title:
Minimal Lepton Flavour Violation and Leptogenesis with exclusively
  low-energy CP Violation

abstract:
  We study the implications of a successful leptogenesis within the framework
of Minimal Lepton Flavour Violation combined with radiative resonant
leptogenesis and the PMNS matrix being the only source of CP violation, which
can be obtained provided flavour effects are taken into account. We find that
the right amount of the baryon asymmetry of the universe can be generated under
the conditions of a normal hierarchy of the light neutrino masses, a
non-vanishing Majorana phase, sin(theta_{13})>0.13 and m_{nu,lightest}<0.04 eV.
If this is fulfilled, we find strong correlations among ratios of charged LFV
processes.


title: The Decay of the Inflaton in No-scale Supergravity

abstract:
  We study the decay of the inflaton in no-scale supergravity and show that
decay due to the gravitational interactions through supergravity effects is
highly suppressed relative to the case in minimal supergravity or models with a
generic Kahler potential. We also show that decay to gravitinos is suppressed.
We demonstrate that decay and sufficient reheating are possible with the
introduction of a non-trivial gauge kinetic term. This channel may be dominant
in no-scale supergravity, yet yields a re-heating temperature which is low
enough to avoid the gravitino problem while high enough for Big Bang
Nucleosynthesis and baryogenesis.


title: |V_td/V_ts| from QCD Sum Rules on the Light-Cone

abstract:
  The dominant theoretical uncertainty in extracting $|V_{td}/V_{ts}|$ from the
ratio of branching ratios $R_{\rho/\omega}\equiv\bar{\cal B}(B\to
(\rho,\omega)\gamma)/\bar{\cal B}(B\to K^* \gamma)$ is given by the ratio of
form factors $\xi_{\rho}\equiv T_1^{B\to
  K^*}(0)/T_1^{B\to \rho}(0)$. We find $\xi_{\rho}= 1.17\pm 0.09$ from QCD sum
rules on the light-cone. Using QCD factorisation for the branching ratios,
including the most dominant power-suppressed effects beyond QCD factorisation,
and the current experimental results for $R_{\rho/\omega}$, this translates
into $|V_{td}/V_{ts}|_{\rm BaBar} = 0.199^{+0.023}_{-0.025}({\rm exp})\pm 0.014
({\rm th})$, which corresponds to $\gamma_{\rm BaBar} =
(61.0^{+13.5}_{-16.0}({\rm th}){}^{+8.9}_{-9.3}({\rm th}))$, and
$|V_{td}/V_{ts}|_{\rm Belle} = 0.207^{+0.028}_{-0.033}({\rm exp})
^{+0.014}_{-0.015}({\rm th})$, $\gamma_{\rm Belle} = (65.7^{+17.3}_{-20.7}({\rm
exp})^{+8.9}_{-9.2}({\rm th}))^\circ$.


title: Diffractive photoproduction of heavy quarks in hadronic collisions

abstract:
  In this letter we study the diffractive photoproduction of heavy quarks in
hadronic (pp/pA/AA) interactions for Tevatron and LHC energies. The integrated
cross section and rapidity distribution for the process h_1 h_2 --> h_1 h_2
QQBAR (h_i = p,A and Q = c,b) are estimated using the Color Glass Condensate
(CGC) formalism. Our results indicate that this production channel has larger
cross sections than the competing reactions of double diffractive production
and coherent AA reactions initiated by two-photon collisions.


title: MSW Oscillations - LMA and Subdominant Effects

abstract:
  New physics near the TeV scale could modify neutrino-matter interactions or
generate a relatively large neutrino magnetic (transition) moment. Both types
of effects have been discussed since the 1970's as alternatives to mass-induced
neutrino flavor oscillations. Nowadays, the availability of high-statistics
data makes it possible to turn the idea around and ask: How well do the simple
mass-induced oscillations describe solar neutrinos? At what level are the
above-mentioned nonstandard effects excluded? Can we use solar neutrinos to
constrain physics beyond the Standard Model? These notes review the sensitivity
of the present-day solar neutrino experiments to the nonstandard neutrino
interactions and transition moment and outline progress that may be expected in
the near future. Based on a talk given at the Neutrino 2006 conference.


title: 1/N_c Corrections in Meson-Baryon Scattering

abstract:
  Corrections to meson/ground-state baryon scattering amplitudes in the 1/N_c
expansion of QCD have previously been shown to be controlled by the t-channel
difference |I_t - J_t| of isospin and angular momentum and by the change of
hypercharge Y_t. Here we derive the corresponding expressions in the original
scattering s channel, allowing for nonzero meson spin and nontrivial SU(3)
flavor quantum numbers, and provide explicit examples of the crossing relevant
for pi N --> rho N and K N scattering.


title: Renormalization of 2PI resummation: a renormalization scheme approach

abstract:
  A practical method is suggested for performing renormalized 2PI resummation
at finite temperature using specific momentum dependent renormalization
schemes. In this method there is no need to solve Bethe-Salpeter equations for
2PI resummation. We examine the consistency of such schemes in the paper. The
proposed method is used to perform a two-loop renormalized 2PI resummation in
the finite temperature Phi^4 model.


title: Weak Deeply Virtual Compton Scattering

abstract:
  We extend the analysis of the deeply virtual Compton scattering process to
the weak interaction sector in the generalized Bjorken limit. The virtual
Compton scattering amplitudes for the weak neutral and charged currents are
calculated at the leading twist within the framework of the nonlocal light-cone
expansion via coordinate space QCD string operators. Using a simple model, we
estimate cross sections for neutrino scattering off the nucleon, relevant for
future high intensity neutrino beam facilities.


