title: Solar Model Parameters and Direct Measurements of Solar Neutrino Fluxes

abstract:
  We explore a novel possibility of determining the solar model parameters,
which serve as input in the calculations of the solar neutrino fluxes, by
exploiting the data from direct measurements of the fluxes. More specifically,
we use the rather precise value of the $^8B$ neutrino flux, $\phi_B$ obtained
from the global analysis of the solar neutrino and KamLAND data, to derive
constraints on each of the solar model parameters on which $\phi_B$ depends. We
also use more precise values of $^7Be$ and $pp$ fluxes as can be obtained from
future prospective data and discuss whether such measurements can help in
reducing the uncertainties of one or more input parameters of the Standard
Solar Model.


title:
Signature of heavy Charged Higgs Boson at LHC in the 1 and 3 prong
  Hadronic Tau Decay channels

abstract:
  We have done a fast simulation analysis of the charged Higgs signal at LHC in
the 1 and 3 prong hadronic $\tau$-jet channels along with the $t \bar t$
background. The $\tau$ polarization was effectively used to suppress the
background in both the channels. Combining this with appropriate cuts on the
$p_T$ of the $\tau$-jet, the missing $E_T$ and the azimuthal angle between them
reduces the background below the signal level. Consequently one gets a viable
charged higgs signal up to a mass range of 600-700 GeV at moderate to large
$\tan\beta$.


title:
Nucleon Form Factors of the Isovector Axial-Vector Current: Situation of
  Experiments and Theory

abstract:
  The theoretical and experimental status of the isovector axial-vector current
form factors G_A(q^2) and G_P(q^2) of the nucleon is reviewed. We also describe
a new calculation of these form factors in manifestly Lorentz-invariant chiral
perturbation theory (ChPT) with the inclusion of axial-vector mesons as
explicit degrees of freedom.


title:
Two-loop electroweak next-to-leading logarithmic corrections to massless
  fermionic processes

abstract:
  We consider two-loop leading and next-to-leading logarithmic virtual
corrections to arbitrary processes with external massless fermions in the
electroweak Standard Model at energies well above the electroweak scale. Using
the sector-decomposition method and alternatively the strategy of regions we
calculate the mass singularities that arise as logarithms of Q^2/MW^2, where Q
is the energy scale of the considered process, and 1/\epsilon poles in
D=4-2\epsilon dimensions, to one- and two-loop next-to-leading logarithmic
accuracy. The derivations are performed within the complete electroweak theory
with spontaneous symmetry breaking. Our results indicate a close analogy
between the form of two-loop electroweak logarithmic corrections and the
singular structure of scattering amplitudes in massless QCD. We find agreement
with the resummation prescriptions that have been proposed in the literature
based on a symmetric SU(2) \times U(1) theory matched with QED at the
electroweak scale and provide new next-to-leading contributions proportional to
ln(MZ^2/MW^2).


title: Radiative transitions and the quarkonium magnetic moment

abstract:
  I discuss heavy quarkonium radiative transitions and the related issue of the
quarkonium magnetic moment inside effective field theories. Differences in set
up and conclusions with respect to typical phenomenological approaches are
outlined.


title: Direct CP violation in $B^\pm\to p \bar{p} K^{(*)\pm}$

abstract:
  We study the direct CP violation in $B^\pm\to p\bar p K^{(*)\pm}$ decays in
the standard model. We point out that these three-body baryonic B decays can be
important tools for detecting the direct CP violation in the charged $B$
system, in which there are no conclusive signatures yet. In particular, we show
that the direct CP violating asymmetry in $B^\pm\to p\bar p K^{*\pm}$ is around
22% which supports the recent data by the BABAR Collaboration.


title:
Precision measurements of sigma_hadronic for alpha_eff(E) at ILC
  energies and (g-2)_mu

abstract:
  A more precise determination of the effective fine structure constant
alpha_eff(E) is mandatory for confronting data from future precision
experiments with precise SM predictions. At a future e+e- collider like the
ILC, as at LEP before, alpha_eff(E) plays the role the static zero momentum
alpha=alpha_eff(0) plays in low energy physics. However, by going to the
effective version of alpha one loses about a factor 2 times 10^2 at E=m_mu to
10^5 at E=M_Z in precision, such that for physics at the gauge boson mass scale
and beyond alpha_eff(E) is the least known basic parameter, about a factor 20
less precise than the neutral gauge boson mass M_Z and by about a factor 60
less precise than the Fermi constant G_F. We discuss a strategy which should be
able to reach a factor 10 improvement by appropriate efforts in performing
dedicated measurements of sigma_hadronic in a wide energy range as well as
efforts in theory and in particular improving the precision of the QCD
parameters alpha_s, m_c and m_b. Projects at VEPP-2000 (Novosibirsk) and
DANAE/KLOE-2 (Frascati) are particularly important for improving on
alpha_eff(M_Z) as well as alpha_eff(m_mu). We present an up-to-date analysis
including the recent data from KLOE, SND, CMD-2 and BABAR. The analysis based
on e+e- data yields Delta alpha_had^(5)(M_Z) = 0.027593 +/- 0.000169
[alpha^-1(M_Z) = 128.938 +/- 0.023] and a_mu^had=(692.1 +/- 5.6) x 10^{-10}. We
emphasize the very high improvement potential of the VEPP-2000 and DANAE/KLOE-2
projects.


title: Phenomenology of Left-Right Twin Higgs Model

abstract:
  Twin Higgs mechanism has recently been proposed to solve the ``little
Hierarchy'' problem. We studied the implementation of twin Higgs mechanism in
left-right models. We discussed the particle spectrum, and the collider
phenomenology at the Large Hadron Collider.


title:
Search for new physics via single top production at TeV energy $e\gamma$
  colliders

abstract:
  We study the sensitivity of $ e \gamma$ colliders to physics beyond the
Standard Model, when such interactions are natural and their scale lies below
the collider energy. Using the reaction $ e \gamma \to b t \nu$ as a specific
example, we show that the deviations from the Standard Model can be
parameterized in a model independent way by only 3 numbers. We investigate the
sensitivity of several observables to these 3 quantities, using the various
collider polarization modes to increase the signal to noise ratio. These
results are then translated into the expected sensitivity derived from this
reaction to the new physics effects present in several specific models.


title:
Synchrotron and Inverse Compton Constraints on Lorentz Violations for
  Electrons

abstract:
  We present a method for constraining Lorentz violation in the electron
sector, based on observations of the photons emitted by high-energy
astrophysical sources. The most important Lorentz-violating operators at the
relevant energies are parameterized by a tensor c^{nu mu) with nine independent
components. If c is nonvanishing, then there may be either a maximum electron
velocity less than the speed of light or a maximum energy for subluminal
electrons; both these quantities will generally depend on the direction of an
electron's motion. From synchrotron radiation, we may infer a lower bound on
the maximum velocity, and from inverse Compton emission, a lower bound on the
maximum subluminal energy. With observational data for both these types of
emission from multiple celestial sources, we may then place bounds on all nine
of the coefficients that make up c. The most stringent bound, on a certain
combination of the coefficients, is at the 6 x 10^(-20) level, and bounds on
the coefficients individually range from the 7 x 10^(-15) level to the 2 x
10^(-17) level. For most of the coefficients, these are the most precise bounds
available, and with newly available data, we can already improve over previous
bounds obtained by the same methods.


title: Mach cones and dijets - jet quenching and fireball expansion dynamics

abstract:
  The energy loss of a hard parton is regarded as a useful tool to probe
properties of a soft medium. However, the information obtained by a measurement
of the nuclear suppression R_AA is not very sensitive to medium properties.
Thus, more differential observables are needed. Here we focus on the pattern of
angular correlation of hadrons associated with a hard trigger. These show rich
pattern when going from low p_T to high p_T associate momentum. At low p_T, the
pattern of associate hadrons can be understood in terms of Mach shocks excited
by the energy lost from the away side parton while the parton itself is
absorbed by the medium. At high p_T, fluid dynamics is not applicable any more
and the correlations become dominated by the punchtrough of the away side
parton with subsequent fragmentation. We present an analysis of these phenomena
taking into account the full expansion dynamics of soft matter and show how
both transverse and longitudinal expansion play a crucial role in understanding
the data.


title:
Probing deviations from tri-bimaximal mixing through ultra high energy
  neutrino signals

abstract:
  We investigate deviation from the tri-bimaximal mixing in the case of ultra
high energy neutrino using ICECUBE detector. We consider the ratio of No. of
muon tracks to the shower generated due to eletrons and hadrons. Our analysis
shows for tri-bimaximal mixing the ratio comes out around 4.05. Keeping
$\theta_12$ and $\theta_23$ fixed at tri-bimaximal value, we have varied the
angle $\theta_{13}$ = $3^o$, $6^o$, $9^o$ and the value of the ratio gradually
decreases. The variation of ratio lies 8% to 18% from the tri-bimaximal mixing
value.


title: Late-time Affleck-Dine baryogenesis after thermal inflation

abstract:
  Thermal inflation can solve serious cosmological problems such as
overproduction of gravitinos and moduli. However, it also dilutes the
preexisting baryon asymmetry. We investigate a possibility that Affleck-Dine
mechanism works after thermal inflation and generate the baryon number at an
acceptable level using lattice calculation. We find that a proper amount of
baryon number can be generated for appropriate model parameters.


title: On the Current Correlators at Low Temperature

abstract:
  It is demonstrated, that the calculations of current correlators at low $T$,
performed in Ref.'s \cite{1},\cite{2},\cite{3a} by the methods of current
algebra, are correct contrary to the statements of the recent paper by Mallik
\cite{3}.


title: Dispersion analysis of the nucleon form factors including meson continua

abstract:
  Dispersion relations provide a powerful tool to analyse the electromagnetic
form factors of the nucleon for all momentum transfers. Constraints from
meson-nucleon scattering data, unitarity, and perturbative QCD can be included
in a straightforward way. In particular, we include the 2pi, rho-pi, and KKbar
continua as independent input in our analysis and provide an error band for our
results. Moreover, we discuss two different methods to include the asymptotic
constraints from perturbative QCD. We simultaneously analyze the world data for
all four form factors in both the space-like and time-like regions and
generally find good agreement with the data. We also extract the nucleon radii
and the omega-NN coupling constants. For the radii, we generally find good
agreement with other determinations with the exception of the electric charge
radius of the proton which comes out smaller. The omega-NN vector coupling
constant is determined relatively well by the fits, but for the tensor coupling
constant even the sign can not be determined.


title: From Unified Theories to Precision Neutrino Experiments

abstract:
  The expected high sensitivities of future neutrino oscillation experiments
will allow precision tests of unified theories of flavour. In order to compare
GUT scale predictions for neutrino masses, leptonic mixing angles and CP
violating phases with experimental results obtained at low energy, their
renormalization group running has to be taken into account. We discuss the
running in seesaw scenarios, present analytical approximations as well as
numerical tools, and compare the size of the running effects with the expected
experimental sensitivities.


