title: Perturbative generation of a strange-quark asymmetry in the nucleon

abstract:
  We point out that perturbative evolution in QCD at three loops generates a
strange-antistrange asymmetry s(x)-sbar(x) in the nucleon's sea just from the
fact that the nucleon has non-vanishing up and down quark valence densities.
The recently computed three-loop splitting functions allow for an estimate of
this effect. We find that a fairly sizable asymmetry may be generated. Results
for analogous asymmetries in the heavy-quark sector are also presented.


title: LCG Monte-Carlo Data Base

abstract:
  We present the Monte-Carlo events Data Base (MCDB) project and its
development plans. MCDB facilitates communication between authors of
Monte-Carlo generators and experimental users. It also provides a convenient
book-keeping and an easy access to generator level samples. The first release
of MCDB is now operational for the CMS collaboration. In this paper we review
the main ideas behind MCDB and discuss future plans to develop this Data Base
further within the CERN LCG framework.


title: Exact solution of BFKL equation in jet-physics

abstract:
  It has been recently found that the heavy quark-antiquark QQbar pair
multiplicity, in certain phase space region (QQbar at short distance, soft and
with small velocity), satisfies an evolution equation formally similar to the
BFKL equation for the high energy scattering amplitude. We find the exact
solution of the QQbar-equation and discuss the differences with the BFKL
scattering amplitude.


title:
Measurement of the Generalized Polarizabilities of the Proton in Virtual
  Compton Scattering at Q2= 0.92 and 1.76 GeV2

abstract:
  We report a Virtual Compton Scattering study of the proton at low CM
energies. We have determined the structure functions $P_{LL}-P_{TT}/\epsilon$
and $P_{LT}$, and the electric and magnetic Generalized Polarizabilities (GPs)
$\alpha_E(Q2)$ and $\beta_M(Q2)$ at momentum transfer Q2= 0.92 and 1.76 GeV2.
The electric GP shows a strong fall-off with Q2, and its global behavior does
not follow a simple dipole form. The magnetic GP shows a rise and then a
fall-off; this can be interpreted as the dominance of a long-distance
diamagnetic pion cloud at low Q2, compensated at higher Q2 by a paramagnetic
contribution from $\pi N$ intermediate states.


title: CJK-Improved 5 Flavour LO Parton Distributions in the Real Photon

abstract:
  Radiatively generated, LO quark (u,d,s,c,b) and gluon densities in the real,
unpolarized photon, improved in respect to our previous paper, are presented.
We perform three global fits to the F_2^gamma data, using the LO DGLAP
evolution equation. We improve the treatment of the strong coupling running and
used lower values of Lambda_QCD, as we have found that the too high values
adopted in the previous work caused the high chi^2 of the fits. In addition to
the modified FFNS_CJKL model, referred to as FFNS_CJK 1 we analyse a FFNS_CJK 2
model in which we take into account the resolved-photon heavy-quark
contribution. New CJK model with an improved high-x behavior of the
F_2^gamma(x,Q^2) is proposed. Finally, in the case of the CJK model we abandon
the valence sum rule imposed on the VMD input densities. New fits give chi^2
per degree of freedom about 0.25 better than the old results. All features of
the CJKL model, such as the realistic heavy-quark distributions, good
description of the LEP data on the Q^2 dependence of the F_2^gamma and on
F_2,c^gamma are preserved. Moreover we present results of an analysis of the
uncertainties of the CJK parton distributions due to the experimental errors.
It is based on the Hessian method used for the proton and very recently applied
for the photon by one of us. Parton and structure function parametrizations of
the best fits in both FFNS_CJK and CJK approaches are made accessible. For the
CJK model we provide also sets of test parametrizations which allow for
calculation of uncertainties of any physical value depending on the real photon
parton densities.


title: Vector meson pair production in two-photon collisions near threshold

abstract:
  The cross sections for several $\gamma \gamma \to VV$ processes exhibit
strong enhancements near threshold, where $V$ denotes a vector meson. The
pattern of these enhancements is not well understood; for example, $\gamma
\gamma \to \rho^0 \rho^0$ shows an appreciable peak, while $\gamma \gamma \to
\rho^+ \rho^-$ does not. Some possible mechanisms for this behavior are
discussed. Tests are proposed involving production of systems containing
heavier quarks, e.g., through the reaction $\gamma \gamma \to J/\psi \rho^0$.
The importance of modeling $\ell^+ \ell^- \pi^+ \pi^-$ angular distributions in
decays of threshold $J/\psi \rho^0$ enhancements is illustrated by comparing
the expected distributions for S-wave decays of scalar particles and P-wave
decays of pseudoscalar particles.


title:
Finite temperature quantum correlations in $SU(2)_c$ quark states and
  quantum spin models

abstract:
  The entanglement at finite temperatures are analyzed by using thermal models
for colored quarks making up the hadron physical states. We have found that
these quantum correlations entirely vanish at $T_c\geq m_q/\ln(1.5)$. For
temperatures larger than $T_c$ the correlations are classical. Also we worked
out the entanglement for the transverse Ising spin chain. In dependence on both
temperature $T$ and transverse field $\lambda$ we can identify a certain
region, where the quantum effects are likely to dominate the system. We suggest
the mutual information as a quantitative measure for the correlations in ground
state.


title: Collective polarization exchanges in collisions of photon clouds

abstract:
  The one-loop "vacuum" Heisenberg-Euler coupling of four electromagnetic
fields can lead to interesting collective effects in the collision of two
photon clouds, on a time scale orders of magnitude faster than one estimates
from the cross-section and density. We estimate the characteristic time for
macroscopic transformation of positive to negative helicity in clouds that are
initially totally polarized and for depolarization of a polarized beam
traversing an unpolarized cloud.


title: ee^+-->\pi^0\gamma and form factor of \pi^0\gamma^*\gamma^*

abstract:
  The form factor \pi^0\gamma^*\gamma^* is obtained to the next leading order
of derivative expansion of the chiral anomaly and the VMD. As a test the form
factor has been used to calculate the cross section of ee^+-->\pi^0\gamma.
Theory agrees with data.


title: Two-loop QCD corrections to top quark decay

abstract:
  We present a determination of a new class of Feynman diagrams relevant for
second-order QCD corrections to the top quark decay t -> b W. Modern computing
techniques allow us to perform a reduction of the original loop integrals to
master integrals. We obtain the analytical value of the top decay rate as an
expansion around the limit of massless b and W.


title:
Exclusive rare B -> K*e+e- decays at low recoil: controlling the
  long-distance effects

abstract:
  We present a model-independent description of the exclusive rare decays B->
K* e+e- in the low recoil region (large lepton invariant mass q^2 ~ m_b^2). In
this region the long-distance effects from quark loops can be computed with the
help of an operator product expansion in 1/Q, with Q={m_b, \sqrt{q^2}}.
Nonperturbative effects up to and including terms suppressed by Lambda/Q and
mc^2/mb^2 relative to the short-distance amplitude can be included in a
model-independent way. Based on these results, we propose an improved method
for determining the CKM matrix element |V{ub}| from a combination of rare and
semileptonic B and D decays near the zero recoil point. The residual
theoretical uncertainty from long distance effects in this |V{ub}|
determination comes from terms in the OPE of order alpha_s(Q)\Lambda/mb,
alpha_s^2(Q), mc^4/mb^4$ and duality violations and is estimated to be below
10%.


title: Running into New Territory in SUSY Parameter Space

abstract:
  The LEP-II bound on the light Higgs mass rules out the vast majority of
parameter space left to the Minimal Supersymmetric Standard Model (MSSM) with
weak-scale soft-masses. This suggests the importance of exploring extensions of
the MSSM with non-minimal Higgs physics. In this article, we explore a theory
with an additional singlet superfield and an extended gauge sector. The theory
has a number of novel features compared to both the MSSM and Next-to-MSSM,
including easily realizing a light CP-even Higgs mass consistent with LEP-II
limits, tan(beta) < 1, and a lightest Higgs which is charged. These features
are achieved while remaining consistent with perturbative unification and
without large stop-masses. Discovery modes at the Tevatron and LHC are
discussed.


title: Ferromagnetism in quark matter

abstract:
  We investigate the magnetic property of the cold quark matter employing the
magnetic moment $\vec{\mu}'$ as the order parameter. Through analysis of the
effective potential $V (\vec{\mu}^{' 2})$, we find that, at relatively high
densities $\rho > \rho_c$, the quark matter is in the normal phase. At $\rho =
\rho_c$, the magnetic phase transition takes place and, in the low-density
region $\rho < \rho_c$, the quark matter is in the ferromagnetic phase. For up,
down and strange quarks, $\rho_c = 1.62 \rho_0$, $1.47 \rho_0$ and $2.20
\rho_0$ ($\rho_0$ the nuclear density), respectively. We also find that the
leptons ($e$ and $\mu$) inside the quark matter are in the normal phase.


title: Curvaton Scenario with Affleck-Dine Baryogenesis

abstract:
  We discuss the curvaton scenario with the Affleck-Dine baryogenesis. In this
scenario, non-vanishing baryonic entropy fluctuation may be generated even
without primordial fluctuation of the Affleck-Dine field. Too large entropy
fluctuation is inconsistent with the observations and hence constraints on the
curvaton scenario with the Affleck-Dine baryogenesis are obtained. We calculate
the baryonic entropy fluctuation (as well as other cosmological density
fluctuations) in this case and derive constraints. Implications to some of the
models of the curvaton are also discussed.


title:
Towards a Nonperturbative Foundation of the Dipole Picture: I.
  Functional Methods

abstract:
  This is the first of two papers in which we study real and virtual
photon-proton scattering in a nonperturbative framework. We classify different
contributions to this process and identify the leading contributions at high
energies. We then study the renormalisation of the photon-quark-antiquark
vertex that occurs in the leading contributions. We find something like the
dipole picture in one of these contributions but also find two correction terms
which can potentially become large at small photon virtualities. In the second
paper we will discuss the additional approximations and assumptions that are
necessary to obtain the dipole model of high energy scattering from the results
found here.


title: Off mass shell dual amplitude with Mandelstam analyticity

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


title:
Simulation of the radio signal from ultrahigh energy neutrino-initiated
  showers

abstract:
  PeV neutrinos produce particle showers when they interact with the atomic
nuclei in ice. We briefly describe characteristics of these showers and the
radio Cherenkov signal produced by the showers. We study pulses from
electromagnetic (em), hadronic, and combined em-hadronic showers and propose
extrapolations to EeV energies.


title: Constraining low scale gravity with ultrahigh energy neutrinos

abstract:
  We show that LSG model predictions of event ratios are clearly distinguished
from those of the SM. This is true in all models of ultrahigh energy (UHE)
neutrino sources, in both $\nu_e:\nu_{\mu}:\nu_{\tau} = 1:1:1$ and
$\nu_e:\nu_{\mu}:\nu_{\tau} = 1:2:0$ scenarios for the flux incident on earth.
In particular the ratios of upward $\mu$ events to upward shower events and the
ratios of up events to down events are different by a factor of 2 to an order
of magnitude in the comparisons between SM and LSG. $\nu_{\tau}$ rates are low
but show high sensitivity to SM vs LSG interaction physics.


