title: Pair production of scalar leptoquarks at the LHC

abstract:
  Theoretical predictions for the production cross sections of leptoquarks at
the CERN LHC are presented including higher-order QCD corrections. These
corrections reduce the dependence on the renormalization/factorization scales
significantly. Moreover, they are required to exploit the leptoquark mass reach
of the LHC experiments. In this sequel to an earlier analysis performed for the
Tevatron collider we extend the leptoquark analysis to the LHC energy.


title: Beyond the Standard Model Higgs Boson self-couplings at the LHC

abstract:
  A study of two-Higgs-doublet models (2HDM) in the decoupling limit reveals
the existence of parameter configurations with a large triple-Higgs
self-coupling as the only low-energy trace of a departure from a Standard Model
(SM) Higgs sector. This observation encourages attempts to search for double
Higgs production at the Large Hadron Collider (LHC) and its luminosity upgrade
(SLHC) even in mass regions which have been shown to be very hard to probe in
the context of SM-like Higgs self-couplings. In a scenario where only an
Intermediate Mass Higgs (IMH) boson, with 120 GeV <= m_h <= 140 GeV, is
discovered at the LHC, with measured couplings to fermions and gauge bosons
compatible with their SM values, we show that Higgs-pair production (with each
Higgs state decaying in two b bbar pairs) through Weak Boson Fusion (WBF) could
open a window on physics beyond the SM in the Higgs sector.


title: Parton distributions incorporating QED contributions

abstract:
  We perform a global parton analysis of deep inelastic and related
hard-scattering data, including ${\cal O}(\alpha_{\rm QED})$ corrections to the
parton evolution. Although the quality of the fit is essentially unchanged,
there are two important physical consequences. First, the different DGLAP
evolution of u and d type quarks introduces isospin violation, i.e. $u^p \neq
d^n$, which is found to be unambiguously in the direction to reduce the NuTeV
$\sin^2\theta_W$ anomaly. A second consequence is the appearance of photon
parton distributions $\gamma(x,Q^2)$ of the proton and the neutron. In
principle these can be measured at HERA via the deep inelastic scattering
processes $e N \to e\gamma X$; our predictions are in agreement with the
present data.


title: PeV-Scale Supersymmetry

abstract:
  Although supersymmetry has not been seen directly by experiment, there are
powerful physics reasons to suspect that it should be an ingredient of nature
and that superpartner masses should be somewhat near the weak scale. I present
an argument that if we dismiss our ordinary intuition of finetuning, and focus
entirely on more concrete physics issues, the PeV scale might be the best place
for supersymmetry. PeV-scale supersymmetry admits gauge coupling unification,
predicts a Higgs mass between 125 GeV and 155 GeV, and generally disallows
flavor changing neutral currents and CP violating effects in conflict with
current experiment. The PeV scale is motivated independently by dark matter and
neutrino mass considerations.


title:
Particle abundance in a thermal plasma: quantum kinetics vs. Boltzmann
  equation

abstract:
  We study the abundance of a particle species in a thermalized plasma by
introducing a quantum kinetic description based on the non-equilibrium
effective action. A stochastic interpretation of quantum kinetics in terms of a
Langevin equation emerges naturally. We consider a particle species that is
stable in the vacuum and interacts with \emph{heavier} particles that
constitute a thermal bath in equilibrium and define of a fully renormalized
single particle distribution function. The distribution function thermalizes on
a time scale determined by the \emph{quasiparticle} relaxation rate. The
equilibrium distribution function depends on the full spectral density and
features off-shell contributions to the particle abundance. A model of a
bosonic field $\Phi$ in interaction with two \emph{heavier} bosonic fields is
studied. We find substantial departures from the Bose-Einstein result both in
the high temperature and the low temperature but high momentum region. In the
latter the abundance is exponentially suppressed but larger than the
Bose-Einstein result. We obtain the Boltzmann equation in renormalized
perturbation theory and highlight the origin of the differences. We argue that
the corrections to the abundance of cold dark matter candidates are
observationally negligible and that recombination erases any possible spectral
distortions of the CMB. However we expect that the enhancement at high
temperature may be important for baryogenesis.


title:
Non-zero transversity distribution of the pion in a
  quark-spectator-antiquark model

abstract:
  We calculate the non-zero (na\"{i}ve) T-odd transverse momentum dependent
transversity distribution $h_1^{\perp}(x,\kp^2)$ of the pion in a
quark-spectator-antiquark model. The final-state interaction is modelled by the
approximation of one gluon exchange between the quark and the antiquark
spectator. Using our model result we estimate the unsuppressed cos2$\phi$
azimuthal asymmetry in unpolarized $\pi^-p$ Drell-Yan process. We find that the
transverse momentum dependence of $h_1^{\perp}(x,\kp^2)$ of the pion is the
same as that of $h_1^{\perp}(x,\kp^2)$ of the proton calculated from the
quark-scalar-diquark model, although the $x$ dependencies of them are different
from each other. This suggests a connection between cos2$\phi$ asymmetries in
Drell-Yan processes with different initial hadrons.


title:
Seesaw Invariance of Fritzsch-like Neutrino Mass Matrices, Leptogenesis
  and Lepton Flavor Violation

abstract:
  We propose a simple ansatz for neutrino phenomenology, in which the relevant
lepton mass matrices take the universal Fritzsch-like form and the seesaw
relation holds under a particular condition. There exist six textures of this
nature, but their consequences on neutrino oscillations are exactly the same.
We show that our scenario is viable to account for the cosmological baryon
number asymmetry via thermal leptogenesis. Its predictions for the
lepton-flavor-violating decays \mu -> e\gamma, tau -> \mu\gamma and \tau ->
e\gamma are also presented. We find that the branching ratios of these rare
processes depend strongly upon the phase parameters responsible for
leptogenesis and for leptonic CP violation in neutrino oscillations.


title:
Prospects for and status of the measurement of high x parton
  distributions at HERA

abstract:
  Inclusive neutral and charged current cross sections and structure functions
measured at HERA-I are briefly reviewed. The impact of these measurements on
parton density functions is discussed. The emphasis is put on the high x
region. A first result obtained using the HERA-II data is also shown followed
by future prospects for HERA.


title: Testing Quantum Chromodynamics with Antiprotons

abstract:
  The antiproton storage ring HESR to be constructed at GSI will open up a new
range of perturbative and nonperturbative tests of QCD in exclusive and
inclusive reactions. I discuss 21 tests of QCD using antiproton beams which can
illuminate novel features of QCD. The proposed experiments include the
formation of exotic hadrons, measurements of timelike generalized parton
distributions, the production of charm at threshold, transversity measurements
in Drell-Yan reactions, and searches for single-spin asymmetries. The
interactions of antiprotons in nuclear targets will allow tests of exotic
nuclear phenomena such as color transparency, hidden color, reduced nuclear
amplitudes, and the non-universality of nuclear antishadowing. The AdS/CFT
correspondence of large $N_C$ supergravity theory in higher-dimensional anti-de
Sitter space with supersymmetric QCD in 4-dimensional space-time has important
implications for hadron phenomenology in the conformal limit, including the
nonperturbative derivation of counting rules for exclusive processes and the
behavior of structure functions at large $x_{bj}.$ String/gauge duality also
predicts the QCD power-law fall-off of light-front Fock-state hadronic
wavefunctions with arbitrary orbital angular momentum at high momentum
transfer. I also review recent work which shows that the diffractive component
of deep inelastic scattering, single spin asymmetries, as well as nuclear
shadowing and antishadowing, cannot be computed from the LFWFs of hadrons in
isolation.


title: Threshold Corrections in Precision LHC Physics: QED otimes QCD

abstract:
  With an eye toward LHC processes in which theoretical precisions of 1 percent
are desired, we introduce the theory of the simultaneous YFS resummation of QED
and QCD to compute the size of the expected resummed soft radiative threshold
effects in precision studies of heavy particle production at the LHC. Our
results show that both QED and QCD soft threshold effects must be controlled to
be on the conservative side to achieve such precision goals.


title: Lepton flavor violating Higgs boson decays in the MSSM-seesaw

abstract:
  Lepton flavor violating Higgs boson decays (LFVHD) are studied in the context
of the Minimal Supersymmetric Standard Model (MSSM) enlarged with three right
handed neutrinos and their supersymmetric partners, and with the neutrino
masses being generated by the seesaw mechanism. We compute the partial widths
for these decays to one-loop order and analyze numerically the corresponding
branching ratios in terms of the MSSM and seesaw parameters. We analyze in
parallel the lepton flavor changing $\l_j\to l_i \gamma$ decays and explore the
maximum predicted rates for LFVHD, mainly for $H^0,A^0 \to \tau {\bar \mu}$
decays, by requiring compatibility with neutrino and $BR(\l_j\to l_i \gamma)$
data. We find LFVHD ratios of up to $10^{-5}$ in some regions of the
MSSM-seesaw parameter space.


title:
Massive Elementary Particles and Black Hole Physics in Resummed Quantum
  Gravity

abstract:
  We use exact results in a new approach to quantum gravity to discuss some
issues in black hole physics.


title: Quantum Corrections to Newton's Law in Resummed Quantum Gravity

abstract:
  We present the elements of resummed quantum gravity, a new approach to
quantum gravity based on the work of Feynman using the simplest example of a
scalar field as the representative matter. We show that we get a UV finite
quantum correction to Newton's law.


title: New Results on Precision Studies of Heavy Vector Boson Physics

abstract:
  We present new results for two important heavy vector boson physics
processes: (1), virtual corrections to hard bremsstrahlung which are relevant
to precision predictions for the radiative return process in Z boson production
at and beyond LEP2 energies ; and, (2), electric charge screening effects in
single W production with finite p_T, multiple photon radiation in high energy
collider physics processes. In both cases we show that we improve the
respective precision tag significantly. Phenomenological implications are
discussed.


title:
Infrared behaviour of the ghost-gluon vertex in Landau gauge Yang-Mills
  theory

abstract:
  A semi-perturbative calculation of the ghost-gluon vertex in Landau gauge
Yang-Mills theory in four and three Euclidean space-time dimensions is
presented. Non-perturbative gluon and ghost propagators are employed, which
have previously been calculated from a truncated set of Dyson--Schwinger
equations and which are in qualitative and quantitative agreement with
corresponding lattice results. Our results for the ghost-gluon vertex show only
relatively small deviations from the tree-level one in agreement with recent
lattice data. In particular, we do not see any sign for a singular behaviour of
the ghost-gluon vertex in the infrared.


title: Kaluza-Klein Dark Matter, Electrons and Gamma Ray Telescopes

abstract:
  Kaluza-Klein dark matter particles can annihilate efficiently into
electron-positron pairs, providing a discrete feature (a sharp edge) in the
cosmic $e^+ e^-$ spectrum at an energy equal to the particle's mass (typically
several hundred GeV to one TeV). Although this feature is probably beyond the
reach of satellite or balloon-based cosmic ray experiments (those that
distinguish the charge and mass of the primary particle), gamma ray telescopes
may provide an alternative detection method. Designed to observe very
high-energy gamma-rays, ACTs also observe the diffuse flux of electron-induced
electromagnetic showers. The GLAST satellite, designed for gamma ray astronomy,
will also observe any high energy showers (several hundred GeV and above) in
its calorimeter. We show that high-significance detections of an
electron-positron feature from Kaluza-Klein dark matter annihilations are
possible with GLAST, and also with ACTs such as HESS, VERITAS or MAGIC.