title:
Comparison of NNLO and all-orders estimates of corrections to the GLS
  and Bjorken sum rules

abstract:
  For the GLS and Bjorken DIS sum rules we compare fixed-order NNLO
perturbative QCD estimates, and all-orders resummed estimates, with the
available data, in order to assess the reliability of fixed-order perturbation
theory at rather small Q^2 values. Fits are also performed for non-perturbative
power corrections using a recently proposed model.


title: Fermion family recurrences in the Dyson-Schwinger formalism

abstract:
  We study the multiple solutions of the truncated propagator Dyson-Schwinger
equation for a simple fermion theory with Yukawa coupling to a scalar field.
Upon increasing the coupling constant $g$, other parameters being fixed, more
than one non-perturbative solution breaking chiral symmetry becomes possible
and we find these numerically. These ``recurrences'' appear as a mechanism to
generate different fermion generations as quanta of the same fundamental field
in an interacting field theory, without assuming any composite structure. The
number of recurrences or flavors is reduced to a question about the value of
the Yukawa coupling, and has no special profound significance in the Standard
Model. The resulting mass function can have one or more nodes and the
measurement that potentially detects them can be thought of as a collider-based
test of the virtual dispersion relation $E=\sqrt{p^2+M(p^2)^2}$ for the charged
lepton member of each family. This requires three independent measurements of
the charged lepton's energy, three-momentum and off-shellness. We illustrate
how this can be achieved for the (more difficult) case of the tau lepton.


title: $B_s-\bar{B_s}$ mixing, B decays and R-parity violating supersymmetry

abstract:
  We discuss the implications of the recent measurement of the $B_s-\bar{B_s}$
oscillation frequency $\Delta M_s$ on the parameter space of R-parity violating
supersymmetry. For completeness, we also discuss the bounds coming from
leptonic, semileptonic, and nonleptonic B decay modes, and point out some
possibly interesting channels at LHC.


title:
Manifestation of the JLab proton polarization data on the behaviour of
  strange nucleon form factors

abstract:
  Special eight-resonance unitary and analytic model of nucleon electromagnetic
structure is used to analyze, first the classical proton form factor data
obtained by the Rosenbluth technique and then also the contradicting JLab
proton polarization data on the ratio $\mu_p G_{Ep}(Q^2)/G_{Mp}(Q^2)$ with the
aim to investigate a manifestation of the latter on the strange nucleon form
factors behaviour.


title: Theory review on rare K decays: Standard Model and beyond

abstract:
  The theoretical status of the rare K --> pi nu nu, KL --> pi0 l+ l- and KL
--> mu+ mu- decays in the Standard Model is reviewed. Their sensitivity to New
Physics and their discriminating power is also illustrated.


title: Thermal Gravitino Production and Collider Tests of Leptogenesis

abstract:
  Considering gravitino dark matter scenarios, we obtain the full
gauge-invariant result for the relic density of thermally produced gravitinos
to leading order in the Standard Model gauge couplings. For the temperatures
required by thermal leptogenesis, we find gaugino mass bounds which will be
probed at future colliders. We show that a conceivable determination of the
gravitino mass will allow for a unique test of the viability of thermal
leptogenesis in the laboratory.


title:
Forward pion production at large transverse momenta in pp collisions and
  beyond

abstract:
  The inclusive production of high-p_\perp particles (pions) in the beam
fragmentation regions of high-energy hadronic collisions is driven by the
breakup of valence constituents of the beam hadrons into their two-body
Fock-state components,and their subsequent fragmentation. We briefly discuss an
approach, that allows the consistent inclusion of intrinsic and radiatively
generated transverse momenta of initial state partons, and describe an
extension of our approach to nuclear targets.


title:
A Neutron Interferometric Method to Provide Improved Constraints on
  Non-Newtonian Gravity at the Nanometer Scale

abstract:
  In recent years, an energetic experimental program has set quite stringent
limits on a possible "non - 1/r^2" dependence on gravity at short length
scales. This effort has been largely driven by the predictions of theories
based on compactification of extra spatial dimensions. It is characteristic of
many such theories that the strength and length scales of such anomalous
gravity are not clearly determined from first principles. As a result, it is
productive to extend the current limits the range and strength of such
hypothetical interactions. As a heavy, neutral, and (almost) stable particle,
the neutron provides an ideal probe for the study of such hypothetical
interactions at very short range. In this work, we describe methods based on
neutron interferometry which have the capability to provide improved
sensitivity non-Newtonian forces down to length scales at and below an
nanometer.


title: Baryogenesis via leptogenesis

abstract:
  We discuss how leptogenesis can explain the observed baryon asymmetry and
summarize attempts of testing leptogenesis. We first perform estimates and
discuss the main physics, and later outline the techniques that allow to
perform precise computations.


title: Catfish: A Monte Carlo simulator for black holes at the LHC

abstract:
  We present a new Fortran Monte Carlo generator to simulate black hole events
at CERN's Large Hadron Collider. The generator interfaces to the PYTHIA Monte
Carlo fragmentation code. The physics of the BH generator includes, but not
limited to, inelasticity effects, exact field emissivities, corrections to
semiclassical black hole evaporation and gravitational energy loss at
formation. These features are essential to realistically reconstruct the
detector response and test different models of black hole formation and decay
at the LHC.


title: Effective Theory Description of Weak Annihilation in B-> Xu l nu Decays

abstract:
  The semileptonic B-> Xu l nu decays allow a pretty clean determination of the
CKM matrix element |Vub|. Nevertheless, the presence of weak-annihilation
effects near the end-point of the q2 spectrum introduces uncertainties in the
inclusive calculation, requiring the use of non-perturbative techniques like
heavy meson chiral perturbation theory and large NC limit.


title:
Cosmology and Fermion Confinement in a Scalar-Field-Generated Domain
  Wall Brane in Five Dimensions

abstract:
  We consider a brane generated by a scalar field domain wall configuration in
4+1 dimensions, interpolating, in most cases, between two vacua of the field.
We study the cosmology of such a system in the cases where the effective
four-dimensional brane metric is de Sitter or anti de Sitter, including a
discussion of the bulk coordinate singularities present in the de-Sitter case.
We demonstrate that a scalar field kink configuration can support a brane with
dS$_4$ cosmology, despite the presence of coordinate singularities in the
metric. We examine the trapping of fermion fields on the domain wall for
nontrivial brane cosmology.


title: Electromagnetic excitation of the Delta(1232)-resonance

abstract:
  We review the description of the lowest-energy nucleon excitation -- the
$\Delta$(1232)-resonance. Much of the recent experimental effort has been
focused on the precision measurements of the nucleon-to-$\Delta$ transition by
means of electromagnetic probes. We confront the results of these measuremnts
with the state-of-the-art calculations based on chiral effective-field theories
(EFT), lattice QCD, large-$N_c$ relations, perturbative QCD, and QCD-inspired
models. We also discuss the link of the nucleon-to-$\Delta$ form factors to
generalized parton distributions (GPDs). Some of the theoretical approaches are
reviewed in detail, in particular, recent dynamical and unitary-isobar models
of pion electroproduction, which are extensively used in the interpretation of
experiments. Also, the novel extension of chiral EFTs to the energy domain of
the $\Delta$-resonance is described in detail. The two-photon exchange effects
in the electroexcitation of the $\De$-resonance are addressed here as well.


title: $B \to K K^{*}$ Decays in the Perturbative QCD Approach

abstract:
  We calculate the branching ratios and CP-violating asymmetries for $B^0 \to
K^{0} \ov K^{*0}$, $\ov K^{0} K^{*0}$, $K^+ K^{*-}$, $K^- K^{*+}$, and $B^+\to
K^+ \ov K^{*0}$ and $ \ov K^0 K^{*+} $ decays by employing the low energy
effective Hamiltonian and the perturbative QCD (pQCD) factorization approach.
The theoretical predictions for the branching ratios are $Br(B^0/\ov B^0 \to
K^{\pm} K^{*\mp}) \approx 7.4 \times 10^{-8}$, $Br(B^0/\ov B^0 \to K^{0} \ov
K^{*0}(\ov K^{0} K^{*0})) \approx 19.6 \times 10^{-7}$, $Br(B^+\to K^+ \ov
K^{*0}) \approx 3 \times 10^{-7}$ and $Br(B^+\to K^{*+} \ov K^0) \approx 18.3
\times 10^{-7}$, which are consistent with currently available experimental
upper limits. We also predict large CP-violating asymmetries in these decays:
$A_{CP}^{dir}(K^\pm \ov K^{*0})\approx -20 %$, $A_{CP}^{dir}(K^{*\pm} \ov
K^0)\approx -49%$, which can be tested by the forthcoming B meson experiments.


title: Implications of new data in charmless B decays

abstract:
  Based on the latest experimental data of $B \to \pi\pi$ and $\pi K$ modes, a
model-independent analytical analysis is presented. The CP-averaged branching
ratio difference $\Delta R = R_c - R_n$ in $B\to \pi K$ decays with $R_c =
2Br(\pi^0K^-)/Br(\pi^-\bar{K}^0)$ and $R_n =Br(\pi^+K^-)/2Br(\pi^0\bar{K}^0)$
is reduced though it remains larger than the prediction from the standard
model(SM) as both measured $R_n$ and $R_c$ are enhanced, which indicates that a
room for new physics becomes smaller. The present data of $\pi\pi$ decay reduce
the ratio $|C/T|$ from the previous value of $|C/T|\simeq 0.8 $ to $|C/T|
\simeq 0.65$, which is still larger than the theoretical estimations based on
QCD factorization and pQCD. Within SM and flavor SU(3) symmetry, the current
$\pi K$ data also diminish the ratio $|C'/T'|$ from the previous value $|C'/T'|
\simeq 2$ to $|C'/T'| \simeq 1.16$ with a large strong phase $\delta_{C'}
\simeq -2.65$, while its value remains much larger than the one extracted from
the $\pi \pi$ modes. The direct CP violation $A_{CP}(\pi^0\bar{K}^0)$ is
predicted to be $A_{CP}(\pi^0\bar{K}^0) = -0.15\pm0.03$, which is consistent
with the present data. Two kinds of new effects in both strong and weak phases
of the electroweak penguin diagram are considered. It is found that both cases
can reduce the ratio to $|C'/T'| = 0.40\sim 0.80$ and lead to roughly the same
predictions for CP violation in $\pi^0 K^0$.


title:
Reducing full one-loop amplitudes to scalar integrals at the integrand
  level

abstract:
  We show how to extract the coefficients of the 4-, 3-, 2- and 1-point
one-loop scalar integrals from the full one-loop amplitude of arbitrary
scattering processes. In a similar fashion, also the rational terms can be
derived. Basically no information on the analytical structure of the amplitude
is required, making our method appealing for an efficient numerical
implementation


title: Vector susceptibility and chiral phase transition in AdS/QCD Models

abstract: Withdrawn: replaced by e-Print: arXiv:0810.0063 [hep-ph]


title: Lightest scalars as chiral partners of the Nambu--Goldstone bosons

abstract:
  We review the spectrum of lightest scalar resonances recently determined
using dispersion techniques. The conceptual difference between the pole mass
and the bare mass (or the line--shape mass) is stressed. The nature of the
lightest scalars are discussed and we argue, without relying on any model
details, that the $\sigma(500)$, $\kappa(700)$, $a_0(980)$ and $f_0(980)$ may
be understood as chiral partners of the Nambu--Goldstone bosons in the linear
realization of chiral symmetry. But there remains some difficulties in
understanding the role of $f_0(980)$ in this picture.


