title:
Numerical analysis of the Balitsky-Kovchegov equation with running
  coupling: dependence of the saturation scale on nuclear size and rapidity

abstract:
  We study the effects of including a running coupling constant in high-density
QCD evolution. For fixed coupling constant, QCD evolution preserves the initial
dependence of the saturation momentum $Q_s$ on the nuclear size $A$ and results
in an exponential dependence on rapidity $Y$, $Q^2_s(Y) = Q^2_s(Y_0) \exp{[
\bar\alpha_s d (Y-Y_0) ]}$. For the running coupling case, we re-derive
analytical estimates for the $A$- and $Y$-dependences of the saturation scale
and test them numerically. The $A$-dependence of $Q_s$ vanishes $\propto 1/
\sqrt{Y}$ for large $A$ and $Y$. The $Y$-dependence is reduced to $Q_s^2(Y)
\propto \exp{(\Delta^\prime\sqrt{Y+X})}$ where we find numerically
$\Delta^\prime\simeq 3.2$. We study the behaviour of the gluon distribution at
large transverse momentum, characterizing it by an anomalous dimension
$1-\gamma$ which we define in a fixed region of small dipole sizes. In contrast
to previous analytical work, we find a marked difference between the fixed
coupling ($\gamma \simeq 0.65$) and running coupling ($\gamma \sim 0.85$)
results. Our numerical findings show that both a scaling function depending
only on the variable $r Q_s$ and the perturbative double-leading-logarithmic
expression, provide equally good descriptions of the numerical solutions for
very small $r$-values below the so-called scaling window.


title: Bounds on the Gluino Mass from a Global Parton Density Analysis

abstract:
  Parton distribution functions for protons are devised in which a light gluino
is included along with standard model quark, antiquark, and gluon constituents.
A global analysis of a large set of hadronic scattering data provides empirical
constraints on the allowed range of the gluino mass as a function of the value
of the strong coupling strength alpha_s(M_Z). We find that the gluino mass
m_{\widetilde{g}} > 12 GeV for the standard model world-average value
alpha_{s}(M_{Z})=0.118. Gluino masses as small as 10 GeV are admissible
provided that alpha_s(M_Z) > 0.12, about one standard deviation above the
world-average value. Current hadron scattering data are insensitive to the
presence of gluinos heavier than about 100 - 150 GeV.


title: Thermal photon spectra and HBT correlations at full RHIC energy

abstract:
  Using a model for the evolution of the fireball created in Au-Au collisions
at full RHIC energy which reproduces the hadronic single particle spectra and
two-particle correlations we calculate thermal photon emission from the hot
partonic and hadronic matter. We present predictions for both the emitted
photon transverse momentum spectrum and Hanbury-Brown Twiss (HBT) correlations.
Surprisingly, we find that due to the strong transverse flow in the model
photon emission from hadronic matter is sizeable in the momentum range expected
to be dominated by thermal emission and that consequently the HBT radius
parameters do not reflect exclusively properties of the partonic evolution
phase. We compare to another model calculation where pre-equilibrium photon
emission is dominant to illustrate the differences of both approaches.


title: Quark structure of chiral solitons

abstract:
  There is a prejudice that the chiral soliton model of baryons is something
orthogonal to the good old constituent quark models. In fact, it is the
opposite: the spontaneous chiral symmetry breaking in strong interactions
explains the appearance of massive constituent quarks of small size thus
justifying the constituent quark models, in the first place. Chiral symmetry
ensures that constituent quarks interact very strongly with the pseudoscalar
fields. The ``chiral soliton'' is another word for the chiral field binding
constituent quarks. We show how the old SU(6) quark wave functions follow from
the ``soliton'', however, with computable relativistic corrections and
additional quark-antiquark pairs. We also find the 5-quark wave function of the
exotic baryon Theta+.


title:
Effective Potential for $\lambda\phi^4$ Theory at Finite Temperature in
  $R\otimes S^{D-1}$ and $R\otimes H^{D-1}$

abstract:
  We calculate the explicit expression of the effective potential in a
$\lambda\phi^4$ theory at finite temperature in a static universe for arbitrary
spacetime dimensions (2\leq D < 5). To study the combined effects of the
temperature and scale factor to the spontaneous symmetry breaking we evaluate
the effective potential at finite temperature in $R\otimes S^{D-1}$ and
$R\otimes H^{D-1}$. The phase structure of a $\lambda\phi^4$ theory is found by
observing the minimum of the effective potential with varying temperature and
scale factor. All the ring diagrams are resummed for $D\gtrsim 4$ to improve
the loop expansion at high temperature. For a conformally coupled and a
minimally coupled scalar field it is shown that temperature and positive
curvature suppress the symmetry breaking, while negative curvature enhances it.
The conformally coupled scalar has larger curvature effects than the minimally
coupled one.


title:
A search for the minimal unified field theory. I. Parallel transport of
  Dirac field

abstract:
  Two real vector fields are revealed as spin connections of the spinor field,
which is introduced as a representation of the local Lorentz group by Dirac
spinors. One of these fields is identified as the Maxwell field. Another one is
the axial field, which is sufficient to describe parity nonconservation effects
in atoms and it is sensitive to the second internal degree of freedom of the
Dirac spinor field. The polarization associated with this degree of freedom is
a distinctive characteristic of the Dirac spinor field in spatially closed
localized states. The short-distance behavior of the axial field can lead to a
not self-adjoint Dirac Hamiltonian and trigger a ``falling onto a centre''
phenomenon. In the second part of this work, the axial field will be linked to
the gravity.


title:
A search for the minimal unified field theory. II.Spinor matter and
  gravity

abstract:
  The spin connections of the Dirac field have three ingredients that are
connected with the Ricci rotations, the Maxwell field, and an axial field which
is coupled to the axial current. I demonstrate that the axial field provides an
effective mechanism of auto-localization of the Dirac field into compact
objects. A non-linear system of Dirac and sine-Gordon equations that has a
potential to yield a mass spectrum is derived. The condition that the compact
objects are stable (the energy-momentum is self-adjoint) leads to the
Einstein's field equations. The Dirac field with its spin connection seem to be
a natural material carrier of the space-time continuum in which the compact
objects are moving along the geodesic lines. The long distance effect of the
axial field is indistinguishable from the Newton's gravity which reveals the
microscopic nature of gravity and the origin of the gravitational mass.


title: Jet quenching by (pre--)hadronic final state interactions at RHIC

abstract:
  Within a hadron-string dynamical transport approach (HSD) we investigate the
attenuation of high transverse momentum ($\pT$) hadrons as well as the
suppression of 'near-side' and 'far-side' jets in $Au+Au$ collisions at
invariant energies $\sqrt{s}$ = 200 GeV and $\sqrt{s}$ = 62.4 GeV in comparison
to the data available from the Relativistic Heavy-Ion Collider (RHIC). From our
transport studies we find that a significant part of the high $\pT$ hadron
attenuation seen experimentally can be attributed to inelastic interactions of
'leading' pre-hadrons with the dense hadronic environment. In addition, we also
show results of 'near-side' and 'far-side' angular correlations of high $\pT$
particles from Au+Au collisions at $\sqrt{s}$ = 200 GeV and $\sqrt{s}$ = 62.4
GeV within this (pre-)hadronic attenuation scenario. It turns out that the
'near-side' correlations are unaltered -- in accordance with experiment --
whereas the 'far-side' correlations are suppressed by up to $\sim$ 60% in
central collisions. Since a much larger suppression is observed experimentally
for these reactions in central reactions we conclude that there should be
strong additional (and earlier) partonic interactions in the dense and possibly
colored medium created in Au+Au collisions at RHIC.


title:
Two aspects of color superconductivity: gauge independence and
  neutrality

abstract:
  A formal proof is given that the fermionic quasiparticle dispersion laws in a
color superconductor are gauge independent. It is shown that the gluon (photon)
field acquires a non-vanishing expectation value in a color superconductor,
which is related to color (electric) neutrality.


title: Pentaquarks $uudd\bar q$ with One Color Sextet Diquark

abstract:
  The masses of pentaquarks $uudd\bar s$ are calculated within the framework of
a semirelativistic effective QCD Hamiltonian, using a diquark picture. This
approximation allows a correct treatment of the confinement, assumed here to be
similar to a Y-junction. With only color antitriplet diquarks, the mass of the
pentaquark candidate $\Theta$ with positive parity is found around 2.2 GeV. It
is shown that, if a color sextet diquark is present, the lowest $uudd\bar s$
pentaquark is characterized by a much smaller mass with a negative parity. A
mass below 1.7 GeV is computed, if the masses of the color antitriplet and
color sextet diquarks are taken similar.


title:
Detection of sleptons at a linear collider in models with small
  slepton-neutralino mass differences

abstract:
  A feasibility study is presented to precisely measure the masses of charged
sleptons and the lightest neutralino in $e^+e^-\to\smur\smur$ and
$e^+e^-\to\stau_1\stau_1$ production. Different mSUGRA scenarios with small
slepton-neutralino mass differences of a few GeV are invesigated. The analysis
is based on a detailed simulation of the final state lepton energy spectra
including background reactions and assuming realistic experimental conditions
at the TESLA $e^+e^-$ Linear Collider. Effects on the mass resolutions due to
beams colliding head-on or under a crossing angle are discussed.


title:
Gravitino Dark Matter in the CMSSM and Implications for Leptogenesis and
  the LHC

abstract:
  In the framework of the CMSSM we study the gravitino as the lightest
supersymmetric particle and the dominant component of cold dark matter in the
Universe. We include both a thermal contribution to its relic abundance from
scatterings in the plasma and a non--thermal one from neutralino or stau decays
after freeze--out. In general both contributions can be important, although in
different regions of the parameter space. We further include constraints from
BBN on electromagnetic and hadronic showers, from the CMB blackbody spectrum
and from collider and non--collider SUSY searches. The region where the
neutralino is the next--to--lightest superpartner is severely constrained by a
conservative bound from excessive electromagnetic showers and probably
basically excluded by the bound from hadronic showers, while the stau case
remains mostly allowed. In both regions the constraint from CMB is often
important or even dominant. In the stau case, for the assumed reasonable ranges
of soft SUSY breaking parameters, we find regions where the gravitino abundance
is in agreement with the range inferred from CMB studies, provided that, in
many cases, a reheating temperature $\treh$ is large, $\treh\sim10^{9}\gev$. On
the other side, we find an upper bound $\treh\lsim 5\times 10^{9}\gev$. Less
conservative bounds from BBN or an improvement in measuring the CMB spectrum
would provide a dramatic squeeze on the whole scenario, in particular it would
strongly disfavor the largest values of $\treh\sim 10^{9}\gev$. The regions
favored by the gravitino dark matter scenario are very different from standard
regions corresponding to the neutralino dark matter, and will be partly probed
at the LHC.