title: Kink modes and effective four dimensional fermion and Higgs brane models

abstract:
  In the construction of a classical smoothed out brane world model in five
dimensions, one uses a dynamically generated domain wall (a kink) to localise
an effective four dimensional theory. At the level of the Euler-Lagrange
equations the kink sets up a potential well, a mechanism which has been
employed extensively to obtain localised, four dimensional, massless chiral
fermions. We present the generalisation of this kink trapping mechanism for
both scalar and fermionic fields, and retain all degrees of freedom that were
present in the higher dimensional theory. We show that a kink background
induces a symmetric modified Poschl-Teller potential well, and give explicit
analytic forms for all the bound modes and a restricted set of the continuum
modes. We demonstrate that it is possible to confine an effective four
dimensional scalar field with a quartic potential of arbitrary shape. This can
be used to place the standard model electroweak Higgs field on the brane, and
also generate nested kink solutions. We also consider the limits of the
parameters in the theory which give thin kinks and localised and de-localised
scalar and fermionic fields.


title:
Potential for measuring the H^\pm W^\mp Z^0 vertex from WZ fusion at the
  Large Hadron Collider

abstract:
  We investigate the possibility of measuring the H^\pm W^\mp Z^0 vertex from
the single $H^\pm$ production process via WZ fusion at the CERN Large Hadron
Collider (LHC). This vertex strongly depends on the structure of the Higgs
sector in various new physics scenarios, so that its measurement can be useful
to distinguish the models. A signal and background simulation under the
expected detector performance at the LHC is done for the processes of pp \to
W^\pm Z^0 X \to H^\pm X \to tbX and pp \to W^\pm Z^0 X \to H^\pm X \to W^\pm
Z^0 X, and the required magnitudes of the H^\pm W^\mp Z^0 vertex for
observation are evaluated. It is found that although the loop induced H^\pm
W^\pm Z^0 vertex in multi-Higgs doublet models cannot be measurable, the latter
process can be useful to test the model with a real and a complex triplets.


title: The MC@NLO 3.3 Event Generator

abstract:
  This is the user's manual of MC@NLO 3.3. This package is a practical
implementation, based upon the HERWIG event generator, of the MC@NLO formalism,
which allows one to incorporate NLO QCD matrix elements consistently into a
parton shower framework. Processes available in this version include the
hadroproduction of single vector and Higgs bosons, vector boson pairs, heavy
quark pairs, single top, lepton pairs, and Higgs bosons in association with a W
or Z. Spin correlations are included for all processes except ZZ and WZ
production. This document is self-contained, but we emphasise the main
differences with respect to previous versions.


title: Virtual Effects of Split SUSY in Higgs Productions at Linear Colliders

abstract:
  In split supersymmetry the gauginos and higgsinos are the only supersymmetric
particles possibly accessible at foreseeable colliders like the CERN Large
Hadron Collider (LHC) and the International Linear Collider (ILC). In order to
account for the cosmic dark matter measured by WMAP, these gauginos and
higgsinos are stringently constrained and could be explored at the colliders
through their direct productions and/or virtual effects in some processes. The
clean environment and high luminosity of the ILC render the virtual effects of
percent level meaningful in unraveling the new physics effects. In this work we
assume split supersymmetry and calculate the virtual effects of the
WMAP-allowed gauginos and higgsinos in Higgs productions e+e- -> Z h and e+e-
-> \nu_e \bar_\nu_e h through WW fusion at the ILC. We find that the production
cross section of e+e- -> Zh can be altered by a few percent in some part of the
WMAP-allowed parameter space, while the correction to the WW-fusion process
e+e- -> \nu_e \bar_\nu_e h is below 1%. Such virtual effects are correlated
with the cross sections of chargino pair productions and can offer
complementary information in probing split supersymmetry at the colliders.


title:
Infrared freezing of Euclidean observables and analyticity in
  perturbative QCD

abstract:
  The renormalization-group improved finite order expansions of the QCD
observables have an unphysical singularity in the Euclidean region, due to the
Landau pole of the running coupling. Recently it was claimed that, by using a
modified Borel representation, the leading one-chain term in a skeleton
expansion of the Euclidean QCD observables is finite and continuous across the
Landau pole, and then exhibits an infrared freezing behaviour, vanishing at
$Q^2=0$. In the present paper we show, using for illustration the Adler-${\cal
D}$ function, that the above Borel prescription violates the causality
properties expressed by energy-plane analyticity: the function ${\cal D}(Q^2)$
thus defined is the boundary value of a piecewise analytic function in the
complex plane, instead of being a standard analytic function. So, the price to
be paid for the infrared freezing of Euclidean QCD observables is the loss of a
fundamental property of local quantum field theory.


title: The Inert Doublet Model: an Archetype for Dark Matter

abstract:
  The Inert Doublet Model (IDM), a two Higgs extension of the Standard Model
with an unbroken $Z_2$ symmetry, is a simple and yet rich model of dark matter.
We present a systematic analysis of the dark matter abundance and investigate
the potentialities for direct and gamma indirect detection. We show that the
model should be within the range of future experiments, like GLAST and ZEPLIN.
The lightest stable scalar in the IDM is a perfect example, or archetype of a
weakly interacting massive particle.


title: Two-loop SUSY QCD corrections to the neutralino masses in the MSSM

abstract:
  We have calculated the two-loop strong interaction corrections to the
neutralino pole masses in the DRbar'-scheme in the Minimal Supersymmetric
Standard Model (MSSM). We have performed a detailed numerical analysis for a
particular point in the parameter space and found corrections of a few tenths
of a percent. We agree with previously derived analytic formulae for two-loop
corrections to fermion masses.