title:
Analysis of SO(2N) Couplings of Spinor and Tensor Representations in
  $SU(N)\times U(1)$ Invariant Forms

abstract:
  A review is given of a recently developed technique for the analysis of
SO(2N) invariant couplings which allows a full exhibition of the SU(N)
invariant content of couplings involving the SO(2N) semi-spinors $|\Psi_{\pm}>$
with chiralilty $\pm$ and tensor representations. We discuss the Basic Theorem
used in the analysis and then exhibit the technique by illustrative examples
for the computation of the trilinear and quartic couplings for the SO(10) case
involving three generations of 16 plets of matter.


title: New Signatures For Top In Hadron Collider

abstract:
  We study the signatures for new TeV resonances that couple to top or bottom
quarks both at the Tevatron Run II and at the LHC. We find that it is possible
to study these resonances when they are produced in association with a pair of
heavy quarks or in association with a single top at the LHC. In particular,
with an integrated luminosity of 300 fb$^{-1}$ at the LHC, it is possible to
probe resonance masses up to around 2 TeV.


title: New Results in Light-Front Phenomenology

abstract:
  The light-front quantization of gauge theories such as QCD in light-cone
gauge provides a frame-independent wavefunction representation of relativistic
bound states, simple forms for current matrix elements, explicit unitarity, and
a trivial vacuum. The freedom to choose the light-like quantization four-vector
provides an explicitly covariant formulation of light-front quantization and
can be used to determine the analytic structure of light-front wave functions
and to define a kinematical definition of angular momentum. The AdS/CFT
correspondence of large $N_C$ supergravity theory in higher-dimensional anti-de
Sitter space with supersymmetric QCD in 4-dimensional space-time has
interesting implications for hadron phenomenology in the conformal limit,
including an all-orders demonstration of counting rules for exclusive
processes. String/gauge duality also predicts the QCD power-law behavior of
light-front Fock-state hadronic wavefunctions with arbitrary orbital angular
momentum at high momentum transfer. The form of these near-conformal
wavefunctions can be used as an initial ansatz for a variational treatment of
the light-front QCD Hamiltonian. I also briefly review recent analyses which
shows that some leading-twist phenomena such as the diffractive component of
deep inelastic scattering, single-spin asymmetries, nuclear shadowing and
antishadowing cannot be computed from the LFWFs of hadrons in isolation.


title: Wilson line breaking and gauge coupling unification

abstract:
  We estimate the effect of threshold corrections coming from Wilson lines to
gauge coupling unification in the weakly coupled heterotic string with orbifold
compactification. By expressing the corrections in terms of an effective field
theory calculation we are able to estimate the minimal threshold corrections in
a realistic model without constructing the full string theory. Using this we
show that the effect of the gauge boson Kaluza Klein excitations is
systematically to reduce the string prediction for the unification scale. In
the case of discrete Wilson lines the effect of the Wilson lines on both the
gauge and matter sectors is fixed. We show that the combined effect of the
gauge and matter threshold corrections of the Kaluza Klein excitations of the
MSSM states can readily bring both the prediction for the unification scale and
for the strong coupling constant into good agreement with experiment.


title: Theoretical Overview: The New Mesons

abstract:
  After commenting on the state of contemporary hadronic physics and
spectroscopy, I highlight four areas where the action is: searching for the
relevant degrees of freedom, mesons with beauty and charm, chiral symmetry and
the D_{sJ} levels, and X(3872) and the lost tribes of charmonium.


title: Linear collider prospects on electroweak physics

abstract:
  Prospects on electroweak physics at a future International Linear Collider
(ILC) are summarized, including gauge coupling measurements, top quark physics
and Higgs physics.


title: The Ghost-Gluon Vertex in Landau Gauge Yang-Mills Theory

abstract:
  Possible mechanisms for gluon confinement in Yang-Mills theory in covariant
gauges are discussed briefly. Implications for the infrared behavior of the
Green's functions are outlined. Results for the gluon and Faddeev-Popov ghost
propagators from Dyson-Schwinger studies and lattice calculations are
presented. The importance of the ghost-gluon vertex in these studies is
discussed. Numerical results for a non-perturbatively constructed ghost-gluon
vertex in four and three space-time dimensions are presented.


title:
Isospin Amplitude Analysis of $B \to \pi\pi$ Decays within the Standard
  Model

abstract:
  Taking into account the recent measurements of the branching ratios and CP
asymmetries in the $B \to \pi\pi$ decays by the BABAR and BELLE collaborations,
an amplitude analysis based on the isospin symmetry is reported. These data
allow to get an independent determination of the CKM unitarity-triangle angle
$\gamma$. One of the best-fit solutions gives the range $\gamma = (65 \pm
5)^\circ$, in excellent agreement with the global CKM fit within the Standard
Model. The other parameters from this fit confirm the earlier analyses that the
data on $B \to \pi\pi$ decays require various topological amplitudes
(neglecting the electroweak ones) to be of comparable magnitude with large
strong-phase differences.


title: Axial Currents from CKM Matrix CP Violation

abstract:
  The first principle derivation of kinetic transport equations suggests that a
CP-violating mass term during the electroweak phase transition can induce axial
vector currents. Since the important terms are of first order in gradients
there is a possibility to construct new rephasing invariants that are
proportional to the CP phase in the Cabibbo-Kobayashi-Maskawa matrix and to
circumvent the upper bound of CP-violating contributions in the Standard Model,
the Jarlskog invariant.


title: Radiative vector meson decay

abstract:
  We study the radiative $\rho$, $\omega$ and $\phi$ decay into $\pi^0 \pi^0
\gamma$ and $\pi^0 \eta \gamma $ taking into account mechanisms in which there
are two sequential vector-vector-pseudoscalar or
axial-vector--vector--pseudoscalar steps followed by the coupling of a vector
meson to the photon, considering the final state interaction of the two mesons.
Other mechanisms in which two kaons are produced through the same sequential
mechanisms or from vector meson decay into two kaons which undergo final state
interaction leading to the final pair of pions or $\pi^0 \eta$, are also
considered. The results of the parameter free theory, together with the
theoretical uncertainties, are compared with the latest experimental results at
Frascati and Novosibirsk.


title: Beyond The Standard Model

abstract:
  The present lectures contain an introduction to possible new physics beyond
the Standard Model. Having in mind first of all accelerator experiments of the
nearest future we concentrate on supersymmetry, a new symmetry that relates
bosons and fermions, as the first target of experimental search. Since
supersymmetry is widely covered in the literature, we mostly consider novel
developments and applications to hadron colliders. We describe then the
so-called extra dimensional models in less detail and discuss their possible
manifestations.


title: B-decays in the heavy-quark expansion

abstract:
  Progress in the theoretical description of B-meson decays, in particular
decays to light hadrons, is reviewed. The factorization properties of such
decays can be analyzed using the soft-collinear effective theory. Applications
of the effective theory to both inclusive and exclusive decays are discussed.


title:
Heavy-quark condensate at zero and finite temperatures for various forms
  of the short-distance potential

abstract:
  With the use of the world-line formalism, the heavy-quark condensate in the
SU(N)-QCD is evaluated for the cases when the next-to-1/r term in the
quark-antiquark potential at short distances is either quadratic, or linear. In
the former case, which takes place in the stochastic vacuum model, the standard
QCD-sum-rules result is reproduced. In the other case, the condensate turns out
to be UV-finite only in less than four dimensions. This fact excludes a
possibility to have, in four dimensions, the linear term in the potential, as
well as short strings, at the distances smaller than the vacuum correlation
length. The use of the world-line formalism enables one to generalize further
both results for the condensate to the case of finite temperatures. A
generalization of the QCD-sum-rules result to the case of an arbitrary number
of space-time dimensions is also obtained and turns out to be UV-finite,
provided this number is smaller than six.


title:
Description of Heavy Quark Systems by means of Energy Dependent
  Potentials

abstract:
  We apply, for the first time, an energy dependent Schrodinger equation to
describe static properties of heavy quark systems, i.e. charmonium and
bottonium. We show that a good description of the eigenstates and reasonable
values for the widths can be obtained. Values of the radii and of the density
at the origin are also given. We compare the results to those deduced with a
Schrodinger equation implemented with potentials used so far. We note that the
energy dependence of the confining potential provides a natural mechanism for
the saturation of the spectra. Our results introduce a new class of potentials
for the description of heavy quark systems.


title: Factorisation, Parton Entanglement and the Drell-Yan Process

abstract:
  We discuss the angular distribution of the lepton pair in the Drell-Yan
process, hadron+hadron -> \gamma^* X -> l^+ l^- X. This process gives
information on the spin-density matrix \rho^{(q,\bar{q})} of the annihilating
quark-antiquark pair in q+\bar{q} -> l^+ l^-. There is strong experimental
evidence that even for unpolarised initial hadrons \rho^{(q,\bar{q})} is
nontrivial, and therefore the quark-antiquark system is polarised. We discuss
the possibilities of a general \rho^{(q,\bar{q})} -which could be entangled-
and a factorising \rho^{(q,\bar{q})}. We argue that instantons may lead to a
nontrivial \rho^{(q,\bar{q})} of the type indicated by experiments.


title: Spinless Salpeter Equation: Some (Semi-) Analytical Approaches

abstract:
  Several techniques for deriving semianalytical bounds on the energy
eigenvalues of the spinless Salpeter equation and for estimating the quality of
the corresponding approximate eigenstates are reviewed.


title: Conditions for detecting CP violation via neutrinoless double beta decay

abstract:
  Neutrinoless double beta decay data together with information on the absolute
neutrino masses obtained from the future KATRIN experiment and/or astrophysical
measurements give a chance to find CP violation in the lepton sector with
Majorana neutrinos. We derive and discuss necessary conditions which make
discovery of such CP violation possible for the future neutrino oscillation and
mass measurements data.


title:
Effective Hamiltonian for Non-Leptonic |Delta F| = 1 Decays at NNLO in
  QCD

abstract:
  We compute the effective hamiltonian for non-leptonic |Delta F| = 1 decays in
the standard model including next-to-next-to-leading order QCD corrections. In
particular, we present the complete three-loop anomalous dimension matrix
describing the mixing of current-current and QCD penguin operators. The
calculation is performed in an operator basis which allows to consistently use
fully anticommuting gamma_5 in dimensional regularization at an arbitrary
number of loops. The renormalization scheme dependences and their cancellation
in physical quantities is discussed in detail. Furthermore, we demonstrate how
our results are transformed to a different basis of effective operators which
is frequently adopted in phenomenological applications. We give all necessary
two-loop constant terms which allow to obtain the three-loop anomalous
dimensions and the corresponding initial conditions of the two-loop Wilson
coefficients in the latter scheme. Finally, we solve the renormalization group
equation and give the analytic expressions for the low-energy Wilson
coefficients relevant for non-leptonic B meson decays beyond next-to-leading
order in both renormalization schemes.


