title: Testing CPT Symmetry with Supernova Neutrinos

abstract:
  Diagnosing core of supernova requires favor-dependent reconstruction of three
species of neutrino spectra, \nu_e, \bar{\nu}_{e} and \nu_x (a collective
notation for \nu_{\mu}, \bar{\nu}_{\mu}, \nu_{\tau}, and \bar{\nu}_{\tau}). We
point out that, assuming the information available, CPT symmetry can be tested
with supernova neutrinos. We classify all possible level crossing patterns of
neutrinos and antineutrinos into six cases and show that half of them contains
only the CPT violating mass and mixing patterns. We discuss how additional
informations from terrestrial experiments help identifying CPT violation by
narrowing down the possible flux patterns. Although the method may not be good
at precision test, it is particularly suited to uncover gross violation of CPT
such as different mass patterns of neutrinos and antineutrinos. The power of
the method is due to the nature of level crossing in supernova which results in
the sensitivity to neutrino mass hierarchy and to the unique characteristics of
in situ preparation of both \nu and \bar{\nu} beams. Implications of our
discussion to the conventional analyses with CPT conservation are also briefly
mentioned.


title: Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton

abstract:
  We investigate the photoproduction of Theta^+ from the proton and neutron,
gamma N -> Kbar Theta^+. Assuming that spin and parity of Theta^+ are J^P =
3/2^(+,-), it is shown that the production from the proton is strongly
suppressed as compared with that from the neutron. This could provide a
possible explanation for the null results of the recent CLAS experiment in
finding Theta^+ via the reaction gamma p -> Kbar^0 Theta^+.


title:
Synchrotron Radiation in Lorentz-violating Electrodynamics: the
  Myers-Pospelov model

abstract:
  We develop a detailed analysis of synchrotron radiation in the effective
Lorentz invariance violating (LIV) model of Myers-Pospelov, considering
explicitly both the dynamics of the charge producing the radiation and the
dynamics of the electromagnetic field itself. Within the radiation
approximation we compute exact expressions in the LIV parameters for the
electric and magnetic fields, the angular distribution of the power spectrum,
the total emitted power in the m-th harmonic and the polarization. We also
perform expansions of the exact results in terms of the LIV parameters to
identify the dominant effects, and study the main features of the high energy
limit of the spectrum. A very interesting consequence is the appearance of
rather unexpected and large amplifying factors associated with the LIV effects,
which go along with the usual contributions of the expansion parameter. This
opens up the possibility of looking for astrophysical sources where these
amplifying factors are important to further explore the constraints imposed
upon the LIV parameters by synchrotron radiation measurements. We briefly
sketch some phenomenological applications in the case of SNRs and GRBs.


title:
FB asymmetries in the $B \to K^* \ell^+ \ell^-$ decay: A model
  independent approach

abstract:
  Among the various "rare" semi-leptonic decays of $B$-mesons the $B \to K^*
\ell^+ \ell^-$ mode is of special interest. This is because it has the highest
branching ratio among all the semi-leptonic B decays within the SM. This
channel also provides us with a very large number of possible observables, such
as the Forward Backward (FB) asymmetry, lepton polarization asymmetry etc. Of
special interest is the zero which the FB asymmetry has in this decay mode. In
this work we have studied this zero in the most general model independent
framework.


title: Recent results from NA49

abstract:
  New results of the NA49 collaboration on strange particle production are
presented. Rapidity and transverse mass spectra as well as total multiplicities
are discussed. The study of their evolution from AGS over SPS to the highest
RHIC energy reveals a couple of interesting features. These include a sudden
change in the energy dependence of the m_t-spectra and of the yields of strange
hadrons around 30 AGeV. Also, fluctuations of the (K+ + K-)/(pi+ + pi-)$ ratio
and the (p + bar{p})/(pi+ + pi-) ratio, as well as the v_2 of Lambda in Pb+Pb
collsions at 158 AGeV are discussed.


title: Boson's field renormalization prescription

abstract:
  We discuss the problem of the present boson's field renormalization
prescription induced by the imaginary parts of the unstable boson's propagation
amplitudes and how to resolve it.


title:
Decoupling of pion coupling f_{\pi} from quarks at high density in three
  models, and its possible observational consequences

abstract:
  Chiral symmetry is restored at high density, quarks become nearly massless
and pion, the Goldstone of the symmetry breaking decouples from the quarks.
What happens at high density is important for finding the density dependence of
Strange Quark Matter (SQM), - which in turn is relevant for understanding the
structure of compact stars.


title: Dirac Neutrinos and Hybrid Inflation from String Theory

abstract:
  We consider a possible scenario for the generation of Dirac neutrino masses
motivated by Type I string theory. The smallness of the neutrino Yukawa
couplings is explained by an anisotropic compactification with one
compactification radius larger than the others. In addition to this we utilise
small Yukawa couplings to develop strong links between the origin of neutrino
masses and the physics driving inflation. We construct a minimal model which
simultaneously accommodates small Dirac neutrino masses leading to bi-large
lepton mixing as well as an inflationary solution to the strong CP and to the
$\mu$ problem.


title:
Quantum Theory of Neutrino Oscillations for Pedestrians - Simple Answers
  to Confusing Questions

abstract:
  Why are different mass states coherent? What is the correct formula for the
oscillation phase? How can textbook formulas for oscillations in time describe
experiments which never measure time? How can we treat the different velocities
and different transit times of different mass eigenstates and avoid incorrect
factors of two? How can textbook forumulas which describe coherence between
energy states be justified when Stodolsky's theorem states there is no
coherence between different energies? Is covariant relativistic quantum field
theory necessary to describe neutrino oscillations? How important is the
detector, which is at rest in the laboratory and cannot be Lorentz tranformed
to other frames?
  These questions are answered by a simple rigorous calculation which includes
the quantum fluctuations in the position of the detector and in the transit
time between source and detector. The commonly used standard formula for
neutrino oscillation phases is confirmed. An "ideal" detector which measures
precisely the energy and momentum of the neutrino destroys all phases in the
initial wave packet and cannot observe oscillations. A realistic detector
preserves the phase differences between neutrinos having the same energy and
different momenta and confirms the standard formula. Whether phase differences
between neutrinos with different energies are observable or destroyed by the
detector is irrelevant.


title: Relic density of dark matter in the NMSSM

abstract:
  We present a code to compute the relic density of dark matter in the
Next-to-Minimal Supersymmetric Standard Model (NMSSM). Dominant corrections to
the Higgs masses are calculated with NMHDECAY as well as theoretical and
collider constraints. All neutralino annihilation and coannihilation processes
are then computed with an extended version of micrOMEGAs, taking into acount
higher order corrections to Higgs vertices. We explore the parameter space of
the NMSSM and consider in particular the case of a bino LSP, of a mixed
bino-higgsino LSP and of a singlino LSP. As compared to the MSSM, neutralino
annihilation is often more efficient as it can take place via (additional)
Higgs resonances as well as annihilation into light Higgs states. Models with a
large singlino component can be compatible with WMAP constraints.


title: Using dileptons to probe the Color Glass Condensate

abstract:
  The rapidity and transverse momentum dependence of the nuclear modification
ratio for dilepton production at RHIC and LHC is presented, calculated in the
Color Glass Condensate (CGC) framework. The transverse momentum ratio is
compared for two distinct dilepton mass values and a suppression of the Cronin
peak is verified even for large mass. The nuclear modification ratio
suppression in the dilepton rapidity spectra, as obtained experimentally for
hadrons at RHIC, is verified for LHC energies at large transverse momentum,
although not present at RHIC energies. The ratio between LHC and RHIC nuclear
modification ratios is evaluated in the CGC, showing the large saturation
effects at LHC compared with the RHIC results. These results consolidate the
dilepton as a most suitable observable to investigate the QCD high density
approaches.


title: A New Family Symmetry: Discrete Quaternion Group

abstract:
  We examine the structure of the quaternion group $Q_8$ and its possible
application to the physics of flavor. We find that a $Q_8$ family symmetry is
suitable to explain the difference between quark and lepton mixing patterns.
Distinctive phenomenological predictions are derived for the neutrino sector
and the electroweak Higgs sector. We also show how the $Q_8$ symmetry
suppresses the effective operators which mediate proton decay.


title: Lorentz violating electrodynamics

abstract:
  After summarizing the most interesting results in the calculation of
synchrotron radiation in the Myers-Pospelov effective model for Lorentz
invariance violating (LIV) electrodynamics, we present a general unified way of
describing the radiation regime of LIV electrodynamics which include the
following three different models : Gambini-Pullin, Ellis et al. and
Myers-Pospelov. Such unification reduces to the standard approach of radiation
in a dispersive and absortive (in general) medium with a given index of
refraction. The formulation is presented up to second order in the LIV
parameter and it is explicitly applied to the synchrotron radiation case.


title:
Branching ratios of the decays of psi(3770) and Upsilon(10580) into
  light hadrons

abstract:
  Taking into account the new data on the full width of D^{\ast\pm}(2010) and
the mass difference of the charged and neutral beauty mesons B^\pm, B^0,\bar
B^0, the branching ratios of the decays psi(3770), Upsilon(10580) to pi^+pi^-,
K bar K, rho(omega)pi, rho(omega)eta, rho(omega)eta^prime, K^ast bar K+ c.c,
rho^+ rho^-, and K^ast bar K^ast are re-evaluated in the model in which the
Okubo-Zweig-Iizuka rule is violated due to the real intermediate state D\bar D
in case of psi(3770) and B\bar B in case of Upsilon(10580). The inclusive
annihilation of psi(3770) and Upsilon(10580) into light hadrons is discussed.


title: Correlations between two particles in jets

abstract:
  We study the correlation between two soft particles in QCD jets. We extend
the Fong--Webber analysis to the region away from the hump in the single
inclusive energy spectrum and show that the correlation function should flatten
off and then decrease for large values of l=ln(1/x).


title: Massive neutrinos and cosmology

abstract:
  Cosmology can provide information on the absolute scale of neutrino masses,
complementary to the results of tritium beta decay and neutrinoless double beta
decay experiments. We show how the analysis of data from the anisotropies of
the cosmic microwave background radiation and from the distribution of
cosmological large-scale structure, combined with other experimental results,
provides an upper bound on the sum of neutrino masses. We also discuss the
sensitivity of future cosmological data to neutrino masses.


title: Reheating and gravitino production in braneworld inflation

abstract:
  We consider the constraints that can be imposed on a wide class of Inflation
models in modified gravity scenarios in which the Friedmann equation is
modified by the inclusion of $\rho^2$ terms, where $\rho$ is the total energy
density. In particular we obtain the reheating temperature and gravitino
abundance associated with the end of inflation. Whereas models of chaotic
inflation and natural inflation can easily avoid the conventional gravitino
overproduction problem, we show that supersymmetric hybrid inflation models
(driven by both F and D-terms) do not work in the $\rho^2$ dominated era. We
also study inflation driven by exponetial potentials in this modified
background, and show that the gravitino production is suppressed enough to
avoid there being a problem, although other conditions severely constrain these
models.