title:
On the extraction of the quark mass ratio (m_d - m_u)/m_s from
  Gamma(eta' -> pi^0 pi^+ pi^-)/Gamma(eta' -> eta pi^+ pi^-)

abstract:
  The claim that the light quark mass ratio (m_d - m_u)/m_s can be extracted
from the decay width ratio Gamma(eta' -> pi^0 pi^+ pi^-)/Gamma(eta' -> eta pi^+
pi^-) is critically investigated within a U(3) chiral unitary framework. The
influence of the recent VES data on the eta' -> eta pi^+ pi^- decay is also
discussed.


title: NOvA and T2K: The race for the neutrino mass hierarchy

abstract:
  The determination of the ordering of the neutrino masses (the hierarchy) is
probably a crucial prerequisite to understand the origin of lepton masses and
mixings and to establish their relationship to the analogous properties in the
quark sector. Here, we follow an alternative strategy to the usual
neutrino--antineutrino comparison in long baseline neutrino oscillation
experiments: we exploit the combination of the neutrino-only data from the NOvA
and the T2K experiments by performing these two off-axis experiments at
different distances but at the same $<E >/L$, where $<E >$ is the mean neutrino
energy and $L$ is the baseline. This would require a minor adjustment to the
proposed off-axis angle for one or both of the proposed experiments.


title: Avoiding an Empty Universe in RS I Models and Large-N Gauge Theories

abstract:
  Many proposed solutions to the hierarchy problem rely on dimensional
transmutation in asymptotically free gauge theories, and these theories often
have dual descriptions in terms of a warped extra dimension. Gravitational
calculations show that the confining phase transition in Randall-Sundrum models
is first-order and parametrically slower than the rate expected in large-N
gauge theories. This is dangerous because it leads to an empty universe
problem. We argue that this rate suppression arises from approximate conformal
symmetry. Though this empty universe problem cannot be solved by using the
radion for low-scale inflation, we argue that if the radion potential is
asymptotically free, another instanton for the RS phase transition can proceed
as $e^{-N^2}$. We also discuss the existence of light magnetic monopoles ($\sim
100$ TeV) as a possible signature of such a phase transition.


title: $D_{sJ}(2860)$ and $D_{sJ}(2715)$

abstract:
  Recently Babar Collaboration reported a new $c\bar{s}$ state $D_{sJ}(2860)$
and Belle Collaboration observed $D_{sJ}(2715)$. We investigate the strong
decays of the excited $c\bar{s}$ states using the $^{3}P_{0}$ model. After
comparing the theoretical decay widths and decay patterns with the available
experimental data, we tend to conclude: (1) $D_{sJ}(2715)$ is probably the
$1^{-}(1^{3}D_{1})$ $c\bar{s}$ state although the $1^{-}(2^{3}S_{1})$
assignment is not completely excluded; (2) $D_{sJ}(2860)$ seems unlikely to be
the $1^{-}(2^{3}S_{1})$ and $1^{-}(1^{3}D_{1})$ candidate; (3) $D_{sJ}(2860)$
as either a $0^{+}(2^{3}P_{0})$ or $3^{-}(1^{3}D_{3})$ $c\bar{s}$ state is
consistent with the experimental data; (4) experimental search of
$D_{sJ}(2860)$ in the channels $D_s\eta$, $DK^{*}$, $D^{*}K$ and
$D_{s}^{*}\eta$ will be crucial to distinguish the above two possibilities.


title: Exotic hadrons in s-wave chiral dynamics

abstract:
  We study s-wave scattering of a hadron and a Nambu-Goldstone boson induced by
the model-independent low energy interaction in the flavor SU(3) symmetric
limit. Establishing the general structure of the low energy interaction based
on group theoretical arguments, we find that the interaction in the exotic
channels are in most cases repulsive, and that for possible attractive channels
the interaction strengths are weak and uniquely given independent of channel.
Solving the scattering problem with this interaction, we show that the
attraction in the exotic channels is not strong enough to generate a bound
state from the physically known target hadrons. We also find that there are no
attractive interaction in the exotic channels in large Nc limit.


title: Dual Interpretations of Pion Clouds at RHIC

abstract:
  A gauge theory of pions interacting with rho-mesons at elevated temperatures
is used to calculate the pressure in a hot pion gas. No reference is made to
the pion's status as a QCD Goldstone boson. The role of the pion is merely that
of a carrier of an SU(2) symmetry, gauged to create a vector-meson interaction,
the rho playing the role of the interacting vector particle. The results are in
rough agreement with much more elaborate calculations, both of the purely
hadronic variety, and those that invoke quark-gluon degrees of freedom. The
quark-gluon and purely hadronic calculations seemingly lead to very similar
predictions which are in accord with receent data from RHIC. The results
motivate the question as to whether the two descriptions are dual to each other
in the sense of being alternate models, each sufficient to explain the observed
data.


title: Small Visible Energy Scalar Top Iterative Discriminant Analysis

abstract:
  Light scalar top quarks with a small mass difference with respect to the
neutralino mass are of particular cosmological interest. This study uses an
Iterative Discriminant Analysis method to optimize the expected selection
efficiency at a International Linear Collider (ILC).


title: A standard format for Les Houches Event Files

abstract:
  A standard file format is proposed to store process and event information,
primarily output from parton-level event generators for further use by
general-purpose ones. The information content is identical with what was
already defined by the Les Houches Accord five years ago, but then in terms of
Fortran commonblocks. This information is embedded in a minimal XML-style
structure, for clarity and to simplify parsing.


title: Minkowski space structure of the Higgs potential in 2HDM

abstract:
  The Higgs potential of 2HDM keeps its generic form under the group of
transformation GL(2,C), which is larger than the usually considered
reparametrization group U(2). This reparametrization symmetry induces the
Minkowski space structure in the orbit space of 2HDM. Exploiting this property,
we present a geometric analysis of the number and properties of stationary
points of the most general 2HDM potential. In particular, we prove that
charge-breaking and neutral vacua never coexist in 2HDM and establish
conditions when the most general explicitly CP-conserving Higgs potential has
spontaneously CP-violating minima. Our analysis avoids manipulation with
high-order algebraic equations.


title: Confinement Driven by Scalar Field in 4d Non Abelian Gauge Theories

abstract:
  We review some of the most recent work on confinement in 4d gauge theories
with a massive scalar field (dilaton). Emphasis is put on the derivation of
confining analytical solutions to the Coulomb problem versus dilaton effective
couplings to gauge terms. It is shown that these effective theories can be
relevant to model quark confinement and may shed some light on confinement
mechanism. Moreover, the study in the heavy meson sector of an interquark
potential derived from Dick Model, proves that phenomenological investigation
of this mechanism is more than justified and deserves more efforts.


title: Pion and Kaon Condensation at Finite Temperature and Density

abstract:
  In this paper, we study O(2N)-symmetric $\phi^4$-theory at finite temperature
and density using the 2PI-1/N expansion. As specific examples, we consider pion
condensation at finite isospin chemical potential and kaon condensation at
finite chemical potential for hyper charge and isospin charge. We calculate the
phase diagrams and the quasiparticle masses for pions and kaons in the large-N
limit. It is shown that the effective potential and the gap equation can be
renormalized by using local counterterms for the coupling constant and mass
parameter, which are independent of temperature and chemical potentials.


title: The forward-backward asymmetry at NNLO revisited

abstract:
  I reconsider the forward-backward asymmetry for flavoured quarks in
electron-positron annihilation. I suggest an infrared-safe definition of this
observable, such that the asymmetry may be computed in perturbative QCD with
massless quarks. With this definition, the first and second order QCD
corrections are computed.


title:
Parametric resonance for antineutrino conversions using LSND best-fit
  results with a 3+1 flavor scheme

abstract:
  An analytical solution to a parametric resonance effect for antineutrinos in
a 3+1 flavor (active+sterile) scheme using multiple non-adiabatic density
shifts is presented. We derive the conditions for a full flavor conversion for
antineutrino oscillations $\bar{\nu}_\alpha \to \bar{\nu}_s$
$(\alpha=e,\mu,\tau)$ under the assumption that LSND best-fits for the mixing
parameters are valid in a short-baseline accelerator experiment. We show that
the parametric resonance effect can be exploited to increase the effective
antineutrino oscillation length by a factor of 10-40, thus sustaining a high
oscillation probability for a much longer period of time than in the vacuum
scenario. We propose a realistic experimental setup that could probe for this
effect which leaves a signature in terms of a specific oscillation probability
profile. Moreover, since the parametric resonance effect is valid in any 2 or
1+1 flavor approximation, our results could be suggestive for future
short-baseline accelerator neutrino detection experiments.


title: Jet Tomography in the Forward Direction at RHIC

abstract:
  Hadron production at high-$p_T$ displays a strong suppression pattern in a
wide rapidity region in heavy ion collisions at RHIC energies. This finding
indicates the presence of strong final state effects for both transversally and
longitudinally traveling partons, namely induced energy loss. We have developed
a perturbative QCD based model to describe hadron production in $pp$ collision,
which can be combined with the Glauber -- Gribov model to describe hadron
production in heavy ion collisions. Investigating $AuAu$ and $CuCu$ collisions
at energy $\sqrt{s}=200$ $A$GeV at mid-rapidity, we find the opacity of the
strongly interacting hot matter to be proportional to the participant nucleon
number. Considering forward rapidities, the suppression pattern indicates the
formation of a longitudinally contracted dense deconfined zone in central heavy
ion collisions. We determine parameters for the initial geometry from the
existing data.


title: Small Strange Quark Content of Protons

abstract:
  The contribution of strange sea quarks to the proton mass and spin, as well
as the related pion-nucleon sigma term, are briefly revisited, in the light of
new experimental and lattice results. Also the predictions of chiral
perturbation theory for these quantities are discussed.


title:
Decay of heavy Majorana neutrinos using the full Boltzmann equation
  including its implications for leptogenesis

abstract:
  We have studied the two-body production and decay of a heavy, right-handed
neutrino to two light states using the full Boltzmann equation instead of the
usual integrated Boltzmann equation which assumes kinetic equilibrium of all
species. Decays and inverse decays are inefficient for thermalising the
distribution function of the heavy neutrino and in some parameter ranges there
can be very large deviations from kinetic equilibrium. This leads to
substantial numerical differences between the two approaches. Furthermore we
study the impact of this difference on the lepton asymmetry production during
leptogenesis and find that in the strong washout regime the final asymmetry is
changed by 15-30% when the full Boltzmann equation is used.