title: On an Intensity-Ratio Equivalence for Two Top-Quark Decay Couplings

abstract:
  For the t --> W b decay mode, an intensity-ratio equivalence for two distinct
Lorentz-invariant couplings is shown to be a consequence of symmetries of
tWb-transformations. Three explicit tWb-transformations connect the four
standard model's (SM) helicity amplitudes and the amplitudes in the case of an
additional chiral-tensorial-coupling of relative strength 53 GeV. Such a
coupling will arise if there is a large t_R --> b_L chiral
weak-transition-moment. Two commutator plus anti-commutator symmetry algebras
are generated from the 3 transformation matrices. Using these transformations,
the associated mass scales are related to the SM's electroweak scale v_EW =
246GeV$.


title: Symmetry relations for heavy-to-light meson form factors at large recoil

abstract:
  The description of large-recoil heavy-to-light meson form factors is reviewed
in the framework of soft-collinear effective theory. At leading power in the
heavy quark expansion, three classes of approximate symmetry relations arise.
The relations are compared to experimental data for $D\to K^*$ and $D_s\to
\phi$ form factors, and to light-cone QCD sum rule predictions for $B\to \pi$
and $B\to \rho$ form factors. Implications for the extraction of $|V_{ub}|$
from semileptonic $B\to \rho$ decays are discussed.


title:
Quarks-excited states or gluon-excited states, are the J^{PC}=1^{-+}
  hybrid mesons confirmed?

abstract:
  The existence of hadrons containing gluons as constituent particles (like
hybrid mesons) will involve the necessity to admit an hadronic spectroscopy
beyond the naive quark model. In the QGC model, the lowest J^{PC}= 1^{-+}
hybrid mesons may be built in two different modes: the GE-mode corresponding to
an angular momentum between the gluon and qqbar system, while the QE-mode
corresponding to an angular momentum between q and qbar. In this paper, we give
an analysis of the possible 1^{-+} hybrid mesons in the 1.32-2.04 GeV mass
range, and predictions on their decay. We discuss on the inconsistency between
some theoretical results and experimental data.We find that the 1^{-+}(1400
MeV), dominated by the QE-mode will decay in the favourite rho-pi channel,
while the GE-1^{-+}(1600 MeV), and the 1^{-+}(2.0 GeV), pure GE-hybrids, will
decay preferably into b1-pi channel (never observed); we indicate problems
concerning the observation of decay channels which are forbidden by theoretical
present models.The total decay widths of the 1^{-+}(2.0 GeV) and the
GE-1^{-+}(1600 MeV) being very large, this leads to a problem of their
observability as resonances. We may conclude that at this time, there is no
absolute confirmation of their existence, but some asked questions remain not
solved.


title:
Annihilation Rate of Heavy $0^{-+}$ Quarkonium in Relativistic Salpeter
  Method

abstract:
  Two-photon and two-gluon annihilation rates of $\eta_c$, $\eta'_c$, $\eta_b$
and $\eta'_b$ are estimated in the relativistic Salpeter method. By solving the
full Salpeter equation with a well defined relativistic wave function, we
estimate $M_{\eta_c}=2.979\pm 0.432$ GeV, $M_{\eta'_c}=3.566\pm 0.437$ GeV,
$M_{\eta_b}=9.364\pm 1.120$ GeV and $M_{\eta'_b}=9.941\pm 1.112$ GeV. We
calculated the transition amplitude using the Mandelstam formalism and estimate
the decay widths: $\Gamma(\eta_c \to 2\gamma)=7.14\pm 0.95$ KeV,
$\Gamma(\eta'_c \to 2\gamma)=4.44\pm 0.48$ KeV, $\Gamma(\eta_b \to
2\gamma)=0.384\pm 0.047$ KeV and $\Gamma(\eta'_b \to 2\gamma)=0.191\pm 0.025$
KeV. We also give estimates of total widths by the two-gluon decay rates:
$\Gamma_{tot}(\eta_c)=19.6\pm 2.6$ MeV, $\Gamma_{tot}(\eta'_c)=12.1\pm 1.3$
MeV, $\Gamma_{tot}(\eta_b)=6.98\pm 0.85$ MeV and $\Gamma_{tot}(\eta_b)=3.47\pm
0.45$ MeV.


title: A new dark matter candidate in low-tension brane-worlds

abstract:
  Brane world theories contain additional degrees of freedom related to the
geometry of the extra dimension space which can be understood as brane
oscillations (branons). In the case where the fundamental gravitational scale
is much larger than the brane tension scale, these branons are the only extra
degrees of freedom at low energies coming from the extra dimensions. Branons
are generically stable, weakly interacting and massive. They could be produced
in the next generation colliders and at the same time they are natural WIMP
like candidates for dark matter.


title:
Phenomenology of the SU(3)_c X SU(3)_L X U(1)_X model with right-handed
  neutrinos

abstract:
  A phenomenological analysis of the three-family local gauge group
$SU(3)_c\otimes SU(3)_L\otimes U(1)_X$ with right-handed neutrinos is carried
out. Instead of using the minimal scalar sector able to break the symmetry in a
proper way, we introduce an alternative set of four Higgs scalar triplets,
which combined with an anomaly-free discrete symmetry, produces a quark mass
spectrum without hierarchies in the Yukawa coupling contants. We also embed the
structure into a simple gauge group and show some conditions to achieve a low
energy gauge coupling unification, avoiding possible conflict with proton decay
bounds. By using experimental results from the CERN-LEP, SLAC linear collider
and atomic parity violation data, we update constraints on several parameters
of the model.


title:
Hidden Local Symmetry and Chiral Effective Theory for Vector and
  Axial-vector Mesons

abstract:
  In this paper, we present the full Lagrangian of mesons (pseudoscalars,
vectors and axial-vectors) to $O(p^4)$ by using the explicit global chiral
symmetry and hidden local symmetry in the chiral limit. In this approach, we
see that there are many other terms besides the usual eleven terms given in the
literature from hidden local symmetry approach. Of particular, there are some
terms in our full results which are important for understanding the vector
meson dominance and $\pi-\pi$ scattering and providing consistent predictions
on the decay rates of $a_1\to\gamma\pi$ and $a_1\to\rho\pi$ as well as for
constructing a consistent effective chiral Lagrangian with chiral perturbation
theory. It is likely that the structures of the effective chiral Lagrangian for
$O(p^4)$ given in the literature by using hidden local symmetry are incomplete
and consequently the resulting couplings are not reliable. It is examined that
the more general effective chiral Lagrangian given in present paper can provide
more consistent predictions for the low energy phenomenology of $\rho-a_1$
system and result in more consistent descriptions on the low energy behavior of
light flavor mesons.


title: Color Superconductivity from Supersymmetry

abstract:
  A supersymmetric composite model of color superconductivity is proposed.
Quarks and diquarks are dynamically generated as composite fields by a newly
introduced strong gauge dynamics. It is shown that the condensation of the
scalar component of the diquark supermultiplet occurs when the chemical
potential becomes larger than some critical value. We believe that the model
well captures aspects of the diquark condensate behavior and helps our
understanding of the diquark dynamics in real QCD. The results obtained here
might be useful when we consider a theory composed of quarks and diquarks.


title:
RunMC - an object-oriented analysis framework for Monte Carlo simulation
  of high-energy particle collisions

abstract:
  RunMC is an object-oriented framework aimed to generate and to analyse
high-energy collisions of elementary particles using Monte Carlo simulations.
This package, being based on C++ adopted by CERN as the main programming
language for the LHC experiments, provides a common interface to different
Monte Carlo models using modern physics libraries. Physics calculations
(projects) can easily be loaded and saved as external modules. This simplifies
the development of complicated calculations for high energy physics in large
collaborations.This desktop program is open-source licensed and is available on
the LINUX and Windows/Cygwin platforms.


title: Centauros and/or Chirons as evaporating mini black holes

abstract:
  It is argued that the signals expected from the evaporation of mini black
holes - predicted in TeV-scale gravity models with large extra dimensions and
possibly produced in ultra high energy collisions in the atmosphere - have
characteristics quite similar to the ones of the Centauro events, an old
mystery of cosmic ray physics.


title: Masses and weak decay rates of doubly heavy baryons

abstract:
  Mass spectra and semileptonic decay rates of doubly heavy baryons are studied
in the framework of the relativistic quark model in the quark-diquark
approximation.


title: H1 QCD analysis of inclusive cross section data

abstract:
  This contribution reviews the QCD analysis of the H1 inclusive DIS data.
Flavor separated parton densities are extracted in a NLO QCD fit using neutral
and charged current HERA I data. The results of a dedicated QCD analysis of the
gluon and $\alpha_s$ are also reviewed.


title: Nonrelativistic QED approach to the bound-electron g factor

abstract:
  Within a systematic approach based on nonrelativistic quantum electrodynamics
(NRQED), we derive the one-loop self-energy correction of order alpha
(Zalpha)^4 to the bound-electron g factor. In combination with numerical data,
this analytic result improves theoretical predictions for the self-energy
correction for carbon and oxygen by an order of magnitude. Basing on one-loop
calculations, we obtain the logarithmic two-loop contribution of order alpha^2
(Zalpha)^4 ln[(Zalpha)^-2] and the dominant part of the corresponding constant
term. The results obtained improve the accuracy of the theoretical predictions
for the 1S bound-electron g factor and influence the value of the electron mass
determined from g factor measurements.


title: Electromagnetic Form Factors of a Massive Neutrino

abstract:
  Electromagnetic form factors of a massive neutrino are studied in a minimally
extended standard model in an arbitrary $R_{\xi}$ gauge and taking into account
the dependence on the masses of all interacting particles. The contribution
from all Feynman diagrams to the charge, magnetic, and anapole form factors, in
which the dependence on the masses of all particles as well as on gauge
parameters is accounted for exactly, are obtained for the first time in
explicit form. The asymptotic behavior of the magnetic form factor for large
negative squares of the momentum of an external photon is analyzed and
expression for the anapole moment of a massive neutrino is derived. The results
are generalized to the case of mixing between various generations of the
neutrino. Explicit expressions are obtained for the charge, magnetic, and
electric dipole and anapole transition form factors as well as for the
transition electric dipole moment.


title:
Resummed one-loop gluonic contributions to the color superconducting
  color charge density vanish

abstract:
  It is shown that gluonic corrections to the tadpole diagrams vanish in the
2SC and CFL phases at the order where one might have expected NLO corrections.
This implies that the gluonic part of the color charge density is negligible at
the order of our computation. This statement remains true after inclusion of
the gluon vertex correction and contributions from Nambu-Goldstone bosons.


title: Direct CP Violation in B decays with rho0-omega Mixing

abstract:
  A complete study of the process B to pi+ pi- V(V=1--) is performed both in
the framework of the helicity formalism and the effective lagrangian approach.
Emphasis is put on the factorization hypothesis and the importance of the rho0-
omega mixing in enhancing the direct CP violation. New results involving some
branching ratios and the ratio of the Penguin/Tree amplitude are given in
details.