title: Instanton traces in lattice gluon correlation functions

abstract:
  Strong coupling constant computed in Landau gauge and MOM renormalization
scheme from lattice two and three gluon Green Functions exhibits an unexpected
behavior in the deep IR, showing a maximum value around $1 {\rm GeV}$. We
analise this coupling below this maximum within a semiclassical approach, were
gluon degrees of freedom at very low energies are described in terms of the
classical solutions of the lagrangian, namely instantons. We provide some new
results concerning the relationship between instantons and the low energy
dynamics of QCD, by analising gluon two- and three-point Green functions
separately and with the help of a cooling procedure to eliminate short range
correlations.


title:
CP asymmetries and branching ratios of B --> K \pi in supersymmetric
  models

abstract:
  We analyze the supersymmetric contributions to the direct and mixing CP
asymmetries and also to the branching ratios of the B --> K \pi decays in a
model independent way. We consider both gluino and chargino exchanges and
emphasize that a large gluino contribution is essential for saturating the
direct and mixing CP asymmetries. We also find that combined contributions from
the penguin diagrams with chargino and gluino in the loop could lead to a
possible solution for the branching ratios puzzle and account for the results
of R_c and R_n within b --> s \gamma constraints. When all relevant constraints
are satisfied, our result indicates that supersymmetry favors lower values of
R_c. Finally we study the correlations between the mixing CP asymmetry S_{K^0
\pi^0} and mixing CP asymmetries of the processes B --> \phi K and B --> \eta'
K. We show that it is quite possible for gluino exchanges to accommodate the
results of that observables


title: Quark-Antiquark Condensates in the Hadronic Phase

abstract:
  We use a hadron resonance gas model to calculate the quark-antiquark
condensates for light (up and down) and strange quark flavors at finite
temperatures and chemical potentials. At zero chemical potentials, we find that
at the temperature where the light quark-antiquark condensates entirely vanish
the strange quark-antiquark condensate still keeps a relatively large fraction
of its value in the vacuum. This is in agreement with results obtained in
lattice simulations and in chiral perturbation theory at finite temperature and
zero chemical potentials. Furthermore, we find that this effect slowly
disappears at larger baryon chemical potential. These results might have
significant consequences for our understanding of QCD at finite temperatures
and chemical potentials. Concretely, our results imply that there might be a
domain of temperatures where chiral symmetry is restored for light quarks, but
still broken for strange quark that persists at small chemical potentials. This
might have practical consequences for heavy ion collision experiments.


title: Nucleon sea in the effective chiral quark model

abstract:
  The asymmetries of both light-flavor antiquark $\bar{d}(x)-\bar{u}(x)$ and
strange-antistrange $s(x)-\bar{s}(x)$ distributions of the nucleon sea are
considered with more details in the effective chiral quark model. We find that
the asymmetric distribution of light-flavor antiquarks $\bar{d}(x)-\bar{u}(x)$
matches the experiment data well and that the asymmetry of strange and
antistrange distributions can bring about 60-100% correction to the NuTeV
anomaly of $\sin^{2}\theta_{w}$, which are three standard deviations from the
world average value measured in other electroweak processes. The results on the
correction to the NuTeV anomaly are insensitive to the inputs of the
constituent quark distributions and the cut-off parameters. The ratios of
$\bar{d}(x)/\bar{u}(x)$ and $s(x)/\bar{s}(x)$ are also discussed, and it is
found that the ratio $s(x)/\bar{s}(x)$ is compatible with the available
experiments with an additional symmetric sea contribution being considered
effectively.


title: Avoiding the gauge heirarchy problem with see-sawed neutrino masses

abstract:
  We show that the see-saw neutrino mass mechanism can coexist naturally with
an extended gauge symmetry (i.e. without any gauge heirarchy problem) provided
that the gauge symmetry contains gauged lepton number differences. The simplest
such `natural' see-saw models are constructed and their implications for
neutrino anomalies discussed.


title: Factorization in B -> K pi e+e- decays

abstract:
  We derive factorization relations for the transverse helicity amplitudes in
the rare decays B-> K\pi l+l- at leading order in Lambda/m_b, in the
kinematical region with an energetic kaon and a soft pion. We identify and
compute a new contribution of leading order in Lambda/m_b to the B->K\pi l+l-
amplitude, which is not present in the one-body decay B-> K*l+l-. As an
application we study the forward-backward asymmetry (FBA) of the lepton
momentum angular distribution in B-> K\pi l+l- decays away from the K*
resonance. The FBA in these decays has a zero at q0^2 = q0^2(M_{Kpi}), which
can be used, in principle, for determining the Wilson coefficients C_{7,9} and
testing the Standard Model. We point out that the slope of the q0^2(M_{Kpi}^2)
curve contains the same information about the Wilson coefficients as the
location of the zero, but is less sensitive to unknown nonperturbative
dynamics. We estimate the location of the zero at leading order in
factorization, and using a resonant model for the B -> K\pi l+l-
nonfactorizable amplitude.


title: Yukawa Scalar Self-Mass on a Conformally Flat Background

abstract:
  We compute the one loop self-mass-squared of a massless, minimally coupled
scalar which is Yukawa-coupled to a massless Dirac fermion in a general
conformally flat background. Dimensional regularization is employed and a fully
renormalized result is obtained. For the special case of a locally de Sitter
background our result is manifestly de Sitter invariant. By solving the
effective field equations we show that the scalar mode functions acquire no
significant one loop corrections. In particular, the phenomenon of
super-adiabatic amplification is not affected. One consequence is that the
scalar-catalyzed production of fermions during inflation should not be reduced
by changes in the scalar sector before it has time to go to completion.


title:
Longitudinally Polarized Photoproduction of Inclusive Hadrons at
  Fixed-Target Experiments

abstract:
  We present a detailed phenomenological study of spin-dependent
single-inclusive high-p_T hadron photoproduction with particular emphasis on
the kinematics relevant for the Compass and Hermes fixed-target experiments. We
carefully examine the theoretical uncertainties associated with the only
moderate transverse momenta accessible in such measurements and analyze the
sensitivity of the relevant spin asymmetries to the gluon polarization in the
nucleon as well as to the completely unknown parton content of circularly
polarized photons.


title: Revisiting the OZI-forbidden Radiative Decays of Orthoquarkonia

abstract:
  It is interesting to investigate the OZI-forbidden radiative orthoquarkonium
decays $J/\psi\to \gamma\pi^0, \gamma\eta$ and $\gamma\eta'$ in perturbative
QCD. In this work without the approximations adopted in literature we carry out
a full one-loop calculation which involves integrations of 4-point and 5-point
loop functions. Our numerical results are in agreement with the present data.
We also briefly discuss the decays of $J/\psi\to \gamma+\rho^0$, as well as
$\Upsilon\to \pi^0\gamma, \eta\gamma, \eta'\gamma$.


title: New Diffractive Results from the Tevatron

abstract:
  Experimental results in diffractive processes are summarized and a few
notable characteristics described in terms of Quantum Chromodynamics. Exclusive
dijet production is used to establish a benchmark for future experiments in the
quest for diffractive Higgs production at the Large Hadron Collider. Using new
data from the Tevatron and dedicated diffractive triggers, no excess over a
smooth falling distribution for exclusive dijet events could be found.
Stringent upper limits on the exclusive dijet production cross section are
presented. The quark/gluon composition of dijet final states is used to provide
additional hints on exclusive dijet production.


title:
Enhancement of Line Gamma Ray Signature from Bino-like Dark Matter
  Annihilation due to CP Violation

abstract:
  We study the line gamma ray signature from the Galactic Center originating
from Bino-like dark matter pair annihilation, when CP is not conserved. We
consider the case that the Bino is nearly degenerate with a sfermion in mass.
Although an indirect detection of Bino-like dark matter is difficult in
general, the signal of Bino-like dark matter pair annihialtion in this case is
enormously enhanced due to the threshold singularity.


title: Productions of \sigma meson in J/\psi and \psi(2s) decays

abstract:
  Productions of scalar meson in the decays of J/\psi-->\omega+\sigma,
J/\psi-->\gamma+\sigma and \psi(2s)-->\omega+\sigma, \gamma+\sigma and ee^+
annihilations in the regions of J/\psi and \psi(2s) are studied.


title: Sneutrino Leptogenesis at the Electroweak Scale

abstract:
  We propose an alternative mechanism for leptogenesis at the electroweak
scale, through the decays of a left-handed sneutrino. This scenario may be
realized in supersymmetric models with non-zero Majorana masses for the
neutrino superfield that lead to mixing and mass splitting between the
left-handed sneutrino and the corresponding antisneutrino. Soft supersymmetry
breaking provides new sources of CP violation in sneutrino-antisneutrino mixing
that can generate a lepton asymmetry in decays of the left-handed sneutrino. We
show how the three Sakharov conditions for generating the observed baryon
asymmetry of the Universe can be fulfilled in this restrictive framework.


title: Long-Distance Effects in Rare K Decays

abstract:
  Rare K decays provide for very clean tests of the Standard Model, and are
especially suited to search for New Physics signal. In this talk, recent
progresses in the estimation of long-distance effects induced by light quarks
in KL to pi0 mu+ mu- and K+ to pi+ nu nu are reported.


title: A Possible Modified "bottom-up" Thermalization in Heavy Ion Collisions

abstract:
  We present a possible scaling solution to pre-equilibrium evolution which
interpolates between the instability present in the dense gluon system produced
immediately after a heavy ion collision and the final equilibration which
occurs later. Our solution depends on a single parameter $\delta$. Depending on
the value of $\delta$, our proposed solution matches onto the bottom-up picture
either at an intermediate stage or toward the end of the evolution given by
bottom-up. We discuss in detail the reasons why we believe our solution is
self-consistent, and we also point out why it is difficult to actually prove
consistency.


title:
Do solar neutrinos constrain the electromagnetic properties of the
  neutrino?

abstract:
  It is of great interest whether the recent KamLAND bound on the flux of
electron antineutrinos from the Sun constrains the electromagnetic properties
of the neutrino. We examine the efficiency of the electron antineutrino
production in the solar magnetic fields, assuming the neutrinos are Majorana
particles with a relatively large transition moment. We consider fields both in
the radiative and convective zones of the Sun, with physically plausible
strengths, and take into account the recently established values of the
oscillation parameters. Our analysis shows that the production rate in question
is presently unobservable. In the radiative zone, it is suppressed by the large
measured value of the flavor mixing angle which eliminates the resonant level
crossing. A corresponding general resonance condition, valid for large as well
as small values of the mixing angle, is derived. Likewise, in the convective
zone, the strength of the small-scale magnetic field is likely insufficient.
Thus, no useful bound on the neutrino transition moment can be derived from the
published KamLAND bound. KamLAND may be, however, on the edge of probing an
``optimistic'' scenario, making further improvements of its sensitivity
desirable.