title: Automatic Integral Reduction for Higher Order Perturbative Calculations

abstract:
  We present a program for the reduction of large systems of integrals to
master integrals. The algorithm was first proposed by Laporta; in this paper,
we implement it in MAPLE. We also develop two new features which keep the size
of intermediate expressions relatively small throughout the calculation. The
program requires modest input information from the user and can be used for
generic calculations in perturbation theory.


title: Baryon Decuplet Masses From the Viewpoint of q-Equidistance

abstract:
  Masses of baryons {3/2}^+ are calculated on the base of representations of
dynamical "pseudounitary" q-deformed algebra u(4,1)_q which provides necessary
breaking of the 4-flavor symmetry realized by the assumed q-algebra su(4)_q. It
is demonstrated that, contrary to the case of su(3)_q octet baryons {1/2}^+,
one and the same q-analog of mass relation for baryons {3/2}^+ from decuplet
embedded into 20-plet of su(4)_q follows from evaluations within all the
different admissible "dynamical" representations.


title: Probing the Planck Scale with Proton Decay

abstract:
  We advocate the idea that proton decay may probe physics at the Planck scale
instead of the GUT scale. This is possible because supersymmetric theories have
dimension-5 operators that can induce proton decay at dangerous rates, even
with R-parity conservation. These operators are expected to be suppressed by
the same physics that explains the fermion masses and mixings. We present a
thorough analysis of nucleon partial lifetimes in models with a string-inspired
anomalous U(1)_X family symmetry which is responsible for the fermionic mass
spectrum as well as forbidding R-parity violating interactions. Protons and
neutrons can decay via R-parity conserving non-renormalizable superpotential
terms that are suppressed by the Planck scale and powers of the Cabibbo angle.
Many of the models naturally lead to nucleon decay near present limits without
any reference to grand unification.


title:
Constraining R-parity violating couplings using dimuon data at Tevatron
  Run-II

abstract:
  The dimuon plus dijet signal is analyzed in the top squark pair production at
Tevatron Run-II experiment and the total event rate is compared with the
existing dimuon data. This comparison rules out top squark mass upto 188(104)
GeV for the branching fraction 100%(50%) of top squark decay into the muon plus
quark via lepton number violating coupling. Interpretation of this limit in the
framework of R-parity violating(RPV) SUSY model puts limit on relevant RPV
coupling for a given top squark mass and other supersymmetric model parameters.
If $\MST \lsim 180$ GeV we found that the RPV couplings are roughly restricted
to be within $\sim 10^{-4}$ which is at the same ballpark value obtained from
the neutrino data. The limits are very stringent for a scenario where top
squarks appear to be the next lightest supersymmetric particles.


title: Isospin Mixing of Narrow Pentaquark States

abstract:
  Interpreting the recently discovered narrow exotic baryons as pentaquark
states, we discuss, along an old argument of ours, the isospin mixing occurring
within the two doublets of $Q = -1$ and Q=0 states lying inside the $S=-2$
($\Xi$-cascade) sector. We argue that, at least within the Jaffe-Wilczek
assignment, presently available data already indicate that mixing should occur
at an observable level in both charge sectors, with mixing angles that can be
predicted in terms of ratios of observable mass splittings.


title: Phenomenology of quintessino dark matter -- Production of NLSP particles

abstract:
  In the model of quintessino as dark matter particle, the dark matter and dark
energy are unified in one superfield, where the dynamics of the Quintessence
drives the Universe acceleration and its superpartner, quintessino, makes up
the dark matter of the Universe. This scenario predicts the existence of long
lived $\tilde{\tau}$ as the next lightest supersymmetric particle. In this
paper we study the possibility of detecting $\tilde{\tau}$ produced by the high
energy cosmic neutrinos interacting with the earth matter. By a detailed
calculation we find that the event rate is one to several hundred per year at a
detector with effective area of $1 km^2$. The study in this paper can be also
applied for models of gravitino or axino dark matter particles.


title: Precision electroweak tests with $\bar \nu_e e$ scattering

abstract:
  Measurements of the cross section for $\bar \nu_e e^-$ elastic scattering
with unprecedented precision have recently been proposed. The impact of these
experiments for detecting possible deviations from the standard electroweak
theory is analyzed and compared with that of several other measurements.


title: Nonperturbative and analytical approach to Yang-Mills thermodynamics

abstract:
  An analytical, macroscopic approach to SU(N) Yang-Mills thermodynamics is
developed, tested,and applied.


title: Yukawa Quasi-Unification and Inflation

abstract:
  We review the construction of a concrete supersymmetric grand unified model,
which naturally leads to a moderate violation of "asymptotic" Yukawa
unification and, thus, can allow an acceptable b-quark mass within the
constrained minimal supersymmetric standard model with mu>0. The model
possesses a wide and natural range of parameters which is consistent with the
data on the cold dark matter abundance in the universe, b-->s gamma, the muon
anomalous magnetic moment and the Higgs boson masses. Also, it automatically
leads to a new version of shifted hybrid inflation, which avoids overproduction
of monopoles at the end of inflation by using only renormalizable terms.


title: Spin-Dependent Structure Function g_1 at Small x

abstract:
  Accounting for double-logarithms of x and running QCD coupling leads to
expressions for both the non-singlet and singlet components of $g_1$. These
expressions manifest the Regge asymptotics when x ->0 and differ considerably
from the DGLAP expressions at small values of x.


title: Is there maximal mixing in the lepton sector?

abstract:
  We discuss the potential of long-baseline neutrino oscillation experiments to
determine deviations from maximal \nu_\mu-\nu_\tau mixing. We compare the
obtainable sensitivities to predictions from neutrino mass models and to the
size of quantum corrections. We find that the theoretical expectations for
deviations are typically well within experimental reach.


title:
Seed perturbations for primordial magnetic fields from MSSM flat
  directions

abstract:
  We demonstrate that the MSSM flat directions can naturally account for the
seed magnetic fields in the early Universe. The non-zero vacuum expectation
value of an MSSM flat direction condensate provides masses to the gauge fields
and thereby breaks conformal invariance. During inflation the condensate
receives spatial perturbations and $SU(2) x U(1)_Y$ gauge currents are
generated together with (hyper)magnetic fields. When these long wavelength
vector perturbations reenter our horizon they give rise to $U(1)_{em}$ magnetic
fields with an amplitude of $10^{-30}$ Gauss, as required by the dynamo
mechanism.


title:
Glueballs, Hybrids, Pentaquarks : Introduction to Hadron Spectroscopy
  and Review of Selected Topics

abstract:
  Hadron spectroscopy has received revitalised interest due to the discovery of
states with unexpected properties. Discussed are the recent findings at BABAR,
CLEO, BELLE and BES. A detailed report is given on the many experiments
reporting evidence (or counter--evidence) for the $\Theta^+(1540)$ and other
pentaquarks. In conventional meson and in baryon spectroscopy, evidence is
emerging that one--gluon--exchange does not provide the appropiate means to
understand low--energy QCD; instanton--induced interactions yield much more
insight. In particular the rich spectrum of baryon resonances is very well
suited to test dynamical quark models using constituent quarks, a confinement
potential plus some residual interactions. A still controversial issue is the
question if glueballs and hybrids exist. There is the possibility that two
$q\bar q$ scalar states and a glueball form three observed resonances by
mixing. However, there is also rather conclusive evidence against this
interpretation. Mesons with exotic quantum numbers have been reported but there
is no reason why they should be hybrids: a four--quark interpretation is
enforced for the $\pi_1(1400)$ and not ruled out in the other cases.


title: Lorentz Violation in Supersymmetric Field Theories

abstract:
  We construct supersymmetric Lorentz violating operators for matter and gauge
fields. We show that in the supersymmetric Standard Model the lowest possible
dimension for such operators is five, and therefore they are suppressed by at
least one power of an ultra--violet energy scale, providing a possible
explanation for the smallness of Lorentz violation and its stability against
radiative corrections. Supersymmetric Lorentz noninvariant operators do not
lead to modifications of dispersion relations at high energies thereby escaping
constraints from astrophysical searches for Lorentz violation.


title: Bounds on Relic Neutrino Masses in the Z-burst Model

abstract:
  Neutrinos from far-away sources annihilating at the Z resonance on relic
neutrinos may give origin to the extreme-energy cosmic rays (EECR). If
``Z-bursts'' are responsible for the EECR events, then we show that the
non-observation of cosmic ray events at energies above 2 x 10^20 eV by the
AGASA Collaboration implies a lower bound around 0.3 eV on the relic neutrino
mass. Since this mass exceeds the mass-squared differences inferred from
oscillation physics, the bound in fact applies to all three neutrino masses.
Together with the upper bound provided by comparisons of the CMB anisotropy
with large-scale structure, this bound leaves only a small interval for
neutrino masses around 0.3 eV, if Z-bursts are to explain the existing EECR
events.


title: Hyperon Radiative Decays in the 1/N_c Expansion

abstract:
  Using a recent calculation of transition magnetic moments in the 1/N_c
expansion and a calculation showing the suppression of E2/M1 by powers of N_c,
we compute the widths for the radiative decays Sigma^* --> Sigma gamma, Sigma^*
--> Lambda gamma, and Xi^* --> Xi gamma.


title:
Reactor Searches for Neutrino Magnetic Moment as a Probe of Extra
  Dimensions

abstract:
  We present calculations of the magnetic moment contribution to neutrino
electron scattering in large extra dimension brane-bulk models (LED) with three
bulk neutrinos. We discuss the cases with two and three large extra dimensions
of sizes $R$. The calculations are done using reactor flux from Uranium,
$^{235}U$ as the neutrino source. We find that if the electron neutrino mass is
chosen to be in the range of one eV, the differential cross section for
$\bar{\nu}-e$ scattering for low electron recoil energy can be of the same
order as the presently explored values in reactor experiments. Furthermore the
spectral shape for the LED models is different from the four dimensional case.
Future higher precision reactor experiments can therefore be used to provide
new constraints on a class of large extra dimension theories.