title:
Unitarity cuts and reduction to master integrals in d dimensions for
  one-loop amplitudes

abstract:
  We present an alternative reduction to master integrals for one-loop
amplitudes using a unitarity cut method in arbitrary dimensions. We carry out
the reduction in two steps. The first step is a pure four-dimensional
cut-integration of tree amplitudes with a mass parameter, and the second step
is applying dimensional shift identities to master integrals. This reduction is
performed at the integrand level, so that coefficients can be read out
algebraically.


title:
Bounds on R-parity violating supersymmetric couplings from leptonic and
  semi-leptonic meson decays

abstract:
  We present a comprehensive update of the bounds on R-Parity violating
supersymmetric couplings from lepton-flavour- and lepton-number-violating decay
processes. We consider tau and mu decays as well as leptonic and semi-leptonic
decays of mesons. We present several new bounds resulting from tau, eta and
Kaon decays and correct some results in the literature concerning B-meson
decays.


title:
Neutrino flux ratios at neutrino telescopes: The role of uncertainties
  of neutrino mixing parameters and applications to neutrino decay

abstract:
  In this paper, we derive simple and general perturbative formulas for the
flavor flux ratios $R_{\alpha\beta}=\phi_{\nu_\alpha}/\phi_{\nu_\beta}$ that
could be measured at neutrino telescopes. We discuss in detail the role of the
uncertainties of the neutrino mixing parameters showing that they have to be
seriously taken into account in any realistic discussion about flavor
measurements at neutrino telescopes. In addition, we analyze the impact of such
uncertainties in telling the standard neutrino oscillation framework from
scenarios involving, e.g., neutrino decay and we find that the ratio $R_{e\mu}$
is the most sensitive one to "new physics" effects beyond the Standard Model.
We also compute the more realistic muon-to-shower ratio for a particular
configuration of the IceCube experiment, observing that using this experimental
quantity a clear separation between standard and non-standard neutrino physics
cannot be obtained.


title: Just so Higgs boson

abstract:
  We discuss a minimal extension to the standard model in which there are two
Higgs bosons and, in addition to the usual fermion content, two fermion
doublets and one fermion singlet. The little hierachy problem is solved by the
vanishing of the one-loop corrections to the quadratic terms of the scalar
potential. The electro-weak ground state is therefore stable for values of the
cut off up to 10 TeV. The Higgs boson mass can take values significantly larger
than the current LEP bounds and still be consistent with electro-weak precision
measurements.


title:
A Positive-Weight Next-to-Leading-Order Monte Carlo for e+e-
  Annihilation to Hadrons

abstract:
  We apply the positive-weight Monte Carlo method of Nason for simulating QCD
processes accurate to Next-To-Leading Order to the case of e+e- annihilation to
hadrons. The method entails the generation of the hardest gluon emission first
and then subsequently adding a `truncated' shower before the emission. We have
interfaced our result to the Herwig++ shower Monte Carlo program and obtained
better results than those obtained with Herwig++ at leading order with a matrix
element correction.


title: Angular ordering and parton showers for non-global QCD observables

abstract:
  We study the mismatch between a full calculation of non-global
single-logarithms in the large-N_c limit and an approximation based on free
azimuthal averaging, and the consequent angular-ordered pattern of soft gluon
radiation in QCD. We compare the results obtained in either case to those
obtained from the parton showers in the Monte Carlo event generators HERWIG and
PYTHIA, with the aim of assessing the accuracy of the parton showers with
regard to such observables where angular ordering is merely an approximation
even at leading-logarithmic accuracy and which are commonly employed for the
tuning of event generators to data.


title: Phenomenological relations for quark and neutrino mixing angles

abstract:
  The recent experimental data on mixing angles for quarks and neutrino have
been discussed. Quarks mixing angles are calculated in the phenomenological
approach of Fritzsch-Scadron-Delbourgo-Rupp (FSDR approach) using mass values
of light and heavy constituent quarks. The neutrino mixing angles have been
calculated with the high degree of precision with the help of the hypothesis of
quarks and neutrino mixing angles complementarity, the results obtained do not
contradict with the present experimental data.


title: On the coordinate representation of NLO BFKL

abstract:
  The ``non-Abelian'' part of the quark contribution to the BFKL kernel in the
next-to-leading order (NLO) is found in the coordinate representation by direct
transfer of the contribution from the momentum representation where it was
calculated before. The results obtained are used for the examination of
conformal properties of the NLO BFKL kernel and of the relation between the
BFKL and color dipole approaches.


title: 1-3 leptonic mixing and the neutrino oscillograms of the Earth

abstract:
  We develop a detailed and comprehensive description of neutrino oscillations
driven by the 1-3 mixing in the matter of the Earth. The description is valid
for the realistic (PREM) Earth density profile in the whole range of nadir
angles and for neutrino energies above 1 GeV. It can be applied to oscillations
of atmospheric and accelerator neutrinos. The results are presented in the form
of neutrino oscillograms of the Earth, i.e. the contours of equal oscillation
probabilities in the neutrino energy--nadir angle plane. A detailed physics
interpretation of the oscillograms, which includes the MSW peaks, parametric
ridges, local maxima, zeros and saddle points, is given in terms of the
amplitude and phase conditions. Precise analytic formulas for the probabilities
are obtained. We study the dependence of the oscillation pattern on theta_13
and find, in particular, that the transition probability P > 1/2 appears for
sin^2(2theta_13) as small as 0.009. We consider the dependence of the
oscillation pattern on the matter density profile and comment on the
possibility of the oscillation tomography of the Earth.


