements by using the shapes of the distributions. Positive results are
found for multiple-minima situations and for mass regions where the endpoints
do not contain sufficient information to obtain the masses.


title:
Yukawa radiative corrections to the trilinear self-couplings of neutral
  CP-even Higgs bosons and decay width $\Gamma(H \to hh)$ in the MSSM

abstract:
  The four self-couplings $\lambda_{hhh}$, $\lambda_{hhH}$, $\lambda_{hHH}$,
$\lambda_{HHH}$ and decay width $\Gamma(H \to hh)$ are calculated taken into
account one-loop $t,b,c$ - (s)quarks, $\tau$ - (s)lepton corrections in the
framework of the Minimal Supersymmetric Standard Model (MSSM). By the example
of self-couplings dependencies from $ \tg \beta$ and \textrm{$M_A$}, it is
shown, that calculated corrections can give the essential contribution to
self-couplings and decay width determined at one-loop level. The radiative
corrections account becomes necessary condition for performance of Higgs
potential reconstruction procedure and experimental confirmation of Higgs
mechanism.


title: Comparison of the CERN-MEMPHYS and T2HK neutrino oscillation experiments

abstract:
  In this talk I compare the physics potential of possible future neutrino
oscillation experiments from CERN to a Mt scale water Cerenkov detector at
Frejus (MEMPHYS) and of the T2HK proposal in Japan, where for the CERN
experiments an SPL Superbeam and a $\gamma=100$ Beta Beam are considered.


title: Unification of the Standard Model Via High-Energy Unitarity

abstract:
  High-energy unitarity is satisfied by adding a sextet quark doublet to QCD.
The sextet sector produces electroweak symmetry breaking and is predicted to
give large cross-section effects at the LHC. It embeds, uniquely, in a massless
SU(5) theory whose bound-state S-Matrix, potentially, reproduces the Standard
Model. Infra-red chirality transitions of the massless Dirac sea play an
essential dynamical role.


title: Shortcuts in extra dimensions and neutrino physics

abstract:
  We discuss the possibility of sterile neutrinos taking shortcuts in extra
dimensions, and the consequences for neutrino oscillations. This effect
influences the active-sterile neutrino mixing and provides a possibility to
accommodate the LSND evidence for neutrino oscillations together with bounds
from accelerator and reactor experiments. We briefly comment on causality in
such schemes.


title: Lattice QCD with light twisted quarks: first results

abstract:
  I report on first results of the ETMC obtained simulating lattice QCD with
two degenerate flavours of Wilson twisted mass fermions, for which physical
observables are automatically O(a) improved. Recent improvements of the HMC
algorithm allow simulations of pseudoscalar masses below 300 MeV on volumes L^3
x 2L with L>2 fm and at values of the lattice spacing a<0.1 fm.


title: Semi-inclusive deep inelastic scattering at small transverse momentum

abstract:
  We study the cross section for one-particle inclusive deep inelastic
scattering off the nucleon for low transverse momentum of the detected hadron.
We decompose the cross section in terms of structure functions and calculate
them at tree level in terms of transverse-momentum-dependent parton
distribution and fragmentation functions. Our results are complete in the
one-photon exchange approximation at leading and first subleading twist
accuracy, with both beam and target polarization.


title:
Analytic Results for Virtual QCD Corrections to Higgs Production and
  Decay

abstract:
  We consider the production of a Higgs boson via gluon-fusion and its decay
into two photons. We compute the NLO virtual QCD corrections to these processes
in a general framework in which the coupling of the Higgs boson to the external
particles is mediated by a colored fermion and a colored scalar. We present
compact analytic results for these two-loop corrections that are expressed in
terms of Harmonic Polylogarithms. The expansion of these corrections in the low
and high Higgs mass regimes, as well as the expression of the new Master
Integrals which appear in the reduction of the two-loop amplitudes, are also
provided. For the fermionic contribution, we provide an independent check of
the results already present in the literature concerning the Higgs boson and
the production and decay of a pseudoscalar particle.


title: Vacuum Birefringence in a Rotating Magnetic Field

abstract:
  We calculate the vacuum polarization-induced ellipticity acquired by a
linearly polarized laser beam of angular frequency $\bar \omega$ on traversing
a region containing a transverse magnetic field rotating with a small angular
velocity $\Omega$ around the beam axis. The transmitted beam contains the
fundamental frequency $\bar \omega$ and weak sidebands of frequency $\bar
\omega \pm 2 \Omega$, but no other sidebands. To first order in small
quantities, the ellipticity acquired by the transmitted beam is independent of
$\Omega$, and is the same as would be calculated in the approximation of
regarding the magnetic field as fixed at its instantaneous angular orientation,
using the standard vacuum birefringence formulas for a static magnetic field.
Also to first order, there is no rotation of the polarization plane of the
transmitted beam. Analogous statements hold when the magnetic field strength is
slowly varying in time.