title:
Effective Lagrangian for $\chi^+_i\chi_j^0H^-$ Interaction in the MSSM
  and Charged Higgs Decays

abstract:
  We extend previous analyses of the supersymmetric loop correction to the
charged Higgs couplings to include the coupling $H^{\pm}\chi^{\mp}\chi^0$. The
analysis completes the previous analyses where similar corrections were
computed for $H^+\bar t b$ ($H^-t\bar b$), and for $H^+\tau^- \bar\nu_{\tau}$
($H^- \tau^+ \nu_{\tau}$) couplings within the minimal supersymmetric standard
model. The effective one loop Lagrangian is then applied to the computation of
the charged Higgs decays. The sizes of the supersymmetric loop correction on
branching ratios of the charged Higgs $H^+(H^-)$ into the decay modes $t\bar b$
($\bar t b$), $\bar\tau\nu_{\tau}$ ($\tau \bar \nu_{\tau}$), and
$\chi_i^+\chi_j^0(\chi_i^-\chi_j^0)$ (i=1,2; j=1-4) are investigated and the
supersymmetric loop correction is found to be significant, i.e., in the range
20-30% in significant regions of the parameter space. The loop correction to
the decay mode $\chi_1^{\pm}\chi_2^0$ is examined in specific detail as this
decay mode leads to a trileptonic signal. The effects of CP phases on the
branching ratio are also investigated. A brief discussion of the implications
of the analysis for collders is given.


title:
Counting and Tensorial Properties of Twist-Two Helicity-Flip Nucleon
  Form Factors

abstract:
  We perform a systematic analysis on the off-forward matrix elements of the
twist-two quark and gluon helicity-flip operators. By matching the allowed
quantum numbers and their crossing channel counterparts (a method developed by
Ji & Lebed), we systematically count the number of independent nucleon form
factors in off-forward scattering of matrix elements of these quark and gluon
spin-flip operators. In particular, we find that the numbers of independent
nucleon form factors twist-2, helicity flip quark (gluon) operators are $2n-1$
($2n-5$) if $n$ is odd, and $2n-2$ ($2n-6$) if $n$ is even, with $n\ge2$ ($n\ge
4$). We also analysis and write down the tensorial/Lorentz structure and
kinematic factors of the expansion of these operators' matrix elements in terms
of the independent form factors. These generalized form factors define the
off-forward quark and gluon helicity-flip distributions in the literature.


title: The Universality of Seesaws

abstract:
  I discuss how the ideas associated with Seesaws, first introduced in the
context of neutrino masses, are generally useful for understanding the very
disparate scales one encounters in particle physics. From this point of view,
the energy scale characterizing the Universe's dark energy presents a real
challenge. A natural Seesaw explanation for this scale ensues if one imagines
tying the dark energy sector to the neutrino sector, but this idea requires
bold new dynamics.


title: D-term Instability in Flat Directions and its Cosmological Implication

abstract:
  We study dynamics of flat directions in the minimal supersymmetric standard
model taking account of its constituent fields. It is found that there exist
new instabilities due to the D-term potential and the nature of these
instabilities depends on the eccentricity of the orbit. For a roughly circular
orbit, it is similar to narrow-band resonance described by the Mathieu
equation. For an elliptic orbit, the instabilities exhibit tachyonic nature. In
the narrow-band regime, we show that the existence of the instabilities is
crucial to the formation of $Q$-balls. The $Q$-ball formation proceeds through
quasi-stable state called ``$I$-ball''. The transition from $I$-balls to
$Q$-balls is made efficient by the $D$-term instability and during this process
some fraction of the charge of the $Q$-ball is emitted. This discovery may
revive the scenario which relates the baryon number and dark matter density of
the universe. Furthermore, the tachyonic $D$-term instability causes the
drastic decay of the flat direction moving in an orbit with relatively large
eccentricity. Thus the evolution of flat directions is completely altered by
the appearance of this instability.


title:
Uncertainty of polarized gluon distribution from prompt photon
  production

abstract:
  Constraint of prompt photon data on the polarized gluon distribution is
discussed in terms of uncertainty estimation for polarized parton distribution
functions (PDFs). By comparing between uncertainty of the double spin asymmetry
A_{LL}^\gamma and expected statistical errors at RHIC, we found that the gluon
distribution is effectively constrained in the region 0.04<x_{_T}<0.2 with the
data at transverse momentum p_{_T}=10-20 GeV for center-of-mass energies
\sqrt{s}=200 and 500 GeV.


title:
Semileptonic decays of doubly heavy baryons in the relativistic quark
  model

abstract:
  Semileptonic decays of doubly heavy baryons are studied in the framework of
the relativistic quark model. The doubly heavy baryons are treated in the
quark-diquark approximation. The transition amplitudes of heavy diquarks bb and
bc going respectively to bc and cc are explicitly expressed through the overlap
integrals of the diquark wave functions in the whole accessible kinematic
range. The relativistic baryon wave functions of the quark-diquark bound system
are used for the calculation of the transition matrix elements, the Isgur-Wise
function and decay rates in the heavy quark limit.


title: Finite width effects in the model of unstable particles with random mass

abstract:
  A phenomenological model of unstable particles based on uncertainty principle
is discussed in quantum field approach. We show that the simplest quantum field
description of mass uncertainty makes it possible to account finite width
effects for particles with large decay widths.


title: SFITTER: SUSY Parameter Analysis at LHC and LC

abstract:
  SFITTER is a new analysis tool to determine supersymmetric model parameters
from collider measurements. Using the set of supersymmetric mass measurements
at the LC and at the LHC we show how both colliders probe different sectors of
the MSSM Lagrangian. This observation is a strong motivation to move from a
parameter fit assuming a certain model to the unconstrained weak-scale MSSM
Lagrangian. We argue how the technical challenges can be dealt with in a
combined fit/grid approach with full correlations.


title: Top Quark Spin Polarization in ep Collision

abstract:
  We discuss the degree of spin polarization of single top quarks produced via
$Wg$ fusion process in $ep$ collision at TESLA+HERAp and CLIC+LHC energies
$\sqrt{s}=1.6$ and 5.3 TeV. For $eb \to t \bar{\nu}$ subprocess we show that
the top quark spin is completely polarized when the spin basis is chosen in the
direction of the incoming positron beam in the rest frame of top quark. A
description on how to combine the cross sections of $e^{+}b\to t\bar{\nu}$ and
$e^{+}g\to t\bar{b}\bar{\nu}$ processes is given. $e^{+}$-beam direction is
taken to be the favorite top quark spin decomposition axis in its rest frame
and it is found to be comparable with the ones in $pp$ collision. It is argued
that theoretical simplicity and experimental clearness are the advantage of
$ep$ collision.


title: The Kinetic Equation for Electroweak Baryogenesis

abstract:
  We derive the kinetic equation for fermions and antifermions interacting with
a planar Higgs bubble wall during the electroweak phase transition using the
`evenisation' procedure. Equations of motion in a relativistic quantum theory
do not mirror classical relations unless one uses evenised operators. We give a
brief introduction to evenisation and then use the evenised Heisenberg
equations of motion to obtain the velocity and force for the particles in the
presence of the Higgs bubble wall. Keeping quantum contributions to $O(\hbar)$
in the equations of motion we obtain the semi-classical force obtained earlier
by other techniques.


title: Two-Hadron-Irreducible QCD Sum Rule for Pentaquark Baryon

abstract:
  We point out that naive pentaquark correlations function include
two-hadron-reducible contributions, which are given by convolution of baryon
and meson correlation functions and have nothing to do with pentaquark. We show
that the two-hadron-reducible contributions are large in the operator product
expansion of the correlation functions of three existing works on the
pentaquark. Therefore, it is dangerous to draw a conclusion from the sum rules
using naive pentaquark correlation functions with naive ansatz for the spectral
function under the dispersion integral. Instead, we propose to use the
two-hadron-irreducible correlation function, which is obtained by subtracting
the two-hadron-reducible contribution from the naive correlation function.
Taking one of the works as an example we demonstrate how drastically the
results can change if we remove the two-hadron-reducible part from the naive
correlation function. We obtain the result opposite to the original work for
the parity of the pentaquark.


title:
Partial wave treatment of Supersymmetric Dark Matter in the presence of
  CP - violation

abstract:
  We present an improved partial wave analysis of the dominant LSP annihilation
channel to a fermion-antifermion pair which avoids the non-relativistic
expansion being therefore applicable near thresholds and poles. The method we
develop allows of contributions of any partial wave in the total angular
momentum J in contrast to partial wave analyses in terms of the orbital angular
momentum L of the initial state, which is usually truncated to p-waves, and
yields very accurate results. The method is formulated in such a way as to
allow easy handling of CP-violating phases residing in supersymmetric
parameters. We apply this refined partial wave technique in order to calculate
the neutralino relic density in the constrained MSSM (CMSSM) in the presence of
CP-violating terms occurring in the Higgs - mixing parameter \mu and trilinear
A coupling for large tanb. The inclusion of CP-violating phases in mu and A
does not upset significantly the picture and the annihilation of the LSP's to a
b b_bar, through Higgs exchange, is still the dominant mechanism in obtaining
cosmologically acceptable neutralino relic densities in regions far from the
stau-coannihilation and the `focus point'. Significant changes can occur if we
allow for phases in the gaugino masses and in particular the gluino mass.


title:
The Evolution of Hadron Spectra in the Modified Leading Logarithm
  Approximation

abstract:
  We perform fits of $\Lambda_{\rm QCD}$ and the gluon fragmentation function
$D(x,Q)$ at initial scale $Q_0 \gg\Lambda_{\rm QCD}$ to charged light hadron
momentum spectra data by evolving in the Modified Leading Logarithm
Approximation. Without additional assumptions, we achieve a good description of
the available data for $\xi=\ln(1/x)$ up to and around the Gaussian peak, and
values of $\Lambda_{\rm QCD}$ acceptably close to those in the literature. In
particular, we find that this procedure describes the position of the peak,
and, in contrast to the Limiting Spectrum, also the normalization.


title: Layered Higgs Phase as a Possible Field Localisation on a Brane

abstract:
  So far it has been found by using lattice techniques that in the anisotropic
five--dimensional Abelian Higgs model, a layered Higgs phase exists in addition
to the expected five--dimensional one. The exploration of the phase diagram has
shown that the two Higgs phases are separated by a phase transition from the
confining phase. This transition is known to be first order. In this paper we
explore the possibility of finding a second order transition point in the
critical line which separates the first order phase transition from the
crossover region. This is shown to be the case only for the four--dimensional
Higgs layered phase whilst the phase transition to the five--dimensional broken
phase remains first order. The layered phase serves as the possible realisation
of four--dimensional spacetime dynamics which is embedded in a
five--dimensional spacetime. These results are due to gauge and scalar field
localisation by confining interactions along the extra fifth direction.


title:
Planck-Scale Effects on Global Symmetries: Cosmology of Pseudo-Goldstone
  Bosons

abstract:
  We consider a model with a small explicit breaking of a global symmetry, as
suggested by gravitational arguments. Our model has one scalar field
transforming under a non-anomalous U(1) symmetry, and coupled lo matter and to
gauge bosons. The spontaneous breaking of the explicitly broken symmetry gives
rise to a massive pseudo-Goldstone boson. We analyze thermal and non-thermal
production of this particle in the early universe, and perform a systematic
study of astrophysical and cosmological constraints on its properties. We find
that for very suppressed explicit breaking the pseudo-Goldstone boson is a cold
dark matter candidate.


