title: CP-violating theta parameter in the domain model of the QCD vacuum

abstract:
  A non-zero CP-violating $\theta$ parameter is treated in the domain model
which assumes a cluster-like vacuum structure whose units are characterised in
particular by a topological charge which is not necessarily an integer number.
In the present paper we restrict consideration to rational values of the
charge. The model has previously been shown to manifest confinement,
spontaneous chiral symmetry breaking and the absence of an axial U(1) Goldstone
boson. We find that the specific structure of the minima of the free energy
density of the domain ensemble forces a $2\pi$-periodicity of observables in
$\theta$ for any number of light quarks, that vacuum doubling occurs at
$\theta=\pi$ for any $N_f>1$ and any value of topological charge $q$. These
features are in agreement with expectations based on anomalous Ward identities
and large $N_c$ effective theories. We find also additional values of $\theta$
depending on $q$ for which vacuum doubling occurs.


title: Tensor susceptibility calculated in the hadronization process

abstract:
  The tensor susceptibility of QCD vacuum is calculated in the global color
symmetry model. The input parameters for gluon propagators are determined via
the simplified equation for calculating the pion decay constant. The reason for
the great discrepancy between our results and those from QCD sum rules and from
chiral constituent quark model is discussed.


title:
Antineutrino Background from Spent Fuel Storage in sensitive Searches
  for theta_13 at Reactors

abstract:
  Sensitive searches for antineutrino oscillations in atmospheric mass
parameter region much discussed in recent years are based on accurate
comparison of the inverse beta decay positron spectra measured in two (or more)
detectors, far and near, stationed e.g. at ~1000 m and ~100 m from the
reactor(s). We show that antineutrinos emitted from the stored irradiated fuel
can differently distort the soft part of positron spectra measured in the far
and near detector and thus mimic (or hide) the oscillation signal


title: Baryonic Decays of Charmonium - a Window on Internal Baryon Structure

abstract:
  The baryonic decays of $J/ \psi$ provide a new way to study the internal
structure of baryons. A simple diquark model applied to the calculation of the
$\bar{B}B$ decay cross-sections is compared with the ordinary constituent quark
model. Various models also give different predictions for the rates involving
the $N^{\ast}(1440)$ resonance in the final state.


title:
Probing supernova shock waves and neutrino flavor transitions in
  next-generation water-Cherenkov detectors

abstract:
  Several current projects aim at building a large water-Cherenkov detector,
with a fiducial volume about 20 times larger than in the current
Super-Kamiokande experiment. These projects include the Underground nucleon
decay and Neutrino Observatory (UNO) in the Henderson Mine (Colorado), the
Hyper-Kamiokande (HK) detector in the Tochibora Mine (Japan), and the MEgaton
class PHYSics (MEMPHYS) detector in the Frejus site (Europe). We study the
physics potential of a reference next-generation detector (0.4 Mton of fiducial
mass) in providing information on supernova neutrino flavor transitions with
unprecedented statistics. After discussing the ingredients of our calculations,
we compute neutrino event rates from inverse beta decay ($\bar\nu_e p\to e^+ n
$), elastic scattering on electrons, and scattering on oxygen, with emphasis on
their time spectra, which may encode combined information on neutrino
oscillation parameters and on supernova forward (and possibly reverse) shock
waves. In particular, we show that an appropriate ratio of low-to-high energy
events can faithfully monitor the time evolution of the neutrino crossing
probability along the shock-wave profile. We also discuss some background
issues related to the detection of supernova relic neutrinos, with and without
the addition of gadolinium.


title: An Integrated Tool for Loop Calculations: aITALC

abstract:
  aITALC, a new tool for automating loop calculations in high energy physics,
is described. The package creates Fortran code for two-fermion scattering
processes automatically, starting from the generation and analysis of the
Feynman graphs. We describe the modules of the tool, the intercommunication
between them and illustrate its use with three examples.


title:
Gauge Mediated Supersymmetry Breaking and Multi-TeV Gamma-Rays from the
  Galactic Center

abstract:
  Recently, the HESS telescope has observed a gamma-ray spectrum from the
galactic center extending to at least $\sim$10 TeV. Although it has been
suggested that this could be the product of annihilating dark matter particles,
the candidates most frequently discussed (such as neutralinos) are far too
light to account for this flux. In this letter, we consider stable particles
from the messenger sector of gauge mediated supersymmetry breaking models as an
alternative dark matter candidate. We find that a 20 to 30 TeV messenger state
can provide a thermal relic density consistent with the measured dark matter
density of the universe and can indeed generate the spectrum observed by HESS.


title: Probing the Perturbative NLO Parton Evolution in the Small-$x$ Region

abstract:
  A dedicated test of the perturbative QCD NLO parton evolution in the very
small-$x$ region is performed. We find a good agreement with recent precision
HERA-data for $F_2^p(x,Q^2)$, as well as with the present determination of the
curvature of $F_2^p$. Characteristically, perturbative QCD evolutions result in
a positive curvature which increases as $x$ decreases. Future precision
measurements in the very small $x$-region, $x<10^{-4}$, could provide a
sensitive test of the range of validity of perturbative QCD


title: Neutrino Mass and Grand Unification

abstract:
  Seesaw mechanism appears to be the simplest and most appealing way to
understand small neutrino masses observed in recent experiments. It introduces
three right handed neutrinos with heavy masses to the standard model, with at
least one mass required by data to be close to the scale of conventional grand
unified theories. This may be a hint that the new physics scale implied by
neutrino masses and grand unification of forces are one and the same. Taking
this point of view seriously, I explore different ways to resolve the puzzle of
large neutrino mixings in grand unified theories such as SO(10) and models
based on its subgroup $SU(2)_L\times SU(2)_R\times SU(4)_c$.


title: Nonstandard CP violation in B --> D_s D^0\pi^0 decays

abstract:
  We study the possibility of measuring nonstandard CP violation effects
through Dalitz plot analysis in B --> D_s D^0\pi^0 decays. The accuracy in the
extraction of CP violating phases is analyzed by performing a Monte Carlo
simulation of the decays, and the magnitude of possible new physics effects is
discussed. It is found that this represents a hopeful scenario for the search
of new physics.


title:
On the universality of cross sections of hadron-hadron(nuclei)
  collisions at superhigh energies

abstract:
  We analyze the pattern of the onset of complete absorption (the black limit)
in the high energy hadron-hadron collisions. The black limit arises due to the
hard and soft interaction dynamics as a function of the impact parameters b.
Both hard and soft mechanisms provide universal dependence of the partial
amplitude of the high energy elastic hadron- hadron scattering on the impact
parameter ${\bf b}$ and result in the radius of interaction proportional to
$\ln (s/s_0)$. We find that with increase of the collision energies hard
interactions lead to a faster increase of the impact parameter range where the
partial wave amplitudes are approaching the unitarity limit. Consequently, we
argue that at super high energies whenthe radius of hadronic interactions
significantly exceeds static radii of the interacting hadrons(nuclei) the ratio
of total cross sections of nucleon-nucleon, meson-nucleon, hadron-nucleus,
nucleus-nucleus collisions becomes equal to one. The same universality is also
expected for the structure functions of nuclei: $F_{2 A}(x,Q^2)/F_{2 N}(x,Q^2)>
\to 1$, at very small $x$, and for the ratio $>\sigma_{gamma
A}/>\sigma_{>\gamma p}\to 1$ at superhigh energies. We analyze how accounting
for the energy dependence of the interaction radii changes the geometry of
hadron-nucleus and nucleus-nucleus collisions, the energy dependence of total,
absorption and inelastic cross sections, the distribution over the number of
wounded nucleons in proton-nucleus collisions and find that these effects are
noticeable already for the LHC energies and even more so close to the
Greisen-Zatsepin-Kuzmin limit.


title: Various realizations of leptogenesis and neutrino mass constraints

abstract:
  Seven types of leptogenesis models which can lead to a successful explanation
of baryogenesis are presented. Emphasis is put on the conditions which need to
be fulfilled by the neutrino masses as well as by the heavy state masses. The
model dependence of these conditions is discussed.


title: Dark Matter Candidates in Supersymmetric Models

abstract:
  The status of the constrained minimal supersymmetric standard model (CMSSM)
will be discussed in light of our current understanding of the relic density
after WMAP. A global likelihood analysis of the model is performed including
data from direct Higgs searches, global fits to electroweak data, b to s gamma,
the anomalous magnetic moment of the muon, as well as the cosmological relic
density. Also considered are models which relax and further constrain the
CMSSM. Prospects for dark matter detection in colliders and cryogenic detectors
will be briefly discussed.


title:
Heavy-quark vacuum polarization: first two moments of the O(alphas^3
  nf^2) contribution

abstract:
  The vacuum polarization due to a virtual heavy quark pair and specifically
the coefficients of its Taylor expansion in the external momentum are closely
related to moments of the cross section for quark-antiquark pair production in
electron-positron annihilation. Relating measurement and theoretically
calculated Taylor coefficients, an accurate value for charm- and bottom-quark
mass can be derived, once corrections from perturbative QCD are sufficiently
well under control. Up to three-loop order these have been evaluated
previously. We now present a subset of four-loop contributions to the lowest
two moments, namely those from diagrams which involve two internal loops from
massive and massless fermions coupled to virtual gluons, hence of order
alphas^3 nf^2. The calculation demonstrates the applicability of Laporta's
algorithm to four-loop vacuum diagrams with both massive and massless
propagators and should be considered a first step towards the full evaluation
of the order alphas^3 contribution.


title: Revisiting the phenomenology on the QCD color dipole picture

abstract:
  Using the QCD dipole picture of the hard BFKL Pomeron, we perform a 3
parameter fit analysis of the recent inclusive structure function experimental
measurements at small-$x$ and intermediate $Q^2$. As a byproduct, the
longitudinal structure function and the gluon distribution are predicted
without further adjustments. The data description is quite reasonable, being
timely a further study using resummed NLO BFKL kernels along the lines of
recent theoretical developments.


title: Higher Charmonium

abstract:
  This contribution briefly discusses some new theoretical results for the
properties of charmonium, especially the "higher charmonium" states above
open-charm threshold. In particular we discuss the spectrum of states,
open-flavor strong decays, and the surprisingly large effects of virtual decay
loops of charmed meson pairs.


title: Neutralino Dark Matter Detection in Split Supersymmetry Scenarios

abstract:
  We study the phenomenology of neutralino dark matter within generic
supersymmetric scenarios where the Gaugino and Higgsino masses are much lighter
than the scalar soft breaking masses (Split Supersymmetry). We consider a
low-energy model-independent approach and show that the guidelines in the
definition of this general framework come from cosmology, which forces the
lightest neutralino to have a mass smaller than 2.2 TeV. The testability of the
framework is addressed by discussing all viable dark matter detection
techniques. Current data on cosmic rays antimatter, gamma-rays and on the
abundance of primordial 6Li already set significant constraints on the
parameter space. Complementarity among future direct detection experiments,
indirect searches for antimatter and with neutrino telescopes, and tests of the
theory at future accelerators, such as the LHC and a NLC, is highlighted. In
particular, we study in detail the regimes of Wino-Higgsino mixing and
Bino-Wino transition, which have been most often neglected in the past. We
emphasize that our analysis may apply to more general supersymmetric models
where scalar exchanges do not provide the dominant contribution to annihilation
rates.