title: Instanton-Induced Correlations in Hadrons

abstract:
  QCD instantons generate non-perturbative spin- and flavor- dependent forces
between quarks. We review the results of a series of studies on
instanton-induced correlations in hadrons. We first present some evidence for
instanton-mediated interactions in QCD, based on lattice simulations. Then we
show that the Instanton Liquid Model can reproduce the available data on proton
and pion form factors at large momentum transfer and explain the delay of the
onset of the perturbative regime in several hard reactions. We also show that
instantons generate a deeply bound scalar color anti-triplet diquark, with a
mass of about 450 MeV and size comparable with that of the proton. The strong
attraction in the anti-triplet scalar diquark channel leads to a quantitative
description of non-leptonic weak decays of hyperons and provides a microscopic
dynamical explanation of the Delta I=1/2 rule.


title: The Classical Stability Of The Ghost Condensate

abstract:
  We discuss classical stability of the cosmological mechanism which is
responsible for the ghost condensation. We show that the simplest general
covariant effective action which includes two covariant derivatives may lead to
an overshoot of the condensation point into the regime, where the model becomes
classically unstable. The model exhibits this behaviour for the de Sitter and
matter dominated universes when the initial values taken to be in the region of
validity of the low-energy effective theory. In the matter dominated case there
is a finite time (which can be large enough to exceed the present age of the
Universe) during which the model remains in the stable region. In inflationary
regime the system does not experience an overshoot only if the Hubble parameter
is larger than the characteristic energy scale of the effective field theory
(EFT). This latter regime is, however, inconsistent with the EFT description at
the condensation point. We discuss the limitations of the use of the truncated
action and point out how one can avoid problems due to the overshoot in order
to have a viable ghost condensation mechanism.


title: Partly Supersymmetric Grand Unification

abstract:
  It is shown how grand unification can occur in models which are partly
supersymmetric. The particle states which are composite do not contribute to
the running of gauge couplings above the compositeness scale, while the
elementary states contribute the usual large logarithmns. This introduces a new
differential running contribution to the gauge couplings from partly composite
SU(5) matter multiplets. In particular, for partly supersymmetric models, the
incomplete SU(5) elementary matter multiplets restore gauge coupling
unification even though the usual elementary gaugino and Higgsino contributions
need not be present.


title:
The effects of non-universal extra dimensions on the \tau\to \mu
  \bar{\nu_i} \nu_i decay

abstract:
  We study \tau\to \mu \bar{\nu_i} \nu_i, i=e,\mu,\tau decays in the two Higgs
doublet model, with the inclusion of one and two spatial non-universal extra
dimensions. We observe that the branching ratio is sensitive to two extra
dimensions in contrary to a single extra dimension.


title: Decays of Non-strange Negative Parity Baryons in the 1/Nc Expansion

abstract:
  The decays of non-strange negative parity baryons via the emission of single
$\pi$ and $\eta$ mesons are analyzed in the framework of the $1/N_c$ expansion.
A basis of spin-flavor operators for the partial wave amplitudes is established
to order $1/N_c$ and the unknown effective coefficients are determined by
fitting to the S- and D-wave partial widths as provided by the Particle Data
Group. A set of relations between widths that result at the leading order, i.e.
order $N_c^0$, is given and tested with the available data. Up to a few
exceptions, a good description of the partial decays widths is already obtained
at that order. Because of the rather large errors in the empirical input data
the next to leading order fit fails to pin down with satisfactory accuracy the
subleading effective coefficients. The hierarchy expected from the $1/N_c$
expansion is reflected in the results.


title: May Heavy neutrinos solve underground and cosmic ray puzzles?

abstract:
  Primordial Heavy neutrinos of 4th generation might explain different
astrophysical puzzles: indeed the simplest 4th neutrino scenario may be still
consistent with known 4th neutrino physics, cosmic ray anti-matter and gamma
fluxes and signals in underground detectors for a very narrow neutrino mass
windows (46-47 GeV). We have analyzed extended Heavy neutrino models related to
the clumpiness of neutrino density, new interactions in Heavy neutrino
annihilation, neutrino asymmetry, neutrino decay. We found that in these models
the underground signals maybe better combined with the cosmic ray imprint
leading to a wider windows for neutrino mass (46-75 GeV) coinciding with the
whole range allowed from uncertainties of electro-weak parameters.


title: TeV-Scale String Resonances at Hadron Colliders

abstract:
  We construct tree-level four-particle open-string amplitudes relevant to
dilepton and diphoton production at hadron colliders. We expand the amplitudes
into string resonance (SR) contributions and compare the total cross-section
through the first SR with the $Z^{\prime}$ search at the Tevatron. We establish
a current lower bound based on the CDF Run I results on the string scale to be
about $1.1-2.1$ TeV, and it can be improved to about $1.5-3$ TeV with 2
fb$^{-1}$. At the LHC, we investigate the properties of signals induced by
string resonances in dilepton and diphoton processes. We demonstrate the unique
aspects of SR-induced signals distinguishable from other new physics, such as
the angular distributions and forward-backward asymmetry. A 95% C.L. lower
bound can be reached at the LHC for $M_S>8.2-10$ TeV with an integrated
luminosity of 300 fb$^{-1}$. We emphasize the generic features and profound
implications of the amplitude construction.


title: Study of Black Holes with the ATLAS detector at the LHC

abstract:
  We evaluate the potential of the ATLAS detector for discovering black holes
produced at the LHC, as predicted in models with large extra dimensions where
quantum gravity is at the TeV scale. We assume that black holes decay by
Hawking evaporation to all Standard Model particles democratically. We comment
on the possibility to estimate the Planck scale.


title: Higgs and Beyond Standard Model Searches at LEP

abstract:
  Extensive searches for Higgs bosons and other new phenomena predicted by
extensions of the Standard Model have been performed at LEP. A summary is given
reviewing the principal aspects and presenting a selection of results.


title: Vus from Kl3 Decays

abstract:
  Important progress made this year, both in theory and in experiment, helped
solving the problem of 2 sigma-deviation from the unitarity of the first row
elements in the CKM matrix. Today we have, |Vus|^2 + |Vud|^2 + |Vub|^2-1 =
-0.0008(13), -0.0010(13), or -0.0005(13), depending on whether the
q^2-dependence of the relevant Kl3 form factor is considered as pole-like,
linear or quadratic function, and on the Leutwyler-Roos value of
f+(0)=0.961(8), whose validity has recently been reinforced by lattice studies.
In this talk we summarize the recent developments.


title: On V_ud determination from neutron decay

abstract:
  The recent results of the PIBETA experiment strongly suggest the presence of
a non-(V-A) anomalous interaction in the radiative pion decay. The same
interaction should inevitably contribute to the neutron decay and in particular
it should affect the V_ud determination. This paper is dedicated to the
prediction of the eventual discrepancy in V_ud extracted from the super-allowed
Fermi transitions and from the polarized neutron decay.


title: An SO(10) GUT With See-Saw Masses For All Fermions

abstract:
  We propose an SO(10) grand unified theory which has the simplest Higgs
structure discussed so far in the literature. We include only two Higgs
scalars, a 210-plet and a 16-plet. In addition to the regular fermions we
include one singlet, whose mass term breaks chiral symmetry, so that fermions
can get masses. All fermions acquire see-saw masses, since there are no Higgs
bi-doublets. Required neutrino masses with large mixing as well as leptogenesis
are possible in this model.


title:
LSJK - a C++ library for arbitrary-precision numeric evaluation of the
  generalized log-sine functions

abstract:
  Generalized log-sine functions appear in higher order epsilon-expansion of
different Feynman diagrams. We present an algorithm for numerical evaluation of
these functions of real argument. This algorithm is implemented as C++ library
with arbitrary-precision arithmetics for integer 0 < k < 9 and j > 1. Some new
relations and representations for the generalized log-sine functions are given.

categories: hep-ph cs.MS cs.NA math-ph math.MP math.NA


title: Evolution of coupled classical fields

abstract:
  We study the evolution of the coupled scalar and fermion fields within the
classical field theory. We examine the case of N coupled fields in 1+3
dimensional space. The general expressions for the fields distributions are
obtained. The particular case of two fields in 1+1 dimensional space is
carefully studied. We obtain the expressions for the averaged fields
intensities and show that in the relativistic limit they are similar to the
usual transition probabilities formulae of neutrino oscillations.


title: Minimal SUGRA Model and Collider Signals

abstract:
  The SUSY signals in the dominant stau-neutralino coannihilation region at a
500(800) GeV linear collider are investigated. The region is consistent with
the WMAP measurement of the cold dark matter relic density as well as all other
current experimental bounds within the mSUGRA framework. The signals are
characterized by an existence of very low-energy tau leptons in the final state
due to small mass difference between stau_1 and chi_1 (5-15 GeV). We study the
accuracy of the mass difference measurement with a 1^deg active mask to reduce
a huge SM two-photon background.


title: Chiral Soliton Model vs Pentaquark Structure for \Theta (1540)

abstract:
  The exotic baryon $\Theta^+$ (1540 MeV)$ is visualised as an expected (iso)
rotational excitation in the Chiral Soliton Model. It is also argued as a
Pentaquark baryon state in a constituent quark model with strong diquark
correlations. I contrast the two points of view; the similarities and
differences between the two pictures. Collective excitation, characteristic of
Chiral Soliton Model points toward small mixing of representations in the wake
of SU(3) breaking. In contrast, Constituent quark Models prefer near ``ideal''
mixing, similar to $\omega - \phi$ mixing.


title: Parity of $\Theta^+$(1540) from QCD sum rules

abstract:
  The QCD sum rule for the pentaquark $\Theta^+$, first analyzed by Sugiyama,
Doi and Oka, is reanalyzed with a phenomenological side that explicitly
includes the contribution from the two-particle reducible kaon-nucleon
intermediate state. The magnitude for the overlap of the $\Theta^+$
interpolating current with the kaon-nucleon state is obtained by using
soft-kaon theorem and a separate sum rule for the ground state nucleon with the
pentaquark nucleon interpolating current. It is found that the K-N intermediate
state constitutes only 10% of the sum rule so that the original claim that the
parity of $\Theta^+$ is negative remains valid.


title: Final State Interactions in Hadronic D decays

abstract:
  We show that the large corrections due to final state interactions (FSI) in
the D^+\to \pi^-\pi^+\pi^+, D^+_s\to \pi^-\pi^+\pi^+, and D^+\to K^-\pi^+\pi^+
decays can be accounted for by invoking scattering amplitudes in agreement with
those derived from phase shifts studies. In this way, broad/overlapping
resonances in S-waves are properly treated and the phase motions of the
transition amplitudes are driven by the corresponding scattering matrix
elements determined in many other experiments. This is an important step
forward in resolving the puzzle of the FSI in these decays. We also discuss why
the \sigma and \kappa resonances, hardly visible in scattering experiments, are
much more prominent and clearly visible in these decays without destroying the
agreement with the experimental \pi\pi and K\pi low energy S-wave phase shifts.