title: Cronin effect and high-p_T suppression from the Color Glass Condensate

abstract:
  I give a pedagogical survey of the nuclear collective effects associated with
gluon saturation and their impact on particle production in high-energy proton
(or deuteron)-nucleus collisions at RHIC. At central rapidity, the theory
predicts a Cronin peak due to independent multiple scattering off the valence
quarks in the nucleus. At forward rapidities, the peak flattens out and
disappears very fast, because of the correlations induced through quantum
evolution in the nuclear gluon distribution at small x. Also, the ratio R_{pA}
between the particle yield in proton-nucleus and proton-proton collisions is
rapidly suppressed when increasing the rapidity, because of saturation effects
which slow down the evolution of the nucleus compared to that of the proton.
This behaviour could be responsible for a similar trend observed in the
deuteron-nucleus collisions at RHIC.


title: Photons and Fermions in Spacetime with a Compactified Spatial Dimension

abstract:
  The effects of a nonsimply connected spacetime with the topology of
$S^{1}\times R^{3}$ in the vacua of QED and gauged-NJL theories are
investigated. It is shown that the polarization effects of twisted and
untwisted fermions in QED are equivalent, once the corresponding stable vacuum
solution of each fermion class is taken into account. The photon propagation in
QED is found to be anisotropic and characterized by several massive photon
modes and a superluminal transverse mode. At small compactification radius the
masses of the massive modes increase as the inverse of the radius, while the
massless photon mode has a superluminal velocity that increases logarithmically
with that distance. At low energies the photon masses lead to an effective
confinement of the gauge fields into a $(2+1)-$dimensional manifold transverse
to the compactified direction. In the gauged-NJL model, it is shown that for
both twisted and untwisted fermions, the smaller the compactification radius,
the larger the critical four-fermion coupling needed to generate a
fermion-antifermion chiral symmetry breaking condensate.


title: Inclusive Production of the X(3872)

abstract:
  If the X(3872) is a loosely-bound D^{*0} Dbar^0 / D^0 Dbar^{*0} molecule, its
inclusive production rate can be described by the NRQCD factorization formalism
that applies to inclusive quarkonium production. We argue that if the molecule
has quantum numbers J^{PC} = 1^{++}, the most important term in the
factorization formula should be the color-octet ^3S_1 term. This is also one of
the two most important terms in the factorization formulas for chi_{cJ}. Since
the color-octet ^3S_1 term dominates chi_{cJ} production for many processes,
the ratio of the inclusive direct production rates for X and chi_{cJ} should be
roughly the same for these processes. The assumption that the ratio of the
production rates for X and chi_{cJ} is the same for all processes is used to
estimate the inclusive production rate of X in B meson decays, Z^0 decays, and
in p pbar collisions.


title: Constraining the Unitarity Triangle with B -> V gamma

abstract:
  We discuss the exclusive radiative decays $B\to K^{*}\gamma$, $B
\to\rho\gamma$, and $B\to\omega\gamma$ in QCD factorization within the Standard
Model. The analysis is based on the heavy-quark limit of QCD. Our results for
these decays are complete to next-to-leading order in QCD and to leading order
in the heavy-quark limit. Special emphasis is placed on constraining the
CKM-unitarity triangle from these observables. We propose a theoretically clean
method to determine CKM parameters from the ratio of the $B\to\rho l\nu$ decay
spectrum to the branching fraction of $B\to\rho\gamma$. The method is based on
the cancellation of soft hadronic form factors in the large energy limit, which
occurs in a suitable region of phase space. The ratio of the $B\to\rho\gamma$
and $B\to K^{*}\gamma$ branching fractions determines the side $R_{t}$ of the
standard unitarity triangle with reduced hadronic uncertainties. The recent
Babar bound on $B(B^0\to\rho^0\gamma)$ implies $R_t < 0.81 (\xi/1.3)$, with the
limiting uncertainty coming only from the SU(3) breaking form factor ratio
$\xi$. This constraint is already getting competitive with the constraint from
$B_{s}$-$\bar B_{s}$ mixing. Phenomenological implications from
isospin-breaking effects are briefly discussed.


title: $k_T$ factorization of exclusive $B$ meson decays

abstract:
  I review recent progress on exclusive $B$ meson decays made in the
perturbative QCD approach, concentrating on the evolution of the $B$ meson wave
function in $k_T$ factorization, radiative decays, polarizations in $VV$ modes,
and new physics effect in $B\to \phi K_S$.


title: Baryon structure in a quark-confining non-local NJL model

abstract:
  We study the nucleon and diquarks in a non-local Nambu-Jona-Lasinio model.
For certain parameters the model exhibits quark confinement, in the form of a
propagator without real poles. After truncation of the two-body channels to the
scalar and axial-vector diquarks, a relativistic Faddeev equation for nucleon
bound states is solved in the covariant diquark-quark picture. The dependence
of the nucleon mass on diquark masses is studied in detail. We find parameters
that lead to a simultaneous reasonable description of pions and nucleons. Both
the diquarks contribute attractively to the nucleon mass. Axial-vector diquark
correlations are seen to be important, especially in the confining phase of the
model. We study the possible implications of quark confinement for the
description of the diquarks and the nucleon. In particular, we find that it
leads to a more compact nucleon.


title: Possible Interpretations of $D_{sJ}^+(2632)$ If It Really Exists

abstract:
  We analyze various possible interpretations of the narrow state
$D_{sJ}^+(2632)$ observed by SELEX Collaboration recently, which lies above
threshold and has abnormal decay pattern. These interpretations include: (1)
several versions of tetraquarks; (2) conventional $c\bar s$ meson such as the
first radial excitation of $D_s(2112)$ with abnormally large SU(3) symmetry
breaking; (3) conventional $c\bar s$ meson with abnormally large $\eta_1$
coupling; (4) heavy hybrid meson. We discuss the physical implications of each
interpretation. For example, if the existence of $D_{sJ}^+(2632)$ is confirmed
as the first radial excitation of $D_s(2112)$ by other experiments, it will be
helpful to look for (1) its SU(3) flavor partners $D_{J}^{0,+}(2530)$; (2) its
B-meson analogues $B_{J}^{0,+}(5840), B_{sJ}^+(5940)$; (3) S-wave two pion
decay modes.


title: A New Parametrization of the Neutrino Mixing Matrix

abstract:
  The neutrino mixing matrix is expanded in powers of a small parameter
$\lambda$, which approximately equals to 0.1. The meaning of every order of the
expansion is discussed respectively, and the range of $\lambda$ is carefully
calculated. We also present some applications of this new parametrization, such
as to the expression of the Jarlskog parameter $J$, in which the simplicities
and advantages of this parametrization are shown.


title: Glueball filled with the quark field as a model of nucleon

abstract:
  On the basis of the non-perturbative Heisenberg's quantization scheme and
using some simplifications and assumptions the reduction from the gluon-quark
Lagrangian to a scalar-fermion Lagrangian is made. The corresponding field
equations have a regular spherically symmetric solution which can be interpret
as a simplified model of nucleon. Some properties of such "nucleon" are
discused: the presence of a mass gap and spin $\neq \hbar /2$. The mass gap
describes the difference between the "nucleon" and the "nucleon" without quark
field (a scalar glueball). The presence of spin $\neq \hbar /2$ can be
connected with the spin problem of nucleon.


title: Time-varying Quark Masses and Cosmological Axion Energy

abstract:
  The possibility is examined that the masses of the light quarks $u$ and $d$
have varied over the course of the universe's evolution. Such a variation would
have an effect on axion cosmology, and can be the basis of a solution of the
so-called axion energy problem. If this is the case, a scalar force somewhat
weaker than gravity could exist that has a range of order 1 km.


title:
Chiral phase transition in hadronic matter: the influence of baryon
  density

abstract:
  A qualitative analysis of the chiral phase transition in QCD with two
massless quarks and non-zero baryon density is performed. It is assumed that at
zero baryonic density, $\rho=0$, the temperature phase transition is of the
second order and quark condesate $\eta=< 0\mid \bar{u} u\mid 0> =< 0 \mid
\bar{d}d\mid 0>$ may be taken as order parameter of phase transition. The
baryon masses strongly violate chiral symmetry, $m_B \sim < 0 \mid \bar{q}q\mid
0 >^{1/3}$. By supposing, that such specific dependence of baryon masses on
quark condensate takes place up to phase transition point, it is shown, that at
finite baryon density $\rho$ the phase transition becomes of the first order at
the temperature $T=T_{\mathrm{ph}}(\rho)$ for $\rho>0$. At temperatures
$T_{\mathrm{cont}}(\rho) > T > T_{\mathrm{ph}}(\rho)$ there is a mixed phase
consisting of the quark phase (stable) and the hadron phase (unstable). At the
temperature $T = T_{\mathrm{cont}}(\rho)$ the system experiences a continuous
transition to the pure chirally symmetric phase.


title: Heavy-quark production at large rapidities at hadron colliders

abstract:
  We investigate heavy-quark production as a function of the rapidity interval
between two heavy quarks in hadronic collisions. We compare the results
relevant to bottom production at the Tevatron and at LHC, obtained using exact
leading-order and NLO pQCD production, as well as the contribution of the 4b
channel with and without the addition of BFKL gluon radiation.


title: The Higgs Boson Mass in Split Supersymmetry at Two-Loops

abstract:
  The mass of the Higgs boson in the Split Supersymmetric Standard Model is
calculated, including all one-loop threshold effects and the renormalization
group evolution of the Higgs quartic coupling through two-loops. The two-loop
corrections are very small (<<1 GeV), while the one-loop threshold corrections
generally push the Higgs mass down several GeV.


title:
Gravitational clustering of relic neutrinos and implications for their
  detection

abstract:
  We study the gravitational clustering of big bang relic neutrinos onto
existing cold dark matter (CDM) and baryonic structures within the flat
$\Lambda$CDM model, using both numerical simulations and a semi-analytical
linear technique, with the aim of understanding the neutrinos' clustering
properties for direct detection purposes. In a comparative analysis, we find
that the linear technique systematically underestimates the amount of
clustering for a wide range of CDM halo and neutrino masses. This invalidates
earlier claims of the technique's applicability. We then compute the exact
phase space distribution of relic neutrinos in our neighbourhood at Earth, and
estimate the large scale neutrino density contrasts within the local
Greisen--Zatsepin--Kuzmin zone. With these findings, we discuss the
implications of gravitational neutrino clustering for scattering-based
detection methods, ranging from flux detection via Cavendish-type torsion
balances, to target detection using accelerator beams and cosmic rays. For
emission spectroscopy via resonant annihilation of extremely energetic cosmic
neutrinos on the relic neutrino background, we give new estimates for the
expected enhancement in the event rates in the direction of the Virgo cluster.