title: Meson-octet-baryon couplings using light cone QCD sum rules

abstract:
  The coupling constants of K and pi mesons with the octet baryons are studied
in light cone QCD sum rules taking into account SU(3)f flavor symmetry breaking
effects, but keeping the SU(2) isospin symmetry intact. It is shown that, in
the SU(3)f flavor symmetry breaking case, all of the couplings can be written
in terms of four universal functions instead of F and D couplings which exist
in the SU(3)f symmetry case. A comparison of our results of kaon and
pion-baryon couplings with existing theoretical and experimental results in the
literature is performed.


title: Proton structure functions and quark orbital motion

abstract:
  Covariant version of the quark-parton model is studied. Dependence of the
structure functions on the 3D quark intrinsic motion is discussed. The
important role of the quark orbital momentum, which is a particular case of
intrinsic motion, appears as a direct consequence of the covariant description.
Effect of orbital motion is substantial especially for polarized structure
functions. At the same time, the procedure for obtaining the quark momentum
distribution from the structure functions is suggested.


title:
Anomalous fermion number nonconservation: Paradoxes in the level
  crossing picture

abstract:
  In theories with anomalous fermion number nonconservation, the level crossing
picture is considered a faithful representation of the fermionic quantum number
variation. It represents each created fermion by an energy level that crosses
the zero-energy line from below. If several fermions of various masses are
created, the level crossing picture contains several levels that cross the
zero-energy line and cross each other. However, we know from quantum mechanics
that the corresponding levels cannot cross if the different fermions are mixed
via some interaction potential. The simultaneous application of these two
requirements on the level behavior leads to paradoxes. For instance, a naive
interpretation of the resulting level crossing picture gives rise to charge
nonconservation. In this paper, we resolve this paradox by a precise
calculation of the transition probability, and discuss what are the
implications for the electroweak theory. In particular, the nonperturbative
transition probability is higher if top quarks are present in the initial
state.


title:
The observability of an additional discrete symmetry in the Standard
  Model

abstract:
  Standard Model may be defined with the additional discrete symmetry, i.e.
with the gauge group $SU(3)\times SU(2) \times U(1)/{\cal Z}$ (${\cal Z} =
Z_6$, $Z_3$ or $Z_2$) instead of the usual $SU(3)\times SU(2) \times U(1)$. It
has the same perturbation expansion as the conventional one. However, it may
describe nature in a different way at the energies compared to the triviality
bound (of about 1 Tev). In this paper we present a possibility to observe this
difference assuming that the gauge group of the Standard Model is embedded into
the gauge group of an {\it a priory} unknown model, which describes physics at
a Tev scale. This difference is related to the monopole content of the theory.
We illustrate our results by consideration of the Petite Unification of quarks
and leptons.


title: Probing the Temperature Profile of Energy Production in the Sun

abstract:
  The particle kinetic energies of pp fusion in the sun (Gamow Energy) produce
small changes in the energies of pp solar neutrinos relative to those due only
to exothermal energetics. Observation of this effect may be possible via the
unique tools of the upcoming LENS solar neutrino detector. The temperature
profile of energy production in the sun may thus be directly probed for the
first time.


title: Getting the most from NOvA and T2K

abstract:
  The determination of the ordering of the neutrino masses (the hierarchy) is
probably a crucial prerequisite to understand the origin of lepton masses and
mixings and to establish their relationship to the analogous properties in the
quark sector. In this talk, we follow an alternative strategy to the usual
neutrino--antineutrino comparison: we exploit the combination of the
neutrino-only data from the NOvA and the T2K experiments by performing these
two off-axis experiments at different distances but at the same $<E >/L$, $<E>$
being the mean neutrino energy and $L$ the baseline. This would require a minor
adjustment to the proposed off-axis angle for one or both of the proposed
experiments.


title: On V_ud determination from kaon decays

abstract:
  The pion beta decay pi^+ -> pi^0 e^+ nu proceeds through pure weak vector
hadronic currents and, therefore, the theoretical prediction for it is more
reliable than for the processes with axial-vector current contribution. For
example, recently the pion beta decay has been used for V_ud determination. The
main aim of this letter is to point that kaon beta decay K^0 -> K^+(pi^+ pi^0)
e^- nu-bar analogously can be used for this purpose.


title: NNLO splitting and coefficient functions with time-like kinematics

abstract:
  We discuss recent results on the three-loop (next-to-next-to-leading order,
NNLO) time-like splitting functions of QCD and the two-loop (NNLO) coefficient
functions in one-particle inclusive e+e- annihilation. These results form the
basis for extracting fragmentation functions for light and heavy flavors with
NNLO accuracy that will be needed at the LHC and ILC. The two-loop calculations
have been performed in Mellin space based on a new method, the main features of
which we also describe briefly.


title:
Shear Viscosity and Viscous Entropy Production in Hot QGP at Finite
  Density

abstract:
  In the framework of irreversible thermodynamics, we studied the transport
properties of QGP. Shear viscosity and non-equilibrium entropy density related
to viscous process at finite density has been investigated in weakly coupled
limit by using kinetic theory. The results show that the chemical potential
increases viscosityyet decreases the non-equilibrium entropy density and thus
contributes positively to their ratio compared to the pure temperature case. As
to the temperature dependence of the ratio, the ratio first decreases rapidly
and then increases in the physical region, presenting a minimum value of 0.4 at
the temperature around 182MeV.


title: Dynamical Gauge-Higgs Unification

abstract:
  In the dynamical gauge-Higgs unification the 4D Higgs field is unified with
gauge fields and the electroweak symmetry is dynamically broken by the Hosotani
mechanism. Interesting phenomenology is obtained in the Randall-Sundrum warped
spacetime. (i) The Higgs boson mass is predicted at the LHC energies. (ii) The
hierarchy in the fermion mass spectrum is naturally explained. (iii) Tiny
violation of the universality in the charged current interactions is predicted.
(iv) Yukawa couplings of quarks and leptons are suppressed compared with those
in the standard model. (v) $WWH$, $ZZH$ couplings are suppressed compared with
those in the standard model.


title:
Covariant light-front approach for heavy quarkonium: decay constants, P
  \to \gamma \gamma and V \to P \gamma

abstract:
  The light-front approach is a relativistic quark model and offers many
insights to the internal structures of the hadronic bound states. In this
study, we apply the covariant light-front approach to ground-state heavy
quarkonium. The pesudoscalar and vector meson decay constants are discussed. We
present a detailed study of two-photon annihilation P \to \gamma \gamma and
magnetic dipole transition V \to P \gamma processes. The numerical predictions
of the light-front approach are consistent with the experimental data and those
in other approaches. The relations of the light-front approach with the other
methods are discussed in brief.


title:
Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the
  Standard Model

abstract:
  We calculate the dominant Standard Model contributions to the time-dependent
CP asymmetry in B0->K*0 gamma, which is O(1/mb) in QCD factorisation. We find
that, including all relevant hadronic effects, in particular from soft gluons,
the asymmetry S is very small, S=-0.022\pm 0.015^{+0}_{-0.01}, and smaller than
suggested recently from dimensional arguments in a 1/mb expansion. Our result
implies that any significant deviation of the asymmetry from zero, and in
particular a confirmation of the current experimental central value,
S_{HFAG}=-0.28\pm 0.26, would constitute a clean signal for new physics.


title: Flavour-Dependent Leptogenesis with Sequential Dominance

abstract:
  We study thermal leptogenesis in classes of neutrino mass models based on the
seesaw mechanism with three right-handed neutrinos and sequential right-handed
neutrino dominance. The flavour-dependent Boltzmann equations are solved
appropriate to both the Standard Model and the Minimal Supersymmetric Standard
Model. Within these classes of models we investigate constraints and
expectations on the individual decay asymmetries and washout parameters from
the present data on neutrino masses and mixings. In many cases of physical
interest flavour effects are shown to have important consequences for the
estimation of the produced baryon asymmetry in leptogenesis. We also establish
and analyze the link between the leptonic CP violating phase $\delta$,
observable in neutrino oscillations, and the CP violation required for
leptogenesis, where flavour-dependent effects have a significant effect. In
general our results show that flavour-dependent effects cannot be ignored when
dealing with three right-handed neutrino models.


title: About Mass, CP and Extra Dimensions

abstract:
  We discuss the notion of mass, mostly for fermions, and its relation to the
breaking of CP invariance, the natural symmetry of gauge interactions. In a
first model, we show how compactification on a Vortex in 2 extra dimensions
leads to a replication of generations in 3+1, with challenging mass patterns,
and testable consequences in flavour-changing neutral currents (family-number
conserving), both at low energies and at future colliders. In different model,
we show how CP violation can result from compactification from 4+1 to 3+1
dimensions.


title:
Electromagnetic polarizabilities of the nucleon and properties of the
  $\sigma$-meson pole contribution

abstract:
  The $t$-channel contribution to the difference of electromagnetic
polarizabilities of the nucleon, $(\alpha-\beta)^t$, can be quantitatively
understood in terms of a $\sigma$-meson pole in the complex $t$-plane of the
invariant scattering amplitude $A_1(s,t)$ with properties of the $\sigma$ meson
as given by the quark-level Nambu--Jona-Lasinio model (NJL). Equivalently, this
quantity may be understood in terms of a cut in the complex $t$-plane where the
properties of the $\sigma$ meson are taken from the $\pi\pi -> \sigma ->
\pi\pi$, $\gamma\gamma -> \sigma -> \pi\pi$ and $N\bar{N} -> \sigma -> \pi\pi$
reactions. This equivalence may be understood as a sum rule where the
properties of the $\sigma$ meson as predicted by the NJL model are related to
the $f_0(600)$ particle observed in the three reactions. In the following we
describe details of the derivation of $(\alpha-\beta)^t$ making use of
predictions of the quark-level NJL model for the $\sigma$-meson mass.


title:
A new subtraction scheme for computing QCD jet cross sections at
  next-to-leading order accuracy

abstract:
  We present a new subtraction scheme for computing jet cross sections in
electron-positron annihilation at next-to-leading order accuracy in
perturbative QCD. The new scheme is motivated by problems emerging in extending
the subtraction scheme to the next-to-next-to-leading order. The new scheme is
tested by comparing predictions for three-jet event-shape distributions to
those obtained by the standard program EVENT.


title:
A subtraction scheme for computing QCD jet cross sections at NNLO:
  regularization of doubly-real emissions

abstract:
  We present a subtraction scheme for computing jet cross sections in
electron-positron annihilation at next-to-next-to-leading order accuracy in
perturbative QCD. In this first part we deal with the regularization of the
doubly-real contribution to the NNLO correction.


title:
A subtraction scheme for computing QCD jet cross sections at NNLO:
  regularization of real-virtual emission

abstract:
  We present a subtraction scheme for computing jet cross sections in
electron-positron annihilation at next-to-next-to-leading order accuracy in
perturbative QCD. In this second part we deal with the regularization of the
real-virtual contribution to the NNLO correction.