title: The QCD equation of state near T_0 within a quasi-particle model

abstract:
  We present a description of the equation of state of strongly interacting
matter within a quasi-particle model. The model is adjusted to lattice QCD data
near the deconfinement temperature $T_c$. We compare in detail the excess
pressure at non-vanishing chemical potential and its expansion coefficients
with two-flavor lattice QCD calculations and outline prospects of the
extrapolation to large baryon density.


title:
Light scalars as tetraquarks or two-meson states from large Nc and
  unitarized Chiral Perturbation Theory

abstract:
  By means of unitarized Chiral Perturbation Theory it is possible to obtain a
remarkable description of meson-meson scattering amplitudes up to 1.2 GeV, and
generate poles associated to scalar and vector resonances. Since Chiral
Perturbation Theory is the QCD low energy effective theory, it is possible then
to study its large Nc limit where qqbar states are easily identified. The
vectors thus generated follow closely a qqbar behavior, whereas the light
scalar poles follow the large Nc behavior expected for a dominant tetraquark or
two-meson structure.


title: Comment on `Glueball spectrum from a potential model'

abstract:
  In a recent article, W.-S. Hou and G.-G. Wong [Phys. Rev. D {\bf 67}, 034003
(2003)] have investigated the spectrum of two-gluon glueballs below 3 GeV in a
potential model with a dynamical gluon mass. We point out that, among the 18
states calculated by the authors, only three are physical. The other states
either are spurious or possess a finite mass only due to an arbitrary
restriction of the variational parameter.


title:
Production of B(c) mesons via fragmentation in the kT-factorization
  approach

abstract:
  In the framework of the kT-factorization approach we have calculated in the
fragmentation model the pT-spectra of B(c) mesons at the energies of the
Tevatron and the LHC Colliders and at the large pT domain. We compare the
obtained results with the existing experimental data and with the predictions
obtained in the collinear parton model.


title: Scheme-invariant NNLO evolution for unpolarized DIS structure functions

abstract:
  We discuss the combination of NNLO standard QCD evolution and
scheme-invariant analysis for unpolarized DIS structure functions data as a
method to reduce the theoretical errors on the determination of
$\alpha_s(M_Z^2)$ to $\sim 1$% in order to match the accuracy forseen for
experimental errors from future high statistics measurements.


title:
The 16th Moment of the Non--Singlet Structure Functions $F_2(x,Q^2)$ and
  $F_L(x,Q^2)$ to $O(\alpha_s^3)$

abstract:
  We present the results of an analytic next--to--next--to leading order QCD
calculation of the non--singlet anomalous dimension $\gamma_{\rm NS}^+(N)$ and
the coefficient functions $C_{2,L}(N)$ associated to the deeply inelastic
structure functions $F_2(x,Q^2)$ and $F_L(x,Q^2)$ for the Mellin moment N=16.
Comparisons are made with results in the literature.


title: The Longitudinal Structure Function at the Third Order

abstract:
  We compute the complete third-order contributions to the coefficient
functions for the longitudinal structure function F_L, thus completing the
next-to-next-to-leading order (NNLO) description of unpolarized electromagnetic
deep-inelastic scattering in massless perturbative QCD. Our exact results agree
with determinations of low even-integer Mellin moments and of the leading
small-x terms in the flavour-singlet sector. In this letter we present compact
and accurate parametrizations of the results and illustrate the numerical
impact of the NNLO corrections.


title: Final-sate radiation in electron-positron annihilation into a pion pair

abstract:
  The process of $e^+e^-$ annihilation into a $\pi^+\pi^-$ pair with radiation
of a photon is considered. The amplitude of the reaction
$e^+e^-\to\pi^+\pi^-\gamma$ consists of the model independent initial-state
radiation (ISR) and model-dependent final-state radiation (FSR). The general
structure of the FSR tensor is constructed from Lorentz covariance, gauge
invariance and discrete symmetries in terms of the three invariant functions.
To calculate these functions we apply Chiral Perturbation Theory (ChPT) with
vector and axial-vector mesons. The contribution of $e^+e^-\to\pi^+\pi^-\gamma$
process to the muon anomalous magnetic moment is evaluated, and results are
compared with the dominant contribution in the framework of a hybrid model,
consisting of VMD and point-like scalar eletrodynamics. The developed approach
allows us also to calculate the $\pi^+\pi^-$ charge asymmetry.


title:
High-Precision Predictions for the MSSM Higgs Sector at O(alpha_b
  alpha_s)

abstract:
  We evaluate O(alpha_b alpha_s) corrections in the Higgs boson sector of the
CP-conserving MSSM, generalising the known result in the literature to
arbitrary values of tan beta. A detailed analysis of the renormalisation in the
bottom/scalar bottom sector is performed. Concerning the lightest MSSM Higgs
boson mass, we find relatively small corrections for positive mu, while for mu
< 0 the genuine two-loop O(alpha_b alpha_s) corrections can amount up to 3 GeV.
Different renormalisation schemes are applied and numerically compared. It is
demonstrated that some care has to be taken in choosing an appropriate
renormalisation prescription in order to avoid artificially large corrections.
The residual dependence on the renormalisation scale is investigated, and the
remaining theoretical uncertainties from unknown higher-order corrections in
this sector are discussed for different regions of the MSSM parameter space.


title: A Not So Little Higgs?

abstract:
  Most recent models assuming the Higgs Boson is a pseudo-Nambu-Goldstone Boson
(p NGb) are motivated by the indication from Standard Model fits that its mass
is < 200GeV.Starting from a modified SM of Forshaw et. al. with a triplet boson
added and a heavier Higgs Boson, we consider a pNGb model. This differs in
several wa ys from most little Higgs models: apart from using only one loop,
the cutoff sca le is reduced to 5 TeV, and consequently a linear sigma model is
used to allevia te FCNC effects; no new vector bosons are required, but
vector-like isosinglet f ermions are needed, but play no part in determining
the mass of the Higgs Boson. The phenomenology of the isosinglet pNGb that
arises from the SU(3)xSU(3)->SU(3) model we use is briefly discussed. Some
potential theoretical and phenomenolog ical problems arementioned briefly.


title: Neutrino Physics (theory)

abstract:
  Nonzero neutrino masses are the first definitive need to extend the standard
model. After reviewing the basic framework, I describe the status of some of
the major issues, including tests of the basic framework of neutrino masses and
mixings; the question of Majorana vs. Dirac; the spectrum, mixings, and number
of neutrinos; models, with special emphasis on constraints from typical
superstring constructions (which are not consistent with popular bottom-up
assumptions); and other implications.


title: A Remark on Neutrino Oscillations and Time-Energy Uncertainty Relation

abstract:
  Neutrino oscillations are discussed from the point of view of the time-energy
uncertainty relation.


title: Recent progress in the understanding of single spin asymmetries

abstract:
  Over the past years a lot of progress has been made in the understanding of
single spin asymmetries in hard scattering processes. We briefly review this
subject, covering the non-vanishing of time-reversal odd parton distributions,
universality of fragmentation functions, and the discovery of previously
unknown time-reversal odd parton distributions at subleading twist.
Interestingly enough, all these developments were initiated by simple model
calculations.


title: Low scale inflation and the curvaton mechanism

abstract:
  The primordial curvature perturbation may be due to a `curvaton' field, which
dominates (or almost dominates) the energy density before it decays. In the
simplest version of the curvaton model the scale of inflation has to be quite
high corresponding to a Hubble parameter H>10^7 GeV. We here explore two
modifications of the curvaton model which can instead allow inflation at a low
scale. (i) The curvaton is a Pseudo Nambu-Goldstone Boson (PNGB), with a
symmetry-breaking phase transition during inflation. (ii) The curvaton mass
increases suddenly at some moment after the end of inflation but before the
onset of the curvaton oscillations. Both proposals can work but not in a
completely natural way. Also, the lower bound on the scale of inflation depends
somewhat on the details of the framework used. Nevertheless, we show that
inflation with H as low as 1 TeV or lower is possible to be attained.


title: Low scale inflation and the immediate heavy curvaton decay

abstract:
  The end of a thermal inflation era, driven by the rolling of a flaton field
coupled to the curvaton, cause a huge increment in the curvaton mass and decay
rate while the curvaton is still frozen. It is shown that, if this increment is
enough for the curvaton to immediately decay, low scale inflation with Hubble
parameter H_\ast \sim 10^3 GeV is achieved for more natural values of the
flaton-curvaton coupling constant \lambda (10^{-10} \lsim \lambda \lsim
10^{-4}) and the curvaton bare mass m_\sigma (m_\sigma \lsim 1 GeV).


title:
Balitsky's hierarchy from Mueller's dipole model and more about target
  correlations

abstract:
  High energy scattering is considered within the framework of the QCD dipole
model formulated as a classical branching process. Starting from Mueller's
generating functional we derive the high energy evolution law for the
scattering amplitude. The amplitude's evolution is given by an infinite
hierarchy of linear equations equivalent to Balitsky's chain reduced to dipole
operators. This new derivation of the hierarchy is the central result of the
paper. We comment about target correlations which prevent the hierarchy from
being expressed as a closed form Balitsky-Kovchegov equation.


title: An Alternative Interpretation of X(3872)

abstract:
  It is proposed that X(3872) is a vector glueball mixed with neighboring
vector states of charmonium.


title: Exclusive Decuplet-Baryon Pair Production in Two-Photon Collisions

abstract:
  This work extends our previous studies of two-photon annihilation into
baryon-antibaryon pairs from spin-1/2 octet to spin-3/2 decuplet baryons. Our
approach is based on perturbative QCD and treats baryons as quark-diquark
systems. Using the same model parameters as in our previous work, supplemented
by QCD sum-rule results for decuplet baryon wave functions, we are able to give
absolute predictions for decuplet baryon cross sections without introducing new
parameters. We find that the $\Delta^{++}$ cross section is of the same order
of magnitude as the proton cross section, well within experimental bounds.


title:
Factorization in color-suppressed B -> D(*)0 pi0 decays from the
  soft-collinear effective theory

abstract:
  The soft-collinear effective theory has been recently applied to prove novel
factorization theorems for many B decays. We describe here in some detail the
factorization relation for color-supressed nonleptonic B -> D(*)0 pi0 decays
and update the phenomenological analysis of these decays.


title: Some Phenomenology of Intersecting D-Brane Models

abstract:
  We present some phenomenology of a new class of intersecting D-brane models.
Soft SUSY breaking terms for these models are calculated in the u - moduli
dominant SUSY breaking approach (in type IIA). In this case, the dependence of
the soft terms on the Yukawas and Wilson lines drops out. These soft terms have
a different pattern compared to the usual heterotic string models.
Phenomenological implications for dark matter are discussed.


title: Recent results from lattice calculations

abstract:
  Recent results from lattice QCD calculations relevant to particle physics
phenomenology are reviewed. They include the calculations of strong coupling
constant, quark masses, kaon matrix elements, and D and B meson matrix
elements. Special emphasis is on the recent progress in the simulations
including dynamical quarks.