title: New phases in CFL quark matter

abstract:
  We consider order $\alpha_s$ corrections to the squared masses of the
pseudo-Goldstone excitations about the ground state of dense quark matter. We
show that these contributions tend to destabilize the vacuum, leading to a
surprisingly complex phase structure for quark matter as a function of quark
mass, even for small $\alpha_s$. In particular we find two new phases of CFL
quark matter possibly relevant for the real world, for which the QCD angle
theta-bar equals pi/2.


title: Low Energy Tests of the Weak Interaction

abstract:
  The study of low energy weak interactions of light quarks and leptons
continues to provide important insights into both the Standard Model as well as
the physics that may lie beyond it. We review the status and future prospects
for low energy electroweak physics. Recent important experimental and
theoretical developments are discussed and open theoretical issues are
highlighted. Particular attention is paid to neutrino physics, searches for
permanent electric dipole moments, neutral current tests of the running of the
weak mixing angle, weak decays, and muon physics. We argue that the broad range
of such studies provides an important complement to high energy collider
searches for physics beyond the Standard Model. The use of low energy weak
interactions to probe novel aspects of hadron structure is also discussed.


title: Dihadron fragmentation functions and high Pt hadron-hadron correlations

abstract:
  We propose the formulation of a dihadron fragmentation function in terms of
parton matrix elements. Under the collinear factorization approximation and
facilitated by the cut-vertex technique, the two hadron inclusive cross section
at leading order (LO) in e+ e- annihilation is shown to factorize into a short
distance parton cross section and the long distance dihadron fragmentation
function. We also derive the DGLAP evolution equation of this function at
leading log. The evolution equation for the non-singlet quark fragmentation
function is solved numerically with a simple ansatz for the initial condition
and results are presented for cases of physical interest.


title: Two-Loop g -> gg Splitting Amplitudes in QCD

abstract:
  Splitting amplitudes are universal functions governing the collinear behavior
of scattering amplitudes for massless particles. We compute the two-loop g ->
gg splitting amplitudes in QCD, N=1, and N=4 super-Yang-Mills theories, which
describe the limits of two-loop n-point amplitudes where two gluon momenta
become parallel. They also represent an ingredient in a direct x-space
computation of DGLAP evolution kernels at next-to-next-to-leading order. To
obtain the splitting amplitudes, we use the unitarity sewing method. In
contrast to the usual light-cone gauge treatment, our calculation does not rely
on the principal-value or Mandelstam-Leibbrandt prescriptions, even though the
loop integrals contain some of the denominators typically encountered in
light-cone gauge. We reduce the integrals to a set of 13 master integrals using
integration-by-parts and Lorentz invariance identities. The master integrals
are computed with the aid of differential equations in the splitting momentum
fraction z. The epsilon-poles of the splitting amplitudes are consistent with a
formula due to Catani for the infrared singularities of two-loop scattering
amplitudes. This consistency essentially provides an inductive proof of
Catani's formula, as well as an ansatz for previously-unknown 1/epsilon pole
terms having non-trivial color structure. Finite terms in the splitting
amplitudes determine the collinear behavior of finite remainders in this
formula.


title:
Determination of the a0-a2 pion scattering length from K->pi+ pi0 pi0
  decay

abstract:
  We present a new method for the determination of the pion-pion scattering
lenght combination a0-a2, based on the study of the pi0-pi0 spectrum in K->pi+
pi0 pi0 in the vicinity of the pi+ pi- threshold. The method requires a minimum
of theoretical input, and is potentially very accurate.


title:
Why the Theta+ is seen in some experiments and not in others - a
  possible explanation

abstract:
  The contradiction between evidence for and against the existence of the
Theta+ pentaquark might be resolved if it only appears as a result of a
particular production mechanism which is present in some experiments and absent
in others. We examine the implications of Theta+ production via decay of a
cryptoexotic N* resonance with a mass of about 2.4 GeV corresponding to a peak
in the experimental data for the invariant mass of the (Theta+,K-) system.
Further experimental checks are suggested.


title: Vibration-Rotational Dynamics of Low-Mass Exotic Baryons

abstract:
  A Goldstone boson with a mass of 35 MeV is derived from the dibaryon masses
found in the experimental data of B. Tatischeff et al. The existence of
quantized vibrations is utilized to explain narrow width nucleon resonances
below the pion-nucleon threshold. The quantum of 35 MeV is found between
nucleon states with like spins and parities. Evidence of the 35 MeV quantum is
in agreement with the mass operator method of the Fil'kov model for low-mass
baryons and with the "light" pion concept of the Walcher particle-hole model.
Azimov's idea of a low-lying baryon octet is revived with evidence from earlier
experiments. The idea of rotational excitations is applied to the band
structure of low-mass baryons in this paper.


title: Coulomb scattering of quantum dipoles in QED

abstract:
  We calculate the total scattering cross-section of a dynamical quantum
electrically neutral dipole in QED of the infinitely heavy charge and of the
infinitely heavy dipole in the leading order in electromagnetic coupling
constant.


title: New plots and parameter degeneracies in neutrino oscillations

abstract:
  It is shown that eightfold degeneracy in neutrino oscillations is easily seen
by plotting constant probabilities in the $(\sin^22\theta_{13}, 1/s^2_{23})$
plane. Using this plot, we discuss how an additional long baseline measurement
resolves degeneracies after the JPARC experiment measures the oscillation
probabilities $P(\nu_\mu\to\nu_e)$ and $P(\bar{\nu}_\mu\to\bar{\nu}_e)$ at
$|\Delta m^2_{31}|L/4E=\pi/2$. By measuring $P(\nu_\mu\to\nu_e)$ or
$P(\bar{\nu}_\mu\to\bar{\nu}_e)$, the sgn($\Delta m_{31}^2$) ambiguity is
resolved better at longer baselines and the $\delta\leftrightarrow\pi-\delta$
ambiguity is resolved better when $||\Delta m^2_{31}|L/4E-\pi/2|$ is larger.
The $\theta_{23}$ ambiguity may be resolved as a byproduct if $||\Delta
m^2_{31}|L/4E-\pi|$ is small and the CP phase $\delta$ turns out to satisfy
$|\cos(\delta +|\Delta m^2_{31}|L/4E)|\sim1$. It is pointed out that the low
energy option ($E\sim$1GeV) at the off-axis NuMI experiment may be useful in
resolving these ambiguities. The $\nu_e\to\nu_\tau$ channel offers a promising
possibility which may potentially resolve all the ambiguities.


title: The Sterile Neutrino: First Hint of 4th Generation Fermions?

abstract:
  In this letter, we introduce the ``flipped see-saw mechanism'', a new type of
see-saw mechanism with 4th-generation neutrinos. This mechanism naturally
explains the light sterile neutrino which is needed to account for all neutrino
oscillation data. At the same time it predicts that another Majorona neutrino
should exist with mass of the electro-weak scale. We comment on some
implications of this scenario on the oblique parameters used to parameterize
precision electroweak measurements as well as on future experiments.


title:
Non-Abelian field strength bilocal correlator at finite temperature in
  the model of dilute instanton gas

abstract:
  Bilocal correlator in gluodynamics is evaluated at finite temperature in the
framework of instanton gas model. It is demonstrated that vacuum correlation
length decreases with a growing temperature. Obtained results are compared with
lattice data for the bilocal correlator at finite temperature. Density of
instantons and possible structures of nonperturbative vacuum are discussed.


title:
Fermion contribution to the static quantities of arbitrarily charged
  vector bosons

abstract:
  We present an analysis of the one-loop contribution from left- and
right-handed fermions to the static electromagnetic properties of an
arbitrarily charged no self-conjugate vector boson $V$. Particular emphasis is
given to the case of a no self-conjugate neutral boson $V^0$. Regardless the
electric charge of the $V$ boson, a fermionic loop can induce the two CP-even
form factors but only one CP-odd. As a result the corresponding electric dipole
moment is directly proportional to the magnetic quadrupole moment. The CP-odd
form factor might be severely suppressed since it requires the presence of both
left- and right-handed fermions. The behavior of the form factors is analyzed
for several scenarios of the fermion masses in the context of the decoupling
theorem.


title: Spectrum of q-Deformed Schr\"odinger Equation

abstract:
  The energy spectrum of q-deformed Schr\"odinger equation is demonstrated.
This spectrum includes an exponential factor with new quantum numbers--the
$q$-exciting number and the scaling index. The pattern of quark and lepton
masses is qualitatively explained by such a q-deformed spectrum in a composite
model.


title: Pentaquark baryons in SU(3) quark model

abstract:
  We study the SU(3) group structure of pentaquark baryons which are made of
four quarks and one antiquark. The pentaquark baryons form {1}, {8}, {10},
{10}-bar, {27}, and {35} multiplets in SU(3) quark model. First, the flavor
wave functions of all the pentaquark baryons are constructed in SU(3) quark
model and then the flavor SU(3) symmetry relations for the interactions of the
pentaquarks with three-quark baryons and pentaquark baryons are obtained.


title:
Ultra cold neutrons: determination of the electric dipole moment and
  gravitational corrections via matter wave interferometry

abstract:
  We propose experiments using ultra cold neutrons which can be used to
determine the electric dipole moment of the neutron itself, a well as to test
corrections to gravity as they are foreseen by string theories and Kaluza-Klein
mechanisms.


title:
Direct CP Violation in B-+ -> pi-+ omega, pi-+ rho0, pi0 rho-+, and in
  B-bar0(B0) -> pi-+ rho+- With an Enhanced Branching Ratio for pi0 rho0

abstract:
  We present a novel dynamics for generating sizable CP-violating asymmetries
in the decays of charged $B^\mp\to \pi^\mp \omega, \pi^\mp\rho^0,
\pi^0\rho^\mp$, and in $\bar{B^0}(B^0)\to\pi^\mp\rho^\pm$. The dynamics for the
necessary final-state interactions involves the mixing of G-parity eigenstates
of the system $(\bar{D}^*D,D^*\ol{D})$ with the $G=\pm 1$ states of $\pi\omega$
and $\pi\rho$, respectively. The dynamical effect is enhanced by the
empirically large branching ratio for decays to $(\bar{D}^*D,D^*\bar{D})$. A
correlated result is a markedly enhanced branching ratio for
$\bar{B^0}(B^0)\to\pi^0\rho^0$, which has now been observed in two experiments.


title: W Boson Production at Large Transverse Momentum

abstract:
  The production of W bosons at large transverse momentum in p pbar collisions
is studied. The next-to-leading order cross section in this region is dominated
by threshold soft-gluon corrections. The transverse momentum distribution of
the W at the Tevatron is modestly enhanced when next-to-next-to-leading-order
soft-gluon corrections are added, and the dependence on the factorization and
renormalization scales is significantly reduced.