title: Testing the chirality of b to u current with B^0 \to \rho^ - \ell^+ \nu

abstract:
  We study the effects of a modest V+A admixture strength in $b\tou$ current in
the decay $B \to\rho l \nu$. We have shown that the decay rate, lepton
forward-backward distribution asymmetry $A_{FB}$ and polarization ratio are
sensitive to the admixture. Future experimental studies of the decay at BaBar
and BELLE could clarify the chirality of $b\to u$ current and might reveal
hints for New Physics with right-handed quark currents.


title: 511 keV Gamma Ray from Moduli Decay in the Galactic Bulge

abstract:
  We show that the $e^++e^-$ decay of a light scalar boson of mass 1-10 MeV may
account for the fluxes of 511 keV gamma ray observed by SPI/INTEGRAL. We argue
that candidates of such a light scalar boson is one of the string moduli or a
scalar partner of the axion in a supersymmetric theory.


title: Retardation effects in the rotating string model

abstract:
  A new method to study the retardation effects in mesons is presented.
Inspired from the covariant oscillator quark model, it is applied to the
rotating string model in which a non zero value is allowed for the relative
time between the quark and the antiquark. This approach leads to a retardation
term which behaves as a perturbation of the meson mass operator. It is shown
that this term preserves the Regge trajectories for light mesons, and that a
satisfactory agreement with the experimental data can be obtained if the quark
self-energy contribution is added. The consequences of the retardation on the
Coulomb interaction and the wave function are also analyzed.


title: Evolution Equations in the electroweak sector of the Standard Model

abstract:
  Energy-growing electroweak corrections in the Standard Model are potentially
relevant for LHC physics, for Next generation of Linear Colliders (NLCs) and
for ultrahigh energy cosmic rays. I present here the results of recent work in
which electroweak evolution equations (the analogous of DGLAP equations in QCD)
have been derived. The main features of these effects, mainly related to the
fact that the electroweak sector is spontaneously broken, are pointed out.


title:
Method of characteristics and solution of DGLAP evolution equation in
  leading order at small-x

abstract:
  In this paper the singlet and non-singlet hadron structure functions have
been obtained by solving Dokshitzer-Gribov-Lipatov-Alterelli-Parisi (DGLAP)
evolution equations in leading order (LO) at the small-x limit. Here we have
used a Taylor Series expansion and then the method of characteristics to solve
the evolution equation. We have also calculated t and x-evolutions of deuteron
structure function and the results are compared with the New Muon Collaboration
(NMC) data.


title: KL -> pi0 nu nu-bar as a Probe of New Physics

abstract:
  We summarize the theoretical virtues of the rare K -> pi nu nu-bar decays and
emphasize the unique role of KL -> pi0 nu nu-bar in probing the nature of
physics beyond the Standard Model, in particular concerning possible new
sources of CP violation and flavor-symmetry breaking. A brief summary of the
prospects for the measurement of the KL -> pi0 nu nu-bar rate is also given.


title: Supersymmetric structure of electroweak Sudakov corrections

abstract:
  Electroweak radiative corrections can be evaluated in the Sudakov
approximation, a systematic high energy expansion known to be relevant for the
analysis of future collider experiments in the TeV energy range. In the Minimal
Supersymmetric Standard Model and at next-to-leading order, Sudakov electroweak
corrections satisfy remarkable relations at the one loop level. Explicit
computations in component fields are available for various different $2\to 2$
processes relevant for Linear Collider or LHC physics. The Sudakov corrections
turn out to be equal or closely related in several classes of processes
differing by the replacement of certain final or initial states with their
superpartners. This fact suggests that supersymmetry is partially restored at
high-energy. We analyze the supersymmetric structure of such relations by
computing the Sudakov corrections in the framework of superfield perturbation
theory. As a simple application, we derive in full details an extended complete
set of supersymmetric relations among different processes related by
supersymmetry to the fundamental fermion pair production process $e^+e^-\to
f\bar f$.


title:
"Bimaximal + Democratic" type neutrino mass matrix in view of
  quark-lepton complementarity

abstract:
  We demonstrate that `Bimaximal + Democratic' type neutrino mass matrix can
accommodate the deviation of $\theta_\odot$ from its maximal value which
referred in the literature as `quark-lepton complementarity' along with the
other present day neutrino experimental results, namely, atmospheric, CHOOZ,
neutrinoless double beta decay ($\beta\beta_{0\nu}$) and result obtained from
WMAP experiment. We define a function $\chi_p$ in terms of solar and
atmospheric neutrino mass squared differences and solar neutrino mixing angle
(obtained from different experiments and our proposed texture). The masses and
mixing angles are expressed in terms of three parameters in our proposed
texture. The allowed region of the texture parameters is obtained through
minimization of the above function. The proposed texture crucially depends on
the value of the experimental results of $\beta\beta_{0\nu}$ experiment among
all other above mentioned experiments. If, in future, $\beta\beta_{0\nu}$
experiments, namely, MOON, EXO, GENIUS shift the lower bound on $<m_{ee} >$ at
the higher side by one order, the present texture will be ruled out.


title: Calculation of Massless Feynman Integrals using Harmonic Sums

abstract:
  A method for the evaluation of the epsilon expansion of multi-loop massless
Feynman integrals is introduced. This method is based on the Gegenbauer
polynomial technique and the expansion of the Gamma function in terms of
harmonic sums. Algorithms for the evaluation of nested and harmonic sums are
used to reduce the expressions to get analytical or numerical results for the
expansion coefficients. Methods to increase the precision of numerical results
are discussed.


title: Flavour Physics and CP Violation

abstract:
  After listing basic properties of the Standard Model (SM) that play the
crucial role in the field of flavour and CP violation, we discuss the following
topics: 1) CKM matrix and the unitarity triangle. 2) Theoretical framework in a
non-technical manner, classifying various extentions of the SM. 3)
Particle-Antiparticle mixing and various types of CP violation. 4) Standard
analysis of the unitarity triangle. 5) Strategies for the determination of the
angles alpha, beta and gamma in non-leptonic B decays. 6) The rare decays K^+
-> pi^+ nu \bar nu and K_L -> pi^0 nu \bar nu 7) Models with minimal flavour
violation (MFV). 8) Models with new complex phases, addressing in particular
possible signals of new physics in the B -> pi K data and their implications
for rare K and B decays. A personal shopping list for the rest of this decade
closes these lectures.


title: Impact of CP Violation on |V_e3|

abstract:
  We study the impact of the positivity of the measure of CP violation in
neutrino oscillations on the values of |V_e3| and |V_mu1|. We use the available
information on the solar and atmospheric mixing parameters |V_e2| and |V_mu3|
provided by neutrino oscillation data. We conclude that large values of |V_e3|
are preferred at 95% confidence level. This, in turn, favours large values for
J_lepton compared to CP violation in the quark sector.


title:
Adventures in Theoretical Physics: Selected Papers of Stephen L. Adler
  -- Commentaries

abstract:
  These are the commentaries for a volume of reprints of my selected papers
with commentaries that I am preparing for publication by World Scientific.
  Contents: Preface; (1)Early Years, and Condensed Matter Physics; (2) High
Energy Neutrino Reactions, PCAC Relations, and Sum Rules; (3) Anomalies: Chiral
Anomalies and Their Nonrenormalization, Perturbative Corrections to Scaling,
and Trace Anomalies to All Orders; (4) Quantum Electrodynamics; (5) Particle
Phenomenology and Neutral Currents; (6) Gravitation; (7) Non-Abelian Monopoles,
Confinement Models, and Chiral Symmetry Breaking; (8) Overrelaxation for
Monte-Carlo and Other Algorithms; (9) Quaternionic Quantum Mechanics, Trace
Dynamics, and Emergent Quantum Theory; (10) Where Next?

categories: hep-ph cond-mat.other gr-qc hep-lat hep-th math-ph math.MP physics.hist-ph quant-ph


title: Lepton charge and neutrino mixing in pion decay processes

abstract:
  We consider neutrino mixing and oscillations in quantum field theory and
compute the neutrino lepton charge in decay processes where neutrinos are
generated. We also discuss the proper definition of flavor charge and states
and clarify the issues of the possibility of different mass parameters in field
mixing.


title:
Spin Polarization of Hyperons in the Hadron-Hadron Inclusive Collisions
  - Mechanisms and Dynamics -

abstract:
  We discuss interplay of the scalar and vector diquarks which decide the
characteristics of the spin polarization as functions of $p_T$ and $x_F$ in the
wide kinematical range. We demonstrate a significant effect of quark masses on
the pair-creation probabilities from vacuum in $pp \to \Sigma^- X$ and $\gamma
p \to \Lambda X$ collisions, and also a remarkable correction induced by the
diquark form factor in $ \Sigma^- p \to \Lambda X $ collision.


title: Quantum electrodynamics for vector mesons

abstract:
  Quantum electrodynamics for $\rho$ mesons is considered. It is shown that, at
tree level, the value of the gyromagnetic ratio of the $\rho^+$ is fixed to 2
in a self-consistent effective quantum field theory. Further, the mixing
parameter of the photon and the neutral vector meson is equal to the ratio of
electromagnetic and strong couplings, leading to the mass difference
$M_{\rho^0}-M_{\rho^\pm}\sim 1 {\rm MeV}$ at tree order.


title: QCD-supression by Black Hole Production at the LHC

abstract:
  Possible consequences of the production of small black holes at the LHC for
different scenarios with large extra dimensions are investigated. The effects
from black hole production on some standard jet observables are examined,
concentrating on the reduction of the QCD cross section. It is found that black
hole production of partons interacting on a short enough distance indeed seem
to generate a drastic drop in the QCD cross section. However from an
experimental point of view this will in most cases be camouflaged by energetic
radiation from the black holes.


title: Isotropization far from equilibrium

abstract:
  Isotropization occurs on time scales much shorter than the thermal
equilibration time. This is a crucial ingredient for the understanding of
collision experiments of heavy nuclei or other nonequilibrium phenomena in
complex many body systems. We discuss in detail the limitations of estimates
based on standard ``linear'' or relaxation-time approximations, where
isotropization and thermal equilibration rates agree. For a weak-coupling
$\phi^4$-model the relaxation-time approximation underestimates the thermal
equilibration time by orders of magnitude, in contrast to the isotropization
time. The characteristic nonequilibrium isotropization rate can be enhanced as
compared to the close-to-equilibrium value. Our results are obtained from the
two-particle irreducible effective action, which includes off-shell and memory
effects and does not involve a gradient expansion. This allows us to determine
the range of validity of a description to lowest-order in gradients, which is
typically employed in kinetic equations.

categories: hep-ph astro-ph cond-mat.stat-mech hep-th nucl-th


title: Fine structure of beta decay endpoint spectrum

abstract:
  We note that the fine structure at the endpoint region of the beta decay
spectrum is now essentially known using neutrino oscillation data, if the mass
of one neutrino is specified. This may help to identify the effects of nonzero
neutrino masses in future experiments. An exact treatment of phase space
kinematics is used. This work is independent of theoretical models. Additional
restrictions due to the assumption of a so-called "complementary ansatz" for
the neutrino mass matrix are also discussed.