title: A Dark Matter Candidate from an Extra (Non-Universal) Dimension

abstract:
  We show that a recently constructed five-dimensional (5D) model with
gauge-Higgs unification and explicit Lorentz symmetry breaking in the bulk,
provides a natural dark matter candidate. This is the lightest Kaluza-Klein
particle odd under a certain discrete Z_2 symmetry, which has been introduced
to improve the naturalness of the model, and resembles KK-parity but is less
constraining.
  The dark matter candidate is the first KK mode of a 5D gauge field and
electroweak bounds force its mass above the TeV scale. Its pair annihilation
rate is too small to guarantee the correct relic abundance; however
coannihilations with colored particles greatly enhance the effective
annihilation rate, leading to realistic relic densities.


title: Connecting (Supersymmetry) LHC Measurements with High Scale Theories

abstract:
  If supersymmetry is discovered at the LHC, the measured spectrum of
superpartner masses and couplings will allow us to probe the origins of
supersymmetry breaking. However, to connect the collider-scale Lagrangian soft
parameters to the more fundamental theory from which they arise, it is usually
necessary to evolve them to higher scales. The apparent unification of gauge
couplings restricts the possible forms of new physics above the electroweak
scale, and suggests that such an extrapolation is possible. Even so, this task
is complicated if the low scale spectrum is not measured completely or
precisely, or if there is new physics at heavy scales beyond the reach of
collider experiments. In this work we study some of these obstacles to running
up, and we investigate how to get around them. Our main conclusion is that even
though such obstacles can make it very difficult to accurately determine the
values of all the soft parameters at the high scale, there exist a number of
special combinations of the soft parameters that can avoid these difficulties.
We also present a systematic application of our techniques in an explicit
example.


title:
Bounds on Spin-Dependent Lorentz Violation From Inverse Compton
  Observations

abstract:
  Some of the best bounds on possible Lorentz violation in the electron sector
come from observations of high-energy astrophysical phenomena. Using
measurements of TeV inverse Compton radiation from a number of sources, we
place the first bounds--at the 10^(-15) level--on seven of the electron d
coefficients.


title:
Hints on the high-energy seesaw mechanism from the low-energy neutrino
  spectrum

abstract:
  It is an experimental fact that the mass ratio for the two heavier neutrinos,
h = m_3/m_2 < 6, is much smaller than the typical quark and lepton hierarchies,
which are O(20-300). We have explored whether this peculiar pattern of neutrino
masses can be a consequence of the peculiar way they are generated through a
see-saw mechanism, determining 1) How the present experimental data restrict
the structure of the high-energy seesaw parameters and 2) Which choices, among
the allowed ones, produce more naturally the observed pattern of neutrino
masses. We have studied in particular if starting with hierarchical neutrino
Yukawa couplings, as for the other fermions, one can naturally get the observed
h~ 6 ratio. To perform the analysis we have put forward a top-down
parametrization of the see-saw mechanism in terms of (high-energy)
basis-independent quantities. Among the main results, we find that in most
cases m_2/m_1 >> m_3/m_2, so m_1 should be extremely tiny. Also, the V_R matrix
associated to the neutrino Yukawa couplings has a far from random structure,
naturally resembling V_CKM. In fact we show that identifying V_R and V_CKM, as
well as neutrino and u-quark Yukawa couplings can reproduce $h^{\rm exp}$ in a
highly non-trivial way, which is very suggestive. The physical implications of
these results are also discussed.


title: Branching fractions, polarisation and asymmetries of B -> VV decays

abstract:
  We calculate the hard-scattering kernels relevant to the negative-helicity
decay amplitude in B decays to two vector mesons in the framework of QCD
factorisation. We then perform a comprehensive analysis of the 34 B->VV decays,
including B_s decays and the complete set of polarisation observables. We find
considerable uncertainties from weak annihilation and the non-factorisation of
spectator-scattering. Large longitudinal polarisation is expected with
certainty only for a few tree-dominated colour-allowed modes, which receive
small penguin and spectator-scattering contributions. This allows for an
accurate determination of the CKM angle alpha (or gamma) from S_L(rhorho)
resulting in alpha=(85.6^{+7.4}_{-7.3}) degrees. We also emphasize that the rho
K* system is ideal for an investigation of electroweak penguin effects.


title:
Constraints on the Reheating Temperature in Gravitino Dark Matter
  Scenarios

abstract:
  Considering gravitino dark matter scenarios, we study constraints on the
reheating temperature of inflation. We present the gauge-invariant result for
the thermally produced gravitino yield to leading order in the Standard Model
gauge couplings. Within the framework of the constrained minimal supersymmetric
Standard Model (CMSSM), we find a maximum reheating temperature of about 10^7
GeV taking into account bound-state effects on the primordial $^6$Li abundance.
We show that late-time entropy production can relax this constraint
significantly. Only with a substantial entropy release after the decoupling of
the lightest Standard Model superpartner, thermal leptogenesis remains a viable
explanation of the cosmic baryon asymmetry within the CMSSM.


title:
CP and Lepton-Number Violation in GUT Neutrino Models with Abelian
  Flavour Symmetries

abstract:
  We study the possible magnitudes of CP and lepton-number-violating quantities
in specific GUT models of massive neutrinos with different Abelian flavour
groups, taking into account experimental constraints and requiring successful
leptogenesis. We discuss SU(5) and flipped SU(5) models that are consistent
with the present data on neutrino mixing and upper limits on the violations of
charged-lepton flavours and explore their predictions for the CP-violating
oscillation and Majorana phases. In particular, we discuss string-derived
flipped SU(5) models with selection rules that modify the GUT structure and
provide additional constraints on the operators, which are able to account for
the magnitudes of some of the coefficients that are often set as arbitrary
parameters in generic Abelian models.