title: Entropy for Diquarks in exotic Quark States

abstract:
  We discuss the quantum state structure on the basis of $SU(3)_c$ for some
known exotic quark systems using a model which describes these particular
states as highly correlated diquarks and antidiquarks. We are then able to
calculate for a single colored diquark a finite von Neumann entropy from the
quantum reduced density matrix, from which we explicitly evaluate the
likelihood of certain arrangements of quark flavors in a given diquark. These
results can be related to some recently experimentally found pentaquark systems
as well as a possible model for the scalar mesons.


title: Possible Explanations for the NuTeV Weinberg Angle Measurement

abstract:
  The NuTeV collaboration has made an independent determination of the Weinberg
angle by measuring charged and neutral-current cross sections from neutrino and
antineutrino DIS on iron. Their value differs by 3 standard deviations from
that obtained from measurements at the Z pole. We review this experiment and
assess various possible explanations for this result, both within the Standard
Model ("old physics") and outside the Standard Model ("new physics").


title:
Efficient evolution of unpolarized and polarized parton distributions
  with QCD-PEGASUS

abstract:
  The Fortran package QCD-PEGASUS is presented. This program provides fast,
flexible and accurate solutions of the evolution equations for unpolarized and
polarized parton distributions of hadrons in perturbative QCD. The evolution is
performed using the symbolic moment-space solutions on a one-fits-all Mellin
inversion contour. User options include the order of the evolution including
the next-to-next-to-leading order in the unpolarized case, the type of the
evolution including an emulation of brute-force solutions, the evolution with a
fixed number n_f of flavours or in the variable-n_f scheme, and the evolution
with a renormalization scale unequal to the factorization scale. The initial
distributions are needed in a form facilitating the computation of the complex
Mellin moments.


title: Towards a fragmentation model for Sherpa

abstract:
  Some results highlighting the status of a new version of a cluster
fragmentation model for the Monte Carlo event generator Sherpa are presented.
In its present version this model is capable of simulating e+e- annihilation
events into light-quark and gluon jets. We compare results for different
multiplicity and momentum distributions to available SLD and LEP data as well
as to results obtained with Herwig and Pythia.


title: Neutrino Properties and Tests of Symmetries

abstract:
  The fact that neutrinos have mass allows them to possess many other
properties, like a magnetic dipole moment and a finite decay width. Theoretical
expectations for these are, however, well beyond current experimental bounds,
and the discovery of new exotic neutrino properties would indicate the presence
of (more) new physics. Here, I review some of the current bounds on exotic
neutrino properties. Neutrino experiments are unique probes of several
fundamental space-time symmetries, including invariance under CP and Lorentz
transformations. I discuss how precision neutrino experiments are used to test
some of the most fundamental principles of physics at unprecedented levels.


title: New Developments for Automatic Loop Calculations

abstract:
  Two methods to reduce the CPU time needed for the numerical evaluation of
cross-sections and similar quantities are discussed.


title: Signatures of long-lived gluinos in split supersymmetry

abstract:
  We examine the experimental signatures for the production of gluinos at
colliders and in cosmic rays within the split supersymmetry scenario. Unlike in
the MSSM, the gluinos in this model are relatively long-lived due to the large
value of the squark masses which mediate their decay. Searches at colliders are
found to be sensitive to the nature of gluino fragmentation as well as the
gluino-hadron interactions with nuclei and energy deposition as it traverses
the detector. We find that the worst-case scenario, where a neutral
gluino-hadron passes through the detector with little energy deposition, is
well described by a monojet signature. For this case, using Run I data we
obtain a bound of $m_{\tilde g} > 170$ GeV; this will increase to 210(1100) GeV
at Run II(LHC) if no excess events are observed. In the opposite case, where a
charged gluino-hadron travels through the detector, a significantly greater
reach is obtained via stable charged particle search techniques. We also
examine the production of gluino pairs in the atmosphere by cosmic rays and
show they are potentially observable at IceCube; this would provide a
cross-check for observations at hadron colliders.


title:
Universality of soft and collinear factors in hard-scattering
  factorization

abstract:
  Universality in QCD factorization of parton densities, fragmentation
functions, and soft factors is endangered by the process dependence of the
directions of Wilson lines in their definitions. We find a choice of directions
that is consistent with factorization and that gives universality between
e^+e^- annihilation, semi-inclusive deep-inelastic scattering, and the
Drell-Yan process. Universality is only modified by a time-reversal
transformation of the soft function and parton densities between Drell-Yan and
the other processes, whose only effect is the known reversal of sign for T-odd
parton densities like the Sivers function. The modifications of the definitions
needed to remove rapidity divergences with light-like Wilson lines do not
affect the results.


title: Towards Gravity-Gauge-Higgs Unification

abstract:
  We discuss a possibility to solve the gauge hierarchy problem in the
framework of Gravity-Gauge-Higgs Unification scenario. We have calculated
1-loop correction to the mass of the scalar field, which is originated from
55-component of the metric, in five dimensional gravity theory with the bulk
scalar field compactified on S^1. It is shown that the quadratic divergences
are canceled and the finite mass is generated by explicit diagrammatic
calculations and the effective potential calculations.


title: Do Chiral Soliton Models Predict Pentaquarks?

abstract:
  We reconsider the relationship between the bound state and the SU(3) rigid
rotator approaches to strangeness in chiral soliton models. For non-exotic
$S=-1$ baryons the bound state approach matches for small $m_K$ onto the rigid
rotator approach, and the bound state mode turns into the rotator zero-mode.
However, for small $m_K$, there are no $S=+1$ kaon bound states or resonances
in the spectrum. This shows that for large $N$ and small $m_K$ the exotic state
is an artifact of the rigid rotator approach. An $S=+1$ near-threshold state
with the quantum numbers of the $\Theta^+$ pentaquark comes into existence only
when sufficiently strong SU(3) breaking is introduced into the chiral
lagrangian. Therefore, pentaquarks are not generic predictions of the chiral
soliton models.


title:
A Model for the Twist-3 Wave Function of the Pion and Its Contribution
  to the Pion Form Factor

abstract:
  A model for the twist-3 wave function $\psi_p(x,\mathbf{k_\perp})$ of the
pion has been constructed based on the moment calculation by applying the QCD
sum rules, whose distribution amplitude has a better end-point behavior than
that of the asymptotic one. With this model wave function, the twist-3
contributions including both the usual helicity components
($\lambda_1+\lambda_2=0$) and the higher helicity components
($\lambda_1+\lambda_2=\pm 1$) to the pion form factor have been studied within
the modified pQCD approach. Our results show that the twist-3 contribution
drops fast and it becomes less than the twist-2 contribution at $Q^2\sim
10GeV^2$. The higher helicity components in the twist-3 wave function will give
an extra suppression to the pion form factor. The model dependence of the
twist-3 contribution to the pion form factor has been studied by comparing
three different models. When all the power contributions, which include higher
order in $\alpha_s$, higher helicities, higher twists in DA and etc., have been
taken into account, it is expected that the hard contributions will fit the
present experimental data well at the energy region where pQCD is applicable.


title:
What Hath RHIC Wrought ? : The Chiral Restoration Phase Transition Found
  at RHIC

abstract:
  Given Brown/Rho scaling we thought of the mesons which are observed in
Nambu-Jona Lasinio theory as collective modes. The pi, sigma, rho and A_1,
should go smoothly through T_c as the temperature rose, going massless as T
comes to T_c.


title:
A dynamical gluon mass solution in a coupled system of the
  Schwinger-Dyson equations

abstract:
  We study numerically the Schwinger-Dyson equations for the coupled system of
gluon and ghost propagators in the Landau gauge and in the case of pure gauge
QCD. We show that a dynamical mass for the gluon propagator arises as a
solution while the ghost propagator develops an enhanced behavior in the
infrared regime of QCD. Simple analytical expressions are proposed for the
propagators, and the mass dependency on the $\Lambda_{QCD}$ scale and its
perturbative scaling are studied. We discuss the implications of our results
for the infrared behavior of the coupling constant, which, according to fits
for the propagators infrared behavior, seems to indicate that $\alpha_s (q^2)
\to 0$ as $q^2 \to 0$.


title: Saturation scale from the Balitsky-Kovchegov equation

abstract:
  Recently Munier and Peschanski presented an analysis of the
Balitsky--Kovchegov (BK) equation concerning the extraction of the saturation
scale, using a simpler equation. We numerically analyze the full BK equation
confirming the universality of their analysis.


title: Light Strange-beauty Squarks

abstract:
  We summarize a study on the production, decay, and detection of the
strange-beauty squark as light as 200 GeV at hadronic and $e^+ e^-$ colliders.
It was motivated by nearly maximal mixing between strange and beauty squarks.


title:
Thermodynamics of the 1+1-dimensional nonlinear sigma model through
  next-to-leading order in 1/N

abstract:
  We discuss the thermodynamics of the O(N) nonlinear sigma model in 1+1
dimensions. In particular we investigate the NLO 1/N correction to the 1PI
finite temperature effective potential expressed in terms of an auxiliary
field. The effective potential contains temperature-dependent divergences which
cannot be renormalized properly. We argue that this problem vanishes at the
minimum of the effective potential. Therefore physical quantities like the
pressure are well defined and can be renormalized in a temperature-independent
way. We give a general argument for the occurrence of temperature-dependent
divergences outside the minimum. We present calculations of the pressure and
show that 1/N is a good expansion. It turns out that the pressure normalized to
that at infinite temperature is N-independent like the flavor independence of
the same quantity in QCD.


title: Production and detection of doubly charmed tetraquarks

abstract:
  The feasibility of tetraquark detection is studied. For the cc\bar{u}\bar{d}
tetraquark we show that in present (SELEX, Tevatron, RHIC) and future
facilities (LHCb, ALICE) the production rate is promising and we propose some
detectable decay channels.


title: Determination of the HWW and HZZ Couplings at the LHC

abstract:
  The weak boson fusion process for neutral Higgs boson production is
investigated with particular attention to the accuracy with which the Higgs
boson couplings to weak bosons can be determined in final states that contain a
Higgs boson plus at least two jets at CERN Large Hadron Collider energies. We
determine that an accuracy of \delta g/g ~ 10% on the effective coupling g may
be possible after the accumulation of ~ 200 inverse fb of integrated
luminosity.


title:
A New Approach to the Phenomenology of Cosmological Supersymmetry
  Breaking

abstract:
  I introduce a new low energy effective description of Cosmological SUSY
breaking. It requires the existence of a strongly interacting gauge theory at a
scale of order $10^3$ GeV, some of whose fields carry standard model quantum
numbers. SUSY breaking is communicated to the standard model through gaugino
masses and the Higgs multiplets. The model also provides a possible new
solution of the strong CP problem


title: Extraction of two-photon contributions to the proton form factors

abstract:
  Significant discrepancies have been observed between proton form factors as
measured by Rosenbluth separation and polarization transfer techniques. There
are indications that this difference may be caused by corrections to the one
photon exchange approximation that are not taken into account in standard
radiative correction procedures. In this paper, we constrain the two-photon
amplitudes by combining data from Rosenbluth, polarization transfer, and
positron-proton scattering measurements. This allows a rough extraction of
these two-photon effects in elastic electron-proton scattering, and provides an
improved extraction of the proton electromagnetic form factors.