title:
Deducing the Lowest Rest Mass Quarks and Baryons of all Kinds with an
  Expanded Form of Planck-Bohr's Quantization Method

abstract:
  Using an expanded form of Planck-Bohr's quantization method and
phenomenological formulae,} {\small we deduce the rest masses and intrinsic
quantum numbers (I, S, C, b and Q) of all kinds of the lowest energy quarks and
baryons, from only one elementary quark family}$\epsilon $ {\small with S = C =
b = 0. The deduced quantum numbers match those found in experiments. The
deduced rest masses are consistent with experimental results. This paper
predicts some quarks $\text{u}_{C}\text{(6073),}$}d$_{S}${\small (9613)}
{\small $\text{and d}_{b}\text{(9333)}$and baryons $\Lambda_{c}^{+}$% (6696),
$\Lambda_{b}$(9959)and $\Lambda $(10239).


title: Critical QCD in Nuclear Collisions

abstract:
  A detailed study of correlated scalars, produced in collisions of nuclei and
associated with the $\sigma$-field fluctuations, $(\delta \sigma)^2= < \sigma^2
>$, at the QCD critical point (critical fluctuations), is performed on the
basis of a critical event generator (Critical Monte-Carlo) developed in our
previous work. The aim of this analysis is to reveal suitable observables of
critical QCD in the multiparticle environment of simulated events and select
appropriate signatures of the critical point, associated with new and strong
effects in nuclear collisions.


title:
Neutrino collective excitations in the Standard Model at high
  temperature

abstract:
  Neutrino collective excitations are studied in the Standard Model at high
temperatures below the symmetry breaking scale. Two parameters determine the
properties of the collective excitations: a mass scale $m_\nu=gT/4$ which
determines the \emph{chirally symmetric} gaps in the spectrum and
$\Delta=M^2_W(T)/2m_\nu T$. The spectrum consists of left handed negative
helicity quasiparticles, left handed positive helicity quasiholes and their
respective antiparticles. For $\Delta < \Delta_c = 1.275...$ there are two
gapped quasiparticle branches and one gapless and two gapped quasihole
branches, all but the higher gapped quasiparticle branches terminate at end
points. For $\Delta_c < \Delta < \pi/2$ the quasiparticle spectrum features a
pitchfork bifurcation and for $\Delta >\pi/2$ the collective modes are gapless
quasiparticles with dispersion relation below the light cone for $k\ll m_\nu$
approaching the free field limit for $k\gg m_\nu$ with a rapid crossover
between the soft non-perturbative to the hard perturbative regimes for $k\sim
m_\nu$.The \emph{decay} of the vector bosons leads to a \emph{width} of the
collective excitations of order $g^2$ which is explicitly obtained in the
limits $k =0$ and $k\gg m_\nu \Delta$. At high temperature this damping rate is
shown to be competitive with or larger than the collisional damping rate of
order $G^2_F$ for a wide range of neutrino energy.


title:
Higher Derivative Operators from Transmission of Supersymmetry Breaking
  on S_1/Z_2

abstract:
  We discuss the role that higher derivative operators play in field theory
orbifold compactifications on S_1/Z_2 with local and non-local (Scherk-Schwarz)
breaking of supersymmetry. Integrating out the bulk fields generates
brane-localised higher derivative counterterms to the mass of the brane (or
zero-mode of the bulk) scalar field, identified with the Higgs field in many
realistic models. Both Yukawa and gauge interactions are considered and the
one-loop results found can be used to study the ``running'' of the scalar field
mass with respect to the momentum scale in 5D orbifolds. In particular this
allows the study of the behaviour of the mass under UV scaling of the momentum.
The relation between supersymmetry breaking and the presence of higher
derivative counterterms to the mass of the scalar field is investigated. This
shows that, regardless of the breaking mechanism, (initial) supersymmetry
cannot, in general, prevent the emergence of such operators. Some implications
for phenomenology of the higher derivative operators are also presented.


title:
Time Reversal Induces Negative Mass and Charge Conjugation: On the
  Physical Interpretation of the Irreducible Unitary Representations of
  Negative Mass and Energy of the Full Poincare Group

abstract:
  This article proves that according to the principles of quantum mechanics the
existence of elementary particles of negative mass is physically plausible.
Heisenberg's uncertainty principle plays an important role in this
demonstration. By reversing time, charge and mass are conjugated and the
symmetry group is that of the Poincare with space-time reflections (full
Poincare group). Particles that tunnel from the future time-like cone to the
past time-like cone move backward in time with negative mass (and energy).
These particles are interpreted as antiparticles of positive mass (and energy)
that move forward in time. There is not a physical law that precludes two
observers from seeing different mass signs of a particle, since the mass is not
a Poincare invariant, but its square, p^2 = -m^2.


title:
Transverse Deformation of Parton Distributions and Transversity
  Decomposition of Angular Momentum

abstract:
  Impact parameter dependent parton distributions are transversely distorted
when one considers transversely polarized nucleons and/or quarks. This provides
a physical mechanism for the T-odd Sivers effect in semi-inclusive
deep-inelastic scattering. The transverse distortion can also be related to
Ji's sum rule for the angular momentum carried by the quarks. The distortion of
chirally odd impact parameter dependent parton distributions is related to
chirally odd GPDs. This result is used to provide a decomposition of the quark
angular momentum w.r.t. quarks of definite transversity. Chirally odd GPDs can
thus be used to determine the correlation between quark spin and quark angular
momentum in unpolarized nucleons. Based on the transverse distortion, we also
suggest a qualitative connection between chirally odd GPDs and the Boer-Mulders
effect.


title: B, D, K decays and CKM matrix from lattice QCD

abstract:
  We use lattice QCD to fully determine the CKM matrix. |V_{cd}|, |V_{cs}|,
|V_{ub}|, |V_{cb}| and |V_{us}| are, respectively, directly determined with
recent lattice results for form factors of semileptonic D->pi l nu, D->K l nu,
B->pi l nu, B->D l nu and K->pi l nu decays obtained by the Fermilab Lattice,
MILC, and HPQCD Collaborations. In addition, |V_{ud}|, |V_{tb}|, |V_{ts}| and
|V_{td}| are determined by using unitarity of the CKM matrix and the
experimental result for sin(2beta).


title:
Lepton flavor violation in Higgs boson decays under the rare tau decay
  results

abstract:
  We study lepton flavor violation (LFV) associated with tau leptons in the
framework of the two Higgs doublet model, in which LFV couplings are introduced
as a deviation from Model II Yukawa interaction. Parameters of the model are
constrained from experimental results and also from requirements of theoretical
consistencies such as vacuum stability and perturbative unitarity. Current data
for rare tau decays provide substantial upper limits on the LFV Yukawa
couplings in the large $\tan\beta$ region ($\tan\beta \gtrsim 30 $), which are
comparable with predictions in fundamental theories. Here $\tan\beta$ is the
ratio of vacuum expectation values of the two Higgs doublets. We show that a
search for the LFV decays $\phi^{0} \to \tau^\pm \mu^\mp$ $(\tau^\pm e^\mp)$ of
neutral Higgs bosons ($\phi^{0} =h,H$ and $A$) at future collider experiments
can be useful to further constrain the LFV couplings especially in the
relatively small $\tan\beta$ region ($\tan\beta \lesssim 30 $), where rare tau
decay data cannot give any strong limit.


title: Quantum ChromoDynamics

abstract:
  These lectures on QCD stress the theoretical elements that underlie a wide
range of phenomenological studies, particularly gauge invariance,
renormalization, factorization and infrared safety. The three parts cover the
basics of QCD, QCD at tree level and higher order corrections.


title: Heavy Quark Interactions in Finite Temperature QCD

abstract:
  We study the free energy of a heavy quark-antiquark pair in a thermal medium.
We constuct a simple ansatz for the free energy for two quark flavors motivated
by the Debye-H\"uckel theory of screening.


title: SU(3) Relations and the CP Asymmetry in $B \to K_S K_S K_S$

abstract:
  The CP asymmetry in the $B \to K_S K_S K_S$ decay is being measured by the
two B factories. A large deviation of the CP asymmetry $S_{K_S K_S K_S}$ from
$-S_{\psi K_S}$ and/or of $C_{K_S K_S K_S}$ from zero would imply new physics
in $b \to s$ transitions. We try to put upper bounds on the Standard Model size
of these deviations, using SU(3) flavor relations and experimental data on the
branching ratios of various decay modes that proceed via $b \to d$ transitions.
We point out several subtleties that distinguish the case of three body final
states from two body ones. We present several simple relations that can become
useful once all relevant modes are measured accurately enough.


title: Radiative transitions of $D^*_{sJ}(2317)$ and $D_{sJ}(2460)$

abstract:
  We study radiative decays of $D^*_{sJ}(2317)$ and $D_{sJ}(2460)$ using
light-cone QCD sum rules. In particular, we consider the decay modes
$D^*_{sJ}(2317)\to D_s^* \gamma $ and $D_{sJ}(2460)\to D_s^{(*)} \gamma,
D^*_{sJ}(2317) \gamma$ and evaluate the hadronic parameters in the transition
amplitudes analyzing correlation functions of scalar, pseudoscalar, vector and
axial-vector quark currents. In the case of $D^*_{sJ}(2317)\to D_s^* \gamma $
we also consider determinations based on two different correlation functions in
HQET. The decay widths turn out to be different than previous estimates
obtained by other methods; the results favour the interpretation of
$D^*_{sJ}(2317)$ and $D_{sJ}(2460)$ as ordinary $\bar c s$ mesons.


title: Singlet VA \tilde V correlator within the instanton vacuum model

abstract:
  The correlator of singlet axial-vector and vector currents in the external
electromagnetic field is studied within the instanton liquid model of QCD
vacuum. In the chiral limit we calculate the longitudinal w_L^0 and transversal
w_T^0 with respect to axial-vector index invariant amplitudes at arbitrary
momentum transfer q. It is demonstrated how the anomalous longitudinal part of
the correlator is renormalized at low momenta due to the presence of the U_A(1)
anomaly.


title: Multiplicity fluctuations in the string clustering approach

abstract:
  We present our results on multiplicity fluctuations in the framework of the
string clustering approach. We compare our results --with and without
clustering formation-- with CERN SPS NA49 data. We find a non-monotonic
behaviour of these fluctuations as a function of the collision centrality,
which has the same origin as the observed fluctuations of transverse momentum:
the correlations between the produced particles due to the cluster formation.


title: Covariant calculation of mesonic baryon decays

abstract:
  We present covariant predictions for pi and eta decay modes of N and Delta
resonances from relativistic constituent-quark models based on
one-gluon-exchange and Goldstone-boson-exchange dynamics. The results are
calculated within the point-form approach to Poincare-invariant relativistic
quantum mechanics applying a spectator-model decay operator. The direct
predictions of the constituent-quark models for covariant pi and eta decay
widths show a behaviour completely different from previous ones calculated in
nonrelativistic or so-called semirelativistic approaches. It is found that the
present theoretical results agree with experiment only in a few cases but
otherwise always remain smaller than the experimental data (as compiled by the
Particle Data Group). Possible reasons for this behaviour are discussed with
regard to the quality of both the quark-model wave functions and the mesonic
decay operator.