title:
Neutralino Cold Dark Matter in a One Parameter Extension of the Minimal
  Supergravity Model

abstract:
  Within the minimal supergravity model (mSUGRA) framework, the expectation for
the relic density of neutralinos exceeds the WMAP determination unless
neutralinos a) have a significant higgsino component, b) have a mass close to
half that of a heavy Higgs boson, or c)can efficiently co-annihilate with a
charged or colored particle. Within a 1-parameter extension of the mSUGRA model
which includes non-universal Higgs masses, we show that agreement with the WMAP
data can be obtained over a wide range of mSUGRA parameters for scenarios a)
and b), so that the phenomenological implications may be much more diverse than
in mSUGRA. We show that direct and/or indirect detection of neutralino dark
matter should be possible at various current and planned facilities.


title:
Multiple Parton Scattering in Nuclei: Heavy Quark Energy Loss and
  Modified Fragmentation Functions

abstract:
  Multiple scattering, induced radiative energy loss and modified fragmentation
functions of a heavy quark in nuclear matter are studied within the framework
of generalized factorization in perturbative QCD. Modified heavy quark
fragmentation functions and energy loss are derived in detail with illustration
of the mass dependencies of the Landau-Pomeranchuk-Migdal interference effects
and heavy quark energy loss. Due to the quark mass dependence of the gluon
formation time, the nuclear size dependencies of nuclear modification of the
heavy quark fragmentation function and heavy quark energy loss are found to
change from a linear to a quadratic form when the initial energy and momentum
scale are increased relative to the quark mass. The radiative energy loss of
the heavy quark is also significantly suppressed due to limited cone of gluon
radiation imposed by the mass. Medium modification of the heavy quark
fragmentation functions is found to be limited to the large $z$ region due to
the form of heavy quark fragmentation functions in vacuum.


title:
Numerical precision radiative corrections to the Dalitz plot of light
  and heavy quark unpolarized baryon semileptonic decays. The cases Xi^0 \to
  Sigma^+ e \bar{\nu} and \Lambda_c^+ \to \Lambda e^+ \nu

abstract:
  We propose and discuss a numerical use of our previous precision results for
the radiative corrections to unpolarized spin one-half baryon semileptonic
decays, which is not compromised to fixing the form factors at prescribed
values. We present various crosschecks and comparisons with other results
available in the literature of such analytical radiative corrections. Our
analysis, however, is general and applies to all charge assignments to the
baryons allowed by heavy quarks. The procedure is exemplified with the
processes \Xi^0 \to \Sigma^+ e\bar{\nu} and \Lambda_c^+ \to \Lambda e^+ \nu.


title: The Physics of a Sextet Quark Sector

abstract:
  Electroweak symmetry breaking may be a consequence of color sextet quark
chiral symmetry breaking. A special solution of QCD is involved, with a
high-energy S-Matrix that can be constructed ``semi-perturbatively'' via the
chiral anomaly and reggeon diagrams. An infra-red fixed point and color
superconductivity are crucial components of the construction. Infinite momentum
physical states contain both quarks and a universal ``anomalous wee gluon''
component, and the spectrum is more limited than is required by confinement and
chiral symmetry breaking. The pomeron is approximately a regge pole and the
Critical Pomeron describes asymptotic cross-sections.
  The strong coupling of the pomeron to the electroweak sector could produce
large $x$ and $Q^2$ events at HERA, and vector boson pairs at Fermilab. Further
evidence for the sextet sector at Fermilab would be a large $E_T$ jet excess,
due in part to the non-evolution of ${\alpha}_s$, and other phenomena related
to the possibility that top quark production is due to the $\eta_6$.
  The sextet proton and neutron are the only new baryonic states. Sextet states
dominate high energy hadronic cross-sections and stable sextet neutrons could
produce both dark matter and ultra high energy cosmic rays. The cosmic ray
spectrum knee suggests the effective sextet threshold is between Fermilab and
LHC energies, with large cross-section effects expected at the LHC. Jet and
vector boson cross-sections will be very much larger than expected, and sextet
baryons should also be produced. Double pomeron produced states could provide
definitive evidence for the existence of the sextet sector in the initial low
luminosity running.


title: Are the pentaquark sum rules reliable?

abstract:
  We rewiew and scrutinize the existing mass determinations of the pentaquarks
from the exponential Laplace Sum Rules (LSR). We do not find any sum rule
window for extracting optimal and reliable results from the LSR, due to the
unusual slow convergence of the OPE and to the exceptional important role of
the QCD continuum into the spectral function in this channel. Instead, we use
in this channel,for the first time, Finite Energy Sum Rules (FESR), which
exhibit a nice stability in the QCD continuum threshold t_c, at which one can
extract, with a good accuracy, the mass of the lowest resonance. Including the
D=7, 9 condensate contributions in the OPE, we obtain M_Theta=(1513+- 114) MeV,
and the corresponding residue lambda_Theta^2= -(0.14-- 0.49)x 10^{-9} GeV^{12},
which favours the I=0, J=1/2, and negative parity S-wave interpretation of the
Theta (1540). However, our analysis indicates a degeneracy between the unmixed
I=0 and I=1 S-wave states. In the I=0, J=1/2, P-wave channel, we obtain, for
the P-resonance, M_P = (1.99+- 0.19) GeV and lambda_P= -(0.7--7.1)x 10^{-9}
GeV^{14}, which we expect to be discovered experimentally. Our results also
suggest that some intuitive choices of the continuum threshold used in the LSR
literature are inconsistent with the FESR results. Finally, a study of the
Theta-K-N coupling using a vertex sum rule shows that, for the I=0, S-wave
channel, the leading OPE contributions only start to order alpha_s^2 in the
chiral limit m_s=0, indicating that the Theta is very narrow.


title: Z-Scaling of Jet Production at Tevatron

abstract:
  New data on jet production obtained by the CDF and D0 Collaborations at the
Tevatron in Run II are analyzed in the framework of z-scaling. Properties of
data z-presentation are discussed. Physics interpretation of the scaling
function psi(z) as a probability density to produce a particle with the
formation length z is argued. It was shown that these experimental data confirm
z-scaling.


title: Jet Energy Density in Hadron-Hadron Collisions at High Energies

abstract:
  The average particle multiplicity density dN/deta is the dynamical quantity
which reflects some regularities of particle production in low-pT range. The
quantity is an important ingredient of z-scaling. Experimental results on
charged particle density are available for pp, pA and AA collisions while
experimental properties of the jet density are still an open question. The goal
of this work is to find the variable which will reflect the main features of
the jet production in low transverse energy range and play the role of the
scale factor for the scaling function psi(z) and variable z in data
z-presentation. The appropriate candidate is the variable we called "scaled jet
energy density". Scaled jet energy density is the probability to have a jet
with defined ET in defined xT and pseudorapidity regions. The PYTHIA6.2 Monte
Carlo generator is used for calculation of scaled jet energy density in
proton-proton collisions over a high energy range (sqrt s = 200-14000 GeV) and
at eta = 0. The properties of the new variable are discussed and sensitivity to
"physical scenarios" applied in the standard Monte Carlo generator is noted.
The results of scaled jet energy density at LHC energies are presented and
compared with predictions based on z-scaling.


title: Can we distinguish between h^{SM} and h^0 in split supersymmetry?

abstract:
  We investigate the possibility to distinguish between the Standard Model
Higgs boson and the lightest Higgs boson in Split Supersymmetry. We point out
that the best way to distinguish between these two Higgs bosons is through the
decay into two photons. It is shown that there are large differences of several
percent between the predictions for \Gamma(h\to\gamma\gamma) in the two models,
making possible the discrimination at future photon-photon colliders. Once the
charginos are discovered at the next generation of collider experiments, the
well defined predictions for the Higgs decay into two photons will become a
cross check to identify the light Higgs boson in Split Supersymmetry.


title: Nuclear Spin in Direct Dark Matter Search

abstract:
  The Weakly Interacting Massive Particles (WIMPs) are among the main
candidates for the relic dark matter (DM). The idea of the direct DM detection
relies on elastic in-dependent (SD) and spin-independent (SI) interaction of
WIMPs with target nuclei. The importance of the SD WIMP-nucleus interaction for
reliable DM detection is argued. The absolute lower bound for the detection
rate can naturally be due to SD interaction. An experiment aimed at detecting
DM with sensitivity higher than 10^{-5} event/day/kg should have a
non-zero-spin target.


title: Solar Models and Solar Neutrinos: Current Status

abstract:
  I provide a summary of the current theoretical knowledge of solar neutrino
fluxes as derived from precise solar models.


title: A Primer on Partial Wave Analysis

abstract:
  In the 90s of the last century high statistics experiments with fully
equipped 4$\pi$ detectors have lead to a better insight in the spectrum of
hadrons. In particular the finding of crypto-exotic and $J^{PC}$ exotic states
tremendously improved the experimental situation in meson spectroscopy. All
this was possible only with sophisticated analysis methods like the
decomposition of measured phase-space distribution into partial waves and to
express the partial waves in terms of complicated dynamical functions. This
paper gives an introduction about the concepts and formalisms involved.


title: Finite density effects in Hosotani mechanism and a vacuum gauge ball

abstract:
  We consider the finite density effects of the fermion with U(1) gauge
symmetry in Hosotani mechanism. We construct a vacuum gauge ball, a new kind of
non-topological soliton, and investigate their properties numerically. We find
the relations between the physical quantities.


title: Nonperturbative calculations in SU(3) gauge theory

abstract:
  An approximate technique for performing nonperturbative calculations in
quantum SU(3) gauge theory is presented. One aspect of this nonperturbative
method is the breaking down $SU(3) \to SU(2) + coset$. The procedure also uses
some aspects of an old method by Heisenberg to calculate the n-point Green's
function of strongly interacting, non-linear fields. Using these ideas we give
approximate calculations of the 2 and 4-points Green's functions.


title:
Formation of \eta'(958)-mesic nuclei and axial U_A(1) anomaly at finite
  density

abstract:
  We discuss the possibility to produce the bound states of the $\eta'(958)$
meson in nuclei theoretically. We calculate the formation cross sections of the
$\eta'$ bound states with the Green function method for ($\gamma$,p) reaction
and discuss the experimental feasibility at photon facilities like SPring-8. We
conclude that we can expect to observe resonance peaks in ($\gamma$,p) spectra
for the formation of $\eta'$ bound states and we can deduce new information on
$\eta'$ properties at finite density. These observations are believed to be
essential to know the possible mass shift of $\eta'$ and deduce new information
of the effective restoration of the chiral $U_A(1)$ anomaly in the nuclear
medium.