title: Universal Non-Oblique Corrections in Higgsless Models and Beyond

abstract:
  Recently Barbieri, et al. have introduced a formalism to express the
deviations of electroweak interactions from their standard model forms in
"universal" theories, i.e. theories in which the corrections due to new physics
can be expressed solely by modifications to the two-point correlation function
of electroweak gauge currents of fermions. The parameters introduced by these
authors are defined by the properties of the correlation functions at zero
momentum, and differ from the quantities calculated by examining the on-shell
properties of the electroweak gauge bosons. In this letter we discuss the
relationship between the zero-momentum and on-shell parameters. In addition, we
present the results of a calculation of these zero-momentum parameters in an
arbitrary Higgsless model in which the low-energy rho parameter is one and
which can be deconstructed to a linear chain of SU(2) groups adjacent to a
chain of U(1) groups. Our results demonstrate the importance of the universal
"non-oblique" corrections which are present and elucidate the relationships
among various calculations of electroweak quantities in these models. Our
expressions for these zero-momentum parameters depend only on the spectrum of
heavy vector-boson masses; therefore, the minimum size of the deviations
present in these models is related to the upper bound on the heavy vector-boson
masses derived from unitarity. We find that these models are disfavored by
precision electroweak data, independent of any assumptions about the background
metric or the behavior of the bulk coupling.


title: Negative-Parity Heavy Pentaquark States in 1/N_c

abstract:
  The 1/N_c expansion for negative-parity heavy pentaquarks is developed using
the formalism introduced for excited baryons in large N_c. Relations are found
between the mass splittings of these pentaquarks and those of nonexotic
baryons.


title: Atmospheric neutrinos as probes of neutrino-matter interactions

abstract:
  Neutrino oscillation experiments provide a unique tool for probing
neutrino-matter interactions, especially those involving the tau neutrino. We
describe the sensitivity of the present atmospheric neutrino data to these
interactions in the framework of a three-flavor analysis. Compared to the
two-flavor nu_mu-nu_tau analyses, we find qualitatively new features, in
particular, that large non-standard interactions, comparable in strength to
those in the Standard Model, can be consistent with the data. The existence of
such interactions could imply a smaller value of the neutrino mixing angle and
larger value of the mass-squared splitting than in the case of standard
interactions only. This and other effects of non-standard interactions may be
tested in the next several years by MINOS, KamLAND and solar neutrino
experiments.


title:
"Classical" instabilities and "quantum" speed-up in the evolution of
  neutrino clouds

abstract:
  We study some examples of collective behavior in neutrino clouds governed by
the neutral-current neutrino-neutrino interaction. The standard equations for
analyzing such systems are rederived in a two-step process: first, a
replacement of the full interaction Hamiltonian with a "forward" Hamiltonian
that contains only the momentum states that were initially occupied by a
neutrino of one flavor or another; second, a factorization assumption that
reduces the time evolution problem to the solution of coupled equations for the
expectations of various bilinear forms in the neutrino fields. We designate the
latter as the "classical" equations. We analyze some solutions of these
equations in cases in which the initial momentum and flavor distributions of
neutrinos are strongly anisotropic in space. In some cases we find an
instability that leads to rapid evolution of the flavor-angle distribution,
even when it is seeded by a very small initial flavor mixing (or alternatively
by a very small neutrino mass$^2$ term). Turning to the more complete case in
which we do not assume the classical factorization, but instead solve for the
evolution under the influence of the full "forward" Hamiltonian, we find the
possibility of rapid evolution, under our definition, even when there is no
seeding from conventional neutrino mixing.


title:
Charges and Coupling Strengths in Gauge Theories with Direct Product
  Symmetry Groups

abstract:
  For gauge theories with direct product internal symmetry groups, the
relationship between internal quantum numbers (charges) and coupling strengths
is examined. In these types of theories, the Lagrangian density may contain
non-trivial factors multiplying the matter field terms, and these factors can
modify the interaction coupling strengths i.e., the gauge/matter field vertex
factors. Consequently, a matter field can carry a given internal charge yet
couple to the associated gauge field with an apparent fractional charge. An
example with $SU(3)\otimes U(2)$ symmetry is presented in which the matter
fields can have integer U(2) charges but fractional U(2) coupling strengths.


title: The CKM matrix and CP Violation

abstract:
  The status of CP violation and the CKM matrix is reviewed. Direct CP
violation in B decay has been established and the measurement of sin(2beta) in
\psi K modes reached 5% accuracy. I discuss the implications of these, and of
the possible deviations of the CP asymmetries in b->s modes from that in \psi
K. The first meaningful measurements of alpha and gamma are explained, together
with their significance for constraining both the SM and new physics in B-Bbar
mixing. I also discuss implications of recent developments in the theory of
nonleptonic decays for B->pi K rates and CP asymmetries, and for the
polarization in charmless B decays to two vector mesons.


title: Screening masses in neutral two-flavor color superconductor

abstract:
  The Debye and Meissner screening masses of the gluons and the photon in
neutral and beta-equilibrated dense two-flavor quark matter are calculated. The
results are presented in a general form that can be used in gapped as well as
gapless color superconducting phases. The results for the magnetic screening
masses indicate that the system develops a chromomagnetic instability. Possible
consequences of the instability are discussed.


title: Loop Calculations: Summary

abstract:
  Current and future colliders will provide high precision experimental data.
In order to use the high experimental precision it has to be matched with
theoretical predictions at the same level of accuracy or better. This involves
the calculation of loop corrections at increasingly higher order. We briefly
review the status of the field, especially in view of the calculations
presented at this conference. We give an outlook about the theoretical
requirements for the anticipated precision of a future e+e- linear collider.


title:
Search for extra gauge bosons in Little Higgs models at a linear
  collider

abstract:
  A generic feature of little Higgs models is presence of extra neutral gauge
bosons. In the littlest Higgs model, the neutral extra gauge boson A_H is
lightest among the extra particles and could be as light as a few hundred GeV,
which may be produced directly at an e^+ e^- linear collider. We study
production and decay of A_H at the linear collider and compare them with those
of Z' bosons in supersymmetric E_6 models.


title: Late-decaying Q-ball with BBN lifetime

abstract:
  In the Affleck-Dine mechanism of baryogenesis, non-topological solitons
called Q-balls can be formed. In this work we study the Q-balls which decay
during the Big Bang Nucleosythesis (BBN) era. We show that such late-decaying
baryonic Q-balls with lifetime of about 10^3 s can provide a new developing
mechanism for the BBN through a rolling baryon to photon ratio \eta, which can
naturally explain the discrepancy of BBN prediction with the WMAP data on ^7Li
abundance. For the late-decaying leptonic Q-balls with lifetime of about 10^6
s, we find that their decay product, gravitino, can serve as a dark matter
candidate without overclosing the universe and, at the same time, can give an
explanation of the approximate equality of dark and baryon matter densities.


title: Nonpower Expansions for QCD Observables at Low Energies

abstract:
  A comprehensive review is presented of the progress made in further
developing the ghost-free Analytic Approach to low-energy QCD since "QCD-97"
meeting. It is now formulated as a logically closed ``Analytic Perturbation
Theory" algorithm. Its most essential feature is nonpower functional expansions
for QCD observables.


title: Shape Function Effects in B -> X_c l \nu_l

abstract:
  Owing to the fact that m_c^2 ~ m_b \Lambda_QCD, the endpoint region of the
charged lepton energy spectrum in the inclusive decay B -> X_c l \nu_l is
affected by the Fermi motion of the initial-state b quark bound in the B meson.
This effect is described in QCD by shape functions. Including the mass of the
final-state quark, we find that a different set of operators as employed in
Ref. hep-ph/0205150 is needed for a consistent matching, when incorporating the
subleading contributions in B -> X_q l \nu_l for both q = u and q = c. In
addition, we modify the usual twist expansion in such a way that it yields a
description of the lepton energy spectrum which is not just valid in the
endpoint region, but over the entire phase space.


title: Spectroscopy of doubly charmed baryons

abstract:
  We study the mass spectrum of baryons with two and three charmed quarks. For
double charm baryons the spin splitting is found to be smaller than standard
quark-model potential predictions. This splitting is not influenced either by
the particular form of the confining potential or by the regularization taken
for the contact term of the spin-spin potential. We consistently predict the
spectra for triply charmed baryons.


title:
Collisional Energy Loss of a Heavy Quark in an Anisotropic Quark-Gluon
  Plasma

abstract:
  We compute the leading-order collisional energy loss of a heavy quark
propagating through a quark-gluon plasma in which the quark and gluon
distributions are anisotropic in momentum space. Following the calculation
outlined for QED in an earlier work we indicate the differences encountered in
QCD and their effect on the collisional energy loss results. For a 20 GeV
bottom quark we show that momentum space anisotropies can result in the
collisional heavy quark energy loss varying with the angle of propagation by up
to 50%. For low velocity quarks we show that anisotropies result in energy gain
instead of energy loss with the energy gain focused in such a way as to
accelerate particles along the anisotropy direction thereby reducing the
momentum-space anisotropy. The origin of this negative energy loss is
explicitly identified as being related to the presence of plasma instabilities
in the system.


title: Lepton Flavor Violation in the Higgs Boson Decay at a Linear Collider

abstract:
  We study possibility of observing the process $h^{0} \to \tau^{\pm}
\mu^{\mp}$ at a linear collider. The branching ratio is constrained to be of
the order of $10^{-4}$ by the $\tau^{-} \to \mu^{-} \eta$ result.
Supersymmetric standard models can reproduce such amount of the branching ratio
by taking a specific parameter set. The Higgsstrahlung process $e^{+}e^{-} \to
Zh^{0}$ is preferable because of its simple kinematic structure, then, the
signal process is $e^{+} e^{-} \to Z h^{0} \to Z \tau^{\pm} \mu^{\mp}$. The
most serious background comes from the process, $e^{+} e^{-} \to Zh^{0} \to
Z\tau^{\pm} \tau^{\mp} \to \tau^{\pm} \mu^{\mp} \nu \bar{\nu}$. We estimate the
significance of the signal, taking into account the background reduction.


title:
Regge behaviour of structure functions and DGLAP evolution equation in
  leading order

abstract:
  In this paper, we find the t and x-evolution of deuteron structure function
from DGLAP evolution equation of singlet structure function in leading order at
small-x assuming the Regge behaviour of the singlet structure function at this
limit and we compare our result of deuteron structure function with New Muon
Collaboration data to find the range of the intercept of Regge behaviour for
deuteron structure function. We also discuss the limitations of Taylor series
expansion method in the Regge behaviour of structure function.


title: Status of NNLO 3-jet calculations

abstract:
  The process e+ e- -> 3 jets offers the opportunity to measure the strong
coupling constant. For an accurate determination, precise theoretical
calculations are necessary. I will give an overview on the status of the
next-to-next-to-leading order calculations.