title: Direct Detection of Dark Matter Rates for Various Wimps

abstract:
  The event rates for the direct detection of a dark matter candidate, which is
a Kaluza-Klein gauge boson, are evaluated for a number of nuclear targets.
Realistic form factors as well as spin ME and response functions are employed.


title:
Density profiles of supernova matter and determination of neutrino
  parameters

abstract:
  The flavor conversion of supernova neutrinos can lead to observable
signatures related to the unknown neutrino parameters. As one of the
determinants in dictating the efficiency of resonant flavor conversion, the
local density profile near the MSW resonance in a supernova environment is,
however, not so well understood. In this analysis, variable power-law functions
are adopted to represent the independent local density profiles near the
locations of resonance. It is shown that the uncertain matter density profile
in a supernova, the possible neutrino mass hierarchies, and the undetermined
1-3 mixing angle would result in six distinct scenarios in terms of the
survival probabilities of $\nu_{e}$ and $\bar{\nu_{e}}$. The feasibility of
probing the undetermined neutrino mass hierarchy and the 1-3 mixing angle with
the supernova neutrinos is then examined using several proposed experimental
observables. Given the incomplete knowledge of the supernova matter profile,
the analysis is further expanded to incorporate the Earth matter effect. The
possible impact due to the choice of models, which differ in the average energy
and in the luminosity of neutrinos, is also addressed in the analysis.


title: The brane as a Higgs domain wall: ideas and issues

abstract:
  The most obvious field-theoretic model for a brane is a scalar field domain
wall or kink. I discuss how this idea can be connected with spontaneous
internal symmetry breaking via a mechanism called the ``clash of symmetries''.
Compatibility with Randall and Sundrum's warped metric alternative to
compactification is then demonstrated. I end with brief remarks about open
questions.


title:
A_4 symmetry breaking scheme for understanding quark and lepton mixing
  angles

abstract:
  The neutrino mixing matrix has been measured to be of a form consistent with
tribimaximal mixing, while the quark mixing matrix is almost diagonal. A scheme
based on flavour A_4 symmetry for understanding these patterns simultaneously
is presented.


title: Diffractive $\chi$ Production at the Tevatron and the LHC

abstract:
  We present predictions for the diffractive production of $\chi$ mesons in the
central rapidity region usually covered by collider detectors. The predicted
cross sections are based on the Bialas-Landshoff formalism for both exclusive
and inclusive production and makes use of the DPEMC Monte-Carlo simulation
adapted with kinematics appropriate for small-mass diffractive production. We
compare generator-level results with a CDF measurement for exclusive $\chi$
production, and study background and other scenarios including the contribution
of inclusive $\chi$ production. The results agree with the Tevatron data and
are extrapolated, highlighting the exclusive $\chic$ production at LHC
energies. A possible new measurement at the Tevatron using the D{\O}forward
detectors is investigated, taking advantage of the dominance of exclusive
production for high enough diffractive mass fraction.


title: Lamb shift in muonic helium ion

abstract:
  The Lamb shift (2P_{1/2}-2S_{1/2}) in the muonic helium ion (mu ^4_2He)^+ is
calculated with the account of contributions of orders alpha^3, alpha^4,
alpha^5 and alpha^6. Special attention is given to corrections of the electron
vacuum polarization, the nuclear structure and recoil effects. The obtained
numerical value of the Lamb shift 1379.028 meV can be considered as a reliable
estimate for the comparison with experimental data.


title: LHC signals of T-odd heavy quarks in the Littlest Higgs model

abstract:
  Recently proposed Little Higgs models present a viable solution to the
naturalness problem of the Standard Model. An additional discrete symmetry,
called T-parity, has been included in the simplest Little Higgs models to evade
the constraints arising from electroweak precision data. The Littlest Higgs
model with T-parity (LHT) not only predicts a set of new fermions in addition
to the heavy gauge bosons of the original Little Higgs model, but also provides
a new candidate for dark matter. In this paper, we study two particularly
interesting signatures of T-odd fermion pair production at the LHC, namely,
  (a) jj + l^+ l^- + missing E_T and
  (b) jj + b \bar b + l^\pm + missing E_T.
  Using a parton level Monte Carlo event generator, we evaluate both the signal
as well as the standard model background profile for a selected set of model
parameters thereby developing a good discriminator. Finally, we scan the
parameter space and delineate the possible discovery region in the same.


title: A Wave-Packet View of Neutrino Oscillation and Pion Decay

abstract:
  Kinematical aspects of pion decay $\pi \to \mu \nu$ is studied, with neutrino
mixing taken into account. An attempt is made to derive the transition
probability for such a sequence of processes: a $\pi^+$ produced at
$(\vec{x}_{\pi},t_{\pi})$ with momentum $\vec{p}_{\pi}$ decays into a $\mu^+$
and a $\nu_{\mu}$ somewhere in space-time and then the $\mu^+$ is detected at
$(\vec{x}_{\mu},t_{\mu})$ with momentum $\vec{p}_{\mu}$ and a $\nu_{\alpha}$ (a
neutrino with flavor $\alpha = e$, $\mu$, $...$) is detected at
$(\vec{x}_{\nu},t_{\nu})$ with momentum $\vec{p}_{\nu}$. It is shown that (1)
if all the particles involved are treated as plane-waves, the energy-momentum
conservation would eliminate the neutrino oscillating terms, leaving each
mass-eigenstate to contribute separately to the transition probability; (2) if
one treats all the particles involved as wave-packets, the neutrino oscillating
terms would appear and would be multiplied by two suppression factors, which
result from distinction in velocity and in energy between the two interfering
neutrino mass-eigenstates. An approximate treatment which takes account of the
two complementary features, each of the particles involved propagates along its
classical trajectory on the one hand and energies and momenta of the particles
involved are conserved during the decay on the other hand, is proposed and
similarity and difference between our approach and that of Dolgov et al. are
discussed.