title: Thermal Time Scales in a Color Glass Condensate

abstract:
  In a model of relativistic heavy ion collisions wherein the unconfined
quark-gluon plasma is condensed into glass, we derive the Vogel-Fulcher-Tammann
cooling law. This law is well known to hold true in condensed matter glasses.
The high energy plasma is initially created in a very hot negative temperature
state and cools down to the Hagedorn glass temperature at an ever decreasing
rate. The cooling rate is largely determined by the QCD string tension derived
from hadronic Regge trajectories. The ultimately slow relaxation time is a
defining characteristic of a color glass condensate.


title: Neutrino Masses and Mixings in a Minimal SO(10) Model

abstract:
  We consider a minimal formulation of SO(10) Grand Unified Theory wherein all
the fermion masses arise from Yukawa couplings involving one 126 and one 10 of
Higgs multiplets. It has recently been recognized that such theories can
explain, via the type-II seesaw mechanism, the large \nu_\mu - \nu_\tau mixing
as a consequence of b-tau unification at the GUT scale. In this picture,
however, the CKM phase \delta lies preferentially in the second quadrant, in
contradiction with experimental measurements. We revisit this minimal model and
show that the conventional type-I seesaw mechanism generates phenomenologically
viable neutrino masses and mixings, while being consistent with CKM CP
violation. We also present improved fits in the type-II seesaw scenario and
suggest fully consistent fits in a mixed scenario.


title:
Estimate of the Theta+ width in the Relativistic Mean Field
  Approximation

abstract:
  In the Relativistic Mean Field Approximation three quarks in baryons from the
lowest octet and the decuplet are bound by the self-consistent chiral field,
and there are additional quark-antiquark pairs whose wave function also follows
from the mean field. We present a generating functional for the 3-quark,
5-quark, 7-quark ... wave functions inside the octet, decuplet and antidecuplet
baryons treated in a universal and compact way. The 3-quark components have the
SU(6)-symmetric wave functions but with specific relativistic corrections which
are generally not small. In particular, the normalization of the 5-quark
component in the nucleon is about 50% of the 3-quark component. We give
explicitly the 5-quark wave functions of the nucleon and of the exotic Theta+.
We develop a formalism how to compute observables related to the 3- and 5-quark
Fock components of baryons, and apply it to estimate the Theta+ width which
turns out to be very small, 2-4 MeV, although with a large uncertainty.


title: Physics Potential of the Fermilab NuMI beamline

abstract:
  We explore the physics potential of the NuMI beamline with a detector located
10 km off-axis at a distant site (810 km). We study the sensitivity to $\sin^2
2 \theta_{13}$ and to the CP-violating parameter $\sin \delta$ as well as the
determination of the neutrino mass hierarchy by exploiting the $\nu_\mu \to
\nu_e$ and $\bar{\nu}_\mu \to \bar{\nu}_e$ appearance channels. The results are
illustrated for three different experimental setups to quantify the benefits of
increased detector sizes, proton luminosities and $\nu_e$ detection
efficiencies.


title: A Generalization of the Concept of Parity Conservation

abstract:
  This article rebuilds the parity conservation under the light of
Heinsenberg's uncertainty principle and the equivalence among the four
space-time coordinates. The lack of equilibrium between matter and antimatter
is elucidated; neutrino mass is a logical corollary of this asymmetry. Based on
this new concept of parity conservation the existence of black holes is
questioned. It is also found that entropy could decrease in a close quantum
system. CPT would be an exact symmetry if the full Poincare group were the
symmetry group of nature. Therefore, CPT must be violated if nature obeys a
larger symmetry group than that of the full Poincare group. Examples of CPT
violation could be found in a quantum theory of gravity, and the supertheories.


title:
Photoproduction of Pentaquark $\Theta^+$ and Chiral Symmetry Restoration
  in Hot and Dense Medium

abstract:
  The photoproduction rate of pentaquark $\Theta^+$ is calculated in a hot and
dense medium. At high temperature and density, due to the restoration of chiral
symmetry, photoproduction energy threshold is increased. Above the thresold the
production cross section is strongly enhanced.


title: Is $D^{+}_{sJ}(2632)$ the first radial excitation of $D_{s}^{*}(2112)$?

abstract:
  We present a quantitative analysis of the $D^{+}_{sJ}(2632)$ observed by
SELEX mainly focusing on the assumption that $D^{+}_{sJ}(2632)$ is the first
radial excitation of the $1^{-}$ ground state $D^{*}_{s}(2112)$. By solving the
instantaneous Bethe-Salpeter equation, we obtain the mass $2658\pm 15$ MeV for
the first excited state, which is about 26 MeV heavier than the experimental
value $2632\pm 1.7$ MeV. By means of PCAC and low-energy theorem we calculate
the transition matrix elements and obtain the decay widths:
$\Gamma(D^{+}_{sJ}\to D^{+}_s\eta)=4.07\pm 0.34$ MeV, $\Gamma(D^{+}_{sJ}\to
D^{0}K^{+}) \simeq \Gamma(\Gamma(D^{+}_{sJ}\to D^{+}K^{0})=8.9\pm 1.2$ MeV, and
the ratio $\Gamma(D^{+}_{sJ}\to D^{0}K^{+})/\Gamma(D^{+}_{sJ}\to
D^{+}_{s}\eta)=2.2\pm 0.2$ as well. This ratio is quite different from the
SELEX data $0.14\pm 0.06$. The summed decay width of those three channels is
approximately 21.7 MeV, already larger than the observed bound for the full
width ($\leq 17$ MeV). Furthermore, assuming $D_{sJ}^+(2632)$ is $1^{-}$ state,
we also explore the possibility of $S-D$ wave mixing to explain the SELEX
observation. Based on our analysis, we suspect that it is too early to conclude
that $D^{+}_{sJ}(2632)$ is the first radial excitation of the $1^{-}$ ground
state $D^{*}_{s}(2112)$. More precise measurements of the relative ratios and
the total decay width are urgently required especially for $S-D$ wave mixing.


title: Dynamics and Decay of Heavy-Light Hadrons

abstract:
  Recent signals for narrow hadrons containing heavy and light flavours are
compared with quark model predictions for spectroscopy, strong decays, and
radiative transitions. In particular, the production and identification of
excited charmed and cs states are examined with emphasis on elucidating the
nature of $0^+$ and $1^+$ states. Roughly 200 strong decay amplitudes of $D$
and $D_s$ states up to 3.3 GeV are presented. Applications include determining
flavour content in $\eta$ mesons and the mixing angle in $P$ and $D$ wave
states and probes of putative molecular states. We advocate searching for
radially excited $D_s^*$ states in B decays.


title: Quark Loop Contribution to Neutron EDM from R-parity Violation

abstract:
  We present a detailed analysis together with numerical calculations on
one-loop contributions to the neutron electric dipole moment from supersymmetry
without R parity, focusing on the quark-scalar loop contributions. Complete
formulas are given for the various contributions through the quark dipole
operators. Analytical expressions illustrating the explicit role of the
R-parity violating parameters are given following perturbative diagonalization
of mass-squared matrices for the scalars. Dominant contributions come from the
combinations $B_i^{\ast} \lambda^{\prime}_{ij1}$ for which we obtain robust
bounds. Even if the R-parity violating couplings are real, CKM phase does
induce RPV contribution and for some cases such a contribution is as strong as
contribution from phases in the R-parity violating couplings. Hence, we have
bounds directly on $|B_i^{\ast} \l^{\prime}_{ij1}|$ even if the parameters are
all real.


title:
Structure of the confining solutions for SU(3)-Yang-Mills equations and
  confinement mechanism

abstract:
  Structure of exact solutions modelling confinement is discussed for
SU(3)-Yang-Mills equations and uniqueness of such confining solutions is proved
in a certain sense. Relationship of the obtained results to QCD and the
confinement mechanism is considered. Incidentally the Wilson confinement
criterion for the found solutions is verified and also numerical estimates for
strength of magnetic colour field responsible for linear confinement are
adduced in the ground state of charmonium.


title: Aspects of the Tetrahedral Neutrino Mass Matrix

abstract:
  The four-parameter tetrahedral neutrino mass matrix introduced earlier by the
author is studied in two specific limits, both having only two parameters and
resulting in theta_13=0, theta_23=pi/4, and tan^2 theta_12=1/2. One limit
corresponds to a recent proposal which predicts a normal ordering of neutrino
masses; the other is new and allows both inverted and normal ordering.


title:
Strong Color Field Baryonic Remnants in Nucleus-Nucleus Collisions at
  200A GeV

abstract:
  The effects of strong color electric fields (SCF) on the baryon production at
RHIC are studied in the framework of HIJING/B\=B (v2.0) model. The particle
species dependence of nuclear modification factors (NMF) are analyzed for Au+Au
collisions at 200A GeV. A doubling of the string tension leading to a
modification of the strangeness suppression according to Schwinger mechanism is
shown to provide an alternate explanation to coalescence models for the
interpretation of the observed baryon and meson production at moderate $p_T$
and results in a predicted enhancement in the (multi)strange (anti)hyperon
production.


title: Constraining the New Aether: Gravitational Cherenkov Radiation

abstract:
  We study the simplest concrete theory for spontaneous Lorentz violation, the
``New Aether Theory'' of Jacobson and Mattingly, which is a vector-tensor
gravitational theory with a fixed-modulus condition on the vector field. We
show that the observation of ultra-high energy cosmic rays (which implies the
absence of energy loss via various Cherenkov type processes) places constraints
on the parameters of this theory, which are much stronger than those previously
found in the literature and are also stronger than the constraints generically
arising when gravity displays sub-luminal propagation.


title: The Fate of Non-Abelian Plasma Instabilities in 3+1 Dimensions

abstract:
  Plasma instabilities can play a fundamental role in plasma equilibration.
There are similarities and differences between plasma instabilities in abelian
and non-abelian gauge theories. In particular, it has been an open question
whether non-abelian self-interactions are the limiting factor in the growth of
non-abelian plasma instabilities. We study this problem with 3+1 dimensional
numerical simulations. We find that non-abelian plasma instabilities behave
very differently from abelian ones once they grow to be non-perturbatively
large, in contrast with earlier results of 1+1 dimensional simulations. In
particular, they grow more slowly at late times, with linear rather than
exponential dependence of magnetic energy on time.


title: Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion

abstract:
  Recent experimental evidence for the Theta^+(1540) has given rise to much
theoretical interest in exotic baryons. The Theta^+ is a baryon that has
strangeness S=+1, meaning that it contains an anti-strange quark. Thus it
cannot be constructed from three quarks, unlike all other known baryons; it
needs at least an extra quark-antiquark pair. It is usually modeled as a
pentaquark state in the 10 bar representation of flavor SU(3), with flavor
content \bar{s}uudd.
  This thesis considers possible heavy pentaquarks, in which the antiquark is
charmed or bottom rather than strange. In the context of the diquark model of
Jaffe and Wilczek, it is argued that negative-parity pentaquarks of this type
may be lighter than their positive-parity counterparts, and hence are likely to
be stable against strong decay. Estimates are made for their masses, and their
weak decays are discussed. Isospin relations are found between the decay rates
for different possible decay channels.
  Negative-parity heavy pentaquarks are also considered in a less
model-dependent way, in the context of a 1/N_c expansion, where N_c is the
number of colors. Heavy quark effective theory is also employed. Mass relations
are found between the mass splittings of heavy pentaquarks and those of
nonexotic baryons, and SU(3)-breaking corrections to these relations are
computed. The results could be helpful in interpreting experimental data if
heavy pentaquarks are observed.