title: Generalized Parton Distributions and Color Transparency

abstract:
  We study the structure of generalized parton distributions in impact
parameter space with the aim of determining the size and role of small
transverse separations components in the quarks wave function. We analyze the
relation between transverse momentum components and transverse separations.
Wave functions with large transverse momentum components can simultaneously
reproduce the behavior of the Dirac form factor at large momentum transfer, and
of the deep inelastic structure functions at Bjorken x -> 1. The presence of
large momentum components does not ensure, however, the dominance of small
transverse distances at large x. We suggest that experiments measuring the
attenuation of hadrons in the nuclear medium, or the onset of color
transparency, can provide an alternative source of information on generalized
parton distributions, by mapping out the behavior of the transverse components
of the wave function.


title: Supersymmetric Origin of Neutrino Mass

abstract:
  Supersymmetry with breaking of R-parity provides an attractive way to
generate neutrino masses and lepton mixing angles in accordance to present
neutrino data. We review the main theoretical features of the bilinear R-parity
breaking (BRpV) model, and stress that it is the simplest extension of the
minimal supersymmetric standard model (MSSM) which includes lepton number
violation. We describe how it leads to a successful phenomenological model with
hierarchical neutrino masses. In contrast to seesaw models, the BRpV model can
be probed at future collider experiments, like the Large Hadron Collider or the
Next Linear Collider, since the decay pattern of the lightest supersymmetric
particle provides a direct connection with the lepton mixing angles determined
by neutrino experiments.


title: Symmetry realization of texture zeros

abstract:
  We show that it is possible to enforce texture zeros in arbitrary entries of
the fermion mass matrices by means of Abelian symmetries; in this way, many
popular mass-matrix textures find a symmetry justification. We propose two
alternative methods which allow to place zeros in any number of elements of the
mass matrices that one wants. They are applicable simultaneously in the quark
and lepton sectors. They are also applicable in Grand Unified Theories. The
number of scalar fields required by our methods may be large; still, in many
interesting cases this number can be reduced considerably. The larger the
desired number of texture zeros is, the simpler are the models which reproduce
the texture.


title: SUSY Seesaw and FCNC

abstract:
  After a quarter of century of intense search for new physics beyond the
Standard Model (SM), two ideas stand out to naturally cope with (i) small
neutrino masses and (ii) a light higgs boson : Seesaw and SUSY. The combination
of these two ideas, i.e. SUSY seesaw exhibits a potentially striking signature:
a strong (or even very strong) enhancement of lepton flavour violation (LFV),
which on the contrary remains unobservable in the SM seesaw. Indeed, even when
supersymmetry breaking is completely flavour blind, Renormalisation Group
running effects are expected to generate large lepton flavour violating entries
at the weak scale. In Grand Unified theories, these effects can be felt even in
hadronic physics. We explicitly show that in a class of SUSY SO(10) GUTs there
exist cases where LFV and CP violation in B-physics can constitute a major road
in simultaneously confirming the ideas of Seesaw and low-energy SUSY.


title: The nonperturbative propagator and vertex in massless quenched QED_d

abstract:
  It is well known how multiplicative renormalizability of the fermion
propagator, through its Schwinger-Dyson equation, imposes restrictions on the
3-point fermion-boson vertex in massless quenched quantum electrodynamics in
4-dimensions (QED$_4$). Moreover, perturbation theory serves as an excellent
guide for possible nonperturbative constructions of Green functions.
  We extend these ideas to arbitrary dimensions $d$. The constraint of
multiplicative renormalizability of the fermion propagator is generalized to a
Landau-Khalatnikov-Fradkin transformation law in $d$-dimensions and it
naturally leads to a constraint on the fermion-boson vertex. We verify that
this constraint is satisfied in perturbation theory at the one loop level in
3-dimensions. Based upon one loop perturbative calculation of the vertex, we
find additional restrictions on its possible nonperturbative forms in arbitrary
dimensions.


title: Neutrino physics from new SNO and KamLAND data and future prospects

abstract:
  We analyze the cumulative data from the latest SNO, KamLAND and other solar
neutrino experiments in the standard scenario of three oscillating active
neutrinos. We determine the solar neutrino oscillation parameters and obtain
new bounds on $\theta_x$. We also place constraints on the fraction of
oscillating solar neutrinos that transform to sterile neutrinos with the $^8$B
flux normalization left free. Concomitantly, we assess the sensitivity of
future data from the SNO and KamLAND experiments to $\theta_x$ and to the
sterile neutrino content of the solar flux.


title:
Minimal left-right symmetric models and new $Z'$ properties at future
  electron-positron colliders

abstract:
  It was recently shown that left-right symmetric models for elementary
particles can be built with only two Higgs doublets. The general consequence of
these models is that the left and right fermionic sectors can be connected by a
new neutral gauge boson $Z'$ having its mass as the only additional new
parameter. In this paper we study the influence of the fundamental fermionic
representation for this new neutral gauge boson. Signals of possible new heavy
neutral gauge bosons are investigated for the future electron-positron
colliders at $\sqrt s = 500$ GeV, 1 TeV and 3 TeV. The total cross sections,
forward-backward and left-right asymmetries and model differences are
calculated for the process $e^+ e^- \longrightarrow \mu^+ \mu^-$. Bounds on
$Z'$ masses are estimated.


title:
Higgs production at a muon collider in the Two Higgs Doublet Model of
  type II

abstract:
  We calculate Higgs production cross sections at a muon collider in the Two
Higgs Doublet Model of type II. The most interesting productions channels are
mu^- mu^+ --> h^0 Z^0, H^0 Z^0, H^- H^+, A^0 Z^0 and H^{-/+} W^{+/-}. The last
channel is compared with the production processes p pbar --> H^{-/+} W^{+/-} X
and p p --> H^{-/+} W^{+/-} X at the Tevatron and LHC energies, respectively,
for large values of tan(beta).


title:
Strong and Yukawa two-loop contributions to Higgs scalar boson
  self-energies and pole masses in supersymmetry

abstract:
  I present results for the two-loop self-energy functions for neutral and
charged Higgs scalar bosons in minimal supersymmetry. The contributions given
here include all terms involving the QCD coupling, and those following from
Feynman diagrams involving Yukawa couplings and scalar interactions that do not
vanish as the electroweak gauge couplings are turned off. The impact of these
contributions on the computation of pole masses of the neutral and charged
Higgs scalar bosons is studied in a few examples.


title:
On the Theory and Simulation of Multiple Coulomb Scattering of Heavy
  Charged Particles

abstract:
  The Moliere theory of multiple Coulomb scattering is modified to take into
account difference between scattering off atomic nuclei and electron. A simple
analytical expression for angular distribution of charged particles passing
through a thick absorber is found. It does not assume any special form for a
differential cross section and has wider range of applicability than a Gaussian
approximation. A well-known method to simulate multiple Coulomb scattering is
based on the different treatment of soft and hard collisions. An angular
deflection in a large number of soft collisions is sampled using the proposed
distribution function, a small number of hard collisions are simulated
directly. A boundary between hard and soft collisions is defined providing a
precise sampling of scattering angle (1% level) and small number of hard
collisions. A corresponding simulation module takes into account projectile and
nucleus charge distributions and exact kinematics of a projectile-electron
interaction.


title: A dynamical gluon mass solution in Mandelstam's approximation

abstract:
  We discuss the pure gauge Schwinger-Dyson equation for the gluon propagator
in the Landau gauge within an approximation proposed by Mandelstam many years
ago. We show that a dynamical gluon mass arises as a solution. This solution is
obtained numerically in the full range of momenta that we have considered
without the introduction of any ansatz or asymptotic expression in the infrared
region. The vertex function that we use follows a prescription formulated by
Cornwall to determine the existence of a dynamical gluon mass in the light cone
gauge. The renormalization procedure differs from the one proposed by
Mandelstam and allows for the possibility of a dynamical gluon mass. Some of
the properties of this solution, such as its dependence on $\Lambda_{QCD}$ and
its perturbative scaling behavior are also discussed.


title: Isospin Breaking in $K\to3\pi$ Decays I: Strong Isospin Breaking

abstract:
  The CP conserving amplitudes for the decays $K\to3\pi$ are calculated in
Chiral Perturbation Theory. The calculation is made at the next-to-leading
order including strong and local electromagnetic isospin breaking. A comparison
is made between the squared amplitudes with and without isospin violation to
estimate the size of the effect. We find corrections of order five percent in
the amplitudes.


title: Review of Higgs Physics at the LHC

abstract:
  Nobody knows exactly what kind of Higgs physics will be unveiled when the
Large Hadron Collider is turned on. There could be one Standard Model Higgs
boson or five Higgs bosons as is the case in two-Higgs-doublet models; there
could be more exotic or even completely unexpected scenarios. In order to be
prepared for the LHC era, a solid understanding of Standard Model or
Standard-Model-like Higgs physics is necessary. The first goal is to discover
the Higgs boson. Afterwards it has to be proven that the new particle is indeed
a Higgs boson. The Higgs boson has to couple to mass and its spin has to be
zero. Additional observables, such as decay width or CP eigenvalue, help to
distinguish between different models. Due to an almost infinite variety of
models, another important goal is to prepare for all possible situations. For
example, Higgs bosons could be produced in decays of heavier particles, or
could decay to invisible particles. In the following, a selection of mainly new
studies by ATLAS and CMS is presented.


title:
$P$-parity of charm and strange particles in electroproduction
  processes, in collinear regime

abstract:
  We show that definite polarization observables for the simplest
electroproduction processes, $\ell+N\to \ell+B(1/2^\pm)+M(0^\pm)$,
$B=Y(\Lambda, \Sigma$ or $Y_c$-hyperon, $\Theta^+$-pentaquark) and $M=K$,
$\bar{K}$ or $D$, are sensitive to the relative P-parity $\pi(B)$ of the
NBM-system. The interference of the longitudinal and transversal amplitudes for
the collinear regime of the processes $\gamma^*+N\to B+M $($\gamma^*$ is the
virtual photon) - at any value of momentum transfer squared and excitation
energy of the $BM$-system - generates model independent relations between
analyzing powers (in unpolarized lepton scattering by polarized target), from
one side, and the components of the produced baryon $B$ polarization. It is
important to stress that these relations depend on the above mentioned
P-parity, and constitute a model independent method for the determination of
unknown parities of strange and charm particles.


title: A New Technique for Finding the Underlying Model Parameters in GMSB

abstract:
  A new, model dependent way of uncovering some of the values of the underlying
GMSB parameters is proposed. This method is faster than the existing procedures
and once enough luminosity is available, can be used to check the consistency
of the model.