title: Hadronic Decays of Baryons in Point-Form Relativistic Quantum Mechanics

abstract:
  We discuss strong decays of baryon resonances within the concept of
relativistic constituent quark models. In particular, we follow a
Poincare-invariant approach along the point form of relativistic quantum
mechanics. Here, we focus on pionic decay modes of N and Delta resonances. It
is found that the covariant quark-model predictions calculated in the
point-form spectator model in general underestimate the experimental data
considerably. This points to a systematic defect in the used decay operator
and/or the baryon wave functions. From a detailed investigation of the
point-form decay operator it is seen that the requirement of translational
invariance implies effective many-body contributions. Furthermore, one has to
employ a normalization factor in the definition of the decay operator in the
point-form spectator model. Our analysis suggests that this normalization
factor is best chosen consistently with the one used for the electromagnetic
and axial current operators for elastic nucleon form factors.


title:
Virtual Compton Scattering at Low Energy and the Generalized
  Polarizabilities of the Nucleon o

abstract:
  Virtual Compton Scattering on the nucleon: $\gamma^* N \to \gamma N$ is a new
and rapidly developing field at low and high energies. This lecture is about
the low energy part, i.e. for energies in the $(\gamma p)$ center-of-mass
mainly up to the $\Delta(1232)$ resonance region. I review the concept of
Generalized Polarizabilities of the Nucleon, and the experiments dedicated to
their measurement.


title: Neutrino Masses from Cosmological Probes

abstract:
  There is a renewed interest in constraining the sum of the masses of the
three neutrino flavours by using cosmological measurements. Solar, atmospheric,
and reactor neutrino experiments have confirmed neutrino oscillations, implying
that neutrinos have non-zero mass, but without pinning down their absolute
masses. While it is established that the effect of light neutrinos on the
evolution of cosmic structure is small, the upper limits derived from
large-scale structure could help significantly to constrain the absolute scale
of the neutrino masses. It is also important to know the sum of neutrino masses
as it is degenerate with the values of other cosmological parameters, e.g. the
amplitude of fluctuations and the primordial spectral index. A summary of
cosmological neutrino mass limits is given. Current results from cosmology set
an upper limit on the sum of the neutrino masses of ~1 eV, somewhat depending
on the data sets used in the analyses and assumed priors on cosmological
parameters. It is important to emphasize that the total neutrino mass (`hot
dark matter') is derived assuming that the other components in the universe are
baryons, cold dark matter and dark energy. We assess the impact of neutrino
masses on the matter power spectrum, the cosmic microwave background, peculiar
velocities and gravitational lensing. We also discuss future methods to improve
the mass upper limits by an order of magnitude.


title: Direct detection of neutralino dark matter in the NMSSM

abstract:
  We address the direct detection of neutralino dark matter in the framework of
the Next-to-Minimal Supersymmetric Standard Model. We conduct a detailed
analysis of the parameter space, taking into account all the available
constraints from LEPII, and compute the neutralino-nucleon cross section. We
find that sizable values for the detection cross section, within the reach of
dark matter detectors, are attainable in this framework, and are associated
with the exchange of very light Higgses, $m_{h_1^0}\lesssim 70$ GeV, the latter
exhibiting a significant singlet composition.


title: Role of a_1(1260) resonance in multipion decays of light vector mesons

abstract:
  The contribution of the a_1(1260) meson to the amplitudes of the decays
rho(770) to 4 pi, omega(782) to 5 pi, and phi(1020) to 5 pi is analyzed in the
chiral model of pseudoscalar, vector, and axial vector mesons based on the
generalized hidden local symmetry added with the anomalous terms. The analysis
shows that inclusion of a_1 meson in the intermediate states results in
enhancement of the branching ratios of the above decays by the factor ranging
from 1.3 to 1.9 depending on the mass of a_1 meson ranging from 1.23 GeV to
m_{a_1}=m_rho sqrt{2}=1.09 GeV, the greater factor standing in case of lower
mass of the a_1.


title: Scalar mesons and Adler zeros

abstract:
  A simple unitarized quark-meson model, recently applied with success to light
and charmed scalar mesons, is shown to encompass Adler-type zeros in the
amplitude, due to the use of relativistic kinematics in the scattering sector.
These zeros turn out to be crucial for the description of the $K_0^*$(800)
resonance, as well as the new charmed scalar mesons $D_{s0}^*$(2317) and
$D_0^*$(2300). ~


title:
B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum
  Rules Revisited

abstract:
  We present an improved calculation of $B\to$ light vector form factors from
light-cone sum rules, including one-loop radiative corrections to twist-2 and
twist-3 contributions, and leading order twist-4 corrections. The total
theoretical uncertainty of our results at zero momentum transfer is typically
10% and can be improved, at least in part, by reducing the uncertainty of
hadronic input parameters. We present our results in a way which details the
dependence of the form factors on these parameters and facilitates the
incorporation of future updates of their values from e.g. lattice calculations.
We also give simple and easy-to-inplement parametrizations of the
$q^2$-dependence of the form factors which are valid in the full kinematical
regime of $q^2$.


title: Mass and decays of Brout-Englert-Higgs scalar with extra generations

abstract:
  The higher bound on the mass of the Brout-Englert-Higgs scalar boson (BEH
boson for brevity) arising from radiative corrections is not stable when the
Standard Model is extended to include non-decoupling particles. In particular
additional generation{s} of fermions allow for a heavier scalar. We investigate
how the decay branchings of scalar boson are affected by the opening of new
channels.


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

abstract:
  The different models of elastic nucleon scattering amplitude will be
discussed. Especially, the preference of the more general approach based on
eikonal model will be summarized in comparison with the West and Yennie
amplitude that played an important role in analyzing corresponding experimental
data in the past.


title:
QCD instantons in high energy diffractive scattering: Instanton model of
  Pomeron

abstract:
  The role of the QCD vacuum effects in high energy diffractive quark-quark and
quark-antiquark scattering is studied with the Instanton Liquid Model. The
special attention is given to the problem of formation of the soft Pomeron. We
show that in the leading approximation in instanton density the $C-$odd
instanton contribution to the diffractive amplitude is suppressed as $1/s$
compared to the $C-$even one.


title: Two-Loop Static QCD Potential for General Colour State

abstract:
  In this letter, we extend the known results for the QCD potential between a
static quark and its antiquark by computing the two-loop corrections to the
colour-octet state.


title: Nonlinear evolution equations in QCD

abstract:
  The following lectures are an introduction to the phenomena of partonic
saturation and nonlinear evolution equations in Quantum Chromodynamics. After a
short introduction to the linear evolution, the problems of unitarity bound and
parton saturation are discussed. The nonlinear Balitsky-Kovchegov evolution
equation in the high energy limit is introduced, and the progress towards the
understanding of the properties of its solution is reviewed. We discuss the
concepts of the saturation scale, geometrical scaling and the lack of the
infrared diffusion. Finally, we give a brief summary of current theoretical
developments which extend beyond the Balitsky-Kovchegov equation.


title: Evidence for Quark Spin-flip in Pomeron Exchange

abstract:
  Spin-parity analyses of the $\omega\pi$ system in the reaction $\gamma p \to
(\omega\pi) p$ for photon laboratory energies from 20 to 70 GeV have shown that
production of the $J^P=1^+$ $b_1(1235)$ meson dominates, with a $J^P=1^-$
background at the level of 20%. Using vector-meson dominance arguments, this
background is shown to be consistent with the data on $e^+e^- \to \omega\pi$.
The energy dependence of the data imply that the mechanism is a combination of
Reggeon and Pomeron exchange. Assuming that the latter is relevant only for the
$J^P = 1^-$ component and extrapolating to W=200 GeV, it is argued that this
accounts for most of the preliminary $\omega\pi$ signal observed by the H1
Collaboration in the same reaction. A residual peak can be ascribed to the
$b_1(1235)$, which requires a quark spin-flip from Pomeron exchange. Precisely
the same mechanism occurs in the reaction $\pi p \to a_1(1260) p$.


title: The B -> pi K Puzzle and New Physics

abstract:
  The present B -> pi K data is studied in the context of the standard model
(SM) and with new physics (NP). We confirm that the SM has difficulties
explaining the B -> pi K measurements. By adopting an effective-lagrangian
parametrization of NP effects, we are able to rule out several classes of NP.
Our model-independent analysis shows that the B -> pi K data can be
accommodated by NP in the electroweak penguin sector.


title: Warped Phenomenology of Higher-Derivative Gravity

abstract:
  We examine the phenomenological implications at colliders for the existence
of higher-derivative gravity terms as extensions to the Randall-Sundrum model.
Such terms are expected to arise on rather general grounds, e.g., from string
theory. In 5-d, if we demand that the theory be unitary and ghost free, these
new contributions to the bulk action are uniquely of the Gauss-Bonnet form. We
demonstrate that the usual expectations for the production cross section and
detailed properties of graviton Kaluza-Klein resonances and TeV-scale black
holes can be substantially altered by existence of these additional
contributions. It is shown that measurements at future colliders will be highly
sensitive to the presence of such terms.


title:
Laurent series expansion of a class of massive scalar one-loop integrals
  to ${\cal O}(\ep^2)

abstract:
  We use dimensional regularization to calculate the ${\cal O}(\ep^2)$
expansion of all scalar one-loop one-, two-, three- and four-point integrals
that are needed in the calculation of hadronic heavy quark production. The
Laurent series up to ${\cal O}(\ep^2)$ is needed as input to that part of the
NNLO corrections to heavy flavor production at hadron colliders where the
one-loop integrals appear in the loop-by-loop contributions. The four-point
integrals are the most complicated. The ${\cal O}(\ep^2)$ expansion of the
three- and four-point integrals contains in general polylogarithms up to ${\rm
Li}_4$ and functions related to multiple polylogarithms of maximal weight and
depth four.


title: The Minimal Composite Higgs Model

abstract:
  We study the idea of a composite Higgs in the framework of a five-dimensional
AdS theory. We present the minimal model of the Higgs as a pseudo-Goldstone
boson in which electroweak symmetry is broken dynamically via top loop effects,
all flavour problems are solved, and contributions to electroweak precision
observables are below experimental bounds. Since the 5D theory is weakly
coupled, we are able to fully determine the Higgs potential and other physical
quantities. The lightest resonances are expected to have a mass around 2 TeV
and should be discovered at the LHC. The top sector is mostly composite and
deviations from Standard Model couplings are expected.