title:
Direct extraction of transversity and its accompanying T-odd
  distribution from the unpolarized and single-polarized Drell-Yan processes

abstract:
  The Drell-Yan (DY) processes with unpolarized colliding hadrons and with the
single transversally polarized hadron are considered. The possibility of direct
(without any model assumptions) extraction of both transversity and its
accompanying T-odd parton distribution functions (PDF) is discussed. For DY
processes measurements planned at GSI the preliminary estimations demonstrate
that it is quite real to extract both transversity and its accompanying T-odd
PDF in the PAX conditions.


title:
Dimension two condensates and the Polyakov loop above the deconfinement
  phase transition

abstract:
  We show that recent available lattice data for the renormalized Polyakov loop
above the deconfinement phase transition exhibit unequivocal inverse power
temperature corrections driven by a dimension 2 gluon condensate. This simple
ansatz provides a good overall description of the data throughout the
deconfinement phase until near the critical temperature with just two
parameters. One of the parameters is consistent with perturbation theory while
a second, non perturbative, parameter provides a numerical value of the
condensate which is close to existing zero and finite temperature
determinations.


title: Explaining LSND by a decaying sterile neutrino

abstract:
  We propose an explanation of the LSND evidence for electron antineutrino
appearance based on neutrino decay. We introduce a heavy neutrino, which is
produced in pion and muon decays because of a small mixing with muon neutrinos,
and then decays into a scalar particle and a light neutrino, predominantly of
the electron type. We require values of $g m_4\sim$ few eV, $g$ being the
neutrino--scalar coupling and $m_4$ the heavy neutrino mass, e.g. $m_4$ in the
range from 1 keV to 1 MeV and $g \sim 10^{-6} - 10^{-3}$. Performing a fit to
the LSND data as well as all relevant null-result experiments, we show that all
data can be explained within this decay scenario. In the minimal version of the
decay model, we predict a signal in the upcoming MiniBooNE experiment
corresponding to a transition probability of the same order as seen in LSND. In
addition, we show that extending our model to two nearly degenerate heavy
neutrinos it is possible to introduce CP violation in the decay, which can lead
to a suppression of the signal in MiniBooNE running in the neutrino mode. We
briefly discuss signals in future neutrino oscillation experiments, we show
that our scenario is compatible with bounds from laboratory experiments, and we
comment on implications in astrophysics and cosmology.


title:
Associated multiplicity to high $p_T$ events and percolation of colour
  sources

abstract:
  We show that the multiplicity distribution associated to high $p_T$ events is
given in terms of the total multiplicity distribution in an universal way due
to the fact that these events are self-shadowed. In particular, the mean
associated multiplicity is related to the fluctuations on the multiplicity
distribution. In the framework of percolation of strings these fluctuations are
related to clustering and as a result the associated multiplicity presents a
peculiar dependence on centrality which can be experimentally tested.


title: Signatures of cosmic tau-neutrinos

abstract:
  The importance and signatures of cosmic tau--(anti)neutrinos have been
studied for upward-- and downward--going $\mu^-+\mu^+$ and hadronic shower
event rates relevant for present and future underground water or ice detectors,
utilizing the unique and reliable ultrasmall--$x$ predictions of the dynamical
(radiative) parton model. The upward--going $\mu^- +\mu^+$ event rates
calculated just from cosmic $\nu_{\mu}+\bar{\nu}_{\mu}$ fluxes are sizeably
enhanced by taking into account cosmic $\nu_{\tau}+ \bar{\nu}_{\tau}$ fluxes
and their associated $\tau^- +\tau^+$ fluxes as well. The coupled transport
equations for the upward--going $\stackrel{(-)}{\nu}_{\tau}$ flux traversing
the Earth imply an enhancement of the attenuated and regenerated
$\stackrel{(-)}{\nu}_{\tau}$ flux typically around $10^4-10^5$ GeV with respect
to the initial cosmic flux. This enhancement turns out to be smaller than
obtained so far, in particular for flatter initial cosmic fluxes behaving like
$E_{\nu}^{-1}$. Downward--going $\mu^- +\mu^+$ events and in particular the
background--free and unique hadronic `double bang' and `lollipop' events allow
to test downward--going cosmic $\nu_{\tau} +\bar{\nu}_{\tau}$ fluxes up to
about $10^9$ GeV.


title: Collinear Limits in QCD from MHV Rules

abstract:
  We consider multi-parton collinear limits of QCD amplitudes at tree level.
Using the MHV formalism we specify the underlying analytic structure of the
resulting multi-collinear splitting functions. We derive general results for
these splitting functions that are valid for specific numbers of negative
helicity partons and an arbitrary number of positive helicity partons (or vice
versa).


title: The strange formula of Dr. Koide

abstract:
  We present a short historical and bibliographical review of the lepton mass
formula of Yoshio Koide, as well as some speculations on its extensions to
quark and neutrino masses, and its possible relations to more recent
theoretical developments.


title: Mini Z' Burst from Relic Supernova Neutrinos and Late Neutrino Masses

abstract:
  In models in which neutrinos are light, due to a low scale of symmetry
breaking, additional light bosons are generically present. We show that the
interaction between diffuse relic supernova neutrinos (RSN) and the cosmic
background neutrinos, via exchange of these light scalars, can result in a
dramatic change of the supernova (SN) neutrinos flux. Measurement of this
effect with current or future experiments can provide a spectacular direct
evidence for the low scale models. We demonstrate how the observation of
neutrinos from SN1987A constrains the symmetry breaking scale of the above
models. We also discuss how current and future experiments may confirm or
further constrain the above models, either by detecting the ``accumulative
resonance'' that diffuse RSN go through or via a large suppression of the flux
of neutrinos from nearby < O(Mpc) SN bursts.


title: Split Fermions Baryogenesis from the Kobayashi-Maskawa Phase

abstract:
  A new scenario of baryogenesis is presented, within the split fermions
framework. Our model employs a first order phase transition of the localizer
field. The standard model (SM), Kobayashi-Maskawa phase induces a sizable CP
asymmetry. The usual suppression of CP violation which arises in the SM
baryogenesis is absent due to the existence of order one Yukawa couplings
before the fermions are localized in the extra dimension. Models of the above
type naturally contain B-L violating operators, allowed by the SM symmetries,
which induce the baryon asymmetry. Our mechanism demonstrates the following
concept: the flavor puzzle and the SM failure to create the baryon asymmetry
are linked and may have a common resolution which does not rely on introduction
of new CP violating sources.


title: Determination of V_us: recent progresses from theory

abstract:
  Recent experimental and theoretical results on kaon semileptonic decays have
significantly improved the determination of the CKM matrix element V_us. After
briefly summarizing the impact of the new experimental determinations, I will
concentrate in this talk on the theoretical progresses, coming in particular
from lattice QCD calculations. These results lead to the estimate |V_us|=0.2250
+- 0.0021, in good agreement with the expectation based on the determination of
|V_ud| and the unitarity of the CKM matrix.


title: Chiral constituent quark model and the coupling strength of eta'

abstract:
  Using the latest data pertaining to \bar u-\bar d asymmetry and the spin
polarization functions, detailed implications of the possible values of the
coupling strength of the singlet Goldstone boson \eta' have been investigated
in the \chiCQM with configuration mixing. Using \Delta u, \Delta_3, \bar u-\bar
d and \bar u/\bar d, the possible ranges of the coupling parameters a, \alpha^
2, \beta^ 2 and \zeta^ 2, representing respectively the probabilities of
fluctuations to pions, K, \eta and \eta^{'}, are shown to be 0.10 \lesssim a
\lesssim 0.14, 0.2\lesssim \alpha \lesssim 0.5, 0.2\lesssim \beta \lesssim 0.7
and 0.10 lesssim |\zeta| \lesssim 0.70. To constrain the coupling strength of
\eta', detailed fits have been obtained for spin polarization functions, quark
distribution functions and baryon octet magnetic moments corresponding to the
following sets of parameters: a=0.1, \alpha=0.4, \beta=0.7, |\zeta|=0.65 (Case
I); a=0.1, \alpha=0.4, \beta=0.6, |\zeta|=0.70 (Case II); a=0.14, \alpha=0.4,
\beta=0.2, \zeta=0 (Case III) and a=0.13, \alpha=\beta=0.45, |\zeta|=0.10 (Case
IV). Case I represents the calculations where a is fixed to be 0.1, in
accordance with earlier calculations, whereas other parameters are treated free
and the Case IV represents our best fit. The fits clearly establish that a
small non-zero value of the coupling of \eta' is preferred over the higher
values of \eta' as well as when \zeta=0, the latter implying the absence of
\eta' from the dynamics of \chiCQM. Our best fit achieves an overall excellent
fit to the data, in particular the fit for \Delta u, \Delta d, \Delta_8 as well
as the magnetic moments \mu_{n}, \mu_{\Sigma^-}, \mu_{\Sigma^+} and \mu_{\Xi^-}
is almost perfect, the \mu_{\Xi^-} being a difficult case for most of the
similar calculations.


title: Boson boson scattering at LHC

abstract:
  We analyse some features of WW scattering processes at LHC. The severe
cancellations between fusion diagrams and the other contributions evidence the
necessity of complete calculations for studying the high WW invariant mass
region and disentangling the standard Higgs case from new physics.


title:
The Absolute Neutrino Mass Scale, Neutrino Mass Spectrum, Majorana
  CP-Violation and Neutrinoless Double-Beta Decay

abstract:
  Assuming 3-$\nu$ mixing, massive Majorana neutrinos and neutrinoless
double-beta (\betabeta-) decay generated only by the (V-A) charged current weak
interaction via the exchange of the three Majorana neutrinos, we briefly review
the predictions for the effective Majorana mass $\meff$ in \betabeta-decay and
reanalyse the physics potential of future \betabeta-decay experiments to
provide information on the type of neutrino mass spectrum, the absolute scale
of neutrino masses, and Majorana CP-violation in the lepton sector. Using as
input the most recent experimental results on neutrino oscillation parameters
and the prospective precision that can be achieved in future measurements of
the latter, we perform a statistical analysis of a \betabeta-decay half-life
measurement taking into account experimental and theoretical errors, as well as
the uncertainty implied by the imprecise knowledge of the corresponding nuclear
matrix element (NME). We show, in particular, how the possibility to
discriminate between the different types of neutrino mass spectra and the
constraints on the absolute neutrino mass scale depend on the mean value and
the experimental error of $\meff$ and on the NME uncertainty. The constraints
on Majorana CP-violation phases in the neutrino mixing matrix, which can be
obtained from a measurement of $\meff$ and additional data on the sum of
neutrino masses, are also investigated in detail. We estimate the required
experimental accuracies on both types of measurements, and the required
precision in the NME permitting to address the issue of Majorana CP-violation
in the lepton sector.