title: Masses of the \eta_c(nS) and \eta_b(nS) mesons

abstract:
  The hyperfine splittings in heavy quarkonia are studied using new
experimental data on the di-electron widths. The smearing of the spin-spin
interaction is taken into account, while the radius of smearing is fixed by the
known $J/\psi-\eta_c(1S)$ and $\psi(2S)-\eta'_c(2S)$ splittings and appears to
be small, $r_{ss} \approx 0.06$ fm. Nevertheless, even with such a small radius
an essential suppression of the hyperfine splittings ($\sim 50%)$ is observed
in bottomonium. For the $nS b\bar b$ states $(n=1,2,...6)$ the values we
predict (in MeV) are 28, 12, 10, 6, 6, and 3, respectively. In single-channel
approximation for the $3S$ and $4S$ charmonium states the splittings 16(2) MeV
and 12(4) MeV are obtained.


title: Soft Pion Emission in Hard Exclusive Pion Production

abstract:
  We investigate hard exclusive reactions on the nucleon with soft pion
emission. A parametrization of corresponding hadronic matrix elements in terms
of parton distributions for final pion-nucleon state is provided. These
distributions are calculated in terms of nucleon and pion GPDs and the pion
distribution amplitude via soft-pion theorems. Some observables for the process
of hard charged pion production on the proton with soft pion emission are
computed.


title: Interplay of type I and type II seesaw contributions to neutrino mass

abstract:
  Type I and type II seesaw contributions to the mass matrix of light neutrinos
are inherently related if left-right symmetry is realized at high energy
scales. We investigate implications of such a relation for the interpretation
of neutrino data. We proved recently that the left-right symmetric seesaw
equation has eight solutions, related by a duality property, for the mass
matrix of right-handed neutrinos $M_R$. In this paper the eight allowed
structures of $M_R$ are reconstructed analytically and analyzed numerically in
a bottom-up approach. We study the dependence of right-handed neutrino masses
on the mass spectrum of light neutrinos, mixing angle $\theta_{13}$, leptonic
CP violation, scale of left-right symmetry breaking and on the hierarchy in
neutrino Yukawa couplings. The structure of the seesaw formula in several
specific SO(10) models is explored in the light of the duality. The outcome of
leptogenesis may depend crucially on the choice among the allowed structures of
$M_R$ and on the level crossing between right-handed neutrino masses.


title: Flavour from accidental symmetries

abstract:
  We consider a new approach to fermion masses and mixings in which no special
"horizontal" dynamics is invoked to account for the hierarchical pattern of
charged fermion masses and for the peculiar features of neutrino masses. The
hierarchy follows from the vertical, family-independent structure of the model,
in particular from the breaking pattern of the Pati-Salam group. The lightness
of the first two fermion families can be related to two family symmetries
emerging in this context as accidental symmetries.


title: Selected Topics in Top Quark Physics

abstract:
  I discuss three different selected topics in top quark physics. The first
topic concerns the next-to-next-to-leading order calculation of the
hadroproduction of top quark pairs and the role of multiple polylogarithms in
this calculation. I report on an ongoing next-to-next-to-leading order
calculation of heavy quark pair production in hadron collisions where the
loop--by--loop part of the calculation is about to be completed. Calculating
the loop-by-loop part allows one to take a glimpse at the mathematical
structure of the full NNLO calculation. The loop-by-loop contributions bring in
a new class of functions introduced only eight years ago by the Russian
mathematician Goncharov called multiple polylogarithms. The second topic
concerns a next-to-leading order calculation of unpolarized top quark decays
which are analyzed in cascade fashion $t \to b + W^+$ followed by $W^+ \to l^+
+ \nu_l$. Finally, I present some next-to-leading order results on polarized
top quark decays which are analyzed in the top quark rest system.


title: Disentangling Dimension Six Operators through Di-Higgs Boson Production

abstract:
  New physics near the TeV scale can generate dimension-six operators that
modify the production rate and branching ratios of the Higgs boson. Here, we
show how Higgs boson pair production can yield complementary information on
dimension-six operators involving the gluon field strength. For example, the
invariant mass distribution of the Higgs boson pair can show the extent to
which the masses of exotic TeV-scale quarks come from electroweak symmetry
breaking. We discuss both the current Tevatron bounds on these operators and
the most promising LHC measurement channels for two different Higgs masses: 120
GeV and 180 GeV. We argue that the operators considered in this paper are the
ones most likely to yield interesting Higgs pair physics at the LHC.


title: Problems in a weakless universe

abstract:
  The fact that life has evolved in our universe constrains the laws of
physics. The anthropic principle proposes that these constraints are sometimes
very tight and can be used to explain in a sense the corresponding laws.
Recently a "disproof" of the anthropic principle has been proposed in the form
of a universe without weak interactions, but with other parameters suitably
tuned to nevertheless allow life to develop. If a universe with such different
physics from ours can generate life, the anthropic principle is undermined. We
point out, however, that on closer examination the proposed "weakless" universe
strongly inhibits the development of life in several different ways. One of the
most critical barriers is that a weakless universe is unlikely to produce
enough oxygen to support life. Since oxygen is an essential element in both
water, the universal solvent needed for life, and in each of the four bases
forming the DNA code for known living beings, we strongly question the
hypothesis that a universe without weak interactions could generate life.


title:
Planar two-loop master integrals for massive Bhabha scattering: N_f=1
  and N_f=2

abstract:
  Recent developments in the computation of two-loop master integrals for
massive Bhabha scattering are briefly reviewed. We apply a method based on
expansions of exact Mellin-Barnes representations and evaluate all planar
four-point master integrals in the approximation of small electron mass at
fixed scattering angle for the one-flavor case. The same technique is employed
to derive and evaluate also all two-loop masters generated by additional
fermion flavors. The approximation is sufficient for the determination of QED
two-loop corrections for Bhabha scattering in the kinematics planned to be used
for the luminosity determination at the ILC.


title: Soft Leptogenesis in Warped Extra Dimensions

abstract:
  We implement soft leptogenesis in a warped five dimensional scenario with two
branes on the orbifold boundaries coming from an S^{1}/Z_{2} symmetry, and
supersymmetry broken on the IR brane. The SM hypermultiplet fields (fermions
and Higgs) live in the UV brane and we allow the vector supermultiplets
corresponding to the gauge bosons and a hypermultiplet corresponding to the
right handed neutrino to live in the bulk. We assume that there are Majorana
mass terms for the right handed neutrino superfield fixed on each brane and
that there is a Yukawa term involving the right handed neutrino, the left
handed neutrino and the Higgs fixed on the UV brane. Supersymmetry is broken by
a constant ``superpotential'' on the IR brane, which induces an F-term for the
radion hypermultiplet. This F-term leads to a B-term for the right handed
sneutrinos as well as a soft SUSY breaking gaugino mass in the 4D theory for
the zero modes. The gaugino mass naturally induces an A-term for the right
handed sneutrino, left handed sneutrino and the Higgs to be formed through
gaugino mediation with a non-trivial CP violating phase. Moreover, we show that
within the context of extra dimensions, the condition of out-of-equilibrium
decay and the phenomenological constraints on the neutrino mass are both
satisfied in a natural way, for UV Majorana masses of the order of the
fundamental scale of the theory. Thus all necessary elements for soft
leptogenesis are at hand and we are able to predict a correct value for the
baryon asymmetry.


title:
Renormalized Finite Temperature phi^4 theory from the 2PI Effective
  Action

abstract:
  We present an analytical and numerical study of scalar phi^4 theory at finite
temperature with a renormalized 2-loop truncation of the 2PI effective action.


title: Algebraic evaluation of rational polynomials in one-loop amplitudes

abstract:
  One-loop amplitudes are to a large extent determined by their unitarity cuts
in four dimensions. We show that the remaining rational terms can be obtained
from the ultraviolet behaviour of the amplitude, and determine universal form
factors for these rational parts by applying reduction techniques to the
Feynman diagrammatic representation of the amplitude. The method is valid for
massless and massive internal particles. We illustrate this method by
evaluating the rational terms of the one-loop amplitudes for gg --> H, the
4-photon and 4-gluon amplitude, the amplitude for 2 photons plus 3 gluons and
the 6-photon amplitude.


title: Black Hole Cross Section at the Large Hadron Collider

abstract:
  Black hole production at the Large Hadron Collider (LHC) was first discussed
in 1999. Since then, much work has been performed in predicting the black hole
cross section. In light of the start up of the LHC, it is now timely to review
the state of these calculations. We review the uncertainties in estimating the
black hole cross section in higher dimensions. One would like to make this
estimate as precise as possible since the predicted values, or lower limits,
obtain for the fundamental Planck scale and number of extra dimensions from
experiments will depend directly on the accuracy of the cross section. Based on
the current knowledge of the cross section, we give a range of lower limits on
the fundamental Planck scale that could be obtained at LHC energies.


title:
Derivation of Covariant Dissipative Fluid Dynamics in the
  Renormalization-group Method

abstract:
  We derive generic relativistic hydrodynamical equations with dissipative
effects from the underlying Boltzmann equation in a mechanical and systematic
way on the basis of so called the renormalization-group (RG) method. A
macroscopic frame vector is introduced to specify the frame on which the
macroscopic dynamics is described. Our method is so mechanical with only few
ansatz that our method give a microscopic foundation of the available
hydrodynamical equations, and also can be applied to make a reduction of the
kinetic equations other than the simple Boltzmann equation.

categories: hep-ph cond-mat.stat-mech hep-th nucl-th physics.flu-dyn


title:
The extraction of nuclear sea quark distribution and energy loss effect
  in Drell-Yan experiment

abstract:
  The next-to-leading order and leading order analysis are performed on the
differential cross section ratio from Drell-Yan process. It is found that the
effect of next-to-leading order corrections can be negligible on the
differential cross section ratios as a function of the quark momentum fraction
in the beam proton and the target nuclei for the current Fermilab and future
lower beam proton energy. The nuclear Drell-Yan reaction is an ideal tool to
study the energy loss of the fast quark moving through cold nuclei. In the
leading order analysis, the theoretical results with quark energy loss are in
good agreement with the Fermilab E866 experimental data on the Drell-Yan
differential cross section ratios as a function of the momentum fraction of the
target parton. It is shown that the quark energy loss effect has significant
impact on the Drell-Yan differential cross section ratios. The nuclear
Drell-Yan experiment at current Fermilab and future lower energy proton beam
can not provide us with more information on the nuclear sea quark distribution.


title: 2PI renormalized effective action for gauge theories

abstract:
  We show how to perform renormalization in the framework of the 2PI effective
action for abelian gauge theories. In addition to the usual renormalization
conditions one needs to incorporate new ones in order to remove non-transverse
UV divergences in the truncated two- and four-photon functions. The
corresponding counterterms are allowed by gauge symmetry, in-medium independent
and suppressed with respect to the accuracy of the truncation.