title: Probing Minimal 5D Extensions of the Standard Model

abstract:
  We analyze non-universal 5D standard model extension, where some or all of
the gauge and Higgs fields propagate in a flat extra dimension, while all other
degrees of freedom are localized on a S^1/Z_2 orbifold brane. From LEP data,
model-dependent bounds on the compactification scale M between 4 and 6 TeV are
derived. We analyze the correlations between M and the SM Higgs mass m_H.
Investigating the prospects at an e^+e^- linear collider such as TESLA, we show
that the so-called GigaZ option has the potential to improve the LEP bounds by
about a factor 2. At the center of mass energy of 800 GeV and with an
integrated luminosity of 10^3 fb^{-1}, linear collider experiments can probe
compactification scales up to 20-30 TeV and beyond, depending on the systematic
errors.


title:
J/psi plus prompt-photon associated production in two-photon collisions
  at next-to-leading order

abstract:
  We calculate the cross section of J/psi plus prompt-photon inclusive
production in gamma gamma collisions at next-to-leading order within the
factorization formalism of nonrelativistic quantum chromodynamics (NRQCD)
focusing on direct photoproduction. Apart from direct J/psi production, we also
include the feed-down from directly-produced chi_{cJ} and psi' mesons. We
discuss the analytical calculation, in particular the treatment of the various
types of singularities and the NRQCD operator renormalization, in some detail.
We present theoretical predictions for the future e^+e^- linear collider TESLA,
taking into account both brems- and beamstrahlung.


title: Chiral Condensates, Q_7 and Q_8 Matrix Elements and Large-N_c QCD

abstract:
  The correlation function of a $V-A$ current with a $V+A$ current is discussed
within the framework of QCD in the limit of a large number of colours $N_c$.
Applications to the evaluation of chiral condensates of dimension six and
higher, as well as to the matrix elements of the $Q_7$ and $Q_8$ electroweak
penguin operators are discussed. A critical comparison with previous
determinations of the same parameters has also been made.


title:
Temperature Dependence of Gluon and Ghost Propagators in Landau-Gauge
  Yang-Mills Theory below the Phase Transition

abstract:
  The Dyson-Schwinger equations of Landau-gauge Yang-Mills theory for the gluon
and ghost propagators are investigated. Numerical results are obtained within a
truncation scheme which has proven to be successful at vanishing temperature.
For temperatures up to 250 MeV we find only minor quantitative changes in the
infrared behaviour of the gluon and ghost propagators. The effective action
calculated from these propagators is temperature-independent within the
numerical uncertainty.


title: SUSY Les Houches Accord I/O made easy

abstract:
  A library for reading and writing data in the SUSY Les Houches Accord format
is presented. The implementation is in native Fortran 77. The data are
contained in a single array conveniently indexed by preprocessor statements.


title: Probing Split Supersymmetry with Cosmic Rays

abstract:
  A striking aspect of the recently proposed split supersymmetry is the
existence of heavy gluinos which are metastable because of the very heavy
squarks which mediate their decay. In this paper we correlate the expected flux
of these particles with the accompanying neutrino flux produced in inelastic
$pp$ collisions in distant astrophysical sources. We show that an event rate at
the Pierre Auger Observatory of approximately 1 yr$^{-1}$ for gluino masses of
about 500 GeV is consistent with existing limits on neutrino fluxes. The
extremely low inelasticity of the gluino-containing hadrons in their collisions
with the air molecules makes possible a distinct characterization of the
showers induced in the atmosphere. Should such anomalous events be observed, we
show that their cosmogenic origin, in concert with the requirement that they
reach the Earth before decay, leads to a lower bound on their proper lifetime
of the order of 100 years, and consequently, to a lower bound on the scale of
supersymmetry breaking, $\Lambda_{\rm SUSY} >2.6 \times 10^{11}$ GeV. Obtaining
such a bound is not possible in collider experiments.


title: The Cherenkov effect in Lorentz-violating vacua

abstract:
  The emission of electromagnetic radiation by charges moving uniformly in a
Lorentz-violating vacuum is studied. The analysis is performed within the
classical Maxwell-Chern-Simons limit of the Standard-Model Extension (SME) and
confirms the possibility of a Cherenkov-type effect. In this context, various
properties of Cherenkov radiation including the rate, polarization, and
propagation features, are discussed, and the back-reaction on the charge is
investigated. An interpretation of this effect supplementing the conventional
one is given. The emerging physical picture leads to a universal methodology
for studying the Cherenkov effect in more general situations.


title: Longitudinal Gluon Polarization in RHIC Double-Spin Asymmetries

abstract:
  The longitudinally polarized gluon density is probed sensitively in hard
collisions of polarized protons under the condition that the dominant dynamics
are perturbative and of leading twist origin. First data have recently been
presented by Phenix on the double-spin asymmetry A_{LL}^{pi} for pi^0
production at moderate transverse momentum p_\perp \simeq 1 - 4 GeV and central
rapidity. By means of a systematic investigation of the relevant degrees of
freedom we show that the perturbative QCD framework at leading power in p_\perp
produces an asymmetry that is basically positive definite in this kinematic
range, i.e. A_{LL}^{pi}\gtrsim O(-10^{-3}) .


title:
Neutrino-Production of Charm and the Strangeness Asymmetry of the
  Nucleon

abstract:
  Interest in the strange nucleon sea has been renewed when it was realized
that the strangeness asymmetry $s^-=s-\bar{s}$ plays a prominent role in the
interpretation of the NuTeV weak mixing angle anomaly. I review the NLO QCD
calculation of the neutrino-production of opposite-sign dimuons as the
experimental signature of the strange quark parton density. Results from a
recent CTEQ fit are presented and discussed with respect to their stability
under NLO corrections and their impact on the NuTeV measurement.


title: Volkov solution for an electron in the two wave fields

abstract:
  It is considered the Dirac equation with two different four-potentials of the
plane electromagnetic waves. We derive the equation for the wave function which
is generalized form of the Volkov equation. We find the solutions of the Dirac
equation for two orthogonal waves. We determine the modified Compton formula
for the scattering of two photons on an electron.


title:
Leptogenesis as the source of gravitino dark matter and density
  perturbations

abstract:
  We investigate the possibility that the entropy producing decay of a
right-handed sneutrino condensate can simultaneously be the source of the
baryon asymmetry, of gravitino dark matter, and of cosmological density
perturbations. For generic values of soft supersymmetry breaking terms in the
visible sector of 1-10 TeV, condensate decay can yield the dark matter
abundance for gravitinos in the mass range 1 MeV to 1 TeV, provided that the
resulting reheat temperature is below $10^6$ GeV. The abundance of thermally
produced gravitinos before and after sneutrino decay is then negligible. We
consider different leptogenesis mechanisms to generate a sufficient asymmetry,
and find that low-scale soft leptogenesis works most naturally at such
temperatures. The condensate can easily generate sufficient density
perturbations if its initial amplitude is $\sim {\cal O}(M_{\rm GUT})$, for a
Hubble expansion rate during inflation $> 10^9$ GeV. Right-handed sneutrinos
may therefore at the same time provide a source for baryogenesis, dark matter
and the seed of structure formation.


title: Relation between the chiral and deconfinement phase transitions

abstract:
  Lattice QCD simulations at finite temperature have shown that the chiral
phase transition in the chiral limit and the deconfinement phase transition in
the quenched limit are continuously connected. I emphasize the nontriviality of
this result and propose an unconventional scenario which naturally explains the
existing lattice data. The continuity of the two phase transitions is a
manifestation of the familiar glueball-meson mixing, which can be traced back
to the properties of QCD at zero temperature.


title: Unification, Multiplets and Proton Decay

abstract:
  We make a detailed analysis of gauge coupling unification in supersymmetry.
When the Standard Model gauge group is embedded in a Grand Unified Theory, new
particles often appear below the GUT scale in order to predict the right
phenomenology at low energy. While these new particles are beyond the reach of
accelerator experiments, they change the prediction of \alpha_s. Here we
classify all the (SU(3)_C,SU(2)_L,U(1)_Y) representations which improve or
worsen the prediction. Running experimentally determined values of the coupling
constants at two loops we calculate the allowed range of masses of fields in
these representations. We explore the implication of these results in SU(5) and
SU(3)^3 (trinification) models. We discover that minimal trinification predicts
light triplet Higgs particles which lead to proton decay with a lifetime in the
vicinity of the current experimental bound.


title: Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly

abstract:
  We calculate the strange quark and antiquark distributions of the nucleon by
using the effective chiral quark model, and find that the strange-antistrange
asymmetry can bring a contribution of about 60--100% to the NuTeV deviation of
$\sin^{2}\theta_{w}$ from the standard value measured in other electroweak
processes. The results are insensitive to different inputs. The light-flavor
quark asymmetry of $\bar{d}-\bar{u}$ is also investigated and found to be
consistent with the experimental measurements. Therefore the chiral quark model
provides a successful picture to understand the NuTeV anomaly, as well as the
light-flavor quark asymmetry and the proton spin problem in previous studies.


title: Negative parity pentaquarks in large Nc QCD and quark model

abstract:
  Recently, the 1/Nc expansion has been applied to the study of exotic baryons
containing both quarks and antiquarks. We extend this approach to exotic states
with mixed symmetric spin-flavor symmetry, which correspond in the quark model
to negative parity pentaquarks, and discuss the large Nc predictions for their
mass spectrum. The heavy exotics Qbar q^4 transform as 3, 6bar,15 and 15' under
flavor SU(3), while the light states include the exotic multiplets 10bar, 27,
35. We give mass relations among these multiplets following from the 1/Nc
expansion. In the quark model, the mass splittings between these states are
given by color-spin interactions. Using the observation of an anticharmed
exotic by the H1 collaboration, we give predictions for the masses of other
expected heavy pentaquarks.


title: Dual chiral density wave in quark matter

abstract:
  Possible manifestation of a dual chiral density wave in quark matter is
discussed in relation to the chiral symmetry of QCD, which is described by a
dual standing wave of the scalar and pseudo-scalar densities. It is
demonstrated that quark matter is unstable for forming the dual chiral density
wave at moderate densities in the Nambu-Jona-Lasinio model;accordingly the
critical density for restoration of chiral symmetry becomes higher than ever
considered. A unique magnetic property is also pointed out in the new phase.


title:
Searching for signals of minimal length in extra dimensional models
  using dilepton production at hadron colliders

abstract:
  Theories of quantum gravity suggest the existence of a minimal length scale.
It is interesting to speculate what the consequences of the existence of such a
length scale would be for models of large extra dimensions, in particular, the
ADD model. When ADD model is conflated with the minimal length scale scenario,
processes involving virtual exhange of gravitons cease to be ulraviolent
divergent. We study the production of dileptons at hadron colliders as an
example of a process mediated by virtual gravitons. We find that the bounds we
derive on the effective string scale are significantly different (in fact, less
stringent) from those derived in the conventional ADD model, both at the
upgraded Tevatron and the Large Hadron Collider.