title:
Mixed Wino Dark Matter: Consequences for Direct, Indirect and Collider
  Detection

abstract:
  In supersymmetric models with gravity-mediated SUSY breaking and gaugino mass
unification, the predicted relic abundance of neutralinos usually exceeds the
strict limits imposed by the WMAP collaboration. One way to obtain the correct
relic abundance is to abandon gaugino mass universality and allow a mixed
wino-bino lightest SUSY particle (LSP). The enhanced annihilation and
scattering cross sections of mixed wino dark matter (MWDM) compared to bino
dark matter lead to enhanced rates for direct dark matter detection, as well as
for indirect detection at neutrino telescopes and for detection of dark matter
annihilation products in the galactic halo. For collider experiments, MWDM
leads to a reduced but significant mass gap between the lightest neutralinos so
that chi_2^0 two-body decay modes are usually closed. This means that dilepton
mass edges-- the starting point for cascade decay reconstruction at the CERN
LHC-- should be accessible over almost all of parameter space. Measurement of
the m_{\tz_2}-m_{\tz_1} mass gap at LHC plus various sparticle masses and cross
sections as a function of beam polarization at the International Linear
Collider (ILC) would pinpoint MWDM as the dominant component of dark matter in
the universe.


title: Modified Boltzmann Transport Equation and Freeze Out

abstract:
  We study Freeze Out process in high energy heavy ion reaction. The
description of the process is based on the Boltzmann Transport Equation (BTE).
We point out the basic limitations of the BTE approach and introduce Modified
BTE. The Freeze Out dynamics is presented in the 4-dimensional space-time in a
layer of finite thickness, and we employ Modified BTE for the realistic Freeze
Out description.


title:
On the Projectile-Target Duality of the Color Glass Condensate in the
  Dipole Picture

abstract:
  Recently Kovner and Lublinsky proposed a set of equations which can be viewed
as dual to JIMWLK evolution. We show that these dual equations have a natural
dipole-like structure, as conjectured by Kovner and Lublinsky. In the high
energy large N_c limit these evolution equations reduce to equations previously
derived in the dipole model. We also show that the dual evolution kernel is
scheme dependent, although its action on the weight functional describing a
high energy state gives a unique result.


title:
Renormalons at the boundaries between perturbative and non-perturbative
  QCD

abstract:
  The basis of renormalon calculus is briefly discussed. The method is applied
to study QCD predictions for three sum rules of deep-inelastic scattering,
namely for the Gross-Llewellyn Smith, Bjorken polarized and unpolarized sum
rules. It is shown that the renormalon structures of theses sum rules are
closely related. These properties are giving us the hint that theoretical
expressions of these three sum rules are similar both in the and
non-perturbative sectors. Some phenomenological consequances of the new
relations are discussed.


title: Dynamical fermion mass generation by a strong Yukawa interaction

abstract:
  We consider a model with global Abelian chiral symmetry of two massless
fermion fields interacting with a complex massive scalar field. We argue that
the Schwinger-Dyson equations for the fermion and boson propagators admit
ultraviolet-finite chiral-symmetry-breaking solutions provided the Yukawa
couplings are large enough. The fermions acquire masses and the elementary
excitations of the complex scalar field are the two real spin-zero particles
with different masses. As a necessary consequence of the dynamical chiral
symmetry breakdown both in the fermion and scalar sectors, one massless
pseudoscalar Nambu--Goldstone boson appears in the spectrum as a collective
excitation of both the fermion and the boson fields. Its effective couplings to
the fermion and boson fields are calculable.


title: Electroweak corrections uncertainty on the W mass measurement at LEP

abstract:
  The systematic uncertainty on the W mass and width measurement resulting from
the imperfect knowledge of electroweak radiative corrections is discussed. The
intrinsic uncertainty in the 4-f generator used by the DELPHI Collaboration is
studied following the guidelines of the authors of YFSWW, on which its
radiative corrections part is based. The full DELPHI simulation, reconstruction
and analysis chain is used for the uncertainty assessment. A comparison with
the other available 4-f calculation implementing DPA O(alpha) corrections,
RacoonWW, is also presented. The uncertainty on the W mass is found to be below
10 MeV for all the WW decay channels used in the measurement.


title: SU(6) Extension of the Weinberg-Tomozawa Meson-Baryon Lagrangian

abstract:
  A consistent SU(6) extension of the Weinberg-Tomozawa meson-baryon chiral
Lagrangian is constructed which incorporates vector meson and baryon decuplet
degrees of freedom. The corresponding Bethe-Salpeter approximation predicts the
existence of an isoscalar spin-parity ${3/2}^-$ $K^*N$ bound state (strangeness
+1) with a mass around 1.7--1.8$ $GeV. It is the highest hypercharge state of
an antidecuplet SU(3) representation and it is unstable through $K^*$ decay.
The estimated width of this state (neglecting d-wave $KN$ decay) turns out to
be small ($\Gamma \le 15 $MeV). Clear signals of this resonance would be found
in reactions like $\gamma p \to {\bar K}^0 p K^+ \pi^-$ by looking at the three
body $p K^+ \pi^-$ invariant mass.


title: Hadronic EDM Constraints on Orbifold GUTs

abstract:
  We point out that the null results of the hadronic electric dipole moment
(EDM) searches constrain orbifold grand unified theories (GUTs), where the GUT
symmetry and supersymmetry (SUSY) are both broken by boundary conditions in
extra dimensions and it leads to rich fermion and sfermion flavor structures. A
marginal chromoelectric dipole moment (CEDM) of the up quark is induced by the
misalignment between the CP violating left- and right-handed up-type squark
mixings, in contrast to the conventional four-dimensional SUSY GUTs. The up
quark CEDM constraint is found to be as strong as those from charged lepton
flavor violation (LFV) searches. The interplay between future EDM and LFV
experiments will probe the structures of the GUTs and the SUSY breaking
mediation mechanism.


title: Color dipoles from Bremsstrahlung in QCD evolution at high energy

abstract:
  We show that the recently developed Hamiltonian theory for high energy
evolution in QCD in the dilute regime and in the presence of Bremsstrahlung is
consistent with the color dipole picture in the limit where the number of
colors N_c is large. The color dipoles are quark-antiquark pairs which can
radiate arbitrarily many soft gluons, and the evolution consists in the
splitting of any such a dipole into two. We construct the color glass weight
function of an onium as a superposition of color dipoles, each represented by a
pair of Wilson lines. We show that the action of the Bremsstrahlung Hamiltonian
on this weight function and in the large-N_c limit generates the evolution
expected from the dipole picture. We construct the dipole number operator in
the Hamiltonian theory and deduce the evolution equations for the dipole
densities, which are again consistent with the dipole picture. We argue that
the Bremsstrahlung effects beyond two gluon emission per dipole are irrelevant
for the calculation of scattering amplitudes at high energy.


title:
The cross sections of the muons and charged pions pairs production at
  electron-positron annihilation near the threshold

abstract:
  The processes of muons (tau) and charged pions pairs production at
electron-positron annihilation with first order radiative corrections are
considered. The calculation results are presented assuming the energies of
final particles (cms implied) to be not far significantly from threshold
production. The invariant mass distributions for the muon (tau) and pion pairs
are obtained both for the initial and final state radiation. Some analytical
calculations are illustrated numerically. The pions were assumed to be
point-like objects and scalar QED was applied for calculation. The QED
radiative corrections related to the final state radiation, additional to the
well known Coulomb factor, are treated near threshold region exactly.


title: Parametric form of QCD travelling waves

abstract:
  We derive parametric travelling-wave solutions of non-linear QCD equations.
They describe the evolution towards saturation in the geometric scaling region.
The method, based on an expansion in the inverse of the wave velocity, leads to
a solvable hierarchy of differential equations. A universal parametric form of
travelling waves emerges from the first two orders of the expansion.


title:
Two-loop beta-functions and their effects for the R-parity Violating
  MSSM

abstract:
  We present the full two-loop beta-functions for the MSSM including R-parity
violating couplings. We analyse the effect of two-loop running on the bounds on
R-parity violating couplings, on the nature of the LSP and on the stop masses.


title: Chiral dynamics of kaon-nucleon interactions, revisited

abstract:
  The anti-kaon nucleon system close to threshold is analyzed in view of the
new accurate DEAR kaonic hydrogen data. The calculations are performed using
chiral SU(3) effective field theory in combination with non-perturbative
schemes based on coupled channels. Several variants of such approaches are
compared with experimental data and the differences in the results are
discussed. Coulomb and isospin breaking effects turn out to be important and
are both taken into account. The pole structure of the Lambda(1405) resonance
close to the anti-kaon nucleon threshold is critically examined.


title:
Detecting the Standard Model Higgs Boson in the WW decay channel using
  forward proton tagging at the LHC

abstract:
  We present a detailed study of the central exclusive production of the
Standard Model Higgs Boson in the WW decay channel at the LHC. We include
estimates of the experimental acceptance, including that of the proposed proton
tagging detectors at 220m and 420m around either ATLAS and / or CMS, and the
level 1 trigger acceptances. We give first estimates of the photon-photon and
glue-glue background processes in the semi-leptonic and fully-leptonic decay
channels. We find that there will be a detectable signal for Higgs masses
between 140 GeV and 200 GeV, and that the backgrounds should be controllable.


title: Constraints on String Resonance Amplitudes

abstract:
  We perform a global analysis of the tree-level open-string amplitudes in the
limit $s << M_S^2$ . Based on the present data from the Tevatron, HERA, and
LEP~2, we set a lower limit on the string scale $M_S >= 0.69 - 1.96$ TeV at 95
% confidence level for the Chan-Paton factors $|T|=0 - 4$. We also estimate the
expected sensitivities at the LHC, which can be as high as 19 TeV for $|T|=4$.


title: Cosmic Superstrings and Primordial Magnetogenesis

abstract:
  Cosmic superstrings are produced at the end of brane inflation. Their
properties are similar to cosmic strings arising in grand unified theories.
Like cosmic strings they can give rise to a primordial magnetic field, as a
result of vortical motions stirred in the ionised plasma by the gravitational
pull of moving string segments. The resulting magnetic field is both strong
enough and coherent enough to seed the galactic dynamo and explain the observed
magnetic fields of the galaxies.


title: B_s-B_s-bar mixing and lepton flavor violation in SUSY SO(10)

abstract:
  We present a quantitative analysis of the flavor physics of a SUSY SO(10)
model proposed by Chang, Masiero, and Murayama, linking b -> s transitions to
the large observed atmospheric neutrino mixing. We consider B_s-B_s-bar mixing
and tau -> mu gamma and discuss their correlation paying careful attention to
their different dependences on model parameters. Our analysis shows that an
order-of-magnitude enhancement of the mass difference with respect to the
Standard Model is possible and can be reconciled with the most stringent bounds
on lepton flavor violation. The situation for various Delta B=1 decays is
discussed qualitatively.