title: Supersymmetry at the LHC and Beyond --Ultimate Targets--

abstract:
  At the LHC, superpartners with the masses lighter than a few TeV may be
found, and the masses of the supersymmetric (SUSY) particles and their
interactions will be studied. The information would be the base to consider the
SUSY breaking mechanism and cosmology related to the SUSY dark matter. We
review the recent studies that aims for the ``precise SUSY study'' at the LHC.


title: Chiral symmetry breaking and stability of strangelets

abstract:
  We discuss the stability of strangelets by considering dynamical chiral
symmetry breaking and confinement. We use a $U(3)_{L} \times U(3)_{R}$
symmetric Nambu--Jona-Lasinio model for chiral symmetry breaking supplemented
by a boundary condition for confinement. It is shown that strangelets with
baryon number $A < 2 \times 10^{3}$ can stably exist. For the observables, we
obtain the masses and the charge-to-baryon number ratios of the strangelets.
These quantities are compared with the observed data of the exotic particles.


title:
Charge Breaking Minima in the Broken R-parity Minimal Supersymmetric
  Standard Model

abstract:
  We reconsider the possible presence of charge and colour breaking minima in
the scalar potential of the minimal supersymmetric standard model (MSSM) and
its minimal generalization with R-parity explicitly broken by bilinear terms
(RMSSM). First we generalize some results previously derived for the MSSM case.
Next we investigate how robust is the MSSM against its RMSSM extension. We
examine the constraints on the RMSSM parameter space that follow from the
required absence of charge breaking minima in the scalar potential. We point
out the possibility of generating non--zero vacuum expectation values for the
charged Higgs field which is not present in the MSSM. However, given the
smallness of neutrino masses indicated by neutrino oscillation data, we show
that the RMSSM represents only a slight perturbation of the MSSM and is thus as
safe (or unsafe) as the MSSM itself from unwanted minima in the scalar
potential.


title: Numerical investigation of friction in inflaton equations of motion

abstract:
  The equation of motion for the expectation value of a scalar quantum field
does not have the local form that is commonly assumed in studies of
inflationary cosmology. We have recently argued that the true, temporally
non-local equation of motion does not possess a time-derivative expansion and
that the conversion of inflaton energy into particles is not, in principle,
described by the friction term estimated from linear response theory. Here, we
use numerical methods to investigate whether this obstacle to deriving a local
equation of motion is purely formal, or of some quantitative importance. Using
a simple scalar-field model, we find that, although the non-equilibrium
evolution can exhibit significant damping, this damping is not well described
by the local equation of motion obtained from linear response theory. It is
possible that linear response theory does not apply to the situation we study
only because thermalization turns out to be slow, but we argue that that the
large discrepancies we observe indicate a failure of the local approximation at
a more fundamental level.


title: Physics of Neutrino Mass

abstract:
  Recent discoveries in the field of neutrino oscillations have provided a
unique window into physics beyond the standard model. In this lecture, I
summarize how well we understand the various observations, what they tell us
about the nature of new physics and what we are likely to learn as some of the
planned experiments are carried out.


title: Strong CP, Flavor, and Twisted Split Fermions

abstract:
  We present a natural solution to the strong CP problem in the context of
split fermions. By assuming CP is spontaneously broken in the bulk, a weak CKM
phase is created in the standard model due to a twisting in flavor space of the
bulk fermion wavefunctions. But the strong CP phase remains zero, being
essentially protected by parity in the bulk and CP on the branes. As always in
models of spontaneous CP breaking, radiative corrections to theta bar from the
standard model are tiny, but even higher dimension operators are not that
dangerous. The twisting phenomenon was recently shown to be generic, and not to
interfere with the way that split fermions naturally weaves small numbers into
the standard model. It follows that out approach to strong CP is compatible
with flavor, and we sketch a comprehensive model. We also look at deconstructed
version of this setup which provides a viable 4D model of spontaneous CP
breaking which is not in the Nelson-Barr class.


title: Dark Matter from Baryon Asymmetry

abstract:
  The measured densities of dark and baryonic matter are surprisingly close to
each other, even though the baryon asymmetry and the dark matter are usually
explained by unrelated mechanisms. We consider a scenario where the dark matter
S is produced non-thermally from the decay of a messenger particle X, which
carries the baryon number and compensates for the baryon asymmetry in the
Universe, thereby establishing a connection between the baryonic and dark
matter densities. We propose a simple model to realize this scenario, adding
only a light singlet fermion S and a colored particle X which has a mass in the
O(TeV) range and a lifetime to appear long-lived in collider detector.
Therefore in hadron colliders the signal is similar to that of a stable or
long-lived gluino in supersymmetric models.


title:
An Analytic Approach to the Wave Packet Formalism in Oscillation
  Phenomena

abstract:
  We introduce an approximation scheme to perform an analytic study of the
oscillation phenomena in a pedagogical and comprehensive way. By using Gaussian
wave packets, we show that the oscillation is bounded by a time-dependent
vanishing function which characterizes the slippage between the mass-eigenstate
wave packets. We also demonstrate that the wave packet spreading represents a
secondary effect which plays a significant role only in the non-relativistic
limit. In our analysis, we note the presence of a new time-dependent phase and
calculate how this additional term modifies the oscillating character of the
flavor conversion formula. Finally, by considering Box and Sine wave packets we
study how the choice of different functions to describe the particle
localization changes the oscillation probability.


title: On the Sign of $\Delta M_B$, $M_{12}$, sin$2\phi_1$ and all that

abstract:
  We are withdrawing our paper hep-ph/0411135 since its main conclusion is
wrong as we have learnt with the assistance of Bob Cahn and Jerome Charles. The
sign of $\Delta M_B$ does not matter in interpreting the CP asymmetry in $B_d
\to \psi K_S$, as we could have seen from our very own Eq.(13). We know now how
to derive the correct result of Grossman, Kayser and Nir also using our phase
convention. Nostra culpa! As Bob Cahn told us we should have had more
confidence in our own book.


title: On a possible tetraquark cousin of the Theta^+

abstract:
  If a narrow Theta^+ pentaquark exists, it is likely that a ud\bar s-ud
triquark-diquark configuration is a significant component of its wave function.
If so, the mechanism responsible for the binding of a triquark and a diquark is
also likely to bind the triquark to an \bar s antiquark. We discuss the
expected properties of such a ud\bar s-\bar s tetraquark meson. In particular,
we point out that for a 0^+ isoscalar ud\bar s\bar s meson the lowest allowed
decay mode is a four-body K K pi pi channel with a small phase space and a
distinctive experimental signature.


title: Neutrino Models of Dark Energy

abstract:
  I consider a scenario proposed by Fardon, Nelson and Weiner where dark energy
and neutrinos are connected. As a result, neutrino masses are not constant but
depend on the neutrino number density. By examining the full equation of state
for the dark sector, I show that in this scenario the dark energy is equivalent
to having a cosmological constant, but one that "runs" as the neutrino mass
changes with temperature. Two examples are examined that illustrate the
principal feautures of the dark sector of this scenario. In particular, the
cosmological constant is seen to be negligible for most of the evolution of the
Universe, becoming inportant only when neutrinos become non-relativistic. Some
speculations on features of this scenario which might be present in a more
realistic theory are also presented.


title:
`Per Aspera Ad Astra' -- A Short Essay on the Long Quest for CP
  Violation

abstract:
  After briefly explaining the special role played by violations of CP and T
invariance and their connection with the baryon number of the Universe, I
sketch the history of CP violation studies since its totally unexpected
discovery in 1964. For about 30 years CP violation could be described by a
single number; this has changed dramatically in the years around the turn of
the millenium: (i) The existence of {\em direct} CP violation was unequivocally
established in the decays of long lived kaons. (ii) For the first time CP
violation was observed in a system other than that of neutral kaons, namely in
$B\to \psi K_S$. The findings are in impressive agreement with the prediction
of the CKM ansatz, which thus has been promoted to the status of a tested
theory. These new insights were made possible by close feedback between theory
and experiment as well as advances in detector design and a novel machine
concept, namely that of an asymmetric collider. We also have direct {\em
experimental} evidence that the observed CP violation in $K_L$ and B decays is
matched by a violation of microscopic time reversal violation, as required by
CPT symmetry. More recently CP violation has been observed also in $B\to
\pi^+\pi^-$ and $B\to K^{\mp}\pi^{\pm}$. A few comments are added on subtle
aspects of direct CP violation. While we know that the CKM dynamics are
irrelevant for generating the baryon number of the Universe -- i.e. hitherto
unknown forces have to be driving it -- we have also learnt that such `New
Physics' is likely to contain CP violation of sufficient strength.


title:
A variety of lepton number violating processes related to Majorana
  neutrino masses

abstract:
  A Majorana type of the neutrino mass matrix induces a class of lepton number
violating processes. Cross sections of these reactions are given in terms of
the neutrino mass matrix element, and a semi-realistic event rate is estimated.
These processes provide mass and mixing parameters not directly accessible by
the neutrino oscillation experiments. If these processes are discovered with a
larger rate than given here, it would imply a new physics of the lepton number
violation not directly related to the Majorana neutrino mass, such as R-parity
violating operators in SUSY models.


title: The Possible $J^{PC}I^G=2^{++}2^+$ State X(1600)

abstract:
  The interesting state X(1600) with $J^{PC}I^G=2^{++}2^+$ can't be a
conventional $q \bar q$ meson in the quark model. Using a mixed interpolating
current with different color configurations, we investigate the possible
existence of X(1600) in the framework of QCD finite energy sum rules. Our
results indicate that both the "hidden color" and coupled channel effects may
be quite important in the multiquark system. We propose several reactions to
look for this state.


title: Mesonic states in the generalised Nambu-Jona-Lasinio theories

abstract:
  For any Nambu-Jona-Lasinio model of QCD with arbitrary nonlocal,
instantaneous, quark current-current confining kernels, we use a generalised
Bogoliubov technique to go beyond BCS level (in the large-Nc limit) so as to
explicitly build quark-antiquark compound operators for creating/annihilating
mesons. In the Hamiltonian approach, the mesonic bound-state equations appear
(from the generalised Bogoliubov transformation) as mass-gap-like equations
which, in turn, ensure the absence, in the Hamiltonian, of mesonic Bogoliubov
anomalous terms. We go further to demonstrate the one-to-one correspondence
between Hamiltonian and Bethe-Salpeter approaches to non-local NJL-type models
for QCD and give the corresponding "dictionary" necessary to "translate" the
amplitudes built using the graphical Feynman rules to the terms of the
Hamiltonian, and vice versa. We comment on the problem of multiple vacua
existence in such type of models and argue that mesonic states in the theory
should be prescribed to have an extra index - the index of the replica in which
they are created. Then the completely diagonalised Hamiltonian should contain a
sum over this new index. The method is proved to be general and valid for any
instantaneous quark kernel.