title:
Neutrino Masses in the Effective Rank-5 Subgroups of E_6 I:
  Non-supersymmetric Case

abstract:
  The neutral fermion sectors of E_6-inspired low energy models, in particular
the Alternative Left-Right and Inert models, are considered in detail within
the non-supersymmetric scenario. We show that in their simplest form, these
models always predict, for each generation, the lightest neutrino to be an
SU(2)_L singlet, as well as two extra neutrinos with masses of the order of the
up-quark mass. In order to recover Standard Model phenomenology, additional
assumptions in the form of discrete symmetries and/or new interactions are
needed. These are classified as the Discrete Symmetry (DS), Higher Dimensional
Operators (HDO), and Additional Neutral Fermion (ANF) methods. The DS method
can solve the problem, but requires additional Higgs doublets that do not get
vacuum expectation values. The HDO method predicts no sterile neutrino, and
that the active neutrinos mix with a heavy isodoublet neutrino, thus slightly
suppressing the couplings of active neutrinos, with interesting
phenomenological implications. The ANF method also predicts this suppression,
and also naturally includes one or more "sterile" neutrinos. This scenario
allows the existence of sterile neutrino(s) in either a 3+1 or 2+2 structure at
low energies, which are favored by the LSND result.


title: Space-time evolution of a condensate in the interaction representation

abstract:
  The space-time evolution of an inhomogeneous as well as homogeneous
condensate is studied. We use the $ \lambda \phi^4 $ model and adopt the
interaction representation in which the particle picture of the field $\phi$
with mass $m$ is definitely obtained. As the initial condition, a coherent
state is assumed. In the case of the homogeneous condensate, the amplitude of
it grows continuously with time and the perturbative calculation breaks down
for large time. On the other hand, in the case of the inhomogeneous condensate
with a finite initial size $\sim R$, the behavior of it is so different from
that of the homogeneous one. For $0< t < m R^2/2 $, the growth of the amplitude
of the inhomogeneous condensate at the origin $ ({\boldsymbol x}={\bf 0}) $ is
slowed down compared with that of the homogeneous one, and the contribution of
the interaction term $ (\lambda /4) :\phi^4: $ is restricted to the small
region around the origin of the condensate. For the late time, $ t > m R^2/2 $,
the condensate spreads into space.


title:
Baryon masses and nucleon sigma terms in manifestly Lorentz-invariant
  baryon chiral perturbation theory

abstract:
  We discuss the masses of the ground state baryon octet and the nucleon sigma
terms in the framework of manifestly Lorentz-invariant baryon chiral
perturbation theory. In order to obtain a consistent power counting for
renormalized diagrams the extended on-mass-shell renormalization scheme is
applied.


title:
Systematization of tensor mesons and the determination of the $2^{++}$
  glueball

abstract:
  It is shown that new data on the $(J^{PC}=2^{++})$-resonances in the mass
range $M\sim1700-2400 $MeV support the linearity of the $(n,M^2)$-trajectories,
where $n$ is the radial quantum number of quark--antiquark state. In this way
all vacancies for the isoscalar tensor $q\bar q$-mesons in the range up to 2450
MeV are filled in. This allows one to fix the broad $f_2$-state with
$M=2000\pm30 $MeV and $\Gamma=530\pm40 $MeV as the lowest tensor glueball. PACS
numbers: 14.40.-n, 12.38.-t, 12.39.-Mk


title: A Cannonball Model of Cosmic Rays

abstract:
  I outline a "Cannon-Ball" model of Cosmic Rays in which their distribution in
the Galaxy, their total "luminosity", the broken power-law spectra with their
observed slopes, the position of the knee(s) and ankle(s), and the alleged
variations of composition with energy are all explained in terms of simple and
"standard" physics.


title: Chemical equilibration due to heavy Hagedorn states

abstract:
  A scenario of heavy resonances, called massive Hagedorn states, is proposed
which exhibits a fast ($t\approx 1$ fm/c) chemical equilibration of (strange)
baryons and anti-baryons at the QCD critical temperature $T_c$. For
relativistic heavy ion collisions this scenario predicts that hadronization is
followed by a brief expansion phase during which the equilibration rate is
higher than the expansion rate, so that baryons and antibaryons reach chemical
equilibrium before chemical freeze-out occurs.


title:
Electromagnetic interactions in nucleus-nucleus and proton-proton
  collisions

abstract:
  The strong electromagnetic fields associated with ultra-relativistic protons
and nuclei correspond to an equivalent flux of photons. At the future Large
Hadron Collider at CERN, the corresponding photon-nucleon center of mass
energies will be higher than at any existing accelerator. The experimental and
theoretical aspects of particle production in electromagnetic interactions at
hadron colliders are reviewed.


title: Maximizing the spin correlation of top quark pairs produced at the LHC

abstract:
  The measurement of top quark spin correlation is an important tool for
precise studies of top quark interactions. In this letter I construct a
quantization axis maximizing the spin correlation at the LHC within the
Standard Model. Using this axis a spin correlation of 48% or even more, on
applying additional cuts, can be reached. This represents a significant
improvement compared to the helicity bases studied thus far.


title: Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)

abstract:
  Heavy-light diquarks can be the building blocks of a rich spectrum of states
which can accommodate some of the newly observed charmonium-like resonances not
fitting a pure c-cbar assignment. We examine this possibility for hidden and
open charm diquark-antidiquark states deducing spectra from constituent quark
masses and spin-spin interactions. Taking the X(3872) as input we predict the
existence of a 2++ state that can be associated to the X(3940) observed by
Belle and re-examine the state claimed by SELEX, X(2632). The possible
assignment of the previously discovered states D_s(2317) and D_s(2457) is
discussed. We predict X(3872) to be made of two components with a mass
difference related to (m_u-m_d) and discuss the production of X(3872) and of
its charged partner X^(+-) in the weak decays of B^(+,0).


title: Theory of Neutrinos

abstract:
  After a brief overview of the present knowledge of neutrino masses and
mixing, we summarize what can be learned about physics beyond the standard
model from the various proposed neutrino experiments. We also comment on the
impact of the experiments on our understanding of the origin of the
matter-antimatter asymmetry of the Universe as well as what can be learned from
some experiments outside the domain of neutrinos.


title: Identifying the neutrino mass hierarchy with supernova neutrinos

abstract:
  We review how a high-statistics observation of the neutrino signal from a
future galactic core-collapse supernova (SN) may be used to discriminate
between different neutrino mixing scenarios. Most SN neutrinos are emitted in
the accretion and cooling phase, during which the flavor-dependent differences
of the emitted neutrino spectra are small and rather uncertain. Therefore the
discrimination between neutrino mixing scenarios using these neutrinos should
rely on observables independent of the SN neutrino spectra. We discuss two
complementary methods that allow for the positive identification of the mass
hierarchy without knowledge of the emitted neutrino fluxes, provided that the
13-mixing angle is large, $\sin^2\theta_{13}\gg 10^{-5}$. These two approaches
are the observation of modulations in the neutrino spectra by Earth matter
effects or by the passage of shock waves through the SN envelope. If the value
of the 13-mixing angle is unknown, using additionally the information encoded
in the prompt neutronization $\nu_e$ burst--a robust feature found in all
modern SN simulations--can be sufficient to fix both the neutrino hierarchy and
to decide whether $\theta_{13}$ is ``small'' or ``large.''


title: Light-Front QCD

abstract:
  In these lectures, I survey a number of applications of light-front methods
to hadron and nuclear physics phenomenology and dynamics, Light-front
Fock-state wavefunctions provide a frame-independent representation of hadrons
in terms of their fundamental quark and gluon degrees of freedom.
Nonperturbative methods for computing LFWFs in QCD are discussed, including
string/gauge duality which predicts the power-law fall-off at high momentum
transfer of light-front Fock-state hadronic wavefunctions with an arbitrary
number of constituents and orbital angular momentum. The AdS/CFT correspondence
has important implications for hadron phenomenology in the conformal limit,
including an all-orders derivation of counting rules for exclusive processes.
One can also compute the hadronic spectrum of near-conformal QCD assuming a
truncated AdS/CFT space. The quantum fluctuations represented by the
light-front Fock expansion leads to novel QCD phenomena such as color
transparency, intrinsic heavy quark distributions, diffractive dissociation,
and hidden-color components of nuclear wavefunctions. A new test of hidden
color in deuteron photodisintegration is proposed. The origin of leading-twist
phenomena such as the diffractive component of deep inelastic scattering,
single-spin asymmetries, nuclear shadowing and antishadowing is also discussed;
these phenomena cannot be described by light-front wavefunctions of the target
computed in isolation. Part of the anomalous NuTeV results for the weak mixing
angle could be due to the non-universality of nuclear antishadowing for charged
and neutral currents.


title: Reheat temperature in supersymmetric hybrid inflation models

abstract:
  The allowed range of parameters for supersymmetric hybrid inflation and its
extensions are investigated. The lower bound on the reheat temperature T_r in
these models with hierarchical right handed neutrinos is found to be 3*10^7
GeV. (T_r as low as 100 GeV is possible for quasi degenerate right handed
neutrinos.) We also present revised estimates for the scalar spectral index and
the symmetry breaking scale associated with inflation.


title:
How heavy can the Fermions in Split Susy be? A study on Gravitino and
  Extradimensional LSP

abstract:
  In recently introduced Split Susy theories, in which the scale of Susy
breaking is very high, the requirement that the relic abundance of the Lightest
SuperPartner (LSP) provides the Dark Matter of the Universe leads to the
prediction of fermionic superpartners around the weak scale. This is no longer
obviously the case if the LSP is a hidden sector field, such as a Gravitino or
an other hidden sector fermion, so, it is interesting to study this scenario.
We consider the case in which the Next-Lightest SuperPartner (NLSP) freezes out
with its thermal relic abundance, and then it decays to the LSP. We use the
constraints from BBN and CMB, together with the requirement of attaining Gauge
Coupling Unification and that the LSP abundance provides the Dark Matter of the
Universe, to infer the allowed superpartner spectrum. As very good news for a
possible detaction of Split Susy at LHC, we find that if the Gravitino is the
LSP, than the only allowed NLSP has to be very purely photino like. In this
case, a photino from 700 GeV to 5 TeV is allowed, which is difficult to test at
LHC. We also study the case where the LSP is given by a light fermion in the
hidden sector which is naturally present in Susy breaking in Extra Dimensions.
We find that, in this case, a generic NLSP is allowed to be in the range 1-20
TeV, while a Bino NLSP can be as light as tens of GeV.


title:
Constraints on neutrino masses from a Galactic supernova neutrino signal
  at present and future detectors

abstract:
  We study the constraints on neutrino masses that could be derived from the
observation of a Galactic supernova neutrino signal with present and future
neutrino detectors. Our analysis is based on a recently proposed method that
uses the full statistics of neutrino events and does not depend on particular
astrophysical assumptions. The statistical approach, originally justified
mainly in terms of intuitive reasoning, is put on a more solid basis by means
of Bayesian inference reasoning. Theoretical uncertainties in the neutrino
signal time profiles are estimated by applying the method to two widely
different supernova models. Present detectors can reach a sensitivity down to 1
eV. This is better than limits from tritium $\beta$-decay experiments,
competitive with the most conservative results from neutrinoless double
$\beta$-decay, less precise but less dependent from prior assumptions than
cosmological bounds. Future megaton water Cerencov detectors will allow for
about a factor of two improvement. However, they will not be competitive with
the next generation of laboratory experiments.