title: Supersymmetry and Electroweak Breaking in the Interval

abstract:
  Hypermultiplets are considered in the five-dimensional interval where all
fields are continuous and the boundary conditions are dynamically obtained from
the action principle. The orbifold boundary conditions are obtained as
particular cases. We can interpret the Scherk-Schwarz supersymmetry breaking as
a misalignment of boundary conditions while a new source of supersymmetry
breaking corresponding to a mismatch of different boundary parameters is
identified. The latter can be viewed as coming from boundary supersymmetry
breaking masses for hyperscalars and the nature of the corresponding
supersymmetry breaking parameter is analyzed. For some regions of the parameter
space where supersymmetry is broken (either by Scherk-Schwarz boundary
conditions or by boundary hyperscalar masses) electroweak symmetry breaking can
be triggered at the tree level.


title: Mach shocks induced by partonic jets in expanding quark-gluon plasma

abstract:
  We study Mach shocks generated by fast partonic jets propagating through a
deconfined strongly-interacting matter. Our main goal is to take into account
different types of collective motion during the formation and evolution of this
matter. We predict a significant deformation of Mach shocks in central Au+Au
collisions at RHIC and LHC energies as compared to the case of jet propagation
in a static medium. The observed broadening of the near-side two-particle
correlations in pseudorapidity space is explained by the Bjorken-like
longitudinal expansion. Three-particle correlation measurements are proposed
for a more detailed study of the Mach shock waves.


title:
On the Relation Between x-dependence of the Higher Twist Contribution to
  F_3 and g_1^p - g_1^n

abstract:
  We compare the higher twist (HT) contribution to the unpolarized structure
function $F_3$ with that one to the nonsinglet combination g_1^p - g_1^n of the
polarized proton and neutron structure functions using the assumption that the
HT contributions to the Gross-Llewellyn Smith and the Bjorken sum rules are
similar. We have found, that the relation 1/3x h^{xF_3}(x) ~ 6/g_A h^{g_1^p -
g_1^n}(x) is valid for x > 0.1 and for x > 0.2 in the case of LO and NLO QCD
approximations, respectively.


title: nuMSM--Predictions for Neutrinoless Double Beta Decay

abstract:
  We give the prediction on the effective Majorana mass for neutrinoless double
$\beta$ decay in a simple extension of the Standard Model (nuMSM). The model
adds three right-handed neutrinos with masses smaller than the electroweak
scale, and explains dark matter of the Universe. This leads to constraints
1.3meV<m_{bb}^{NH}<3.4meV in normal neutrino mass hierarchy and
13meV<m_{bb}^{IH}<50meV in inverted hierarchy.


title: On the Prospects of Tau Neutrino Astronomy in Gev Energies and Beyond

abstract:
  We point out the opportunity of tau neutrino astronomy for neutrino energies
of the order of 10 GeV to 10$^{3}$ GeV. In this energy range, it is
demonstrated that the flavor dependence in the background atmospheric neutrino
flux leads to drastically different prospects between the observation of
astrophysical muon neutrinos and that of astrophysical tau neutrinos. Taking
the galactic-plane neutrino flux as a targeted astrophysical source, we found
that the galactic-plane tau neutrino flux dominates over the atmospheric tau
neutrino flux for neutrino energies beyond 10 GeV. Hence the galactic-plane can
in principle be seen through tau neutrinos with energies greater than 10 GeV.
In a sharp contrast, the galactic-plane muon neutrino flux is overwhelmed by
its atmospheric background until the energy of $10^{6}$ GeV.


title:
From Primordial Quantum Fluctuations to the Anisotropies of the Cosmic
  Microwave Background Radiation

abstract:
  These lecture notes cover mainly three connected topics. In the first part we
give a detailed treatment of cosmological perturbation theory. The second part
is devoted to cosmological inflation and the generation of primordial
fluctuations. In part three it will be shown how these initial perturbation
evolve and produce the temperature anisotropies of the cosmic microwave
background radiation. Comparing the theoretical prediction for the angular
power spectrum with the increasingly accurate observations provides important
cosmological information (cosmological parameters, initial conditions).


title: On the charge of the photon

abstract:
  The papers setting upper bounds on the value of electric charge of the photon
are briefly reviewed. The theoretical framework of these bounds is shown to be
incomplete. Hence the bounds seem to be unreliable.


title: Oscillations of neutrinos produced and detected in crystals

abstract:
  We analyze neutrino oscillations in a thought experiment in which neutrinos
are produced by electrons on target nuclei. The neutrinos are detected through
charged lepton production in their collision with nuclei in detector. Both the
target and the detector are assumed to be crystals. The neutrinos are described
by propagators. We find that different neutrino mass eigenstates have equal
energies.
  We reproduce the standard phase of oscillations and demonstrate that at large
distance from the production point oscillations disappear.


title:
Reconstructing Dark Matter Density with e^+e^- Linear Collider in
  Focus-Point Supersymmetry

abstract:
  It has been known that, in the focus point scenario of supersymmetry, the
thermal relic of the lightest superparticle (LSP) is known to be a good
candidate of the cold dark matter. Assuming that the LSP in the focus-point
scenario be the cold dark matter, we address a question how and how well the
relic density of the LSP can be determined once the superparticles are found at
future e^+e^- linear collider. We will see that the determinations of the mass
of the LSP as well as those of the Higgsino-like chargino and neutralinos,
which will be possible by a study of the decay kinematics of the chargino or by
threshold scan, will give us important information to theoretically reconstruct
the relic density. Even if the Higgsino-like superparticles and the LSP are the
only superparticles which are kinematically accessible, relic density of the
LSP may be calculated with the accuracy of factor \sim 2; by adopting a mild
theoretical assumption or by determining the masses of the Wino-like
superparticles, uncertaintiy can be reduced to \sim 10 % or smaller.


title: Electroweak Corrections to Four-Fermion Production in e+e- Annihilation

abstract:
  The recently completed calculation of the full electroweak O(alpha)
corrections to the charged-current four-fermion production processes e+e- -->
nu_tau tau+ mu- anti-nu_mu, u anti-d mu- anti-nu_mu, and u anti-d s anti-c is
briefly reviewed. The calculation is performed using complex gauge-boson
masses, supplemented by complex couplings to restore gauge invariance. The
evaluation of the occurring one-loop tensor integrals, which include 5- and
6-point functions, requires new techniques. The effects of the complete
O(alpha) corrections to the total cross section and to some differential cross
sections of physical interest are discussed and compared to predictions based
on the double-pole approximation, revealing that the latter approximation is
not sufficient to fully exploit the potential of a future linear collider in an
analysis of W-boson pairs at high energies.


title: Relative Sizes of Diagrams in B -> pi pi, pi K Decays

abstract:
  We show that the neglect of the $(V-A)\times (V+A)$ pieces of the electroweak
penguin (EWP) amplitudes in the effective hamiltonian (the Wilson coefficients
are very small) allows one to calculate the relative size of some tree and EWP
diagrams in $B \to \pi \pi$ and $B\to \pi K$ decays. For both decay classes,
tree and EWP amplitudes are related using only isospin. In $B\to \pi \pi$, the
ratio $C/T$ is calculated using isospin alone; in $B\to \pi K$ it is found
using flavor SU(3) symmetry. These results are obtained by computing explicitly
all Wick contractions of all effective operators. Relations among these
contractions are found using Fierz identities and final-state symmetry
arguments.


title: Evaporation of charged bosonic condensate in cosmology

abstract:
  Cosmological evolution of equilibrium plasma with a condensate of
U(1)-charged bosonic field is considered. It is shown that the evaporation of
the condensate is very much different from naive expectations, discussed in the
literature, as well as from evaporation of non-equilibrium neutral condensate.
The charged condensate evaporates much slower than the decay of the
corresponding bosons. The evaporation rate is close to that of the cosmological
expansion. The plasma temperature, in contrast, drops much faster than usually,
namely as the third power of the cosmological scale factor. As a result the
universe becomes very cold and the cosmological charge asymmetry reaches a huge
value.


title: Dense Quarks, and the Fermion Sign Problem, in a SU(N) Matrix Model

abstract:
  We study the effect of dense quarks in a SU(N) matrix model of deconfinement.
For three or more colors, the quark contribution to the loop potential is
complex. After adding the charge conjugate loop, the measure of the matrix
integral is real, but not positive definite. In a matrix model, quarks act like
a background Z(N) field; at nonzero density, the background field also has an
imaginary part, proportional to the imaginary part of the loop. Consequently,
while the expectation values of the loop and its complex conjugate are both
real, they are not equal. These results suggest a possible approach to the
fermion sign problem in lattice QCD.


title: Minimal string-scale unification of gauge couplings

abstract:
  We look for the minimal particle content which is necessary to add to the
standard model in order to have a complete unification of gauge couplings and
gravity at the weakly coupled heterotic string scale. Using the current
precision electroweak data, we find that the presence of a vector-like fermion
at an intermediate scale and a non-standard hypercharge normalization are in
general sufficient to achieve this goal at two-loop level. If one requires the
extra matter scale to be below the TeV scale, then it is found that the
addition of three vector-like fermion doublets with a mass around 700 GeV
yields a perfect string-scale unification, provided that the affine levels are
kY=13/3, k2=1 and k3=2, as in the SU(5) X SU(5) string-GUT. Furthermore, if
supersymmetry is broken at the unification scale, the Higgs mass is predicted
in the range 125 GeV - 170 GeV, depending on the precise values of the top
quark mass and tan(beta) parameter.


title: The process p + pbar --> gamma + pi^0 within the handbag approch

abstract:
  We analyse the exclusive channel $p\pb\to\gamma \pi^0$, assuming handbag
dominance. The soft parts are parametrized in terms of CGLN amplitudes for the
$q\qb\to\gamma \pi^0$ transition and form factors for the $p\pb\to q\qb$ ones,
the latter represent moments of Generalized Distribution Amplitudes. We present
a combined fit to Fermilab data from E760 taking simultaneously into account
information from other exclusive reactions, especially from $p\pb\to
\gamma\gamma$ data. Overall a nicely consistent picture emerges, such that one
can hope, that our theoretical analysis will be reliable also for the
kinematics of GSI/FAIR, which hopefully will provide much more precise and
complete data. Consequently, data from this facility should improve our
knowledge both on the proton-antiproton distribution amplitudes and the pion
production mechanism.


title: Non-linear screening effects in high energy hadronic interactions

abstract:
  Non-linear effects in hadronic interactions are treated by means of enhanced
pomeron diagrams, assuming that pomeron-pomeron coupling is dominated by soft
partonic processes. It is shown that the approach allows to resolve a seeming
contradiction between realistic parton momentum distributions, measured in deep
inelastic scattering experiments, and the energy behavior of total
proton-proton cross section. Also a general consistency with both ``soft'' and
``hard'' diffraction data is demonstrated. An important feature of the proposed
scheme is that the contribution of semi-hard processes to the interaction
eikonal contains a significant non-factorizable part. On the other hand, the
approach preserves the QCD factorization picture for inclusive high p_t jet
production.