title: Spin Analysis of Supersymmetric Particles

abstract:
  The spin of supersymmetric particles can be determined at $e^+e^-$ colliders
unambiguously. This is demonstrated for a characteristic set of non-colored
supersymmetric particles -- smuons, selectrons, and charginos/neutralinos. The
analysis is based on the threshold behavior of the excitation curves for pair
production in $e^+e^-$ collisions, the angular distribution in the production
process and decay angular distributions. In the first step we present the
observables in the helicity formalism for the supersymmetric particles.
Subsequently we confront the results with corresponding analyses of
Kaluza-Klein particles in theories of universal extra space dimensions which
behave distinctly different from supersymmetric theories. It is shown in the
third step that a set of observables can be designed which signal the spin of
supersymmetric particles unambiguously without any model assumptions. Finally
in the fourth step it is demonstrated that the determination of the spin of
supersymmetric particles can be performed experimentally in practice at an
$e^+e^-$ collider.


title: Isolated Lepton Events at HERA: SUSY R-Parity Violation?

abstract:
  Events with an isolated high $p_T$ lepton, a hadron jet and missing energy as
observed in the H1 experiment at HERA, are potentially associated with R-parity
violation in supersymmetric theories. However, stringent kinematic constraints
must be fulfilled if the production of supersymmetric particles in R-parity
violating scenarios were the correct path for explaining these puzzling events.
A reference point \RF is specified for which these constraints are illustrated
and implications of the supersymmetric interpretation for new classes of
multi-lepton events are indicated.


title: Chiral Effective Field Theory in the Delta-resonance region

abstract:
  I discuss the problem of constructing an effective low-energy theory in the
vicinity of a resonance or a bound state. The focus is on the example of the
$\Delta(1232)$, the lightest resonance in the nucleon sector. Recent
developments of the chiral effective-field theory in the $\Delta$-resonance
region are briefly reviewed. I conclude with a comment on the merits of the
manifestly covariant formulation of chiral EFT in the baryon sector.


title: QCD condensates of dimension D=6 and D=8 from hadronic tau-decays

abstract:
  The high-precision data from hadronic tau decays allows one to extract
information on QCD condensates. Using the finalized ALEPH data, we obtain a
more rigorous determination of the dimension 6 and 8 condensates for the V-A
correlator. In particular, we find that the recent data fix a certain linear
combination of these QCD condensates to a precision at the level of O(2%). Our
approach relies on more general assumptions than alternative approaches based
on finite energy sum rules.


title: Probing TeV gravity at neutrino telescopes

abstract:
  Models with extra dimensions and the fundamental scale at the TeV could imply
sign als in large neutrino telescopes due to gravitational scattering of
cosmogenic neu trinos in the detection volume. Apart from the production of
microscopic black hol es, extensively studied in the literature, we present
gravity-mediated interactions at larger distances, that can be calculated in
the e ikonal approximation. In these elastic processes the neutrino loses a
small fracti on of energy to a hadronic shower and keeps going. The event rate
of these events is higher than that of black hole formation and the signal is
distinct: no charged leptons and possibly multiple-bang events.


title: Anomalies of Discrete Symmetries and Gauge Coupling Unification

abstract:
  The anomaly of a discrete symmetry is defined as the Jacobian of the
path-integral measure. Assuming that the anomaly at low energies is cancelled
by the Green-Schwarz (GS) mechanism at a fundamental scale, we investigate
possible Kac-Moody levels for anomalous discrete family symmetries. As the
first example, we consider discrete abelian baryon number and lepton number
symmetries in the minimal supersymmetric standard model with the see-saw
mechanism, and we find that the ordinary unification of gauge couplings is
inconsistent with the GS conditions, indicating the possible existence of
further Higgs doublets. We consider various recently proposed supersymmetric
models with a non-abelian discrete family symmetry. In a supersymmetric example
with $Q_{6}$ family symmetry, the GS conditions are such that the gauge
coupling unification appears close to the Planck scale.


title: Can the pomeron be derived from a Euclidean-Minkowskian duality?

abstract:
  After a brief review, in the first part, of some relevant analyticity and
crossing-symmetry properties of the correlation functions of two Wilson loops
in QCD, when going from Euclidean to Minkowskian theory, in the second part we
shall see how these properties can be related to the still unsolved problem of
the asymptotic s-dependence of the hadron-hadron total cross sections. In
particular, we critically discuss the question if (and how) a pomeron-like
behaviour can be derived from this Euclidean-Minkowskian duality.


title: Naturalized and simplified gauge mediation

abstract:
  Following recent developments in model building we construct a simple,
natural and controllable model of gauge-mediated supersymmetry breaking.