title: R-parity violation in split supersymmetry

abstract:
  In the recently proposed `split supersymmetry' scenario, the squark and
slepton masses are allowed to be at a high scale while the gauginos and
Higgsinos are within a TeV. We show that in a theory with broken R-parity, the
parameter space of such a scenario allows a situation where the lightest
neutralino is still stable on the cosmological scale and can be a dark matter
candidate. We also separate the cases where (a) it may be invisible but not a
dark matter candidate, or (b) it may decay showing a displaced vertex. It is
also emphasized how the constraint on the simultaneous violation of baryon and
lepton numbers gets relaxed in this scenario.


title: B-> X_sl^+l^- and B->K\pi decays in vectorlike quark model

abstract:
  In the framework of SU(2) singlet down type vectorlike quark model, we
present a comprehensive analysis for decays B-> X_s \gamma, B->X_sl^+l^- and
B-> K\pi. As for B-> X_s\gamma, we include the QCD running from the mass of the
down-type vector quark D to weak scale in the scenario with the D quark much
heavier than weak scale, and find that the running effect is small. Using the
recent measurements of B-> X_sl^+l^-, we extract rather stringent constraints
on the size and CP violating phase of z_{sb}, i.e., the tree level FCNC
coupling for b-> sZ. Within the bounds, we investigate various observables such
as forward-backward asymmetry of b->s l^+ l^-, the decay rates of B
->X_s\gamma, and B\to K\pi. We find that (1) The forward-backward asymmetry may
have large derivation from that of the SM and is very sensitive to z_{sb}, and
thus can be useful in probing the new physics.(2) By taking experimental errors
at 2\sigma level, both experimental measurements for B->X_sl^+l^- and B->K\pi
decays can be explained in this model.


title:
Non-factorizable contributions to $\bar{B^0_d} \to D_s^{(*)}
  \bar{D_s^{(*)}}$

abstract:
  It is pointed out that decays of the type $B \to D \bar{D}$ have no
factorizable contributions, unless at least one of the charmed mesons in the
final state is a vector meson. The dominant contributions to the decay
amplitudes arise from chiral loop contributions and tree level amplitudes
generated by soft gluon emissions forming a gluon condensate. We predict that
the branching ratios for the processes $\bar B^0 \to D_s^+ D_s^-$,
  $\bar B^0 \to D_s^{+*} D_s^- $ and $\bar B^0 \to D_s^+ D_s^{-*}$ are all of
order $(3- 4) \times 10^{-4}$, while $\bar B^0 \to D_s^{+*} D_s^{-*}$ has a
branching ratio 5 to 10 times bigger. We emphasize that the branching ratios
are sensitive to $1/m_c$ corrections.


title: Residual Confinement in High-Temperature Yang-Mills Theory

abstract:
  The infrared behavior of Landau gauge gluon and ghost propagators are
investigated in Yang-Mills theory at non-vanishing temperatures.
Self-consistent solutions are presented for temperatures below the presumed
phase transition and in the infinite temperature limit. Gluon confinement is
manifest in the infrared behavior of these propagators. As expected confinement
prevails below the phase transition. In the infinite-temperature limit a
qualitative change is observed: the chromoelectric sector exhibits a
near-perturbative behavior while long-range chromomagnetic interactions,
mediated by soft ghost modes, are still present. The latter behavior is in
agreement with corresponding lattice results. It furthermore implies that part
of the gluons are still confined.


title:
The hidden strangeness mechanism in Ds^+ -> omega pi^+ and Ds^+ -> rho^0
  pi^+ decays

abstract:
  We study possible contributions to the Ds^+ -> omega pi^+ and Ds^+ -> rho^0
pi^+ decay amplitudes. The Ds^+ -> omega pi^+ decay amplitude vanishes when the
naive factorization is used, while the Ds^+ -> rho^0 pi^+ decay amplitude
arises due to the annihilation contribution. We find that amplitudes for both
decays might be a result of the internal K, K^* exchange. The Ds^+ -> omega
pi^+ amplitude might obtain additional contribution from Ds^+ -> rho^0 eta
(eta') re-scattering. The low experimental bound on the Ds^+ -> rho^0 pi^+ rate
can be understood as a result of combination of the pi(1300) pole dominated
annihilation contribution and the K,K^* internal exchanges. The calculated
branching fractions for Ds^+ -> omega pi^+ and Ds^+ -> rho^0 pi^+ are in
agreement with the current experimental results.


title:
Dilute monopole gas, magnetic screening and k-tensions in hot
  gluodynamics

abstract:
  An adjoint multiplet of screened monopoles forming a dilute gas fits very
well lattice data at high $T$. There are now seven ratios for k-strings
available, checking within a few percent with the prediction $k(N-k)$. The
diluteness turns out to be a small parameter for SU(N) gluodynamics, to a good
approximation ($1\over N^2$) independent of the value of $N$, and also
independent of $T$. This suggests a dilute Bose-Einstein gas, with a BE
transition at the deconfinement temperature $T_c$.


title:
Transverse-Momentum-Ordered Showers and Interleaved Multiple
  Interactions

abstract:
  We propose a sophisticated framework for high-energy hadronic collisions,
wherein different QCD physics processes are interleaved in a common sequence of
falling transverse-momentum values. Thereby phase-space competition is
introduced between multiple parton-parton interactions and initial-state
radiation. As a first step we develop new transverse-momentum-ordered showers
for initial- and final-state radiation, which should be of use also beyond the
scope of the current article. These showers are then applied in the context of
multiple interactions, and a few tests of the new model are presented. The
article concludes with an outlook on further aspects, such as the possibility
of a shower branching giving partons participating in two different
interactions.


title: Influence of diffractive interactions on cosmic ray air showers

abstract:
  A comparative study of commonly used hadronic collision simulation packages
is presented. The characteristics of the products of hadron-nucleus collisions
are analyzed from a general perspective, but focusing on their correlation with
diffractive processes. One of the purposes of our work is to give quantitative
estimations of the impact that different characteristics of the hadronic models
have on air shower observables. Several sets of shower simulations using
different settings for the parameters controlling the diffractive processes are
used to analyze the correlations between diffractivity and shower observables.
We find that the relative probability of diffractive processes during the
shower development have a non negligible influence over the longitudinal
profile as well as the distribution of muons at ground level. The implications
on experimental data analysis are discussed.


title:
General Parton Distributions and Counting of Helicity-Flip Nucleon Form
  Factors

abstract:
  We give a brief overview of the General Parton Distributions(GPDs), including
their properties, connections to conventional quantities, and relationships to
physical observables. We also perform a systematic analysis on the non-forward
matrix elements of twist-two quark and gluon helicity-flip operators and
explain their relationships to the GPDs. We systematically count the number of
independent nucleon form factors in non-forward scattering (of matrix elements
of these operators), by matching the allowed quantum numbers with their
crossing channel counterparts and time reversal symmetry considerations. We
finally analyze and write down the form factor expansion of the quark operator
matrix elements.


title: Quarks with Integer Electric Charge

abstract:
  Within the context of the Standard Model, quarks are placed in a
$(\mathbf{3},\mathbf{2})\oplus (\mathbf{3},\bar{\mathbf{2}})$ matter field
representation of $U_{EW}(2)$. Although the quarks carry unit intrinsic
electric charge in this construction, anomaly cancellation constrains the
Lagrangian in such a way that the quarks' associated currents couple to the
photon with the usual 2/3 and 1/3 fractional electric charge associated with
conventional quarks. The resulting model is identical to the Standard Model in
the $SU_C(3)$ sector: However, in the $U_{EW}(2)$ sector it is similar but not
necessarily equivalent. Off hand, the model appears to be phenomenologically
equivalent to the conventional quark model in the electroweak sector for
experimental conditions that preclude observation of individual constituent
currents. On the other hand, it is conceivable that detailed analyses for
electroweak reactions may reveal discrepancies with the Standard Model in high
energy and/or large momentum transfer reactions.
  The possibility of quarks with integer electric charge strongly suggests the
notion that leptons and quarks are merely different manifestations of the same
underlying field. A speculative model is proposed in which a phase transition
is assumed to occur between $SU_C(3)\otimes U_{EM}(1)$ and $U_{EM}(1)$ regimes.
This immediately; explains the equality of lepton/quark generations and
lepton/hadron electric charge, relates neutrino oscillations to quark flavor
mixing, reduces the free parameters of the Standard Model, and renders the
issue of quark confinement moot.


title: Semileptonic decays of $D$ mesons in three-flavor lattice QCD

abstract:
  We present the first three-flavor lattice QCD calculations for $D\to \pi
l\nu$ and $D\to K l\nu$ semileptonic decays. Simulations are carried out using
ensembles of unquenched gauge fields generated by the MILC collaboration. With
an improved staggered action for light quarks, we are able to simulate at light
quark masses down to 1/8 of the strange mass. Consequently, the systematic
error from the chiral extrapolation is much smaller than in previous
calculations with Wilson-type light quarks. Our results for the form factors at
$q^2=0$ are $f_+^{D\to\pi}(0)=0.64(3)(6)$ and $f_+^{D\to K}(0) = 0.73(3)(7)$,
where the first error is statistical and the second is systematic, added in
quadrature. Combining our results with experimental branching ratios, we obtain
the CKM matrix elements $|V_{cd}|=0.239(10)(24)(20)$ and
$|V_{cs}|=0.969(39)(94)(24)$, where the last errors are from experimental
uncertainties.


title:
Complete one-loop calculations in the chargino/neutralino sector of the
  MSSM

abstract:
  The present status of the calculation of radiative corrections to chargino
and neutralino pair production processes in the MSSM is summarized. The main
focus will be on the use of the on-shell renormalization scheme for charginos
and neutralinos in conjunction with DR-bar parameters, such as those of the SPA
conventions. Associated soft and hard bremsstrahlung and an appropriate
separation of QED-like parts in the full one-loop contributions will be
addressed.


title:
Logarithmic electroweak corrections to hadronic Z+1 jet production at
  large transverse momentum

abstract:
  We consider hadronic production of a Z boson in association with a jet and
study one- and two-loop electroweak logarithmic corrections in the region of
high Z-boson transverse momentum, p_T >> M_Z, including leading and
next-to-leading logarithms. Numerical results for the LHC and Tevatron
colliders are presented. At the LHC these corrections amount to tens of per
cent and will be important for interpretation of the measurements.