title:
Modification of the Unitarity Relation for sin2beta-Vub in
  Supersymmetric Models

abstract:
  Recently, a more than 2sigma discrepancy has been observed between the well
measured inclusive value of Vub and the predicted value of Vub from the
unitarity triangle fit using the world average value of sin2beta. We attempt to
resolve this tension in the context of grand unified SO(10) and SU(5) models
where the neutrino mixing matrix is responsible for flavor changing neutral
current at the weak scale and the models with non-proportional A-terms (can be
realized simply in the context of intersecting D-brane models) and investigate
the interplay between the constraints arising from B_{s,d}-\bar B_{s,d}
mixings, epsilon_K, Br(tau -> mu gamma), Br(mu -> e gamma) and a fit of this
new discrepancy. We also show that the ongoing measurement of the phase of Bs
mixing will be able to identify the grand unified model. The measurement of
Br(tau -> e gamma) will also be able to test these scenarios, especially the
models with non-proportional A-terms.


title: Developments In 5D Quark-Lepton Symmetric Models

abstract:
  We outline some recent developments in higher dimensional Quark-Lepton (QL)
symmetric models. The QL symmetric model in five dimensions is discussed, with
particular emphasis on the use of split fermions. An interesting fermionic
geography which utilises the QL symmetry to suppress the proton decay rate and
to motivate the flavor differences in the quark and leptonic sectors is
considered. The 5D quartification model is outlined and contrasted with 4D
constructs.


title: Unique Higgs boson signature at colliders

abstract:
  The HyperCP collaboration has observed three events for the decay $\Sigma^+
\to p \mu^+ \mu^-$. The three events may be interpreted as a new narrow-width
CP-odd scalar $a$ with the mass $214.3 \pm 0.5$ MeV. Here $a$ decays dominantly
into di-muon ($\mu^+\mu^-$). As the consequence of tiny mass difference between
$m_a$ and 2$m_\mu$ ($2 m_{\mu} \approx$ 211.3 MeV), di-muon will be boosted to
almost the same direction at colliders. Such kind of di-muon events have been
overlooked in the past experiments. Provided that the precision data preferred
light SM-like Higgs boson $h$ decays dominantly into $a a$ other than into
$b\bar b$, in order to be consistent with null Higgs boson search at LEP, the
$h\to aa \to 4\mu$ ($2\mu^+ 2\mu^-$) will be the unique Higgs boson signature
which has not been noticed before. The SM-like Higgs boson may hide itself from
the usual analysis of LEP and Tevatron experiments, which should be reanalyzed
in the light of new theoretical and experimental developments. In this paper,
we also investigate this unique Higgs boson signature at colliders and conclude
that the SM-like Higgs boson could be discovered with rather low integrated
luminosity, provided that the $h\to 4\mu$ reconstruction efficiency is not
extremely low. It is not impossible that such kind of unique Higgs boson $4\mu$
events are now lurking in the existing LEP and/or Tevatron data.


title:
Structure of the axial-vector meson $D_{s1}(2460)$ and the strong
  coupling constant $g_{D_{s1} D^* K}$ with the light-cone QCD sum rules

abstract:
  In this article, we take the point of view that the charmed axial-vector
meson $D_{s1}(2460)$ is the conventional $c\bar{s}$ meson and calculate the
strong coupling constant $g_{D_{s1} D^* K}$ in the framework of the light-cone
QCD sum rules approach. The numerical values of strong coupling constants
$g_{D_{s1} D^* K}$ and $g_{D_{s0} D K}$ are very large, and support the
hadronic dressing mechanism. Just like the scalar mesons $f_0(980)$ and
$a_0(980)$, the scalar meson $D_{s0}(2317)$ and axial-vector meson
$D_{s1}(2460)$ may have small $c\bar{s}$ kernels of the typical $c\bar{s}$
meson size, the strong couplings to the hadronic channels (or the virtual
mesons loops) may result in smaller masses than the conventional $c\bar{s}$
mesons in the constituent quark models, and enrich the pure $c\bar{s}$ states
with other components.


title:
Determining the unitarity triangle angle $\gamma$ with a four-body
  amplitude analysis of $\rm B^\pm \to (K^+K^-\pi^+\pi^-)_D K^\pm$ decays

abstract:
  We explain how a four-body amplitude analysis of the $\rm D$ decay products
in the mode $\rm B^\pm \to (K^+K^-\pi^+\pi^-)_D K^\pm$ is sensitive to the
unitarity triangle angle $\gamma$. We present results from simulation studies
which show that a precision on $\gamma$ of $15^\circ$ is achievable with 1000
events and assuming a value of 0.10 for the parameter $r_B$.


title: A Mathematica Interface for FormCalc-generated Code

abstract:
  This note describes a Mathematica interface for Fortran code generated by
FormCalc. The interfacing code is set up automatically so that only minuscule
changes in the driver files are required. The interface makes a function to
compute the cross-section or decay rate available in Mathematica. This function
depends on the model parameters chosen for interfacing in the Fortran code.