title: Dark Matter in split extended supersymmetry

abstract:
  We consider the split extended (N=2) supersymmetry scenario recently proposed
by Antoniadis et al. [hep-ph/0507192] as a realistic low energy framework
arising from intersecting brane models. While all scalar superpartners and
charged gauginos are naturally at a heavy scale, the model low energy spectrum
contains a Higgsino-like chargino and a neutralino sector made out of two
Higgsino and two Bino states. We show that the lightest neutralino is a viable
dark matter candidate, finding regions in the parameter space where its thermal
relic abundance matches the latest determination of the density of matter in
the
  Universe by WMAP. We also discuss dark matter detection strategies within
this model: we point out that current data on cosmic-ray antimatter already
place significant constraints on the model, while direct detection is the most
promising technique for the future. Analogies and differences with respect to
the standard split
  SUSY scenario based on the MSSM are illustrated.


title: Possible Ferromagnetism in the Large N(c) and N(f) limit of quark matter

abstract:
  We consider high density quark matter in the large $\N_c$ and $\N_f$ limit
with $\N_f/\N_c$ fixed. In this limit, the color superconductivity disappears.
We discuss that the chiral density wave state is also absent in the limit, if
we assume the existence of the non-perturbative magnetic screening effect as
indicated by recent lattice study. We argue that ferromagnetism can become a
candidate for the ground state if quarks are massive.


title: Supersymmetric extra U(1) models with a singlino dominated LSP

abstract:
  We investigate phenomenology related to the neutral fields in supersymmetric
models with an extra U(1) derived from $E_6$. Our study is concentrated into
the models which have a singlino dominated neutralino as the lightest
superparticle (LSP). If such models satisfy a constraint for dark matter
derived from the WMAP data, the lightest neutral Higgs scalar, a new neutral
gauge field $Z^\prime$ and the LSP may be interesting targets for the study at
the LHC. We also discuss features of the $Z^\prime$ in the models and its
detectability at the LHC.


title:
Pseudoscalar-scalar transition form factors in covariant light front
  dynamics

abstract:
  In an explicitly covariant light-front formalism, we analyze transition form
factors between pseudoscalar and scalar mesons. Application is performed in
case of the $B \to f_0(980)$ transition in the full available transfer momentum
range $q^2$.


title:
Do stellar interferometry observations indicate UV modification of
  gravity?

abstract:
  Recently it was demonstrated that the theoretical predictions for the Planck
scale space-time fluctuations derived by the simultaneous consideration of
quantum mechanics and general relativity fail by many orders of magnitude
against the stellar interferometry observations. We propose the explanation of
this puzzle based on the short distance modification of gravity. Roughly
speaking the criterion of this modification to fit the astronomical
observations is that the gravitational radius of the mass as large as $\sim
10^{26}$kg should not exceed $\sim 10^{-36}$cm. From this point of view we
consider the modification of Newtonian inverse square law due to Yukawa type
correction and the modification due to quantum gravitational corrections
obtained in the framework of nonperturbative RG approach. The latter one does
not satisfy the required criterion for modification.


title: Gauge Coupling Unification in a 6D SO(10) Orbifold GUT

abstract:
  We consider the gauge coupling running in a six-dimensional SO(10) orbifold
GUT model. The bulk gauge symmetry is broken down to the standard model gauge
group with an extra U(1)_X by orbifold boundary conditions and the extra U(1)_X
is further broken through the U(1)_{B-L} breaking with bulk hyper multiplets.
We obtain the corrections of Kaluza-Klein massive modes to the running of the
gauge couplings and discuss their implication to the successful gauge coupling
unification.


title: Aspects of Strangeness -1 Meson-Baryon Scattering

abstract:
  We consider meson-baryon interactions in S-wave with strangeness -1. This is
a sector populated by plenty of resonances interacting in several two-body
coupled channels. We consider a large set of experimental data, where the
recent experiments are remarkably accurate. This requires a sound theoretical
description to account for all the data and we employ Unitary Chiral
Perturbation Theory up to and including O(p^2). The spectroscopy of our
solutions is studied within this approach, discussing the rise from the pole
content of two \Lambda(1405) resonances and of the \Lambda(1670),
\Lambda(1800), \Sigma(1480), \Sigma(1620) and \Sigma(1750). We finally argue
about our preferred fit.


title:
Drell-Yan production and Lam-Tung relation in the Color Glass Condensate
  formalism

abstract:
  We study the Drell-Yan production cross section and structure functions in
proton (deuteron)-nucleus collisions using the Color Glass Condensate
formalism. The nucleus is treated in the Color Glass Condensate framework which
includes both higher twist effects due to the inclusion of multiple scatterings
and leading twist pQCD shadowing due to the small x resummation, while the
proton (or deuteron) is treated within the DGLAP improved parton model. In
particular, the Drell-Yan structure functions are used in order to investigate
the Lam-Tung relation at small x, which is known to be identically zero at
leading twist up to Next-to-Leading order, and is thus a good playground for
studying higher twist effects. In agreement with this, we find that violations
of this relation are more important for low momentum and invariant mass of the
Drell-Yan pair, and also in the region of rapidity that corresponds to smaller
values of x in the nucleus.


title:
Another Look at Minimal Lepton Flavour Violation, l_i -> l_j gamma,
  Leptogenesis, and the Ratio M_nu/ Lambda_LFV

abstract:
  We analyze lepton flavour violation (LFV), as well as generation of the
observed baryon-antibaryon asymmetry of the Universe (BAU) within a generalized
minimal lepton flavour violation (MLFV) framework where we allow for CP
violation both at low and high energies. The generation of BAU is obtained
through radiative resonant leptogenesis (RRL), where starting with three
exactly degenerate right-handed neutrinos at Lambda_GUT, we demonstrate
explicitly within the SM and the MSSM that the splittings between their masses
at the see-saw scale M_nu, generated by renormalization group effects, are
sufficient for a successful leptogenesis for M_nu even as low as 10^6 GeV. The
inclusion of flavour effects plays an important role in this result and can
lead to the observed BAU even in the absence of CP violation beyond the PMNS
phases. The absence of a stringent lower bound on M_nu in this type of
leptogenesis allows to easily satisfy present and near future upper bounds on
mu -> e gamma and other charged lepton flavour violating (LFV) processes even
for Lambda_LFV = O(1 TeV). We find, that the MLFV framework in the presence of
heavy right-handed neutrinos and leptogenesis is not as predictive as MFV in
the quark sector and point out that without a specific MLFV model, there is a
rich spectrum of possibilities for charged LFV processes and for their
correlation with low energy neutrino physics and the LHC physics, even if the
constraint from the observed BAU is taken into account. While certain
qualitative features of our analysis confirm findings of Cirigliano et al., at
the quantitative level we find phenomenologically important differences. We
explain the origin of these differences.


title: Neutralino Signatures of the Singlet Extended MSSM

abstract:
  Extending the Higgs sector of the MSSM by the addition of a gauge singlet
scalar field can remedy the mu problem. We explore the implications of extended
models for both the spectrum of the neutralinos and the cascade decays of the
neutralinos and charginos. Extra steps due to light decoupled neutralinos in
the cascade decays of both neutralinos and charginos allow an excess of
trilepton events compared to the MSSM and the existence of events with higher
lepton multiplicity. Additionally, displaced vertices of the chi_2^0 due to
small decay widths in some models may be observable.


title:
Rare Decay of the Top t->c l lbar and Single Top Production at
  International Linear Collider

abstract:
  We perform a complete and detailed analysis of the flavor changing neutral
current rare top quark decays t-> cl+l- and t->c nu_i bar nu_i at one-loop
level in the Standard Model, Two Higgs Doublet Models (I and II) and in MSSM.
The branching ratios are very small in all models, O(10^-14), except for the
case of the unconstrained MSSM, where they can reach O(10^-6) for e+e- and nu_i
bar nu_i, and O(10^-5) for tau+ tau-. This branching ratio is comparable to the
ones for t-> c V, cH. We also study the production rates of single top and the
forward-backward asymmetry in e+e- -> t cbar and comment on the observability
of such a signal at the International Linear Collider.


title:
Electroweak gauge boson production at hadron colliders through
  O(alpha_s^2)

abstract:
  We describe a calculation of the O(alpha_s^2) QCD corrections to the fully
differential cross section for W and Z boson production in hadronic collisions.
The result is fully realistic in that it includes spin correlations, finite
width effects, gamma-Z interference and allows for the application of arbitrary
cuts on the leptonic decay products of the W and Z. We have implemented this
calculation into a numerical program. We demonstrate the use of this code by
presenting phenomenological results for several future LHC analyses and recent
Tevatron measurements, including the W cross section in the forward rapidity
region and the central over forward cross section ratio.


title: Final state interactions in B --> pi pi K and B--> K antiK K decays

abstract:
  Analysis of charged and neutral B meson decays into pi+ pi- K, K+ K- K and
K0S K0S K0S is performed using a unitary representation of the pi pi and K
anti- K final state interactions. Comparison of the theoretical model with the
experimental data of the Belle and BaBar Collaborations indicates that charming
penguin contributions are necessary to describe the B --> f0(980) K and B -->
rho(770) K decays.


title: Two topics for a discussion on the $b \bar s$ and $b \bar q$ systems

abstract:
  The analysis of the $b \bar s$ system is an important issue in the Physics
programs of the hadron colliders. We discuss two different topics: the
structure of the orbitally excited states and prediction of the rates of a
class of non leptonic $B_s$ decays.


title: Threshold resummation of Drell-Yan rapidity distributions

abstract:
  We present a derivation of the threshold resummation formula for the
Drell-Yan rapidity distribution. Our argument is valid for all values of
rapidity and to all orders in perturbative QCD and can be applied to all
Drell-Yan processes in a universal way, i.e. both for the production of a
virtual photon \gamma^{*} and the production of a vector boson W^{\pm}, Z^{0}.
We show that for the fixed-target experiment E866/NuSea used in current parton
fits, the NLL resummation corrections are comparable to NLO fixed-order
corrections and are crucial to obtain agreement with the data.


title: Azimuthal Dependence of the Heavy Quark Initiated Contributions to DIS

abstract:
  We analyze the azimuthal dependence of the heavy-quark-initiated
contributions to the lepton-nucleon deep inelastic scattering (DIS). First we
derive the relations between the parton level semi-inclusive structure
functions and the helicity $\gamma^{*}Q$ cross sections in the case of
arbitrary values of the heavy quark mass. Then the azimuth-dependent ${\cal
O}(\alpha_{s})$ lepton-quark DIS is calculated in the helicity basis. Finally,
we investigate numerically the properties of the $\cos\phi$ and $\cos2\phi$
distributions caused by the photon-quark scattering (QS) contribution. It turns
out that, contrary to the basic photon-gluon fusion (GF) component, the QS
mechanism is practically $\cos2\phi$-independent. This fact implies that
measurements of the azimuthal distributions in charm leptoproduction could
directly probe the charm density in the proton.