title: Decay constants of the pseudoscalar charmonium and bottomonium

abstract:
  In this article, we investigate the structures of the pseudoscalar charmonium
and bottomonium in the framework of the coupled rainbow Schwinger-Dyson
equation and ladder Bethe-Salpeter equation with the confining effective
potential (infrared modified flat bottom potential).
  As the current masses are very large, the dressing or renormalization for the
$c$ and $b$ quarks are tender, however, mass poles in the timelike region are
absent. The Euclidean time fourier transformed quark propagator has no mass
poles in the timelike region which naturally implements confinement. The
Bethe-Salpeter wavefunctions for those mesons have the same type (Gaussian
type) momentum dependence and center around zero momentum with spatial
extension to about $q^2=1GeV^2$ which happen to be the energy scale for Chiral
symmetry breaking, the strong interactions in the infrared region result in
bound states. The decay constants for those pseudoscalar heavy quarkonia are
compatible with the values of experimental extractions and theoretical
calculations.


title:
Realizations of Hybrid Inflation in Supergravity with natural initial
  conditions

abstract:
  We present viable F-term realizations of the hybrid inflationary scenario in
the context of supergravity addressing at the same time the well-known problems
of the initial conditions and of the adequate suppression of the inflaton mass.
An essential role in our construction is played by "decoupled" superheavy
fields without superpotential acquiring large vevs due to D-terms associated
with "anomalous" U(1) gauge symmetries. The naturalness of the initial
conditions is achieved through a "chaotic" inflation starting at energies close
to the Planck scale and driven by the "anomalous" D-terms. We discuss two
distinct mechanisms leading to such an early "chaotic" D-term inflation which
depend on the choice of the K\"ahler potential involving the superheavy fields.
The one relies on a choice of the K\"ahler potential of the $SU(1,1)/U(1)$
K\"ahler manifold of the type encountered in no-scale supergravity whereas the
other employs a more "conventional" choice for the K\"ahler potential of the
$SU(1,1)/U(1)$ or $SU(2)/U(1)$ K\"ahler manifold but invokes rather specific
valuesof the Fayet-Iliopoulos $\xi$ term.


title:
Determining the regimes of cold and warm inflation in the susy hybrid
  model

abstract:
  The SUSY hybrid inflation model is found to dissipate radiation during the
inflationary period. Analysis is made of parameter regimes in which these
dissipative effects are significant. The scalar spectral index, its running,
and the tensor-scalar ratio are computed in the entire parameter range of the
model. A clear prediction for strong dissipative warm inflation is found for
n_S-1 \simeq 0.98 and a low tensor-scalar ratio much below 10^{-6}. The strong
dissipative warm inflation regime also is found to have no \eta-problem and
with the field amplitude much below the Planck scale. As will be discussed,
this has important theoretical implications in permitting a much wider variety
of SUGRA extensions to the basic model.


title: Heavy-light mesons in QCD

abstract:
  This talk summarizes the study of the dynamics of the heavy-light \bar Qq
open charm and beauty mesons obtained in [1] using QCD spectral sum rules
(QSSR) and motivated by the recent experimental discovery of the D{sJ}(2317)
and D{sJ}(2457) mesons. The important r\^ole of the chiral condensate
<\bar\psi\psi> in the mass-splittings between the scalar-pseudoscalar mesons is
emphasized. The emerging value of the running charm quark mass for reproducing
the well-known D(0-) and Ds(0-) masses is: mc(mc)=1.13^{+0.08}_{-0.04} GeV,
which confirms previous estimates from this channel [2]. Using this value, the
sum rules give: M{Ds(0+)}= (2297+- 113) MeV, and a small SU(3) breaking:
M{Ds{(0+)}}-M{D{(0+)}}= 25 MeV. Extending the analysis to the B-system, we find
M{B(0+)}- M{B(0-)}= (422+- 196) MeV = M{Ds(0^+)}-M{Ds(0^-)}. Assuming an
approximate (heavy and light) flavour and spin symmetries of the
mass-splittings as indicated by the previous results, one also deduces
M{D*s(1+)}= (2440+- 113) MeV. Finally, one also gets: f{D(0+)}= (217+- 25) MeV
much bigger than f\pi=130.6 MeV, suggesting a large violation of the
1/sqrt{M_D} scaling, while the size of the SU(3) breaking ratio
f{Ds(0+)}/f{D(0+)}= 0.93+- 0.02 is opposite to the one of the 0^- channel of
about 1.14.


title: Polarizations in B -> VV decays

abstract:
  We demonstrate that the polarization fractions of most tree-dominated $B\to
VV$ decays can be simply understood by means of kinematics in the heavy-quark
or large-energy limit. For example, the longitudinal polarization fractions
$R_L$ of the $B^0\to (D_s^{*+}, D^{*+}, \rho^+)D^{*-}$ and $B^+\to (D_s^{*+},
D^{*+}, \rho^+)\rho^0$ modes increase as the masses of the mesons $D_s^{*+},
D^{*+}, \rho^+$ emitted from the weak vertex decrease. The subleading
finite-mass or finite-energy corrections modify these simple estimates only
slightly. Our predictions for the $B\to D_{(s)}^* D^*$ polarization fractions
derived in the perturbative QCD framework, especially $R_L\sim 1$ for $B^0\to
{\bar D}^{*0} D^{*0}$ governed by nonfactorizable $W$-exchange amplitudes, can
be confronted with future data. For penguin-dominated modes, such as
$B\to\rho(\omega) K^*$, the polarization fractions can be understood by the
annihilation effect from the $(S-P)(S+P)$ operators, plus the interference with
a small tree amplitude. At last, we comment on the various mechanism proposed
in the literature to explain the abnormal $B\to \phi K^*$ polarization data,
none of which are satisfactory.


title: QCD studies with ATLAS at the LHC

abstract:
  The study of QCD processes at the LHC will serve two main goals. First, the
predictions of Quantum Chromodynamics will be tested and precision measurements
will be performed, allowing additional constraints to be established, and
providing measurements of the strong coupling constant. Second, QCD processes
represent a major part of the background to other Standard Model processes and
signals of new physics at the LHC and therefore need to be understood in depth.
An overview of various measurements of QCD-related processes to be performed at
the LHC is presented, based on final states containing high-pT leptons, photons
and jets. Moreover, possible deviations from QCD predictions indicating
presence of new physics are discussed.


title:
Does the neutrino magnetic moment have an impact on solar neutrino
  physics?

abstract:
  Solar neutrino observations coupled with the recent KamLAND data suggest that
spin-flavor precession scenario does not play a major role in neutrino
propagation in the solar matter. We provide approximate analytical formulas and
numerical results to estimate the contribution of the spin-flavor precession,
if any, to the electron neutrino survival probability when the magnetic moment
and magnetic field combination is small.


title: QED Tests of Lorentz Symmetry

abstract:
  A status report is given of some recent theoretical and experimental
investigations looking for signals of Lorentz violation in QED. Experiments
with light, charged particles, and atoms have exceptional sensitivity to small
shifts in energy caused by Lorentz violation, including effects that could
originate from new physics at the Planck scale.


title:
Two photon decay of neutral scalars below 1.5 GeV in a chiral model for
  bar{q}q and bar{q}bar{q}qq states

abstract:
  We study the two photon decay of neutral scalars below 1.5 GeV in the context
of a recently proposed chiral model for bar{q}q and bar{q}bar{q}qq states. We
find good agreement with experimental results for the a_{0}(980)->gamma gamma.
Our calculations for f_{0}(980)->gamma gamma shows that further work is
necessary in order to understand the structure of this meson. The model
predicts Gamma(a_{0}(1450)->gamma gamma)=0.16+/-0.10KeV, Gamma(sigma->gamma
gamma)=0.47+/-0.66 KeV, Gamma(f(1370)->gamma gamma)=0.07+/-0.15 KeV,
Gamma(f(1500)->gamma gamma)=0.74+/-0.78 KeV.


title:
Supersymmetric contributions to the CP asymmetry of the B --> phi K and
  B --> eta' K

abstract:
  We analyse the CP asymmetry of the B --> phi K and B --> eta' K processes in
general supersymmetric models. We consider both gluino and chargino exchanges
in a model independent way by using the mass insertion approximation method. We
adopt the QCD factorization method for evaluating the corresponding hadronic
matrix elements. We show that chromomagnetic type of operator may play an
important role in accounting for the deviation of the mixing CP asymmetry
between B --> phi K and B --> J/psi K processes observed by Belle and BaBar
experiments. We also show that due to the different parity in the final states
of these processes, their supersymmetric contributions from the R-sector have
an opposite sign, which naturally explain the large deviation between their
asymmetries.


title: A note on the rare decay of a Higgs boson into photons and a $Z$ boson

abstract:
  We have calculated the width of the rare decay $H\to\gamma\gamma Z$ at
one-loop level in the standard model for Higgs boson masses in the range $115
{\rm GeV} \leq m_H \leq 160 {\rm GeV}$ . For this range of Higgs boson masses
we find that $Z$ boson is predominantly longitudinally polarized, and the
photons have the same helicity. A comparison of the decay width $\Gamma(H\to
\gamma\gamma Z)$ to those of $H\to\gamma\gamma$ and $H\to\gamma Z$ shows that,
for the Higgs boson mass of $m_H \sim 135 \rm{GeV}$, the ratios of the decay
widths are $\Gamma(H\to\gamma\gamma Z) / \Gamma(H\to\gamma\gamma) \sim
\Gamma(H\to\gamma\gamma Z) / \Gamma(H\to\gamma Z) \sim 10^{-5}-10^{-6}$.


title: Dirac Spinors and Flavor Oscillations

abstract:
  In the standard treatment of particle oscillations the mass eigenstates are
implicitly assumed to be scalars and, consequently, the spinorial form of
neutrino wave functions is not included in the calculations. To analyze this
additional effect, we discuss the oscillation probability formula obtained by
using the Dirac equation as evolution equation for the neutrino mass
eigenstates. The initial localization of the spinor state also implies an
interference between positive and negative energy components of mass eigenstate
wave packets which modifies the standard oscillation probability.


title: Summary of Model Predictions for $U_{e3}$

abstract:
  We present a short discussion on the expected magnitude of $|U_{e3}|$ in the
context of various scenarios proposed to describe neutrino masses and mixing.
Generic expectation is relatively large ($>0.05$) values for $\ue3$ which occur
in many well-motivated theoretical scenarios and models.


title:
Testing the nature of the $\Lambda (1520)$ resonance through
  photoproduction

abstract:
  Recent studies within the framework of chiral unitary theory produce the
$\Lambda (1520)$ resonance, among several others, as a dynamically generated
resonance from the interaction of the baryon decuplet and the meson octet. The
$\Lambda (1520)$ qualifies as a quasibound state of $\pi \Sigma(1385)$ and this
has repercussion in some observable quantities. In the present work we show
that the $\gamma p\to K^+K^-p$ reaction has a sizeable cross section for
invariant $K^-p$ masses above the $\Lambda(1520)$ mass. On the other hand, we
also find that the $\gamma p\to K^+\pi\Sigma(1385)$ reaction has a sizeable
cross section in that energy region as a consequence of the strong coupling of
the $\Lambda (1520)$ to $\pi\Sigma(1385)$, and then we make predictions for the
ratio of this cross section to that of the $\gamma p\to K^+ K^-p $ reaction.


title: The 1P quarkonium fine splittings at NLO

abstract:
  We calculate the 1P heavy quarkonium fine splittings at NLO and discuss the
impact of the calculation on the chi_b(1P) splittings.