title: Landau-gauge condensates from the quark propagator on the lattice

abstract:
  We compute the dimension-2 condensate, <A^2>, and the dimension-4 mixed
condensate, <\bar q A q>, from the recent quenched lattice results for the
quark propagator in the Landau gauge. We fit the lattice data to the Operator
Product Expansion in the "fiducial" region 1.2 GeV < Q < 3 GeV. Our result for
the dynamical gluon mass at the scale of 10 GeV^2 is m_A=600-650 MeV, in
agreement with independent determinations. For the mixed Landau gauge
condensate of dimension-4 we get alpha_s <\bar q g A q> = (-0.11 +/- 0.03)
GeV^4. This value is an order of magnitude larger than the <G^2> gluon
condensate.


title: The QCD S-matrix in the high-energy limit

abstract:
  I discuss elastic dipole-dipole scattering in QCD at high energies, with
emphasis on the relation between Mueller's dipole picture and the Color Glass
Condensate, and on the importance of rare fluctuations for the high-energy
limit of the S-matrix.


title: The Higgs Mechanism and The Vacuum Energy Density Problem

abstract:
  We discuss the vacuum energy density term resulting from the spontaneous
breakdown of the electroweak gauge symmetry, in the Higgs Mechanism. We
alternatively expand the scalar field at one of the degenerate states that lie
outside the circle of minimum, such that the Higgs Potential becomes free of
any constant field term, and describes a true vacuum. We show that this true
vacuum requires a slightly smaller quartic coupling, if the same $v$ and $m_H$
values of the electroweak model are imposed. We propose that this small
difference (exactly 20 percent) can be utilized as a test to distinguish and
identify the true vacuum, in future experiments at LHC. We shortly discuss the
resulting new Higgs Potential, and its cosmological implications.


title: The mass of the nucleon in a chiral quark-diquark model

abstract:
  The mass of the nucleon is studied in a chiral quark-diquark model. Both
scalar and axial-vector diquarks are taken into account for the construction of
the nucleon state. After the hadronization procedure to obtain an effective
meson-baryon Lagrangian, the quark-diquark self-energy is calculated in order
to generate the baryon kinetic term as well as the mass of the nucleon. It
turns out that both the scalar and axial-vector parts of the self-energy are
attractive for the mass of the nucleon. We investigate the range of parameters
that can reproduce the mass of the nucleon.


title: A Mechanism for the Top-Bottom Mass Hierarchy

abstract:
  We discuss a mechanism to generate hierarchy between masses of the top and
bottom quarks without fine-tuning of the Yukawa coupling constants. In the
framework of the two-Higgs-doublet model (THDM) with a discrete $Z_2$ symmetry,
there exists the vacuum where only the top quark receives the mass of the order
of the electroweak symmetry breaking scale $v(\simeq 246 {GeV})$, while the
bottom quark remains massless. We show a model in which a small sofb-breaking
mass $m_3^2 [\sim v^2/(4\pi)^2]$ for the $Z_2$ symmetry is generated by the
dynamics above the cutoff scale of the THDM. The appearance of $m_3^2$ gives
the small mass for the bottom quark, and explain the hierarchy $m_b/m_t \ll 1$.


title: Progress in Anisotropic Plasma Physics

abstract:
  In 1959 Weibel demonstrated that when a QED plasma has a temperature
anisotropy there exist unstable transverse magnetic excitations which grow
exponentially fast. In this paper we will review how to determine the growth
rates for these unstable modes in the weak-coupling and ultrarelativistic
limits in which the collective behavior is describable in terms are so-called
"hard-loops". We will show that in this limit QCD is subject to instabilities
which are analogous to the Weibel instability in QED. The presence of such
instabilities dominates the early time evolution of a highly anisotropic
plasma; however, at longer times it is expected that these instabilities will
saturate (condense). I will discuss how the presence of non-linear interactions
between the gluons complicates the determination of the saturated state. In
order to discuss this I present the generalization of the Braaten-Pisarski
isotropic hard-thermal-loop effective action to a system with a temperature
anisotropy in the parton distribution functions. The resulting hard-loop
effective action can be used to determine the time and energy scales associated
with the possible saturation (condensation) of the gluonic modes. We will also
discuss the effects of anisotropies on observables, in particular on the heavy
quark energy loss.


title: Two-loop corrections to Higgs boson production

abstract:
  In this paper we present the complete two-loop vertex corrections to scalar
and pseudo-scalar Higgs boson production for general colour factors for the
gauge group ${\rm SU(N)}$ in the limit where the top quark mass gets infinite.
We derive a general formula for the vertex correction which holds for conserved
and non conserved operators. For the conserved operator we take the
electromagnetic vertex correction as an example whereas for the non conserved
operators we take the two vertex corrections above. Our observations for the
structure of the pole terms $1/\epsilon^4$, $1/\epsilon^3$ and $1/\epsilon^2$
in two loop order are the same as made earlier in the literature for
electromagnetism. However we also elucidate the origin of the second order
single pole term which is equal to the second order singular part of the
anomalous dimension plus a universal function which is the same for the quark
and the gluon. [3mm]


title:
The inclusion of higher-order QCD corrections into Parton Shower Monte
  Carlos

abstract:
  Substantial progress has been made recently in the formalisms which form the
basis of event generators. I discuss some of the ideas involved, emphasizing
the role of higher-order QCD corrections and their interplay with parton
showers


title: Bottom production

abstract:
  I briefly review the theory and phenomenology of bottom production at
colliders. When all theoretical uncertainties are taken into proper account,
and modern measurements are considered, no significant discrepancy is seen
between data and QCD predictions


title: Naturally Degenerate Right Handed Neutrinos

abstract:
  In the context of supersymmetric theories, a weakly broken gauged SO(3)
flavour symmetry is used to produce two highly degenerate right handed (RH)
neutrinos. It is then shown that this SO(3) flavour symmetry is compatible with
all fermion masses and mixings if it is supplemented with a further SU(3)
flavour symmetry. A specific Susy breaking model is used to generate the light
neutrino masses as well as a natural model of TeV scale resonant leptogenesis.


title: New Solutions to the Strong CP Problem

abstract:
  We exhibit a solution to the strong CP problem in which ultraviolet physics
renders the QCD theta angle physically unobservable. Our models involve new
strong interactions beyond QCD and particles charged under both the new
interactions and ordinary color.


title: Graviton collider effects in one and more large extra dimensions

abstract:
  Astrophysical bounds severely limit the possibility of observing collider
signals of gravity with less than 3 flat extra dimensions. However, small
distortions of the compactified space can lift the masses of the lightest
graviton excitations, evading astrophysical bounds without affecting collider
signals of quantum gravity. Following this procedure we reconsider theories
with one large extra dimension. A slight space warping gives a model which is
safe in the infrared against astrophysical and observational bounds, and which
has the ultraviolet properties of gravity with a single flat extra dimension.
We extend collider studies to the case of one extra dimension, pointing out its
peculiarities. Finally, for a generic number of extra dimensions, we compare
different channels in LHC searches for quantum gravity, introducing an
ultraviolet cutoff as an additional parameter besides the Planck mass.


title: Heavy quark spin selection rule and the properties of the X(3872)

abstract:
  The properties of the resonance X(3872) are discussed under the assumption
that this resonance is dominantly a `molecular' $J^{PC}=1^{++}$ state of
neutral $D$ and $D^*$ mesons. It is argued that in these properties should
dominate the states with the total spin of the charmed quark-antiquark pair
equal to one. As a practical application of this observation the ratio of the
rates of the decays $X \to \pi^0 \chi_{cJ}$ for different $J$ is predicted. It
is also pointed out that the total rate of these decays is likely to be
comparable to that of the observed transitions $X \to \pi^+ \pi^- J\psi$ and $X
\to \pi^+ \pi^- \pi^0 J\psi$. The decays of the X into light hadrons and its
production in hadronic processes are also briefly discussed.


title: Heating (Gapless) Color-Flavor Locked Quark Matter

abstract:
  We explore the phase diagram of neutral quark matter at high baryon density
as a function of the temperature T and the strange quark mass Ms. At T=0, there
is a sharp distinction between the insulating color-flavor locked (CFL) phase,
which occurs where Ms^2/mu < 2 Delta, and the metallic gapless CFL phase, which
occurs at larger Ms^2/mu. Here, mu is the chemical potential for quark number
and Delta is the gap in the CFL phase. We find this distinction blurred at
nonzero T, as the CFL phase undergoes an insulator-to-metal crossover when it
is heated. We present an analytic treatment of this crossover. At higher
temperatures, we map out the phase transition lines at which the gap parameters
Delta_1, Delta_2 and Delta_3 describing ds-pairing, us-pairing and ud-pairing
respectively, go to zero in an NJL model. For small values of Ms^2/mu, we find
that Delta_2 vanishes first, then Delta_1, then Delta_3. We find agreement with
a previous Ginzburg-Landau analysis of the form of these transitions and find
quantitative agreement with results obtained in full QCD at asymptotic density
for ratios of coefficients in the Ginzburg-Landau potential. At larger Ms^2/mu,
we find that Delta_1 vanishes first, then Delta_2, then Delta_3. Hence, we find
a "doubly critical'' point in the (Ms^2/mu,T)-plane at which two lines of
second order phase transitions (Delta_1->0 and Delta_2->0) cross. Because we do
not make any small-Ms approximation, if we choose a relatively strong coupling
leading to large gap parameters, we are able to pursue the analysis of the
phase diagram all the way up to such large values of Ms that there are no
strange quarks present.


title: Thermal Effects on Pure and Hybrid Inflation

abstract:
  This paper discusses models of inflation based on global supersymmetry. It is
shown that there are parameter ranges, consisent with observational
constraints, for which warm inflation occurs and supergravity effects can be
neglected. There is no need for any fine tuning of parameters. The thermal
corrections to the inflaton potential are calculated and found to be
unimportant.


title:
Electroweak phase transition in the standard model with a dimension-six
  Higgs operator at one-loop level

abstract:
  The possibility of a strongly first-order electroweak phase transition by
means of a dimension-six Higgs operator in the Higgs potential of the standard
model is studied at finite temperature at the one-loop level. Exact calculation
of the one-loop effective Higgs potential at finite temperature suggests that
for the Higgs boson with its mass between 115 and 132 GeV the strongly
first-order electroweak phase transition is possible if a dimension-six
operator is present.


title: The gapless 2SC phase

abstract:
  Recent results on the gapless 2SC phase are reviewed. These include: the
thermal stability under the constraint of the local charge neutrality
condition, the properties at zero and nonzero temperatures, and the color
screening properties.


title: Spinor Operator Giving Both Angular Momentum and Parity

abstract:
  In heavy quark effective theory, heavy mesons which contain a heavy quark (or
antiquark) are classified by $s_l^{pi_l}$, i.e., the total angular momentum
$s_l$ and the parity $pi_l$ of the light quark degrees of freedom around a
static heavy quark. In this case, however, one needs to separately estimate the
parity other than the angular momentum of a light quark to describe heavy
mesons.
  A new operator $K$ was proposed some time ago by two of us (T.M. and T.M.).
In this Letter, we show that the quantum number $k$ of this operator is enough
to describe both the total angular momentum of the light quark degrees of
freedom and the parity of a heavy meson, and derive a simple relation between
$k$ and $s_l^{pi_l}$.