title: Suppressing Proton Decay in the Minimal SO(10) Model

abstract:
  We show that in a class of minimal supersymmetric SO(10) models which have
been found to be quite successful in predicting neutrino mixings, all proton
decay modes can be suppressed by a particular choice of Yukawa textures. This
suppression works for contributions from both left and right operators for
nucleon decay and for arbitrary \tan\beta. The required texture not only fits
all lepton and quark masses as well as CKM parameters but it also predicts
neutrino mixing parameter U_e3 and Dirac CP phase \sin|\delta_MNS| to be
0.07-0.09 and 0.3-0.7 respectively. We also discuss the relation between the
GUT symmetry breaking parameters for the origin of these textures.


title:
Relativistic resonances: Their masses, widths, lifetimes, superposition,
  and causal evolution

abstract:
  Whether one starts form the analytic S-matrix definition or the requirement
of gauge parameter independence in renormalization theory, a relativistic
resonance is given by a pole at a complex value s of energy squared. The
complex number s does not define the mass and width separately and this
definition does not lead to interfering Breit-Wigner if two or more resonances
are involved. To accomplish both we invoke the decaying particle aspect of a
resonance and associate to each pole a space of relativistic Gamow kets which
transform irreducibly under causal Poincare transformations. A Gamow state has
an exponential time evolution and one can choose of the many possible width
parameters, that parameter as the width of the relativistic resonance which
equals the inverse lifetime. This uniquely defines the mass and width
parameters for a relativistic resonance. Two or more poles in the same partial
wave are given by the sum of Breit-Wigners in the scattering amplitude and by a
superposition of Gamow vectors with each Gamow vector corresponding to one
Breit-Wigner. In addition to the sum of Breit-Wigners the scattering amplitude
contains a background amplitude representing direct production of the final
state (contact terms).This contact amplitude is associated to a background
vector which is a continuous superposition of Lippmann-Schwinger states.
Omitting this continuum gives the Weisskopf-Wigner approximation.


title: Analysis of B_d^0 -> phi K^{*0} decay mode with supersymmetry

abstract:
  Motivated by the recent measurement of low longitudinal polarization fraction
in the decay mode $\B \to \phi K^{*0}$, which appears not to be in agreement
with the standard model expectation, we analyze this mode in the minimal
supersymmetric standard model with mass insertion approximation. Within the
standard model, with factorization approximation, the longitudinal polarization
is expected to be $f_L \sim 1-{\cal O}(1/m_b^2)$. We find that this anomaly can
be explained in the minimal supersymmetric standard model with either $LR$ or
$RL$ mass insertion approximation.


title:
Studying Electroweak Baryogenesis using Evenisation and the Wigner
  Formalism

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 and the Wigner formalism for a Lagrangian with the
phase of the complex fermion mass rotated away. We obtain the energy, velocity
and force for the particles in the presence of the Higgs bubble wall. Our
results using both methods are in agreement. This indicates the robustness of
evenisation as a method to study quantum corrections to the velocity and force
for particles in the Higgs wall during the electroweak phase transition. We
also derive the transport equations from the zeroth and first moment of the
kinetic equation.


title: Lagrangian formalism of gravity in the Randall-Sundrum model

abstract:
  We derive the effective Lagrangian of the physical four-dimensional fields in
the Randall-Sundrum (RS) model, and use this to calculate the Newtonian
gravitational potential between two point sources on the brane. The effect of
the radion is emphasized, and it is shown to disappear when the hidden brane is
taken to infinity, i.e. when we only have one brane. As a preliminary, we
derive the corresponding Lagrangian in the simpler geometry of a flat spacetime
with one extra dimension compactified on a torus. We also study the gauge
invariance of the theory, and note that the massless vector field that is
present for the torus disappears in the RS model because of the orbifold
symmetry.


title: Soft Wilson lines in soft-collinear effective theory

abstract:
  The effects of the soft gluon emission in hard scattering processes at the
phase boundary are resummed in the soft-collinear effective theory (SCET). In
SCET, the soft gluon emission is decoupled from the energetic collinear part,
and is obtained by the vacuum expectation value of the soft Wilson-line
operator. The form of the soft Wilson lines is universal in deep inelastic
scattering, in the Drell-Yan process, in the jet production from e+e-
collisions, and in the gamma* gamma* -> pi0 process, but its analytic structure
is slightly different in each process. The anomalous dimensions of the soft
Wilson-line operators for these processes are computed along the light-like
path at leading order in SCET and to first order in alpha_s, and the
renormalization group behavior of the soft Wilson lines is discussed.


title:
Uncertainties on Central Exclusive Scalar Luminosities from the
  unintegrated gluon distributions

abstract:
  In a previous report we used the Linked Dipole Chain model unintegrated gluon
densities to investigate the uncertainties in the predictions for central
exclusive production of scalars at hadron colliders. Here we expand this
investigation by also looking at other parameterizations of the unintegrated
gluon density, and look in more detail on the behavior of these at small k_T.
We confirm our conclusions that the luminosity function for central exclusive
production is very sensitive to this behavior. However, we also conclude that
the available densities based on the CCFM and LDC evolutions are not
constrained enough to give reliable predictions even for inclusive Higgs
production at the LHC.


title:
Relativistically invariant analysis of polarization effects in exclusive
  deuteron electrodisintegration process

abstract:
  A general formalism for the calculation of the differential cross section and
polarization observables, for the process of deuteron electrodisintegration, is
developed in the framework of relativistic impulse approximation. A detailed
analysis of the general structure of the differential cross section and
polarization observables for the $e^-+d\to e^-+n+p$ reaction is derived, using
the formalism of the structure functions. The obtained expressions have a
general nature and they hold in the one--photon--exchange mechanism, assuming
P--invariance of the hadron electromagnetic interaction. The model of
relativistic impulse approximation is introduced and the final state
interaction is taken into account by means of the unitarization of the helicity
amplitudes. A detailed description of the unitarization procedure is also
presented.
  Using different parametrizations of the deuteron wave functions, the
following polarization observables are calculated in the kinematical region of
quasi--elastic deuteron electrodisintegration: the asymmetry for the scattering
of longitudinally polarized electrons on a polarized deuteron target, the
proton and neutron polarizations (for longitudinally polarized electron beam or
vector--polarized deuteron target). The sensitivity to the neutron electric
form factor is also thorougly investigated.
  The predictions of the model are compared with the results of recent
polarization measurements and a good agreement with the existing experimental
data has been obtained.


title: Higgsless Deconstruction Without Boundary Condition

abstract:
  Deconstruction is a powerful means to explore the rich dynamics of gauge
theories in four and higher dimensions. We demonstrate that gauge symmetry
breaking in a compactified higher dimensional theory can be formulated via
deconstructed 4D moose theory with {\it spontaneous symmetry breaking} and {\it
without boundary condition.} The proper higher-D boundary conditions are
automatically induced in the continuum limit rather than being imposed. We
identify and analyze the moose theories which exhibit {\it delayed unitarity
violation} (effective unitarity) as a {\it collective effect} of many gauge
groups, without resorting to any known 5D geometry. Relevant phenomenological
constraints are also addressed.


title:
On pion correction to quark mass in next-leading order of mean-field
  expansion in NJL model

abstract:
  The correction to quark mass are calculated in Nambu-Jona-Lasinio model with
4-dimensional cutoff regularization and with dimensional-analytical
regularization in the next-to-leading order of mean-field expansion. The
analytical calculations show that the pion correction to quark mass is equal to
zero. Comparing the results in both regularizations one can signify that the
zero value of the pion correction to quark mass is the
regularization-independent fact of Nambu-Jona-Lasinio model.


title: B-> phi K^(*) CPV/Polarization, and Collider Implications

abstract:
  The hint for BSM CP violation in B-> phi K_S is now more confused, but the
phi K^* polarization anomaly seems real. We present a picture based on a
flavor-mixed, right-handed "strange-beauty" squark \widetilde{sb}_{1R}, driven
light by the large \tilde s_R-\tilde b_R squark flavor mixing, which carries a
unique new CP phase. The \widetilde{sb}_{1R} could impact on S_{phi K_S} (or
alternatively S_{eta^\prime K_S}), B_s mixing, \sin2Phi_{B_s},
S_{K_S\pi^0\gamma} and other b-> s transitions, and can be searched for
directly at the Tevatron. Whether SM or BSM, a heuristic model is given where
transverse phi K^* polarization descends from the gluon helicity of on-shell
b-> sg.


title: $\Lambda_b$ Decays into $\Lambda$-Vector

abstract:
  A complete study of the angular distributions of the processes, $\Lambda_b
\to {\Lambda} V(1^-)$, with $\Lambda \to p {\pi}^-$ and $V (J/{\Psi}) \to
{\ell}^+ {\ell}^-$ or $V ({\rho}^0,\omega) \to {\pi}^+ {\pi}^-,$ is performed.
  Emphasis is put on the initial $\Lambda_b$ polarization produced in the
proton-proton collisions. The polarization density-matrices as well as angular
distributions are derived and help to construct T-odd observables which allow
us to perform tests of both Time-Reversal and CP violation.


title:
Light-cone path integral approach to the induced radiation in QED and
  QCD: basic concepts and recent applications

abstract:
  I discuss the basic ideas of the light-cone path integral approach to the
induced radiation in QED and QCD and recent applications to the induced parton
energy loss.


title: Resummation of Large Logarithms within the Method of Effective Charges

abstract:
  We show how the resummation of large logarithms can be incorporated into the
method of effective charges. As an example, we apply this approach to the event
shape variables thrust and heavy jet mass in e+e- annihilation. We find that,
although the resummation creates problems with the behaviour of the efective
charge in the 2-jet limit, smaller power corrections are required to fit the
data compared to the standard approach. In addition, increasing the logarithmic
accuracy reduces the size of the power corrections further. We also consider
``predicting'' the sub-leading logarithms in the MSbar scheme, obtaining
surprisingly good results for the first few NLL terms.


title: Universality of the EMC Effect

abstract:
  Using effective field theory, we investigate nuclear modification of nucleon
parton distributions (for example, the EMC effect). We show that the
universality of the shape distortion in nuclear parton distributions (the
factorisation of the Bjorken x and atomic number (A) dependence) is model
independent and emerges naturally in effective field theory. We then extend our
analysis to study the analogous nuclear modifications in isospin and spin
dependent parton distributions and generalised parton distributions.


title: A New Method for Determining gamma from B-> pi pi Decays

abstract:
  Factorization based on the soft-collinear effective theory (SCET) can be used
to reduce the number of hadronic parameters in an isospin analysis of B-> pi pi
decays by one. This gives a theoretically precise method for determining the CP
violating phase gamma by fitting to the B-> pi pi data without C_{pi0 pi0}.
SCET predicts that gamma lies close to the isospin bounds. With the current
world averages we find gamma=75^o \pm 2^o {}^{+9^o}_{-13^o}, where the
uncertainties are theoretical, then experimental.