title: Dynamical Symmetry Breaking on a Cylinder in Magnetic Field

abstract:
  We study dynamical symmetry breaking on a cylinder in external magnetic field
parallel to the axis of cylinder when magnetic field affects the dynamics of
fermions only through the Aharonov-Bohm phase. We find that unlike other
previously studied cases magnetic field in our case counteracts the generation
of dynamical fermion mass which decreases with magnetic field. There exists
also a purely kinematical contribution to the fermion gap which grows linearly
with magnetic field. Remarkably, we find that the total fermion gap, which
includes both the dynamical and kinematical contributions, always increases
with magnetic field irrespectively the values of coupling constant and the
radius of cylinder. Thus, although the dynamical mass is suppressed, external
magnetic field does enhance the total fermion gap in the spectrum.


title:
Relating Leptogenesis to Low Energy Flavor Violating Observables in
  Models with Spontaneous CP Violation

abstract:
  In the minimal left-right symmetric model, there are only two intrinsic CP
violating phases to account for all CP violation in both the quark and lepton
sectors, if CP is broken spontaneously by the complex phases in the VEV's of
the scalar fields. In addition, the left- and right-handed Majorana mass terms
for the neutrinos are proportional to each other due to the parity in the
model. This is thus a very constrained framework, making the existence of
correlations among the CP violation in leptogenesis, neutrino oscillation and
neutrinoless double beta decay possible. In these models, CP violation in the
leptonic sector and CP violation in the quark sector are also related. We find,
however, that such connection is rather weak due to the large hierarchy in the
bi-doublet VEV required by a realistic quark sector.


title:
The Linear Collider Physics Case: International Response to the
  Technology Independent Questions Posed by the International Technology
  Recommendation Panel

abstract:
  The International Technology Recommendation Panel distributed a list of
questions to each major laboratory. Question 30, part b and d, were technology
independent and related to the physics goals of the Linear Collider. An
international panel, with representation from Asia, Europe, and the Americas,
was formed by the World Wide Study during LCWS04 to formulate a response. This
is given below and constitutes the response of the world-wide Linear Collider
community.


title: Pentaquark implications for exotic mesons

abstract:
  If the exotic baryon $\Theta^+(1540)$ is a correlated $udud\bar{s}$ with $J^P
= {1/2}^+$, then there should exist an exotic meson, $J^P = 1^-$ $\vartheta^+
(S=+2)$ $\to K^+K^0$ $\sim 1.6$GeV with width $O(10-100)$MeV. The
$\pi_1(1400;1600)$ may be broad members of {\bf 10} $\pm$ \10bar in such a
picture. Vector mesons in the 1.4 - 1.7GeV mass range are also compared with
this picture.


title: Higher Order Stability of a Radiatively Induced 220 GeV Higgs Mass

abstract:
  The effective potential for radiatively broken electroweak symmetry in the
single Higgs doublet Standard Model is explored to four sequentially subleading
logarithm-summation levels (5-loops) in the dominant Higgs self-interaction
couplant $\lambda$. We augment these results with all contributing leading
logarithms in the remaining large but sub-dominant Standard Model couplants
(t-quark, QCD and $SU(2)\otimes U(1)$ gauge couplants) as well as next to
leading logarithm contributions from the largest of these, the t-quark and QCD
couplants. Order-by-order stability is demonstrated for earlier leading
logarithm predictions of an order 220 GeV Higgs boson mass in conjunction with
fivefold enhancement of the value for $\lambda$ over that anticipated from
conventional spontaneous symmetry breaking.


title:
Amplification of Quantum Meson Modes in the Late Time of Chiral Phase
  Transition

abstract:
  It is shown that there exists a possibility of amplification of amplitudes of
quantum pion modes with low momenta in the late time of chiral phase transition
by using the Gaussian wave functional approximation in the O(4) linear sigma
model. It is also shown that the amplification occurs in the mechanism of the
resonance by forced oscillation as well as the parametric resonance induced by
the small oscillation of the chiral condensate. These mechanisms are
investigated in both the case of spatially homogeneous system and the spatially
expanded system described by the Bjorken coordinate.


title:
Can Radiogenic Heat Sources Inside the Earth be located by their
  Antineutrino incoming Directions?

abstract:
  Antineutrinos born in the U and Th decay chains inside the Earth
(``Geoneutrinos'') carry out information on the amount and distribution of
radiogenic heat sources, which is of fundamental importance for geophysics.
Models of the Earth distribute U and Th masses mainly between the continental
crust and the lower mantle. It has been much discussed recently that a number
of detectors stationed at appropriate geographical sites can separate the crust
and mantle contributions. In present work we analyze directional separation of
antineutrino signals arriving from the crust and the lower mantle with only one
detector. We find that with a ~30-kton liquid scintillation antineutrino
spectrometer using $\bar{{\nu}_e}+p \to n + e^{+}$ detection reaction and
positron and neutron coordinates reconstruction techniques the U and Th
distribution model can roughly be tested. We also consider detector calibration
using ~1 MCi commercially available Sr90-Y90 beta source which emits
antineutrinos (Emax = 2.28 MeV) in the geoneutrino energy range.


title: Chaotic dynamics in preheating after inflation

abstract:
  We study chaotic dynamics in preheating after inflation in which an inflaton
$\phi$ is coupled to another scalar field $\chi$ through an interaction
$(1/2)g^2\phi^2\chi^2$. We first estimate the size of the quasi-homogeneous
field $\chi$ at the beginning of reheating for large-field inflaton potentials
$V(\phi)=V_0\phi^n$ by evaluating the amplitude of the $\chi$ fluctuations on
scales larger than the Hubble radius at the end of inflation. Parametric
excitations of the field $\chi$ during preheating can give rise to chaos
between two dynamical scalar fields. For the quartic potential ($n=4$,
$V_0=\lambda/4$) chaos actually occurs for $g^2/\lambda <{\cal O}(10)$ in a
linear regime before which the backreaction of created particles becomes
important. This analysis is supported by several different criteria for the
existence of chaos. For the quadratic potential ($n=2$) the signature of chaos
is not found by the time at which the backreaction begins to work, similar to
the case of the quartic potential with $g^2/\lambda \gg 1$.


title: tanbeta enhanced contributions to b--> s gamma in SUSY without R-parity

abstract:
  We present a systematic analysis of the decay b --> s gamma at the leading
log within the framework of Supersymmetry without R-parity. We point out some
new contributions in the form of bilinear-trilinear combination of R-parity
violating (RPV) couplings that are enhanced by large tanbeta. We also improve
by a few orders of magnitude, bounds on several combinations of RPV parameters.


title:
R2D2 - a symmetric measurement of reactor neutrinos free of systematical
  errors

abstract:
  We discuss a symmetric setup for a reactor neutrino oscillation experiment
consisting of two reactors separated by about 1 km, and two symmetrically
placed detectors, one close to each reactor. We show that such a configuration
allows a determination of $\sin^22\theta_{13}$ which is essentially free of
systematical errors, if it is possible to separate the contributions of the two
reactors in each detector sufficiently. This can be achieved either by
considering data when in an alternating way only one reactor is running or by
directional sensitivity obtained from the neutron displacement in the detector.


title: Multiparticle Dynamics 2004

abstract:
  We summarize results presented at this conference with special emphasis on
hard processes with jets and heavy quarks, soft particle production, small x
structure functions and diffraction as well as heavy ion collisions and quark
gluon plasma.


title: The Standard Model Prediction of the Muon Anomalous Magnetic Moment

abstract:
  This article reviews and updates the Standard Model prediction of the muon
g-2. QED, electroweak and hadronic contributions are presented, and open
questions discussed. The theoretical prediction deviates from the present
experimental value by 2-3 standard deviations, if e+e- annihilation data are
used to evaluate the leading hadronic term.


title: Two loop MSbar gluon pole mass from the LCO formalism

abstract:
  We compute the pole mass of the gluon in QCD from the local composite
operator formalism at two loops in the MSbar renormalization scheme. For
Yang-Mills theory an estimate of the mass at two loops is 2.13 Lambda_MSbar.


title: Inflationary Solution to the Strong CP and $\mu$ Problems

abstract:
  We show that the vacuum expectation value of the inflaton at the Peccei-Quinn
axion scale can generate the supersymmetric Higgs mass $\mu$ term. This
provides an inflationary simultaneous solution to the strong CP problem and the
$\mu$ problem of the Minimal Supersymmetric Standard Model, and gives a
testable prediction for the $\mu$ parameter: $\mu^2 \approx (0.25-0.5)m_0^2$,
where $m_0$ is the soft Higgs scalar mass. Our model involves a very small
Yukawa coupling of order $10^{-10}$, which could originate from an
extra-dimensional scenario or type I string theory.


title:
Comment on ``B->M_1 M_2: Factorization, charming penguins, strong
  phases, and polarization''

abstract:
  We show that the factorization formula for non-leptonic B decays to two light
flavor non-singlet mesons derived by Bauer et al. in the context of
soft-collinear effective theory is equivalent to the corresponding formula in
the QCD factorization approach. The apparent numerical differences in the
analysis of B->pi+pi data performed by these authors, as compared to previous
QCD factorization analyses, can largely be attributed to the neglect of known
perturbative and power corrections.


title:
The generalized parton distribution function (E^u+E^d)(x,xi,t) of the
  nucleon in the chiral quark soliton model

abstract:
  The unpolarized spin-flip isoscalar generalized parton distribution function
(E^u+E^d)(x,xi,t) is studied in the large-Nc limit at a low normalization point
in the framework of the chiral quark-soliton model. This is the first study of
generalized parton distribution functions in this model, which appear only at
the subleading order in the large-Nc limit. Particular emphasis is put
therefore on the demonstration of the theoretical consistency of the approach.
The forward limit of (E^u+E^d)(x,xi,t) of which only the first moment -- the
anomalous isoscalar magnetic moment of the nucleon -- is known
phenomenologically, is computed numerically. Observables sensitive to
(E^u+E^d)(x,xi,t) are discussed.


title: Two photon decay of $\pi^0$ and $\eta$ at finite temperature and density

abstract:
  A comparative study of the anomalous decays $\pi^0, \eta \to\gamma\gamma$, at
finite temperature and at finite density, is performed in the framework of the
three--flavor Nambu--Jona-Lasinio. The similarities and differences between
both scenarios are discussed. In both cases the lifetimes of these mesons
decrease significantly at the critical point, although this might not be
sufficient to observe enhancement of these decays in heavy-ion collisions.


title: Evolution of the parton dihadron fragmentation functions

abstract:
  Quark and gluon parton dihadron fragmentation functions and their evolution
are studied in the process of e+e- annihilation. We provide definitions of such
dihadron fragmentation functions in terms of parton matrix elements and derive
the momentum sum rules and their connection to single hadron fragmentation
functions. We parameterize results from the Lund Monte Carlo model JETSET as
the initial conditions for the parton dihadron fragmentation functions at the
scale Q_0^2=2 GeV^2. The evolution equations for the quark and gluon
fragmentation functions are solved numerically and the results at different
higher scales Q^2 agree well with JETSET results. The importance of the input
from the single fragmentation functions is pointed out.