title:
Probing the octant of $\theta_{23}$ with very long baseline neutrino
  oscillation experiments: a global look

abstract:
  We investigate the baseline range in which the $\theta_{23}$ degeneracy in
neutrino oscillation probabilities is absent for fixed values of $\theta_{13}$
and CP violation phase $\delta_{\rm CP}$. We begin by studying sensitivities of
neutrino oscillation probabilities to $\theta_{13}$, $\theta_{23}$ and
$\delta_{\rm CP}$ for very-long-baseline neutrino oscillations. We show contour
graphs of the muon-neutrino survival probability $P(\nu_{\mu}\to \nu_{\mu})$
and the appearance probability $P(\nu_e\to \nu_{\mu})$ on the $\cos
2\theta_{23}-\sin 2\theta_{13}$ plane for baseline lengths $L=1000, 5000, \
10000$, and 12000 km. For each baseline length, it is found that
$P(\nu_{\mu}\to \nu_{\mu})$ is more sensitive to $\sin 2\theta_{13}$ at
energies around its local maximum while it is more sensitive to $\cos
2\theta_{23}$ at energies around its local minimum. On the other hand, the
appearance probability $P(\nu_e\to \nu_{\mu})$ is sensitive to
$\sin2\theta_{13}$ and $\cos2\theta_{23}$ only near its local maximum. We
observe that the $\theta_{23}$ degeneracy in $P(\nu_{\mu}\to \nu_{\mu})$ is
absent at energies around the local maximum of this probability, provided
$\theta_{13}$ is sufficiently large. The $\theta_{23}$ degeneracy is also
absent in general near the local maximum of $P(\nu_e\to \nu_{\mu})$. Using
analytic approximations for neutrino oscillation probabilities, we demonstrate
that the above observations for $L=1000, 5000, 10000, {\rm and} 12000$ km are
in fact valid for all distances. The implications of these results on probing
the octant of $\theta_{23}$ are discussed in details.


title: B_d and B_s mixing: mass and width differences and CP violation

abstract:
  B-B-bar mixing involves three physical parameters: the magnitudes of the
off-diagonal elements of the mass and decay matrices and their relative phase.
They are related to the mass and width differences between the mass eigenstates
and to the CP asymmetry in flavour-specific decays, a_fs. Introducing a new
operator basis I present new, more precise theory predictions for the width
differences in the B_s and B_d systems: in the Standard Model one finds Delta
Gamma_s = 0.088 +/- 0.017 ps^{-1} and Delta Gamma_d = (26.7 +5.8/-6.5) *
10^{-4} ps^{-1}. Updates of the mass differences Delta M_d and Delta M_s and of
a_{fs}^d and a_{fs}^s are also presented. Then I discuss how various present
and future measurements can be combined to constrain new physics. The
extraction of a new CP phase phi_s^Delta from data on a_{fs}^s also profits
from our new operator basis. Confronting our new formulae with D0 data we find
that sin phi_s^Delta deviates from zero by 2 sigma.


title: Neutrino Physics - Models for Neutrino Masses and Lepton Mixing

abstract:
  In these lecture notes we present mechanisms for the generation of Majorana
neutrino masses and lepton mixing. We consider simple extensions of the
Standard Model. Apart from a section about radiative mass generation, we put
special emphasis on the seesaw mechanism and mu-tau interchange symmetry.


title: SO(10): a theory of fermion masses and mixings

abstract:
  SO(10) grand unified theory seems to have all the ingredients to be a
complete unified theory of quarks and leptons. I review here its minimal,
possibly realistic versions, both supersymmetric and not.


title: Baryogenesis in Brans-Dicke theory

abstract:
  A new mechanism for baryogenesis is proposed in the context of an extended
Brans-Dicke (BD) theory. We generalize the BD scalar to complex field with CP
violating coupling to curvature and show that the charged BD current can be
enhanced during inflationary epoch. After inflation the current decays (via
tree level interactions) into the standard model particles. When the BD scalar
is charged under baryon and/or lepton number, the decay produces a net baryon
number. Rather generically a sufficiently large scalar current can be produced
during inflation to account for the observed baryon asymmetry of the Universe.
Our baryogensis scenario can in an elegant way be incorporated into a model of
extended inflation.


title: Positive parity pentaquark towers in large Nc QCD

abstract:
  We construct the complete set of positive parity pentaquarks, which
correspond in the quark model to {\bar s} q^{Nc+1} states with one unit of
orbital angular momentum L=1. In the large Nc limit they fall into the K=1/2
and K=3/2 irreps (towers) of the contracted SU(4)c symmetry. We derive
predictions for the mass spectrum and the axial couplings of these states at
leading order in 1/Nc. The strong decay width of the lowest-lying positive
parity exotic state is of order O(1/Nc), such that this state is narrow in the
large Nc limit. Replacing the antiquark with a heavy antiquark {\bar Q}
q^{Nc+1}, the two towers become degenerate, split only by O(1/mQ) hyperfine
interactions. We obtain predictions for the strong decay widths of heavy
pentaquarks to ordinary baryons and heavy H(*)_{\bar Q} mesons at leading order
in 1/Nc and 1/mQ.


title: Missing Partner Mechanism in SO(10) Grand Unification

abstract:
  We present a new possibility for achieving doublet-triplet splitting
naturally in supersymmetric SO(10) grand unified theories. It is based on a
missing partner mechanism which is realized with the 126 + 126-bar Higgs
superfields. These Higgs fields, which are also needed for generating Majorana
right-handed neutrino masses, contain a pair of color triplets in excess of
weak doublets. This feature enables us to remove the color triplets from the
low energy spectrum without fine-tuning. We give all the needed ingredients for
a successful implementation of the missing partner mechanism in SO(10) and
present explicit models wherein the Higgs doublet mass is protected against
possible non-renormalizable corrections to all orders. We also show how
realistic fermion masses can be generated in this context.