title: The Boltzmann Equation in Classical and Quantum Field Theory

abstract:
  Improving upon the previous treatment by Mueller and Son, we derive the
Boltzmann equation that results from a classical scalar field theory. This is
obtained by starting from the corresponding quantum field theory and taking the
classical limit with particular emphasis on the path integral and perturbation
theory. A previously overlooked Van-Vleck determinant is shown to control the
tadpole type of self-energy that can still appear in the classical perturbation
theory. Further comments on the validity of the approximations and possible
applications are also given.


title: Diagnostic Potential of Cosmic-Neutrino Absorption Spectroscopy

abstract:
  Annihilation of extremely energetic cosmic neutrinos on the relic-neutrino
background can give rise to absorption lines at energies corresponding to
formation of the electroweak gauge boson $Z^{0}$. The positions of the
absorption dips are set by the masses of the relic neutrinos. Suitably intense
sources of extremely energetic ($10^{21}$ -- $10^{25}$-eV) cosmic neutrinos
might therefore enable the determination of the absolute neutrino masses and
the flavor composition of the mass eigenstates. Several factors--other than
neutrino mass and composition--distort the absorption lines, however. We
analyze the influence of the time-evolution of the relic-neutrino density and
the consequences of neutrino decay. We consider the sensitivity of the
lineshape to the age and character of extremely energetic neutrino sources, and
to the thermal history of the Universe, reflected in the expansion rate. We
take into account Fermi motion arising from the thermal distribution of the
relic-neutrino gas. We also note the implications of Dirac vs. Majorana relics,
and briefly consider unconventional neutrino histories. We ask what kinds of
external information would enhance the potential of cosmic-neutrino absorption
spectroscopy, and estimate the sensitivity required to make the technique a
reality.


title:
Phenomenological analysis of supersymmetric $\gs$--models on coset
  spaces SO(10)/U(5) and E_6/[SO(10)\times U(1)]

abstract:
  We discuss some phenomenological aspects of gauged supersymmetric
$\gs$--models on homogeneous coset-spaces $\ESO$ and $SO(10)/U(5)$ which are
some of the most interesting for phenomenology. We investigate in detail the
vacuum configurations of these models, and study the resulting consequences for
supersymmetry breaking and breaking of the internal symmetry. Some
supersymmetric minima for both models with gauged full isometry groups $E_6$
and SO(10) are physically problematic as the Kaehler metric becomes singular
and hence the kinetic terms of the Goldstone boson multiplets vanish. This
leads us to introduce recently proposed soft supersymmetry-breaking mass terms
which displace the minimum away from the singular point. A non-singular Kaehler
metric breaks the linear subgroup $SO(10)\times U(1)$ of the $E_6$ model
spontaneously. The particle spectrum of all these different models is computed.


title:
Electron Spectra for $D$ and $B$ Meson Semi-leptonic Decays at RHIC from
  PYTHIA with Modified Heavy Quark Fragmentation

abstract:
  We present a study of charmed hadron transverse momentum distribution from
p+p collisions at $\sqrt{s_{NN}}=200$ GeV using the PYTHIA Monte Carlo event
generator. The PHENIX tuned PYTHIA parameter set based on electron measurements
alone yields a $D$ meson $p_{T}$ distribution softer than the preliminary STAR
experimental data from d+Au collisions scaled by the number of binary
collisions. In order to match the STAR $p_{T}$ spectrum, the higher order QCD
effects in PYTHIA have to be taken into account, and a fragmentation function
of charm quarks much harder than the default Peterson function is needed.
Electrons from beauty quark semi-leptonic decays are found significantly below
the contribution from charm quark decays for the $p_{T}$ region up to 8 GeV/c
in our modified fragmentation scheme, while in the default fragmentation scheme
the B decay electrons dominate at $p_{T}$ above 4 GeV/c. We propose an
experimental measurement of electron and charged hadron correlation to
differentiate these scenarios.


title:
Probing SO(10) symmetry breaking patterns through sfermion mass
  relations

abstract:
  We consider supersymmetric SO(10) grand unification where the unified gauge
group can break to the Standard Model gauge group through different chains. The
breaking of SO(10) necessarily involves the reduction of the rank, and
consequent generation of non-universal supersymmetry breaking scalar mass
terms. We derive squark and slepton mass relations, taking into account these
non-universal contributions to the sfermion masses, which can help distinguish
between the different chains through which the SO(10) gauge group breaks to the
Standard Model gauge group. We then study some implications of these
non-universal supersymmetry breaking scalar masses for the low energy
phenomenology.


title:
Parametrization of Neutrino Mixing Matrix in Tri-bimaximal Mixing
  Pattern

abstract:
  The neutrino mixing matrix is expanded in powers of a small parameter
$\lambda$ in tri-bimaximal mixing pattern. We also present some applications of
this parametrization, such as to the expression of the Jarlskog parameter $J$.
Comparing with other parametrizations (such as the parametrization in bimaximal
mixing pattern), this parametrization converges more quickly, but is of less
symmetry.


title: Triquark correlations and pentaquarks in a QCD sum rule approach

abstract:
  The role of quark correlations in the description of hadron dynamics in many
domains of physics, from low energy dynamics to very hot(dense) systems, is
being appreciated. Strong correlations of two quarks (diquark) have been widely
investigated in this respect. Recently, we have proposed a dynamical scheme to
describe the $\Theta^+$ pentaquark in which also three quark correlations
(triquark) were instrumental in producing a low mass exotic state. We perform a
study, within the QCD sum rule approach including OPE and direct instanton
contributions, of triquark correlations and obtain two quasi-bound light
$ud\bar{s}$ color quark clusters of 800 MeV and 930 MeV respectively.


title: Review of Heavy Quark Physics - theory

abstract:
  Recent progress in the theory of B-meson decays is reviewed with emphasis on
the aspects related to the B-factory data.


title:
Pion, sigma-meson and diquarks in the 2SC phase of dense cold quark
  matter

abstract:
  The spectrum of meson and diquark excitations of dense cold quark matter is
investigated in the framework of a Nambu--Jona-Lasinio type model for light
quarks of two flavors. It was found out that a first order phase transition
occurs when the chemical potential $\mu$ exceeds the critical value $\mu_c=350$
MeV. Above $\mu_c$, the diquark condensate $\vev{qq}$ forms, breaking the color
symmetry of strong interaction. The masses of $\pi$- and $\sigma$-mesons are
shown to grow with the chemical potential $\mu$ in the color-superconducting
phase, but the mesons themselves become almost stable particles due to the Mott
effect. Moreover, we have found in this phase an abnormal number of three,
instead of five, Nambu--Goldstone bosons, together with a color doublet of
light stable diquark modes and a color-singlet heavy diquark resonance with the
mass $\sim$ 1100 MeV. In the color symmetric phase, \textit{i.e.} for $\mu
<\mu_c$, the splitting between the masses of diquarks and antidiquarks is shown
to arise if $\mu\ne 0$, contrary to the case of vanishing chemical potential,
$\mu = 0$, where the mass spectrum of antidiquarks and diquarks is degenerate
at the value $\sim$ 700 MeV.


title: Radiative Ke3 decays revisited

abstract:
  Motivated by recent experimental results and ongoing measurements, we review
the chiral perturbation theory prediction for radiative Ke3 decays (neutral
kaons). Special emphasis is given on the stability of the inner
bremsstrahlung-dominated relative branching ratio vs. the Ke3 form factors, and
on the separation of the structure dependent amplitude in differential
distributions over the phase space. For the structure dependent terms, an
assessment of the order p^6 corrections is given. In particular, a full
next-to-leading order calculation of the axial component is performed. The
experimental analysis of the photon energy spectrum is discussed, and other
potentially useful distributions are introduced.


title: An angular distribution analysis of $\Lambda_b$ decays

abstract:
  A study of the angular distributions of the processes $\Lambda_b \to
{\Lambda} V(1^-)$ with $V ({J/\Psi,\rho}^0)$ is performed. Emphasis is put on
the initial $\Lambda_b$ polarization and the polarization density-matrices are
derived to perform tests of both Time-Reversal (TR) and CP violation.


title: The Roper and Radiative Decay of Pentaquarks

abstract:
  Identifying the Roper N(1440) and N(1710) as the pentaquark octet and
anti-decuplet, respectively, we analyze their main decay modes in the diquark
picture. The ratio of the partial decay widths is largely consistent with the
nearly ideal mixing of the Jaffe-Wilczek diquark model, which then allows to
predict the width of the radiative decay of N(1440), $\Gamma_{10}(N\to
p\gamma)=1/4 \Gamma_{12}(N\to n\gamma)=0.25-0.31$ MeV. We then show that the
three-body radiative decay of the pentaquark anti-decuplet is quite enhanced
due to its mixing with the pentaquark octet. We find for the $J^P={1/2}^+$
pentaquark anti-decuplet $\Gamma(\Theta^+\to K^+ n \gamma)=0.034 \sim 0.041$
MeV. The diquark picture of the pentaquark predicts $\Gamma(\Theta^+\to K^+ n
\gamma) =4 \Gamma(\Theta^+\to K^0 p \gamma)$. Finally we show that the
difference in the Theta+ mass in the K0 p and K+ n decay channels may be
accounted for by the missing photons in the radiative decay.


title: Combined potential of future long-baseline and reactor experiments

abstract:
  We investigate the determination of neutrino oscillation parameters by
experiments within the next ten years. The potential of conventional beam
experiments (MINOS, ICARUS, OPERA), superbeam experiments (T2K, NOvA), and
reactor experiments (D-CHOOZ) to improve the precision on the ``atmospheric''
parameters $\Delta m^2_{31}$, $\theta_{23}$, as well as the sensitivity to
$\theta_{13}$ are discussed. Further, we comment on the possibility to
determine the leptonic CP-phase and the neutrino mass hierarchy if
$\theta_{13}$ turns out to be large.


title: Bound-state beta-decay of a neutron in a strong magnetic field

abstract:
  The beta-decay of a neutron into a bound $(pe^-)$ state and an antineutrino
in the presence of a strong uniform magnetic field ($B \gtrsim 10^{13}$ G) is
considered. The beta-decay process is treated within the framework of the
standard model of weak interactions. A Bethe-Salpeter formalism is employed for
description of the bound $(pe^-)$ system in a strong magnetic field. For the
field strengths $10^{13}$ G$ \lesssim B \lesssim10^{18}$ G the estimate for the
ratio of the bound-state decay rate $w_b$ and the usual (continuum-state) decay
rate $w_c$ is derived. It is found that in such strong magnetic fields $w_b/w_c
\sim 0.1-0.4$. This is in contrast to the field-free case, where $w_b/w_c
\simeq 4.2 \times 10^{-6}$ [J. N. Bahcall, Phys. Rev. {\bf 124}, 495 (1961); L.
L. Nemenov, Sov. J. Nucl. Phys. {\bf 15}, 582 (1972); X. Song, J. Phys. G:
Nucl. Phys. {\bf 13}, 1023 (1987)]. The dependence of the ratio $w_b/w_c$ on
the magnetic field strength $B$ exhibits a logarithmic-like behavior. The
obtained results can be important for applications in astrophysics and
cosmology.