title:
Moments of inertia, nucleon axial-vector coupling, the {\bf 8}, {\bf
  10}, $\bar{\bf 10}$ and ${\bf 27}_{3/2}$ mass spectrums and the higher
  SU(3)_f representation mass splittings in the Skyrme model

abstract:
  The broad importance of a recent experimental discovery of pentaquarks
requires more theoretical insight into the structure of higher representation
multiplets. The nucleon axial-vector coupling, moments of inertia, the {\bf 8},
{\bf 10}, $\bar{\bf 10}$, and ${\bf 27}_{3/2}$ absolute mass spectra and the
higher SU(3)$_f$ representation mass splittings for the multiplets ${\bf 8}$,
${\bf 10}$, $\bar{\bf 10}$, ${\bf 27}$, ${\bf 35}$, $\bar{\bf 35}$, and $\bf
64$ are computed in the framework of the minimal ${\rm SU(3)_f}$ extended
Skyrme model by using only one free parameter, i.e., the Skyrme charge $e$. The
analysis presented in this paper represents simple and clear theoretical
estimates, obtained without using any experimental results for higher
($\bar{\bf 10}$,...) multiplets. The obtained results are in good agreement
with other chiral soliton model approaches that more extensively use
experimental results as inputs.


title: Parallelizing the MARS15 Code with MPI for Shielding Applications

abstract:
  The MARS15 Monte Carlo code capabilities to deal with time-consuming deep
penetration shielding problems and other computationally tough tasks in
accelerator, detector and shielding applications, have been enhanced by a
parallel processing option. It has been developed, implemented and tested on
the Fermilab Accelerator Division Linux cluster and network of Sun
workstations. The code uses MPI. It is scalable and demonstrates good
performance. The general architecture of the code, specific uses of message
passing, and effects of a scheduling on the performance and fault tolerance are
described.


title: Signatures of Large Extra Dimensions

abstract:
  String theory suggests modifications of our spacetime such as extra
dimensions and the existence of a mininal length scale. In models with
addidional dimensions, the Planck scale can be lowered to values accessible by
future colliders. Effective theories which extend beyond the standart-model by
including extra dimensions and a minimal length allow computation of
observables and can be used to make testable predictions. Expected effects that
arise within these models are the production of gravitons and black holes.
Furthermore, the Planck-length is a lower bound to the possible resolution of
spacetime which might be reached soon.


title: Central hadron production in crossing of dedicated hadronic beams

abstract:
  The original aim of this work, was to give a {\it brief} review of gluonic
mesons, to be searched for in an experiment dedicated to central production of
a relatively low mass hadronic system, whereby rapidity gaps are possible to
impose, requiring initial hadron beams of sufficient energy and intensity.
Sections 1 - 4 are devoted to this aim. The various theoretical ingrediants,
covering several decades of thinking by many, including the author, are
contained in 5 appendices, dedicated to specifically gluonic binaries within
QCD and their underlying Yang-Mills base structure.


title:
Exact series solution to the two flavor neutrino oscillation problem in
  matter

abstract:
  In this paper, we present a real non-linear differential equation for the two
flavor neutrino oscillation problem in matter with an arbitrary density
profile. We also present an exact series solution to this non-linear
differential equation. In addition, we investigate numerically the convergence
of this solution for different matter density profiles such as constant and
linear profiles as well as the Preliminary Reference Earth Model describing the
Earth's matter density profile. Finally, we discuss other methods used for
solving the neutrino flavor evolution problem.


title: Spectra and decays of pi pi and pi K atoms

abstract:
  We describe the spectra and decays of pi pi and pi K atoms within a
non-relativistic effective field theory. The evaluations of the energy shifts
and widths are performed at next-to-leading order in isospin symmetry breaking.
We provide general formulae for all S-states, and discuss the states with
angular momentum one in some detail. The prediction for the lifetime of the pi
K atom in its ground-state yields tau = (3.7 \pm 0.4) * 10^{-15} sec.


title:
Determination of the mass of the LambdaLambda dibaryon by the method of
  QCD sum rules

abstract:
  The method of QCD sum rules is used to calculate the mass of a hypothetical
stable dihyperon H with the quantum numbers of two Lambda hyperons, whose
existence was predicted by R.L. Jaffe [Phys. Rev. Lett. 31, 195, 617(E) (1977)]
in the framework of the MIT quark-bag model. Within the accuracy of the method
of QCD sum rules, which in the present case is 20%, the results obtained here
agree with those of Jaffe. However, the method of sum rules does not make it
possible to determine whether the mass of the dihyperon H lies above or below
the Lambda Lambda threshold (i.e., whether H is stable).


title: Special features of heavy quark-antiquark pair production ratios at LHC

abstract:
  We consider the ratio of the cross section of production of heavy
bottom-antibottom pairs ($\sigma_{b\bar b}$) to the cross section of production
of top-antitop pairs ($\sigma_{t\bar t}$) at LHC. We show that in this ratio a
major fraction of virtual contributions (including QCD components) disappears,
leaving a residual dominant electroweak Yukawa effect that might be strongly
enhanced in the presence of supersymmetry. A quantitative numerical analysis of
the size of the effect is also performed under the assumption of a relatively
light supersymmetric scenario.


title: Width of the J^P=1/2^+ pentaquark in the quark-diquark model

abstract:
  We analyse the width of the $\theta(\frac12^+)$ pentaquark assuming that it
is a bound state of two extended spin-zero $ud$-diquarks and the $\bar s$
antiquark (the Jaffe-Wilczek scenario). The width obtained when the size
parameters of the pentaquark wave function are taken to be close to the
parameters of the nucleon is found to be $\simeq 150$ MeV, i.e. it has a normal
value for a $P$-wave hadron decay with the corresponding energy
release.However, we found a strong dynamical suppression of the decay width if
the pentaquark has an asymmetric "peanut" structure with the strange antiquark
in the center and the two diquarks rotating around. In this case a decay width
of $\simeq$ 1 MeV is a natural possibility.


title: Current Status of the CKM Matrix and the CP Violation

abstract:
  These lectures give an introduction and the current status of flavour physics
in the quark sector, with special attention to the CKM matrix and CP violation.
We describe the measurements which contribute to the determination of the CKM
matrix elements and how, together with important theoretical developments, they
have significantly improved our knowledge on the flavour sector of the Standard
Model. These lectures are complemented by the seminar of U. Mallik (see these
proceedings) which describes in more details the most recent CP-violating
related measurements by the B-factories. The results presented are up-to-date
till winter 2004.


title: eta, eta-prime -> pi^+ pi^- gamma with coupled channels

abstract:
  The decays eta, eta-prime -> pi^+ pi^- gamma are investigated within an
approach that combines one-loop chiral perturbation theory with a coupled
channel Bethe-Salpeter equation which satisfies unitarity constraints and
generates vector mesons dynamically from composite states of two pseudoscalar
mesons. It is furthermore shown that the inclusion of the eta-prime as a
dynamical degree of freedom does not renormalize the Wess-Zumino-Witten term.


title: Electroweak symmetry breaking after LEP1 and LEP2

abstract:
  In a generic 'universal' theory of electroweak symmetry breaking, non
fine-tuned heavy new physics affects the low-energy data through four
parameters, which include and properly extend the generally insufficient S and
T. Only by adding the LEP2 data to the global electroweak fit, can all these
four form factors be determined and deviations from the SM be strongly
constrained. Several of the recently proposed models (little Higgs, gauge
bosons in extra dimensions or Higgsless models in 5D) are recognized to be
'universal' in a straightforward way after a proper definition of the effective
vector boson fields. Among various applications, we show that proposed
Higgsless models in 5D, when calculable, do not provide a viable description of
electroweak symmetry breaking in their full range of parameters.


title:
Experimental data on the single spin asymmetry and their interpretations
  by the chromo-magnetic string model

abstract:
  An attempt is made to interpret the various existing experimental data on the
single spin asymmetries in inclusive pion production by the polarized proton
and antiproton beams. As the basis of analysis the chromo-magnetic string model
is used. A whole measured kinematic region is covered. The successes and fails
of such approach are outlined. The possible improvements of model are
discussed.


title: On the chiral phase transition in hadronic matter

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. Due to a specific power dependence of baryon masses on the chiral
condensate the phase transition becomes of the first order at the temperature
T=T_{ph}(\rho) for \rho>0. At temperatures T_{cont}(\rho) > T > T_{ph}(\rho)
there is a mixed phase consisting of the quark phase (stable) and the hadron
phase (unstable). At the temperature T = T_{cont}(\rho) the system experiences
a continuous transition to the pure chirally symmetric phase.


title: QCD Functional Integrals for Systems with Nonzero Chemical Potential

abstract:
  This paper reviews some recent progress on QCD functional integrals at
nonzero chemical potentials. One issue discussed is the use of QCD inequalities
for this regime. In particular, the positivity of the integrand of particular
Euclidean space functional integrals for two-flavor QCD with degenerate quark
masses is used to demonstrate that the free energy per unit volume for QCD with
a baryon chemical potential $\mu_B$ (and zero isospin chemical potential) is
necessarily greater than the free energy with isospin chemical potential $\mu_I
= \frac{2 \mu_B}{N_c} $ (and zero baryon chemical potential). This result may
be of use in model finite density systems. A corollary to this result is a
rigorous {\it ab initio} bound on the nucleon mass. The second major issue
addressed is the so-called ``Silver Blaze'' problem: the fact that at zero
temperature and chemical potentials less than some critical value the free
energy remains as that of the vacuum. This is puzzling in the context of a
functional integral since a chemical potential affects the functional
determinant of the Dirac operator and any nonzero $\mu$ changes every
eigenvalue of the Dirac operator compared to the $\mu=0$ value. The isospin
Silver Blaze problem is solved through the study of the spectrum of the
operator $\gamma_0 (\dslash + m)$. The status of the baryon Silver Blaze
problem is briefly discussed.


title: Supersymmetric dark-matter Q-balls and their interactions in matter

abstract:
  Supersymmetric extensions of the Standard Model contain non-topological
solitons, Q-balls, which can be stable and can be a form of cosmological dark
matter. Understanding the interaction of SUSY Q-balls with matter fermions is
important for both astrophysical limits and laboratory searches for these dark
matter candidates. We show that a baryon scattering off a baryonic SUSY Q-ball
can convert into its antiparticle with a high probability, while the baryon
number of the Q-ball is increased by two units. For a SUSY Q-ball interacting
with matter, this process dominates over those previously discussed in the
literature.


title:
Nuclear Modification Factor in d+Au Collisions: Onset of Suppression in
  the Color Glass Condensate

abstract:
  We perform a quantitative analysis of the nuclear modification factor in
deuteron--gold collisions R(dAu) within the Color Glass Condensate approach,
and compare our results with the recent data from RHIC experiments. Our model
leads to Cronin enhancement at mid-rapidity, while at forward rapidities it
predicts strong suppression of R(dAu) at all pT due to low-x evolution. We
demonstrate that our results are consistent with the data for dAu charged
hadron spectra, R(dAu) and R(CP) recently reported for rapidities in the
interval eta=0--3.2 by the BRAHMS experiment at RHIC. We also make a prediction
for R(pA) at mid-rapidity in pA collisions at the LHC.