title: A unity of QCD evolution dynamics at small $x$ region

abstract:
  The DGLAP, BFKL, modified DGLAP and modified BFKL equations are constructed
in a unified partonic framework. The antishadowing effect in the recombination
process is emphasized, which leads to two different small $x$ behaviors of
gluon distribution. In the meantime, the BFKL equation and modified DGLAP
equation are viewed as the corrections of the initial gluon correlations to the
evolution dynamics at twist-2 and twist-4, respectively. A partonic explanation
of Regge theory for the BFKL dynamics and the relation of the BFKL dynamics
with the helicity configuration of the initial gluons are presented.


title: A geometrizing higher twist effect on nuclear target

abstract:
  The higher twist effects in deep inelastic scattering on the nuclear target
are studied using time ordered perturbation theory. We showed that the
collinear rescattering of the outgoing quark on the extra nucleons via the
contacting gluon-pair is dominant in nuclear size-dependent effects. The
Qiu-Vitev resummation is proved by using the geometric properties of the higher
twist amplitudes. The leading contributions of nuclear-enhanced effect to the
DGLAP evolution equation are resummed in the same framework.


title:
Relaxing the Upper Bound on the Mass of the Lightest Supersymmetric
  Higgs Boson

abstract:
  We present a class of supersymmetric models in which the lightest Higgs-boson
mass can be as large as a few hundred GeV (200 - 300 GeV) while the successful
MSSM prediction for gauge coupling unification is preserved. The theories are
formulated on a 5D warped space truncated by two branes, and a part of the
Higgs sector is localized on the infrared brane. The structure of the Higgs
sector in the four dimensional effective theory below the Kaluza-Klein mass
scale is essentially that of the next-to-minimal supersymmetric standard model
(NMSSM), or related theories. However, large values of the NMSSM couplings at
the weak scale are now possible as these couplings are required to be
perturbative only up to the infrared cutoff scale, which can in general be much
lower than the unification scale. This allows the possibility of generating a
large quartic coupling in the Higgs potential, and thereby significantly
raising the Higgs-boson mass bound. We present two particularly simple models.
In the first model, the quark and lepton fields are localized on the
ultraviolet brane, where the grand unified symmetry is broken. In the second
model, the quark and lepton fields are localized on the infrared brane, and the
unified symmetry is broken both on the ultraviolet and infrared branes. Our
theories potentially allow the possibility of a significant reduction in the
fine-tuning needed for correct electroweak symmetry breaking, although this is
somewhat model dependent.


title: Deconfinement and Chiral Symmetry: Competing Orders

abstract:
  We investigate the interplay between chiral symmetry restoration and
deconfinement both in two color QCD and adjoint QCD. In ordinary QCD we show
how the behavior of the Polyakov loop near chiral phase transition is induced
by the chiral order parameter, while in adjoint two color QCD one has two truly
independent phase transitions. Introducing a finite baryochemical potential we
find that adjoint QCD exhibits tetracritical behavior.


title:
Radiative Corrections to Deep-Inelastic Neutrino--Nucleon Scattering in
  the MSSM

abstract:
  We discuss the radiative corrections to charged and neutral current
deep-inelastic neutrino--nucleon scattering in the minimal supersymmetric
standard model (MSSM). In particular, deviations from the Standard Model
prediction for the ratios of neutral- to charged-current cross sections,
$R^\nu$ and $R^{\bar\nu}$, are studied, and results of a scan over the MSSM
parameter space are presented.


title: Soft data and the hard pomeron

abstract:
  We show that the introduction of an additional, hard, singularity in soft
forward amplitudes enables one to improve considerably the fits using a
simple-pole structure for the soft pomeron.


title: Higher Order Effects in Non Linear Evolution from a Veto in Rapidities

abstract:
  Higher order corrections to the Balitsky-Kovchegov equation have been
estimated by introducing a rapidity veto which forbids subsequent emissions to
be very close in rapidity and is known to mimic higher order corrections to the
linear BFKL equation. The rapidity veto constraint has been first introduced
using analytical arguments obtaining a power growth with energy, Q_s (Y) ~
exp(lambda Y), of the saturation scale of lambda ~ 0.45. Then a numerical
analysis for the non-linear Balitsky-Kovchegov equation has been carried out
for phenomenological rapidities: when a veto of about two units of rapidity is
introduced for a fixed value of the coupling constant of alpha_s = 0.2 the
saturation scale lambda decreases from ~ 0.6 to ~ 0.3, and when running
coupling effects are taken into account it decreases from ~ 0.4 to ~ 0.3.


title: Angular distributions in $J/\psi(\rho,\omega)$ states near threshold

abstract:
  A resonance X(3872), first observed in the decays $B \to K X$, has been seen
to decay to $J/\psi \pi^+ \pi^-$. The $\pi^+ \pi^-$ mass spectrum peaks near
its kinematic upper limit, prompting speculation that the dipion system may be
in a $\rho^0$. The decay $X(3872) \to J/\psi \omega$ also has been observed.
The reaction $\gamma \gamma \to J/\psi \pi^+ \pi^-$ has been studied.
Consequently, angular distributions in decays of $J/\psi (\rho^0,\omega)$
states near threshold are of interest, and results are presented.


title: Split Supersymmetry, stable gluino, and gluinonium

abstract:
  In the scenario recently proposed by Arkani and Dimopoulos, the
supersymmetric scalar particles are all very heavy, at least of the order of
$10^9$ GeV but the gauginos, higgsinos, and one of the neutral Higgs bosons
remain under a TeV. The most distinct signature is the metastable gluino.
However, the detection of metastable gluino depends crucially on the spectrum
of hadrons that it fragments into. Instead, here we propose another unambiguous
signature by forming the gluino-gluino bound state, gluinonium, which will then
annihilate into $t\bar t$ and $b\bar b$ pairs. We study the sensitivity of such
signatures at the LHC.


title: A model of cosmology and particle physics at an intermediate scale

abstract:
  We propose a model of cosmology and particle physics in which all relevant
scales arise in a natural way from an intermediate string scale. We are led to
assign the string scale to the intermediate scale M_* \sim 10^{13} GeV by four
independent pieces of physics: electroweak symmetry breaking; the \mu
parameter; the axion scale; and the neutrino mass scale. The model involves
hybrid inflation with the waterfall field N being responsible for generating
the \mu term, the right-handed neutrino mass scale, and the Peccei-Quinn
symmetry breaking scale. The large scale structure of the Universe is generated
by the lightest right-handed sneutrino playing the role of a coupled curvaton.
We show that the correct curvature perturbations may be successfully generated
providing the lightest right-handed neutrino is weakly coupled in the see-saw
mechanism, consistent with sequential dominance.


title: Can there be any new physics in b -> d penguins

abstract:
  We analyze the possibility of observing new physics effects in the $b \to d$
penguin amplitudes. For this purpose, we consider the decay mode $B \to K^0
\bar K^0 $, which has only $b \to d$ penguin contributions. Using the QCD
factorization approach, we find very tiny CP violating effects in the standard
model for this process. Furthermore, we show that the minimal supersymmetric
standard model with $LR$ mass insertion and R-parity violating supersymmetric
model can provide substantial CP violation effects. Observation of sizable CP
violation in this mode would be a clear signal of new physics.


title: Mini-review on Lepton Flavor and CP Violation in SUSY

abstract:
  Lepton flavor and CP violation in supersymmetric models are briefly reviewed.
After a short motivation and an introduction to the phenomenology, model
independent constraints on mass insertions, predictions of SUSY GUT models and
rates for several LFV and CPV processes are presented.


title: QCD-Factorization of inclusive B decays and |Vub|

abstract:
  Recent progress in the theoretical description of inclusive B to X_u l nu
decays in the shape-function region is reported. Finite moments of the shape
function are related to HQET parameters. Event fractions for several
experimental cuts are presented, with a particular emphasis on the hadronic
variable P+. The aim of this talk is to introduce the P+ spectrum, to compare
it to the hadronic invariant mass spectrum and the charged-lepton energy
spectrum, and to study the prospect of evaluating |Vub| in the presence of a
large background from B to X_c decays.


title: MSSM Higgs Physics: Theoretical Developments

abstract:
  The corrections to the MSSM Higgs boson masses and couplings performed in
this millennium are briefly reviewed. For the lightest MSSM Higgs boson mass,
m_h, we list the current status of the intrinsic uncertainties (due to unknown
higher-order corrections) and the parametric uncertainties (due to the
imperfect experimental knowledge of the input parameters). The need for
high-precision calculations in the MSSM Higgs boson sector is exemplified in a
realistic example.


title:
Sneutrino Production at e+e- Linear Colliders: Addendum to Slepton
  Production

abstract:
  Complementing the preceding study of charged scalar leptons, the sector of
the neutral scalar leptons, sneutrinos, is investigated in a high-precision
analysis for future e+e- linear colliders. The theoretical predictions for the
cross-sections are calculated at the thresholds for non-zero widths and in the
continuum including higher-order corrections at the one-loop level. Methods for
measuring the sneutrino masses and the electron-sneutrino-gaugino Yukawa
couplings are presented, addressing theoretical problems specific for the
sneutrino channels.


title:
SU(3) Clebsch-Gordan Coefficients for Baryon-Meson Coupling at Arbitrary
  N_c

abstract:
  We present explicit formulae for the SU(3) Clebsch-Gordan coefficients that
are relevant for the couplings of large N_c baryons to mesons. In particular,
we compute the Clebsch-Gordan series for the coupling of the octet (associated
with mesons, and remains the correct representation at large N_c) to the large
N_c analogs of the baryon octet and decuplet representations.


title: Fermion production in classical fields

abstract:
  The creation of quark-antiquark pairs by vacuum polarisation in the presence
of classical fields is studied based on their propagators in the background.
Especially the issue of gauge invariance and particularities of particle
production in ultrarelativistic collider experiments are discussed.


title:
Loop Corrections to Heavy-to-Light Form Factors and Evanescent Operators
  in SCET

abstract:
  One-loop matching corrections are calculated for Soft-Collinear Effective
Theory (SCET) operators relevant to the analysis of heavy-to-light meson form
factors at large recoil. The numerical impact of radiative corrections on form
factor predictions is assessed. Evanescent operators in the effective theory
are studied and it is shown that even in problems of the Sudakov type, these
operators can be renormalized to have vanishing matrix elements.


title:
The nucleon's gluonic transverse size: From exclusive J/psi
  photoproduction to high-energy pp collisions

abstract:
  We summarize what is known about the transverse spatial distribution of
gluons in the nucleon and its x-dependence from exclusive J/psi
photo/electroproduction in e-p fixed-target and collider experiments (HERA H1
and ZEUS). This information can be used to predict the impact parameter
dependence of the cross section for certain hard QCD processes (dijet
production) in pbar-p and p-p collisions at the Tevatron and LHC.