title:
Effective potential at finite temperature in a constant magnetic field
  I: Ring diagrams in a scalar theory

abstract:
  We study symmetry restoration at finite temperature in the theory of a
charged scalar field interacting with a constant, external magnetic field. We
compute the finite temperature effective potential including the contribution
from ring diagrams. We show that in the weak field case, the presence of the
field produces a stronger first order phase transition and that the temperature
for the onset of the transition is lower, as compared to the case without
magnetic field.


title: Muon Anomalous Magnetic Moment in a Supersymmetric U(1)' Model

abstract:
  We study the muon anomalous magnetic moment a_\mu = (g_\mu - 2)/2 in a
supersymmetric U(1)' model. The neutralino sector has extra components from the
superpartners of the U(1)' gauge boson and the extra Higgs singlets that break
the U(1)' symmetry. The theoretical maximum bound on the lightest neutralino
mass is much smaller than that of the Minimal Supersymmetric Standard Model
(MSSM) because of the mixing pattern of the extra components. In a U(1)' model
where the U(1)' symmetry is broken by a secluded sector (the S-model), tan\beta
is required to be < 3 to have realistic electroweak symmetry breaking. These
facts suggest that the a_\mu prediction may be meaningfully different from that
of the MSSM. We evaluate and compare the muon anomalous magnetic moment in this
model and the MSSM and discuss the constraints on tan\beta and relevant soft
breaking terms. There are regions of the parameter space that can explain the
experimental deviation of a_\mu from the Standard Model calculation and yield
an acceptable cold dark matter relic density without conflict with collider
experimental constraints.


title:
Search for evidence of two photon contribution in elastic electron
  proton data

abstract:
  We reanalyze the most recent data on elastic electron proton scattering. We
look for a deviation from linearity of the Rosenbluth fit to the differential
cross section, which would be the signature of the presence of two photon
exchange. The two photon contribution is parametrized by a one parameter
formula, based on symmetry arguments. The present data do not show evidence for
such deviation.


title:
Quark Initial State Interaction in Deep Inelastic Scattering and the
  Drell-Yan process

abstract:
  We pursue a phenomenological study of higher twist effects in high energy
processes by taking into account the off-shellness (virtuality) of partons
bound in the nucleon. The effect of parton off-shellness in deep inelastic
ep->eX scattering and the Drell-Yan process (pp->l+ l- X) is examined. Assuming
factorization and a single-parameter Breit-Wigner form for the parton spectral
function, we develop a model to calculate the corresponding off-shell cross
sections. Allowing for a finite parton width of the order of 100 MeV, we
reproduce the data of both DIS and the triple differential Drell-Yan cross
section without an additional K-factor. The results are compared to those from
perturbative QCD and the intrinsic-kT approach.


title: The CEDAR Project

abstract:
  We describe the plans and objectives of the CEDAR project (Combined e-Science
Data Analysis Resource for High Energy Physics) newly funded by the PPARC
e-Science programme in the UK. CEDAR will combine the strengths of the well
established and widely used HEPDATA database of HEP data and the innovative
JetWeb data/Monte Carlo comparison facility, built on the HZTOOL package, and
will exploit developing grid technology. The current status and future plans of
both of these individual sub-projects within the CEDAR framework are described,
showing how they will cohesively provide (a) an extensive archive of Reaction
Data, (b) validation and tuning of Monte Carlo programs against these reaction
data sets, and (c) a validated code repository for a wide range of HEP code
such as parton distribution functions and other calculation codes used by
particle physicists. Once established it is envisaged CEDAR will become an
important Grid tool used by LHC experimentalists in their analyses and may well
serve as a model in other branches of science where there is a need to compare
data and complex simulations.


title: Charm meson resonances in $D \to P \ell \nu$ decays

abstract:
  Motivated by recent experimental results we reconsider semileptonic $D \to P
\ell \nu_{\ell} $ decays within a model which combines heavy quark symmetry and
properties of the chiral Lagrangian. We include excited charm meson states,
some of them recently observed, in our Lagrangian and determine their impact on
the charm meson semileptonic form factors. We find that the inclusion of
excited charm meson states in the model leads to a rather good agreement with
the experimental results on the $q^2$ shape of the $F_+(q^2)$ form factor. We
also calculate branching ratios for all $D \to P \ell \nu_{\ell} $ decays.


title: Transversity and dihadron fragmentation functions

abstract:
  The observation of the quark transversity distribution requires another soft
object sensitive to the quark's transverse spin. Dihadron fragmentation
functions represent a convenient tool to analyze partonic spin, which can
influence the angular distribution of the two hadrons. In particular, the
so-called interference fragmentation functions can be used to probe
transversity both in semi-inclusive deep inelastic scattering as well as
proton-proton collisions. We discuss two single-spin asymmetries sensitive to
transversity in the these two processes, at leading twist and leading order in
alpha_S.


title:
The chiral structure of the Lamb shift and the definition of the proton
  radius

abstract:
  The standard definition of the electromagnetic radius of a charged particle
(in particular the proton) is ambiguous once electromagnetic corrections are
considered. We argue that a natural definition can be given within an effective
field theory framework in terms of a matching coefficient. The definition of
the neutron radius is also discussed. We elaborate on the effective field
theory relevant for the hydrogen and muonic hydrogen, specially for the latter.
We compute the hadronic corrections to the lamb shift (for the polarizability
effects only with logarithmic accuracy) within heavy baryon effective theory.
We find that they diverge in the inverse of the pion mass in the chiral limit.


title:
$D$-term inflation, cosmic strings, and consistency with cosmic
  microwave background measurement

abstract:
  Standard D-term inflation is studied in the framework of supergravity. D-term
inflation produces cosmic strings, however it can still be compatible with CMB
measurements without invoking any new physics. The cosmic strings contribution
to the CMB data is not constant, nor dominant, contrary to some previous
results. Using current CMB measurements, the free parameters (gauge and
superpotential couplings, as well as the Fayet-Iliopoulos term) of D-term
inflation are constrained.


title: Sum rules in the heavy quark limit of QCD and Isgur-Wise functions

abstract:
  Using the OPE, we formulate new sum rules in the heavy quark limit of QCD.
These sum rules imply that the elastic Isgur-Wise function $\xi (w)$ is an
alternate series in powers of $(w-1)$. Moreover, one gets that the $n$-th
derivative of $\xi (w)$ at $ w=1$ can be bounded by the $(n-1)$-th one, and an
absolute lower bound for the $n$-th derivative $(-1)^n \xi^{(n)}(1) \geq
{(2n+1)!! \over 2^{2n}}$. Moreover, for the curvature we find $\xi ''(1) \geq
{1 \over 5} [4 \rho^2 + 3(\rho^2)^2]$ where $\rho^2 = - \xi '(1)$. We show that
the quadratic term ${3 \over 5} (\rho^2)^2$ has a transparent physical
interpretation, as it is leading in a non-relativistic expansion in the mass of
the light quark. These bounds should be taken into account in the
parametrizations of $\xi (w)$ used to extract $|V_{cb}|$. These results are
consistent with the dispersive bounds, and they strongly reduce the allowed
region of the latter for $\xi (w)$. The method is extended to the subleading
quantities in $1/m_Q$, namely $\xi_3(w)$ and $\bar{\Lambda}\xi (w)$.}]


title: Chain Inflation in the Landscape: "Bubble Bubble Toil and Trouble"

abstract:
  In the model of Chain Inflation, a sequential chain of coupled scalar fields
drives inflation. We consider a multidimensional potential with a large number
of bowls, or local minima, separated by energy barriers: inflation takes place
as the system tunnels from the highest energy bowl to another bowl of lower
energy, and so on until it reaches the zero energy ground state. Such a
scenario can be motivated by the many vacua in the stringy landscape, and our
model can apply to other multidimensional potentials. The ''graceful exit''
problem of Old Inflation is resolved since reheating is easily achieved at each
stage. Coupling between the fields is crucial to the scenario. The model is
quite generic and succeeds for natural couplings and parameters. Chain
inflation succeeds for a wide variety of energy scales -- for potentials
ranging from 10MeV scale inflation to $10^{16}$ GeV scale inflation.


title: Theory of W and Z boson production

abstract:
  Success of precision studies in W and Z boson production at the Tevatron and
LHC depends on the progress in reducing theoretical uncertainties to the level
of 1-2%. I review recent developments in theoretical understanding of W and Z
boson production and remaining issues to be solved to meet demands of the
near-future experiments.


title:
Two-loop gluino contributions to neutron electric dipole moment in CP
  violating MSSM

abstract:
  We analyze two-loop gluino corrections to the neutron electric dipole moment
(EDM) in the minimal supersymmetry extension of the standard model (MSSM). The
dependence of two-loop corrections on the relevant CP violating phases differs
from that of the one-loop contributions, and there is a region in the parameter
space where the two-loop contributions are comparable with the one-loop
contributions. Our numerical results show that the two-loop corrections can be
as large as 30% of the one-loop results.


title: Phenomenology of Absolute Neutrino Masses

abstract:
  The phenomenology of absolute neutrino masses is reviewed, focusing on
tritium beta decay, cosmological measurements and neutrinoless double-beta
decay.


title:
Distinguishing technicolor models via tt-bar productions at polarized
  photon colliders

abstract:
  We study top quark pair productions at a polarized photon collider from an
e(+)e(-) linear collider (LC) in various improved technicolor model, namely,
the one-family walking technicolor model, the top-color-assisted technicolor
model, and the top-color-assisted multiscale technicolor model. Recent
constraint on the top-pion mass from the precision data of R(b) is considered.
It is shown that, considering only the statistical errors, a polarized photon
collider from a 500 GeV LC with an integrated luminosity of 500 inverse fb is
sufficient for distinguishing the three improved technicolor models
experimentally.


title: A Model Independent Approach to Semi-Inclusive Deep Inelastic Scattering

abstract:
  We present a method for extraction of detailed information on polarized quark
densities from semi-inclusive deep inelastic scattering l+N -> l+h+X, in both
LO and NLO QCD without any assumptions about fragmentation functions and
polarized sea densities. The only symmetries utilised are charge conjugation
and isotopic spin invariance of strong interactions.


title: Super-Cerenkov Radiation: A new phenomenon useful for RICH Detectors

abstract:
  In this contribution the Super-Cerenkov radiation (SCR) as a new phenomenon
which includes in a more general and exact form the usual Cerenkov effect is
presented. The Super-Cerenkov effect at Cerenkov threshold in the radiators of
RICH detectors is investigated. The results on the experimental test of the
super- Cerenkov coherence conditions are presented. The SCR-predictions are
verified experimentally with high accuracy chi/n_{dof}=1.47 by the data on the
Cerenkov ring radii of electron, muon, pion and kaon, all measured with RICH
detector. Moreover, it is shown that the Super-Cerenkov phenomenon can explain
not only subthreshold CR but also the observed secondary rings (or anomalous
Cerenkov radiation) observed at CERN SPS accelerator. The influence of medium
on the particle propagation properties is also estimated and the refractive
properties of electrons, muons, pions, in the radiator C4F10Ar are obtained.
So, we proved that the refractive indices of the charged elementary particles
in medium are also very important for the RICH detectors, especially at low and
intermediate energies.