title: Radiation from polarized electrons in oriented crystals at high energy

abstract:
  Radiation from high energy electrons in an oriented crystal can be considered
in a frame of the quasiclassical operator method which appears to be a most
satisfactory approach to the problem. Under some quite generic assumptions the
general expression is derived for the probability of circularly polarized
photon emission from the longitudinally polarized electron in oriented crystal.
The particular mechanism of radiation depends on interrelation between the
angle of incidence $\vartheta_0$ (angle between the momentum of initial
electron and axis (plane) of crystal) and angle $\vartheta_v \equiv V_0/m$
($V_0$ is the scale of a potential of axis or a plane relative to which the
angle $\vartheta_0$ is defined). When $\vartheta_0 \ll \vartheta_v$ one has
magnetic bremsstrahlung type of radiation (with corrections $\propto
\vartheta_0^2$ which are due to inhomogeneous character of field in crystal).
When $\vartheta_0 \gg \vartheta_v$ one obtains the theory of coherent
bremsstrahlung, while for $\vartheta_0 \geq \vartheta_v$ one arrives to the
modified theory of coherent bremsstrahlung. At high energy radiation in
oriented crystals is strongly enhanced comparing with standard bremsstrahlung.


title: Curvaton mechanism and its implications to sneutrino cosmology

abstract:
  I describe basic features of the curvaton scenario where the primordial
fluctuation of a late-decaying scalar field, called ``curvaton,'' becomes the
dominant source of the cosmic density fluctuations. I also discuss its
implications to sneutrino cosmology.


title: Models of Neutrino Masses and Mixings

abstract:
  We review theoretical ideas, problems and implications of neutrino masses and
mixing angles. We give a general discussion of schemes with three light
neutrinos. Several specific examples are analyzed in some detail, particularly
those that can be embedded into grand unified theories.


title:
Pt-imbalance in dimuon+jet production as a signal of partonic energy
  loss in heavy ion collisions at LHC

abstract:
  We consider a hard jet production tagged by a muon pair in ultrarelativistic
heavy ion collisions. The process cross section is calculated by the CompHEP
Monte-Carlo generator taking into account full gamma*/Z interference pattern at
LHC energies. We have found that reasonable statistics, ~1000 events per 1
month of LHC run with lead beams, can be expected for realistic geometrical
acceptance and kinematic cuts. The transverse momentum imbalance due to
interactions of jet partons in the medium is evaluated for mu+mu-pair+jet
correlation, as well as for the correlation between mu+mu- pair and a leading
particle in a jet. Theoretical and experimental uncertainties of these
observables are discussed.


title:
Constraints on a scalar-pseudoscalar Higgs mixing at future e+e-
  colliders: an update

abstract:
  We perform an update of our previous analysis on the constraints on possible
deviations of Hbb coupling from its Standard Model value, arising from a
scalar-pseudoscalar mixing. In this paper we include a complete simulation of
the process e+ e- -> b bbar e+ e- and combine it with our previous results to
obtain tighter bounds on the deviations of the parameters describing this
coupling that could be measured at the Next Linear Collider.


title: The SPS Heavy Ion Programme

abstract:
  Statistical QCD predicts with increasing temperature a transition from
hadronic matter to a plasma of deconfined quarks and gluons. The SPS Heavy Ion
Programme was initiated to study this transition and the resulting quark-gluon
plasma. After summarizing the different probes for the collision evolution, I
survey the experimental results obtained so far and assess the conclusions that
can be drawn.


title:
Determining the spin of supersymmetric particles at the LHC using lepton
  charge asymmetry

abstract:
  If signals suggesting supersymmetry (SUSY) are discovered at the LHC then it
will be vital to measure the spin of the new particles to demonstrate that they
are indeed the predicted super-partners. A method is discussed by which the
spins of some of the SUSY particles can be investigated. Angular distributions
in sparticle decays lead to charge asymmetry in lepton-jet invariant mass
distributions. The size of the asymmetry is proportional to the primary
production asymmetry between squarks and anti-squarks. Monte Carlo simulations
are performed for a particular mSUGRA model point at the LHC. The resultant
asymmetry distributions are consistent with a spin-0 slepton and a spin-half
neutralino-two, but are not consistent with the pure phase-space decays one
would obtain from both sparticles being scalars.


title: Non-Fermi Liquid Effects in QCD at High Density

abstract:
  We study non-Fermi liquid effects due to the exchange of unscreened magnetic
gluons in high density QCD by using an effective field theory. A one-loop
calculation gives the well known result that magnetic gluons lead to a
logarithmic enhancement in the fermion self energy near the Fermi surface. The
self energy is of the form $\Sigma(\omega)\sim \omega\gamma\log(\omega)$, where
$\omega$ is the energy of the fermion, $\gamma=O(g^2)$, and $g$ is the coupling
constant. Using an analysis of the Dyson-Schwinger equations we show that, in
the weak coupling limit, this result is not modified by higher order
corrections even in the regime where the logarithm is large,
$\gamma\log(\omega)\sim 1$. We also show that this result is consistent with
the renormalization group equation in the high density effective field theory.


title: SUSY Production From TeV Scale Blackhole at LHC

abstract:
  If the fundamental Planck scale is near a TeV, then we should expect to see
TeV scale black holes at the LHC. Similarly, if the scale of supersymmetry
breaking is sufficiently low, then we might expect to see light supersymmetric
particles in the next generation of colliders. If the mass of the
supersymmetric particle is of order a TeV and is comparable to the temperature
of a typical TeV scale black hole, then such sparticles will be copiously
produced via Hawking radiation: The black hole will act as a resonance for
sparticles, among other things. In this paper we compared various signatures
for SUSY production at LHC, and we contrasted the situation where the
sparticles are produced directly via parton fusion processes with the situation
where they are produced indirectly through black hole resonances. We found that
black hole resonances provide a larger source for heavy mass SUSY (squark and
gluino) production than the direct pQCD-SUSY production via parton fusion
processes depending on the values of the Planck mass and blackhole mass. Hence
black hole production at LHC may indirectly act as a dominant channel for SUSY
production. We also found that the differential cross section d\sigma/dp_t for
SUSY production increases as a function of the p_t (up to p_t equal to about 1
TeV or more) of the SUSY particles (squarks and gluinos), which is in sharp
contrast with the pQCD predictions where the differential cross section
d\sigma/dp_t decreases as p_t increases for high p_t about 1 TeV or higher.
This is a feature for any particle emission from TeV scale blackhole as long as
the temperature of the blackhole is very high (~ TeV). Hence measurement of
increase of d\sigma/dp_t with p_t for p_t up to about 1 TeV or higher for final
state particles might be a useful signature for blackhole production at LHC.


title: Hadron Collider Signatures for New Interactions of Top and Bottom Quarks

abstract:
  One of the main goals for hadron colliders is the study of the properties of
the third generation quarks. We study the signatures for new TeV resonances
that couple to top or bottom quarks both at the Tevatron Run II and at the LHC.
We find that in the simplest production processes of Drell-Yan type at the
Tevatron, the signals are overwhelmed by QCD backgrounds. We also find that it
is possible to study these resonances when they are produced in association
with a pair of heavy quarks or in association with a single top at the LHC.In
particular, with an integrated luminosity of 300 fb$^{-1}$ at the LHC, it is
possible to probe resonance masses up to around 2 TeV.


title: Microscopic black hole detection in UHECR: the double bang signature

abstract:
  According to recent conjectures on the existence of large extra dimensions in
our universe, black holes may be produced during the interaction of Ultra High
Energy Cosmic Rays with the atmosphere. However, and so far, the proposed
signatures are based on statistical effects, not allowing identification on an
event by event basis, and may lead to large uncertainties. In this note, events
with a double bang topology, where the production and instantaneous decay of a
microscopic black hole (first bang) is followed, at a measurable distance, by
the decay of an energetic tau lepton (second bang) are proposed as an almost
background free signature. The characteristics of these events and the
capability of large cosmic ray experiments to detect them are discussed.


title:
Neutralino dark matter in supergravity theories with non-universal
  scalar and gaugino masses

abstract:
  We analyse the direct detection of neutralino dark matter in supergravity
scenarios with non-universal soft scalar and gaugino masses. In particular, the
neutralino-nucleon cross section is computed and compared with the sensitivity
of detectors. We take into account the most recent experimental and
astrophysical constraints on the parameter space, including those coming from
charge and colour breaking minima. Gaugino non-universalities provide a larger
flexibility in the neutralino sector. In particular, when combined with
non-universal scalars, neutralinos close to the present detection limits are
possible with a wide range of masses, from over 400 GeV to almost 10 GeV. We
study the different possibilities which allow to increase or decrease the
neutralino mass and explain the properties of those regions in the parameter
space with a large cross section.


title:
Two Photon Background and the Reach of a Linear Collider for
  Supersymmetry in WMAP Favored Coannihilation Regions

abstract:
  A neutralino relic density in accord with WMAP measurements can be found in
the minimal supergravity (mSUGRA) model in several regions of parameter space:
the stau co-annihilation corridor at low m_0 and the hyperbolic branch/focus
point (HB/FP) region at large m_0 at the edges of parameter space, and the bulk
and Higgs boson funnel regions within. In the regions at the edge, the mass gap
between the next-to-lightest SUSY particle (NLSP) and the lightest SUSY
particle (LSP) becomes small, and backgrounds from $\gamma\gamma\to f\bar{f}$
($f$ is a SM fermion) become important for NLSP detection at an $e^+e^-$ linear
collider. We evaluate these backgrounds from bremsstrahlung and beamstrahlung
photons, and demonstrate that these do not preclude the observability of the
signal for the cases where either the stau or the chargino is the NLSP. We also
delineate the additional portion of the stau coannihilation region, beyond what
can be accessed via a search for selectrons and smuons, that can be probed by a
search for di-tau-jet events plus missing energy. The reach of a LC for SUSY in
the HB/FP region is shown for an updated value of $m_t\simeq 180$ GeV as
recently measured by the $D\O$ experiment.


title: Stability Criteria for Breached Pair Superfluidity

abstract:
  We present simple, concrete, two-fermion models that exhibit
thermodynamically stable isotropic translationally-invariant gapless superfluid
states (breached pair superfluidity). The mass ratio between the components and
the momentum structure of the interaction are crucial for determining the
stability of such states: Idealized, momentum-independent (``contact'')
interactions are insufficient.


title:
Shadowing Effects on the Nuclear Suppression Factor, R_dAu, in d+Au
  Interactions

abstract:
  We explore how nuclear modifications to the nucleon parton distributions
affect production of high transverse momentum hadrons in deuteron-nucleus
collisions. We calculate the charged hadron spectra to leading order using
standard fragmentation functions and shadowing parameterizations. We obtain the
d+Au to pp ratio both in minimum bias collisions and as a function of
centrality. The minimum bias results agree reasonably well with the BRAHMS data
while the calculated centrality dependence underestimates the data and is a
stronger function of p_T than the data indicate.