title: Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC

abstract:
  Deviations from SM expectations in the Higgs sector can be parameterized by
an effective Lagrangian. The corresponding anomalous couplings have been
implemented in a Monte Carlo program for Higgs production in vector boson
fusion, at NLO QCD accuracy. It allows to study anomalous coupling effects for
production and decay of the Higgs boson. We analyze deviations allowed by LEP
data and study a new azimuthal angle variable which directly measures the
interference between CP-even, CP-odd and SM couplings.


title: A Solution for Little Hierarchy Problem and b --> s gamma

abstract:
  We show that all the parameters which destabilize the weak scale can be taken
around the weak scale in the MSSM without conflicting with the SM Higgs mass
bound set by LEP experiment. The essential point is that if the lightest
CP-even Higgs h in the MSSM has only a small coupling to Z boson, g_{ZZh}, LEP
cannot generate the Higgs sufficiently. In the scenario, the SM Higgs mass
bound constrains the mass of the heaviest CP-even Higgs H which has the SM like
g_{ZZH} coupling. However, it is easier to make the heaviest Higgs heavy by the
effect of off-diagonal elements of the mass matrix of the CP-even Higgs because
the larger eigenvalue of 2 times 2 matrix becomes larger by introducing
off-diagonal elements. Thus, the smaller stop masses can be consistent with the
LEP constraints. Moreover, the two excesses observed at LEP Higgs search can
naturally be explained as the signals of the MSSM Higgs h and H in this
scenario. One of the most interesting results in the scenario is that all the
Higgs in the MSSM have the weak scale masses. For example, the charged Higgs
mass should be around 130 GeV. This looks inconsistent with the lower bound
obtained by the b --> s gamma process as m_{H^\pm}>350GeV. However, we show
that the amplitude induced by the charged Higgs can naturally be compensated by
that of the chargino if we take the mass parameters by which the little
hierarchy problem can be solved. The point is that the both amplitudes have the
same order of magnitudes when all the fields in the both loops have the same
order of masses.


title: Hadron multiplicities in e+e- annihilation with heavy primary quarks

abstract:
  The multiple hadron production in the events induced by the heavy primary
quarks in $e^+e^-$ annihilation is reconsidered with account of corrected
experimental data. New value for the multiplicity in $b\bar{b}$ events is
presented on the basis of pQCD estimates.


title: Direct Detection Rates of Dark Matter Coupled to Dark Energy

abstract:
  We investigate the effect of a coupling between dark matter and dark energy
on the rates for the direct detection of dark matter. The magnitude of the
effect depends on the strength $\kappa$ of this new interaction relative to
gravity. The resulting isothermal velocity distribution for dark matter in
galaxy halos is still Maxwell-Boltzmann (M-B), but the characteristic velocity
and the escape velocity are increased by $\sqrt{1+\kappa^2}$. We adopt a
phenomenological approach and consider values of $\kappa$ near unity. For such
values we find that: (i) The (time averaged) event rate increases for light
WIMPs, while it is somewhat reduced for WIMP masses larger than 100 GeV. (ii)
The time dependence of the rate arising from the modulation amplitude is
decreased compared to the standard M-B velocity distribution. (iii) The average
and maximum WIMP energy increase proportionally to $1+\kappa^2$, which, for
sufficiently massive WIMPs, allows the possibility of designing experiments
measuring $\gamma$ rays following nuclear de-excitation.


title: Light MSSM Higgs boson scenario and its test at hadron colliders

abstract:
  We show that in the Minimal Supersymmetric Standard Model, the possibility
for the lightest CP-even Higgs boson to be lighter than $Z$ boson (as low as
about 60 GeV) is, contrary to the usual belief, not yet excluded by LEP2 data
or any other existing experimental data. The characteristic of the light Higgs
boson scenario (LHS) is that the $ZZh$ coupling and the decay branching ratio
${\rm Br}(h/A\to b\bar{b})$ are simultaneously suppressed as a result of
generic supersymmetric loop corrections. Consequently, the $W^\pm H^\mp h$
coupling has to be large due to the sum rule of Higgs couplings to weak gauge
bosons. In addition to discussing the potential of the Tevatron and
$B$-factories to test the LHS, we show that the associate neutral and charged
Higgs boson production process, $pp\to H^\pm h (A)$, can completely probe LHS
at the CERN Large Hadron Collider.


title: Single-Spin Observables and Orbital Structures in Hadronic Distributions

abstract:
  Within the light-quark sector of the standard model, P-odd observables are
generated from point-like electroweak processes while A_t- odd observables
(neglecting quark mass parameters) come from dynamic spin-orbit correlations
within hadrons or within larger composite systems, such as nuclei. The effects
of A_t-odd dynamics can be inserted into transverse-momentum dependent
constituent distribution functions and, in this paper, we construct the
contribution from an orbital quark to the A_t odd quark parton distribution.
Using this distribution, we examine the crucial role of initial- and
final-state interactions in the observation of the scattering asymmetries in
different hard-scattering processes. This construction provides a geometrical
and dynamical interpretation of the Collins conjugation relation between
single-spin asymmetries in semi-inclusive deep inelastic scattering and the
asymmetries in Drell-Yan production. Finally, our construction allows us to
display a significant difference between the calculation of a spin asymmetry
generated by a hard scattering mechanism involving color-singlet exchange (such
as a photon) and a calculation of an asymmetry with a hard-scattering exchange
involving gluons. This leads to an appreciation of the process dependence
inherent in measurements of single-spin observables.


title:
Sterile neutrinos, dark matter, and the pulsar velocities in models with
  a Higgs singlet

abstract:
  We identify the range of parameters for which the sterile neutrinos can
simultaneously explain the cosmological dark matter and the observed velocities
of pulsars. To satisfy all cosmological bounds, the relic sterile neutrinos
must be produced sufficiently cold. This is possible in a class of models with
a gauge-singlet Higgs boson coupled to the neutrinos. Sterile dark matter can
be detected by the x-ray telescopes. The presence of the singlet in the Higgs
sector can be tested at the Large Hadron Collider.


title:
Study of scalar mesons f_0(980) and f_0(1500) from $B \to f_0(980) K$
  and $B \to f_0(1500) K$ Decays

abstract:
  Within perturbative QCD approach based on $k_T$ factorization, we analyze the
scalar mesons $f_0(980)$ and $f_0(1500)$ productions in B decays. By
identifying $f_0(980)$ as the composition of $\bar ss$ and $\bar nn=(\bar
uu+\bar dd)/\sqrt2$, we calculate the exclusive decays $B\to f_0(980) K$. We
find that the non-factorization $f_0$-emission diagrams can give larger
contribution to the branching ratio, than the previous PQCD calculation. Our
new results can explain the current experimental data well. Under the
assumption of quarkonium dominance, we study the branching ratio of decays
$B\to f_0(1500) K$. The results show that in the two-quark picture of $f_0$
meson the contribution from $\bar s s$ component is at the similar size as that
from the $\bar n n$ component. Comparing with the data, our results show the
preference of $f_0(1500)$ as a member of the ground state of scalar $\bar qq$
nonet. Similar results can also apply to $f_0(1370)$ and $f_0(1710)$, if these
mesons are dominated by the quarkonium content. With more experimental data in
future, these studies will help us understand the intrinsic characters of these
scalar mesons.


title:
Single transverse-spin asymmetries in forward pion production at high
  energy: incorporating small-x effects in the target

abstract:
  We consider single-inclusive forward pion production in high-energy
proton-proton collisions at RHIC energies. A good baseline description of the
transverse momentum distributions at high rapidity is obtained within Mueller's
dipole formalism with an anomalous dimension incorporating an ``extended
geometric scaling'' window between the saturation and DGLAP regimes. We then
formulate pion production for transversely polarized projectiles within the
same approach. We assume that an azimuthal, spin-dependent asymmetry arises
from the so-called Sivers effect and investigate the single transverse-spin
asymmetry A_N at 200 GeV and 500 GeV center-of-mass energy. A simple
parameterization of the Sivers functions from the literature compares
reasonably well with the high-energy STAR data if the overall normalization is
scaled up by at least a factor of two. The STAR data might therefore indicate
that the Sivers effect is significantly stronger than thought so far. We also
analyze higher-twist contributions to A_N and find that they largely cancel.


title: One-Loop Renormalization of Pure Yang-Mills with Lorentz Violation

abstract:
  The explicit one-loop renormalizability of pure Yang-Mills theory with
Lorentz violation is demonstrated. The result is consistent with multiplicative
renormalization as the required counter terms are consistent with a single
re-scaling of the Lorentz-violation parameters. In addition, the resulting beta
functions indicate that the CPT-even Lorentz-violating terms increase with
energy scale in opposition to the asymptotically free gauge coupling and
CPT-odd terms. The calculations are performed at lowest-order in the
Lorentz-violating terms as they are assumed small.


title: The Off-forward Quark-Quark Correlation Function

abstract:
  The properties of the non-forward quark-quark correlation function are
examined. We derive constraints on the correlation function from the
transformation properties of the fundamental fields of QCD occurring in its
definition. We further develop a method to construct an ansatz for this
correlator. We present the complete leading order set of generalized parton
distributions in terms of the amplitudes of the ansatz. Finally we conclude
that the number of independent generalized parton helicity changing
distributions is four.


title: Complex Hybrid Inflation and Baryogenesis

abstract:
  We propose a hybrid inflation model with a complex waterfall field which
contains an interaction term that breaks the U(1) global symmetry associated to
the waterfall field charge. We show that the asymmetric evolution of the real
and imaginary parts of the complex field during the phase transition at the end
of inflation translates into a charge asymmetry. The latter strongly depends on
the vev of the waterfall field, which is well constrained by diverse
cosmological observations.


title:
Running coupling and power corrections in nonlinear evolution at the
  high--energy limit

abstract:
  A main feature of high-energy scattering in QCD is saturation in the number
density of gluons. This phenomenon is described by non-linear evolution
equations, JIMWLK and BK, which have been derived at leading logarithmic
accuracy. In this paper we generalize this framework to include running
coupling corrections to the evolution kernel. We develop a dispersive
representation of the dressed gluon propagator in the background of Weiszacker
Williams fields and use it to compute O(beta_0^{n-1} alpha_s^n) corrections to
the kernel to all orders in perturbation theory. The resummed kernels present
infrared-renormalon ambiguities, which are indicative of the form and
importance of non-perturbative power corrections. We investigate numerically
the effect of the newly computed perturbative corrections as well as the power
corrections on the evolution and find that at present energies they are both
significant.


title:
Small-x neutrino-hadron structure functions within the QCD color dipole
  picture

abstract:
  We present an exploratory QCD analysis of the neutrino structure functions in
charged current DIS using the color dipole formalism. The dipole cross sections
are taken from recent phenomenological/theoretical studies in deep inelastic
inclusive production. The theoretical predictions are compared to the available
experimental results in the small-x region, which has never been considered so
far.