title: V-A hadronic tau decays : a laboratory for the QCD vacuum

abstract:
  ALEPH/OPAL data on the V-A spectral functions from hadronic tau decays are
used in connection with a set of Laplace transform sum rules (LSR) for fixing
the size of the QCD vacuum condensates up to dimension 18. Our results favour
the ones from large-N_c QCD within the Minimal Hadronic Approximation (MHA) and
show a violation of about a factor 2-5 of the vacuum saturation estimate of the
dimension-six to -ten condensates. We scrutinize the different determinations
of the QCD vacuum condensates using tau-decays data. After revisiting some of
the existing results, we present coherent values of the condensates from
different methods.


title:
Effects of SO(10)-inspired scalar non-universality on the MSSM parameter
  space at large tan beta

abstract:
  We analyze the parameter space of the (mu > 0, A_0 = 0) CMSSM at large tan
beta with a small degree of non-universality originating from D-terms and
Higgs-sfermion splitting inspired by SO(10) GUT models. The effects of such
non-universalities on the sparticle spectrum and observables such as (g-2)_mu,
B(b -> X_s gamma), the SUSY threshold corrections to the bottom mass and
Omega_CDM h^2 are examined in detail and the consequences for the allowed
parameter space of the model are investigated. We find that even small
deviations to universality can result in large qualitative differences compared
to the universal case; for certain values of the parameters, we find, even at
low m_16, that radiative electroweak symmetry breaking fails as a consequence
of either |mu|^2 < 0 or m_(A^0)^2 < 0. We find particularly large departures
from the mSugra case for the neutralino relic density, which is sensitive to
significant changes in the position and shape of the A^0 resonance and a
substantial increase in the Higgsino component of the LSP. However, we find
that the corrections to the bottom mass are not sufficient to allow for Yukawa
unification.


title: A probe to the global color symmetry model

abstract:
  This paper has been withdrawn by the author due to the unsure solution to the
Dyson-Schwinger equation.


title: Light Scalar Mesons

abstract:
  The crucial points of physics of light scalar mesons are discussed. The
special attention is given to the chiral shielding of lightest scalar mesons
and the production of the well established light scalar mesons in the \phi
radiative decays.
  Arguments in favor of the four-quark model of the a0(980) and f0(980) mesons
are given.


title: Present understanding of the nucleon spin structure

abstract:
  The present understanding of the spin structure of the nucleon is briefly
reviewed. The main focus is on parton helicity distributions, orbital angular
momentum of partons as defined through generalized parton distributions, as
well as single spin asymmetries and time-reversal odd correlation functions.


title: Transversity K Factors for Drell-Yan

abstract:
  The question of the K factor in transversely polarised Drell-Yan (DY)
processes is examined. The transverse-spin case is peculiar for the absence of
a reference point in deeply inelastic scattering (DIS). Therefore, in order to
study more fully the possible effects of higher-order corrections on DY
asymmetries, a DIS definition for transversity is devised using a hypothetical
scalar (Higgs-like) vertex. The results show that some care may be required in
interpreting experimentally extracted partonic transversity, in particular when
comparing with model calculations or predictions.


title: Heavy Quarkonium Physics

abstract:
  This report is the result of the collaboration and research effort of the
Quarkonium Working Group over the last three years. It provides a comprehensive
overview of the state of the art in heavy-quarkonium theory and experiment,
covering quarkonium spectroscopy, decay, and production, the determination of
QCD parameters from quarkonium observables, quarkonia in media, and the effects
on quarkonia of physics beyond the Standard Model. An introduction to common
theoretical and experimental tools is included. Future opportunities for
research in quarkonium physics are also discussed.


title: Transversity and Drell-Yan $K$-Factors

abstract:
  The Drell-Yan $K$-factors for transversely polarised hadrons are examined.
Since transverse spin is peculiar in having no DIS reference point, the effects
of higher-order corrections on DY asymmetries are examined via a DIS definition
for transversity devised using a hypothetical scalar vertex. The results
suggest that some care may be required when interpreting experimentally
extracted partonic transversity, particularly when comparing with model
calculations or predictions.


title: Summing Logs of the Velocity in NRQCD and Top Threshold Physics

abstract:
  To achieve reliable predictions of the top-antitop threshold cross section at
a future e+e- Linear Collider logarithms of the top velocity need to be
resummed. I review the issues that make this problem complicated and show how
the task can be achieved by renormalization in an effective theory using the so
called velocity renormalization group. The most recent NNLL order results are
discussed.


title:
Connection between Second Class Currents and the $\Delta N\gamma$ Form
  Factors $G_M^*(q^2)$ and $G_E^*(q^2)$

abstract:
  An interesting connection between the nucleon weak axial-vector second class
current form factor $g_{T}(q^{2})$ present in the matrix element $< {p} |
A_{\pi ^{+}}^{\mu}| {n} >$ and the $\Delta N\gamma$ form factors
$G_{M}^{\ast}(q^{2})$ and $G_{E}^{\ast}(q^{2})$ is derived. Using a
nonperturbative, relativistic sum rule approach in the infinite momentum frame,
$G_{M}^{\ast}(q^{2})$ and $G_{E}^{\ast}(q^{2})$ are calculated in terms of
$g_{T}(q^{2})$ and the well-known nucleon isovector Sachs form factor
$G_{M}^{V}$ as input with no additional model parameters. Reasonable agreement
with the data for $G_{M}^{\ast}(q^{2})$ may be achieved with a non-zero
$g_{T}(q^{2})$ too large to be accommodated in the Standard Model.
  We surmise that it is plausible that second class current-associated pion
cloud effects are playing a significant role in pion electroproduction
processes and perhaps must be taken into account in those methodologies which
utilize effective Lagrangians.


title: Quarks vs. gluons in exclusive rho electroproduction

abstract:
  We compare the contributions from quark and from gluon exchange to the
exclusive process gamma* p -> rho0 p. We present evidence that the gluon
contribution is substantial for values of the Bjorken variable xB around 0.1.


title: Evading the Few TeV Perturbative Limit in 3-3-1 Models

abstract:
  Some versions of the electroweak SU(3)$_L\otimesU(1)_X$ models cannot be
treated within perturbation theory at energies of few TeV. An extended version
for these models is proposed which is perturbative even at TeV scale posing no
threatening inconsistency for test at future colliders. The extension presented
here needs the addition of three octets of vector leptons, which leave three
new leptonic isotriplets in the SU(2)$_L\otimesU(1)_Y$ subgroup. With this
representation content the running of the electroweak mixing angle, $\theta_W
(\mu)$, is such that $\sin^2\theta_W(\mu)$ decreases with the increase of the
energy scale $\mu$, when only the light states of the Standard Model group are
considered. The neutral exotic gauge boson $Z^\prime$ marks then a new symmetry
frontier.


title: Master integrals for massive two-loop Bhabha scattering in QED

abstract:
  We present a set of scalar master integrals (MIs) needed for a complete
treatment of massive two-loop corrections to Bhabha scattering in QED,
including integrals with arbitrary fermionic loops. The status of analytical
solutions for the MIs is reviewed and examples of some methods to solve MIs
analytically are worked out in more detail. Analytical results for the pole
terms in epsilon of so far unknown box MIs with five internal lines are given.


title:
Dynamical Zero in Antineutrino_e -- Electron Scattering and the Neutrino
  Magnetic Moment

abstract:
  The Standard Model differential cross section for $\bar{\nu}_e-e^-$ elastic
scattering vanishes exactly, at lowest order, for forward electrons and
incident $\bar{\nu}_e$ energy close to the rest energy of the electron. This
dynamical zero is not induced by a fundamental symmetry of the Lagrangian but
by a destructive interference between the left- and right-handed chiral
couplings of the electron in the charged and neutral current amplitudes. We
show that lowest order analyses based on this favorable kinematic configuration
are only mildly affected by the inclusion of the $O(\alpha)$ radiative
corrections in the $\bar{\nu}_e-e^-$ differential cross section, thus providing
an excellent opportunity for the search of ``new physics''. In the light of
these results, we discuss possible methods to improve the upper limits on the
neutrino magnetic moment by selecting recoil electrons contained in a forward
narrow cone. We conclude that, in spite of the obvious loss in statistics, one
may have a better signal for small angular cones.


title: Effective Theory Analysis of Precision Electroweak Data

abstract:
  We obtain the bounds on arbitrary linear combinations of operators of
dimension 6 in the Standard Model. We consider a set of 21 flavor and CP
conserving operators. Each of our 21 operators is tightly constrained by the
standard set of electroweak measurements. We perform a fit to all relevant
precision electroweak data and include neutrino scattering experiments, atomic
parity violation, W mass, LEP1, SLD, and LEP2 data. Our results provide an
efficient way of obtaining bounds on weakly coupled extensions of the Standard
Model.


title: Twistor-Inspired Construction of Electroweak Vector Boson Currents

abstract:
  We present an extension of the twistor-motivated MHV vertices and
accompanying rules presented by Cachazo, Svrvcek and Witten to the construction
of vector-boson currents coupling to an arbitrary source. In particular, we
give rules for constructing off-shell vector-boson currents with one fermion
pair and n gluons of arbitrary helicity. These currents may be employed
directly in the computation of electroweak amplitudes. The rules yield
expressions in agreement with previously-obtained results for Z,W,\gamma^* -->
qbar q + n gluons (analytically up to n=3, beyond via the Berends--Giele
recursion relations). We also confirm that the contribution to a seven-point
amplitude containing the non-abelian triple vector-boson coupling obtained
using the next-to-MHV currents matches the previous result in the literature.


title: Testing SUGRA Models

abstract:
  A brief review is given of the ways of testing SUGRA unified models and a
class of string models using data from precision electroweak experiments,
Yukawa unification constraints, and constraints from dark matter experiments.
Models discussed in detail include mSUGRA, extended SUGRA model with
non-universalities within SO(10) grand unification, and effective theories with
modular invariant soft breaking within a generic heterotic string framework.
The implications of the Hyperbolic Branch including the focus point and
inversion regions for the discovery of supersymmetry in collider experiments
and for the detection of dark matter in the direct detection experiments are
also discussed.


title: Generalized perton distributions: analysis and applications

abstract:
  Results from a recent analysis of the zero-skewness generalized parton
distributions (GPDs) for valence quarks are discussed. The analysis bases on a
physically motivated parameterization of the GPDs with a few free parameters
adjusted to the available nucleon form factor data. Various moments of the GPDs
as well as their Fourier transfroms, the quark densities in the impact
parameter plane, are also presented. The 1/x moments of the zero-skewness GPDs
are form factors specific to Compton scattering off protons within the handbag
approach. The results of the GPD analysis enables one to predict Compton
scattering.