title: Determining gamma using B->D^**K

abstract:
  We propose the use of B -->D^**K decay modes for a theoretically clean
determination of the weak phase gamma. The self tagging decays of the neutral
D^** mesons, makes a measurement of the b --> u\bar{c}s amplitude feasible.
This overcomes the problem with the Gronau-London-Wyler proposal. Even an upper
limit on the branching ratio for B^- -->bar{D}^{**0}K^- will place an
assumption free, lower bound on gamma.


title:
Pion form factor in QCD: From nonlocal condensates to NLO analytic
  perturbation theory

abstract:
  We present an investigation of the pion's electromagnetic form factor
F_{\pi}(Q^2) in the spacelike region utilizing two new ingredients: (i) a
double-humped, endpoint-suppressed pion distribution amplitude derived before
via QCD sum rules with nonlocal condensates--found to comply at the 1\sigma
level with the CLEO data on the $\pi\gamma$ transition--and (ii) analytic
perturbation theory at the level of parton amplitudes for hadronic reactions.
The computation of F_{\pi}(Q^2) within this approach is performed at NLO of QCD
perturbation theory (standard and analytic), including the evolution of the
pion distribution amplitude at the same order. We consider the NLO corrections
to the form factor in the \bar{MS} scheme with various renormalization scale
settings and also in the \alpha_V-scheme. We find that using standard
perturbation theory, the size of the NLO corrections is quite sensitive to the
adopted renormalization scheme and scale setting. The main results of our
analysis are the following: (i) Replacing the QCD coupling and its powers by
their analytic images, both dependencies are diminished and the predictions for
the pion form factor are quasi scheme and scale-setting independent. (ii) The
magnitude of the factorized pion form factor, calculated with the
aforementioned pion distribution amplitude, is only slightly larger than the
result obtained with the asymptotic one in all considered schemes. (iii)
Including the soft pion form factor via local duality and ensuring the Ward
identity at Q^2=0, we present predictions that are in remarkably good agreement
with the existing experimental data both in trend and magnitude.


title: Absorption in Ultra-Peripheral Nucleus-Atom Collisions in Crystal

abstract:
  The Glauber theory description of particle- and nucleus-crystal Coulomb
interactions at high-energy is developed. The allowance for the lattice thermal
vibrations is shown to produce strong absorption effect which is of prime
importance for quantitative understanding of the coherent Coulomb excitation of
ultra-relativistic particles and nuclei passing through the crystal.


title:
Ultra-Relativistic Nuclei in Crystal Channel: Coulomb Scattering,
  Coherence and Absorption

abstract:
  We incorporate the effect of lattice thermal vibrations into the Glauber
theory description of particle- and nucleus-crystal Coulomb interactions at
high-energy. The allowance for the lattice thermal vibrations is shown to
produce strong absorption effect: the phase shift function of the
multiple-diffraction scattering on a chain of $N$ identical atoms acquires
large imaginary part and the radius of the absorption region in the impact
parameter plane grows logarithmically with $N$. Consequences of this
observation for the elastic and quasi-elastic Coulomb scattering are discussed.
Practically interesting example of the coherent Coulomb excitation of
ultra-relativistic particles and nuclei passing through the crystal is
considered in detail.


title:
CP violation in the partial width asymmetries for B^- -> pi^+ pi^- K^-
  and B^- -> K^+ K^- K^- decays

abstract:
  We investigate a possibility of observing CP asymmetries in the partial
widths for the decays B^- -> pi^+ pi^- K^- and B^- -> K^+ K^- K^- produced by
the interference of the non-resonant decay amplitude with the resonant
amplitudes. The resonant states which subsequently decay into pi^+ pi^- and K^+
K^- or K^- pi^+ are charmonium c(bar) c states with J^P = 0^+, 1^-, 1^+ or the
phi(1020) meson. We find that the largest partial width asymmetry comes from
the chi_c0 resonance, while the resonances K^*_0(1430) and psi(2S) give a
partial width asymmetry of the order 10%.


title:
What RHIC Experiments and Theory tell us about Properties of Quark-Gluon
  Plasma ?

abstract:
  This brief review summarizes the main experimental discoveries made at RHIC
and then discusses their implications. The robust collective flow phenomena are
well described by ideal hydrodynamics, with the Equation of State (EoS)
predicted by lattice simulations. However the transport properties turned out
to be unexpected, with rescattering cross section one-to-two orders of
magnitude larger than expected from perturbative QCD. These and other
theoretical developments indicate that Quark-Gluon Plasma (QGP) produced at
RHIC, and probably in a wider temperature region $T_c<T<4T_c$, is not at all a
weakly coupled quasiparticle gas, but is rather in a strongly coupled regime,
sQGP for short. After reviewing two other ``strongly coupled systems'', (i) the
strongly coupled supersymmetric theories studied via Maldacena duality; (ii)
trapped ultra-cold atoms with very large scattering length, we return to sQGP
and show that there should exist literally hundreds of bound states in it in
the RHIC domain, most them colored. We then discuss recent ideas of their
effect on the EoS, viscosity and jet quenching.


title:
Late Time Neutrino Masses, the LSND Experiment and the Cosmic Microwave
  Background

abstract:
  Models with low-scale breaking of global symmetries in the neutrino sector
provide an alternative to the seesaw mechanism for understanding why neutrinos
are light. Such models can easily incorporate light sterile neutrinos required
by the LSND experiment. Furthermore, the constraints on the sterile neutrino
properties from nucleosynthesis and large scale structure can be removed due to
the non-conventional cosmological evolution of neutrino masses and densities.
We present explicit, fully realistic supersymmetric models, and discuss the
characteristic signatures predicted in the angular distributions of the cosmic
microwave background.


title: Coherent QCD multiple scattering in proton-nucleus collisions

abstract:
  We argue that high energy proton-nucleus (p+A) collisions provide an
excellent laboratory for studying nuclear size enhanced parton multiple
scattering where power corrections to the leading twist perturbative QCD
factorization approach can be systematically computed. We identify and resum
these corrections and calculate the centrality and rapidity dependent nuclear
suppression of single and double inclusive hadron production at moderate
transverse momenta. We demonstrate that both spectra and dihadron correlations
in p+A reactions are sensitive measures of such dynamical nuclear attenuation
effects


title: QCD spin physics: status, and prospects for RHIC

abstract:
  We review some of the recent developments in QCD spin physics and highlight
the spin program now underway at RHIC.


title: Subsystem of neutral mesons beyond the Lee-Oehme-Yang approximation

abstract:
  General properties of eigenvectors and eigenvalues for an effective
Hamiltonian governing time evolution in a two state subspace of the state space
of the total system under consideration are discussed. The Lee, Oehme and Yang
(LOY) theory of time evolution in such a subspace and CP-- and CPT--symmetry
properties of the LOY effective Hamiltonian are considered. The CPT
transformation properties of the exact effective Hamiltonian for two state
subspace are discussed also. Using the Khalfin Theorem we show that contrary to
the properties of the LOY theory, the diagonal matrix elements of the exact
effective Hamiltonian governing the time evolution in the subspace of states of
an unstable particle and its antiparticle need not be equal at for $t > t_{0}$
($t_{0}$ is the instant of creation of the pair) when the total system under
consideration is CPT invariant but CP noninvariant. Using the more accurate
approximation than the LOY one we show that the interpretation of the tests
measuring the difference between the $K_{0}$ mass and the ${\bar K}_{0}$ mass
as the CPT--symmetry test is wrong.


title:
Symmetric Mass Matrix with Two Zeros in SUSY SO(10) GUT, Lepton Flavor
  Violations and Leptogenesis

abstract:
  We study the symmetric 2-zero texture of the neutrino mass matrix, which is
obtained from the symmetric Dirac neutrino mass matrix with 2-zeros and
right-handed Majorana neutrino mass matrix with the general form via the
see-saw mechanism, for the SUSY SO(10) GUT model including the Pati-Salam
symmetry. We show that the only one texture in our model, having degenerate
mass spectrum for the 1st and 2nd generation of right-handed Majorana neutrino,
can simultaneously explain the current neutrino experimental data, lepton
flavor violating processes and baryon asymmetry of the Universe. Within such a
framework, the predicted values of the light and heavy Majorana neutrino
masses, together with $|U_{e3}|$, $J_{{\rm CP}}$ and $|< M_{ee} >|$, are almost
uniquely determined.


title: The Littlest Higgs boson at a photon collider

abstract:
  We calculate the corrections to the partial widths of the light Higgs boson
in the Littlest Higgs model due to effects of the TeV-scale physics. We focus
on the loop-induced Higgs coupling to photon pairs, which is especially
sensitive to the effects of new particles running in the loop. This coupling
can be probed with high precision at a photon collider in the process gamma
gamma -> H -> b bbar for a light Higgs boson with mass 115 GeV <= MH <~ 140
GeV. Using future LHC measurements of the parameters of the Littlest Higgs
model, one can calculate a prediction for this process, which will serve as a
test of the model and as a probe for a strongly-coupled UV completion at the 10
TeV scale. We outline the prospects for measuring these parameters with
sufficient precision to match the expected experimental uncertainty on gamma
gamma -> H -> b bbar.


title:
Predictions for energy distribution and polarization of the positron
  from the polarized muon decay

abstract:
  The pure lepton decay of the polarized muon is considered, accounting for a
new tensor interaction which is outside of the Michel local interactions. This
interaction leads to new energy distribution and polarization of the final
charged lepton. The presence of such a type of interaction is strongly required
for the description of the latest experimental results on the weak radiative
pion decay in the full kinematic region. Assuming quark--lepton universality,
predictions for a deviation from the Standard Model are made using only one new
parameter. They do not contradict the present experimental data and can be
verified further in the on-going experiments at PSI and TRIUMF, at least to the
level of 3 standard deviations.


title: MSGUT a la Pati-Salam : from Futility to Precision

abstract:
  We compute the complete gauge and chiral superheavy mass spectrum and
couplings of the Minimal Susy GUT (based on the $ \bf {210- \oot- 126-10}$
irreps as the Higgs system) by decomposing SO(10) labels in terms of Pati Salam
subgroup labels. The spectra are sensitive functions of the single complex
parameter that controls MSGUT symmetry breaking. We scan for the dependence of
the threshold corrections to the Weinberg angle and Unification scale as
functions of this parameter. We find that for generic values of the GUT scale
parameters the modifications are within 10% of the one loop values and can be
much smaller for significant regions of the parameter space. This shows that
contrary to longstanding conjectures, high precision calculations are not
futile but rather necessary and feasible in the MSGUT. The couplings of the
matter supermultiplets are made explicit and used to identify the channels for
exotic ($\Delta B\neq 0$) processes and to write down the associated bare $d=5$
operators (some of both are novel). The mass formulae for all matter fermions
are derived. This sets the stage for a comprehensive RG based phenomenological
analysis of the MSGUT.