title: Determination of gamma from Charmless B --> M1 M2 Decays Using U-Spin

abstract:
  In our previous paper we applied U-spin symmetry to charmless hadronic B+-
--> M0 M+- decays for the purpose of precise extraction of the unitarity angle
gamma. In this paper we extend our approach to neutral B0 and Bs --> M1 M2
decays. A very important feature of this method is that no assumptions
regarding relative sizes of topological decay amplitudes need to be made. As a
result, this method avoids an uncontrollable theoretical uncertainty that is
often related to the neglect of some topological diagrams (e.g., exchange and
annihilation graphs) in quark-diagrammatic approaches. In charged B+- decays,
each of the four data sets, P0 P+-, P0 V+-, V0 P+- and V0 V+-, with
P=pseudoscalar and V=vector, can be used to obtain a value of gamma. Among
neutral decays, only experimental data in the B0, Bs --> P- P+ subsector is
sufficient for a U-spin fit. Application of the U-spin approach to the current
charged and neutral B decay data yields: gamma=(80^{+6}_{-8}) degrees. In this
method, which is completely data driven, in a few years we should be able to
obtain a model independent determination of gamma with an accuracy of O(few
degrees).


title: Triumvirate of Running Couplings in Small-x Evolution

abstract:
  We study the inclusion of running coupling corrections into the non-linear
small-x JIMWLK and BK evolution equations by resumming all powers of alpha_s
N_f in the evolution kernels. We demonstrate that the running coupling
corrections are included in the JIMWLK/BK evolution kernel by replacing the
fixed coupling constant alpha_s in it with alpha_s (1/r_1^2) alpha_s (1/r_2^2)
/ alpha_s (1/R^2), where r_1 and r_2 are transverse distances between the
emitted gluon and the harder gluon (or quark) off of which it was emitted to
the left and to the right of the interaction with the target. In the formalism
of Mueller's dipole model r_1 and r_2 are the transverse sizes of ``daughter''
dipoles produced in one step of the dipole evolution. The scale R is a function
of two-dimensional vectors r_1 and r_2, the exact form of which is
scheme-dependent. We propose using a particular scheme which gives us R as an
explicit function of r_1 and r_2.


title:
Hadronic Transition chi(c1)(1P) to eta(c) plus two pions at the Beijing
  Spectrometer BES and the Cornell CLEO-c

abstract:
  Hadronic transitions of the chi(cj)(1P) states have not been studied yet. We
calculate the rate of the hadronic transition chi(c1)(1P) to eta(c) plus two
pions in the framework of QCD multipole expansion. We show that this process
can be studied experimentally at the upgraded Beijing Spectrometer BES III and
the Cornell CLEO-c.


title: General thoughts to the Kaon pair production in the threshold region

abstract:
  Simple--minded thoughts about the cross sections for the reactions
pp-->ppK+K- and pp-->ppK0K0 are presented, which certainly do not account for
the complex coupled channel problem but rather provide some ideas into the
mutual reaction dynamics.


title: Neutrino masses and electroweak symmetry breaking

abstract:
  Neutrino mass generation may affect the basic structure of the electroweak
symmetry breaking sector. We consider a broad class of elementary particle
theories where neutrinos get mass at a low mass scale. We show how these can be
made natural up to few TeV or so, in the absence of supersymmetry or other
possible stabilizing mechanisms. Although the standard signatures for which LHC
has been optimized are absent, others are expected. A generic one among these
is the possibility of an invisibly decaying Higgs boson which is characteristic
of models with spontaneous breaking of lepton number symmetry below TeV or so.


title: Probing long-range leptonic forces with solar and reactor neutrinos

abstract:
  In this work we study the phenomenological consequences of the existence of
long-range forces coupled to lepton flavour numbers in solar neutrino
oscillations. We study electronic forces mediated by scalar, vector or tensor
neutral bosons and analyze their effect on the propagation of solar neutrinos
as a function of the force strength and range. Under the assumption of one mass
scale dominance, we perform a global analysis of solar and KamLAND neutrino
data which depends on the two standard oscillation parameters, \Delta m^2_{21}
and \tan^2\theta_{12}, the force coupling constant, its range and, for the case
of scalar-mediated interactions, on the neutrino mass scale as well. We find
that, generically, the inclusion of the new interaction does not lead to a very
statistically significant improvement on the description of the data in the
most favored MSW LMA (or LMA-I) region. It does, however, substantially improve
the fit in the high-\Delta m^2 LMA (or LMA-II) region which can be allowed for
vector and scalar lepto-forces (in this last case if neutrinos are very
hierarchical) at 2.5\sigma. Conversely, the analysis allows us to place
stringent constraints on the strength versus range of the leptonic interaction.


title: Lepton Flavor Violation in Little Higgs Model with T-Parity

abstract:
  If neutrino mass and mixing consistent with the neutrino oscillation data are
the only source of lepton flavor violation (LFV)in nature, the other LFV decays
like the radiative and semileptonic decays would be too small to be observed
experimentally in the foreseeable future. These decays have been the objects of
recent Belle measurments. We analyze LFV in Little Higgs Model with T-parity
and find that with reasonable values of the model parameters, these decays can
very well be experimentally observable.


title: Variational Method for Photon Emission from Quark-Gluon Plasma

abstract:
  Variational method has been applied to estimate Landau-Pomeranchuk-Migdal
(LPM) effects on virtual photon emission from the quark gluon plasma as a
function of photon mass. The variational method was well tested for the LPM
effects in real photon emission by Arnold et. al., For virtual photons, LPM
effects arising from multiple scatterings of quarks in the plasma are
determined by the integral equations for the transverse vector function (${\bf
\tilde{f}(\tilde{p}_\perp)}$) and the longitudinal function ($\tilde{g}({\bf
\tilde{p}_\perp})$). We extended the variational method to solve these
transverse and longitudinal equations for a variable set \{$p_0,q_0,Q^2$\},
considering bremsstrahlung and $\bf aws$ processes. We solved these equations,
also by the self consistent iterations for comparing with the results of
variational method. In order to estimate the variational parameter, we obtained
empirical fits for the peak positions of the ${\bf
p_\perp\cdot\tilde{f}(\tilde{p}_\perp)}$, $p_\perp\tilde{g}({\bf
\tilde{p}_\perp})$ distributions from iteration method. We propose that the
optimized variational parameter for virtual photon emission is approximately
equal to these empirical peak position values. The detailed study showed that
the variational method gives reliable results for LPM effects on virtual photon
emission for photon virtuality of the order $Q^2/T^2\le 100$. At low $Q^2$, the
peak positions for $\tilde{p}_\perp$ distributions of transverse vector
functions for virtual photons nearly coincide with the peak positions of
corresponding distributions of real photons. We calculated imaginary part of
photon retarded polarization tensor as a function of $Q^2/T^2$ using empirical
variational parameters.


title: Particle Physics: a Progress Report

abstract:
  We present a concise review of where we stand in particle physics today.
First we discuss QCD, then the electroweak sector and finally the motivations
and the avenues for new physics beyond the Standard Model.


title: Inhomogeneity driven by Higgs instability in gapless superconductor

abstract:
  The fluctuations of the Higgs and pseudo Nambu-Goldstone fields in the 2SC
phase with mismatched pairing are described in the nonlinear realization
framework of the gauged Nambu--Jona-Lasinio model. In the gapless 2SC phase,
not only Nambu-Goldstone currents can be spontaneously generated, but the Higgs
field also exhibits instablity. The Nambu-Goldstone currents generation
indicates the formation of the single plane wave LOFF state and breaks rotation
symmetry, while the Higgs instability favors spatial inhomogeneity and breaks
translation invariance. In this paper, we focus on the Higgs instability which
has not drawn much attention yet. The Higgs instability cannot be removed
without a long range force, thus it persists in the gapless superfluidity and
induces phase separation. In the case of g2SC state, the Higgs instability can
only be partially removed by the electric Coulomb energy. However, it is not
excluded that the Higgs instability might be completely removed in the charge
neutral gCFL phase by the color Coulomb energy.


title: The last of the seven-parton tree amplitudes

abstract:
  We compute the four-quark plus three-gluon and six-quark plus one-gluon tree
level amplitudes using on-shell recursion relations. They are needed for the
calculation of the 5-jet cross-section at the Born level, and constitute an
essential ingredient for next-to-leading order 4-jet and
next-to-next-to-leading order 3-jet production at hadronic colliders. Very
compact expressions for all possible helicity configurations are provided,
allowing direct implementation in computer codes. With the results presented in
this paper, the full set of seven-parton tree amplitudes becomes available.


title:
A Comparison of two different jet algorithms for the top mass
  reconstruction at the LHC

abstract:
  We compare the abilities of the cluster-type jet algorithm, KtJet, and a
mid-point iterating cone algorithm to reconstruct the top mass at the LHC. We
discuss the information contained in the merging scales of cluster-type
algorithms, and how this can be used in experimental analyses, as well as the
different sources of systematic errors for the two algorithms. We find that the
sources of systematic error are different for the two algorithms, which may
help to better constrain the systematic error on the top mass at the LHC.


title: Heavy Flavour Hadro-Production from Fixed-Target to Collider Energies

abstract:
  We review the hadro-production data presently available on open charm and
beauty absolute production cross-sections, collected by experiments at CERN,
DESY and Fermilab. The published charm production cross-section values are
updated, in particular for the "time evolution" of the branching ratios. These
measurements are compared to LO pQCD calculations, as a function of the
collision energy, using recent parametrisations of the parton distribution
functions. We then estimate, including nuclear effects of the parton densities,
the charm and beauty production cross-sections relevant for measurements at SPS
and RHIC energies, in proton-proton, proton-nucleus and nucleus-nucleus
collisions. The calculations are also compared with measurements of single D
and B kinematical distributions, and DDbar pair correlations. We finish with
two brief comments, concerning the importance of beauty production as a
feed-down source of J/psi production, and open charm measurements performed
using leptonic decays.


title: Physics opportunities with future proton accelerators at CERN

abstract:
  We analyze the physics opportunities that would be made possible by upgrades
of CERN's proton accelerator complex. These include the new physics possible
with luminosity or energy upgrades of the LHC, options for a possible future
neutrino complex at CERN, and opportunities in other physics including rare
kaon decays, other fixed-target experiments, nuclear physics and antiproton
physics, among other possibilities. We stress the importance of inputs from
initial LHC running and planned neutrino experiments, and summarize the
principal detector R&D issues.


title:
Phenomenology of Mirror Fermions in the Littlest Higgs Model with
  T-Parity

abstract:
  Little Higgs models are an interesting alternative to explain electroweak
symmetry breaking without fine-tuning. Supplemented with a discrete symmetry
(T-parity) constraints from electroweak precision data are naturally evaded and
also a viable dark matter candidate is obtained. T-parity implies the existence
of new (mirror) fermions in addition to the heavy gauge bosons of the little
Higgs models. In this paper we consider the effects of the mirror fermions on
the phenomenology of the littlest Higgs model with T-parity at the LHC. We
study the most promising production channels and decay chains for the new
particles. We find that the mirror fermions have a large impact on the
magnitude of signal rates and on the new physics signatures. Realistic
background estimates are given.