title: Physics Potential of SPS Upgrade in regard to Beta/EC Beams

abstract:
  The goal for future neutrino facilities is the determination of the
$[U_{e3}]$ mixing and CP violation in neutrino oscillations. This will require
precision experiments with a very intense neutrino source. With this objective
the creation of neutrino beams from the radioactive decay of boosted ions by
the SPS of CERN from either beta or electron capture transitions has been
propossed. We discuss the capabilities of such facilities as a function of the
energy of the boost and the baseline for the detector. We conclude that the SPS
upgrade to 1000 GeV is crucial to have a better sensitivity to CP violation if
it is accompanied by a longer baseline. We compare the physics potential for
two different configurations. In the case of beta beams, with the same boost
for both $\beta^+$ (neutrinos) and $\beta^-$ (antineutrinos), the two setups
are: I) $\gamma=120$, L=130 Km (Frejus); II) $\gamma=330$, L=650 Km (Canfranc).
In the case of monochromatic EC beams we exploit the energy dependence of
neutrino oscillations to separate out the two parameters $U(e3)$ and the CP
phase $\delta$. Setup I runs at $\gamma=90$ and $\gamma=195$ (maximum
achievable at present SPS) to Frejus, whereas Setup II runs at $\gamma=195$ and
$\gamma=440$ (maximum achievable at upgraded SPS) to Canfranc. The main
conclusion is that, whereas the gain in the determination of $U(e3)$ is rather
modest, setup II provides much better sensitivity to CP violation.


title:
Physics impact of ILC Higgs coupling measurements: the effect of theory
  uncertainties

abstract:
  We study the effect of theoretical and parametric uncertainties on the
ability of future Higgs coupling measurements at the International Linear
Collider (ILC) to reveal deviations from the Standard Model (SM). To quantify
the impact of these uncertainties we plot Delta chi^2 = 25 contours for the
deviations between the SM Higgs couplings and the light Higgs couplings in the
mh-max benchmark scenario of the Minimal Supersymmetric Standard Model (MSSM).
We consider the theoretical uncertainties in the SM Higgs decay partial widths
and production cross section and the parametric uncertainties in the bottom and
charm masses and the strong coupling alpha_s. We find that the impact of the
theoretical and parametric uncertainties is moderate in the first phase of ILC
data-taking (500 fb-1 at 350 GeV centre-of-mass energy), reducing the "reach"
in the CP-odd MSSM Higgs mass M_A by about 10% to ~500 GeV, while in the second
phase (1000 fb-1 at 1000 GeV) these uncertainties are larger than the
experimental uncertainties and reduce the reach in M_A by about a factor of
two, from ~1200 down to ~600 GeV. The bulk of the effect comes from the
parametric uncertainties in m_b and alpha_s, followed by the theoretical
uncertainty in Gamma_b.


title:
Running with Triplets: How Slepton Masses Change With Doubly-Charged
  Higgses

abstract:
  We examine the slepton masses of SUSYLR models and how they change due the
presence of light-doubly charged higgs bosons. We discover that the measurement
of the slepton masses could bound and even predict the value of the third
generation Yukawa coupling of leptons to the SU(2)_R Triplets. We also consider
the unification prospects for this model with the addition of left-handed, B -
L = 0 triplets--a model we call the Triplet Extended Supersymmetric Standard
Model (TESSM). Finally, we discuss the changes in the slepton masses due to the
presence of the SU(2)_L triplets.


title:
Searching for Effects of Spatial Noncommutativity via Chern-Simons'
  Processes

abstract:
  The possibility of testing spatial noncommutativity in the case of both
position-position and momentum-momentum noncommuting via a Chern-Simons'
process is explored. A Chern-Simons process can be realized by an interaction
of a charged particle in special crossed electric and magnetic fields, in which
the Chern-Simons term leads to non-trivial dynamics in the limit of vanishing
kinetic energy. Spatial noncommutativity leads to the spectrum of the orbital
angular momentum possessing fractional values. Furthermore, in both limits of
vanishing kinetic energy and subsequent vanishing magnetic field, the
Chern-Simons term leads to this system having non-trivial dynamics again, and
the dominant value of the lowest orbital angular momentum being $\hbar/4$,
which is a clear signal of spatial noncommutativity. An experimental
verification of this prediction by a Stern-Gerlach-type experiment is
suggested.


title: Meson Mixing in Pion Superfluid

abstract:
  We investigate meson mixing and meson coupling constants in pion superfluid
in the framework of two flavor NJL model at finite isospin density. The mixing
strength develops fast with increasing isospin chemical potential, and the
coupling constants in normal phase and in the pion superfluid phase behave very
differently.


title: Braneworld graviton interactions in early universe phase transitions

abstract:
  These are proceedings for the Les Houches Summer School ``Particle Physics
and Cosmology: the Fabric of Spacetime,'' held in Les Houches, France, July
31--August 25, 2006. We summarise the discussions of our working group and
outline a procedure for calculating gravity corrections to scalar field
potentials, as they might be relevant for inflationary physics. We focus on a
specific Randall--Sundrum type braneworld scenario and discuss the relevance of
Kaluza--Klein gravitons due to the extra warped dimension.


title: NLO BFKL at work: the electroproduction of two light vector mesons

abstract:
  The amplitude for the forward electroproduction of two light vector mesons
can be written completely within perturbative QCD in the Regge limit with
next-to-leading accuracy, thus providing the first example of a physical
application of the BFKL approach at the next-to-leading order. Recently, a
numerical determination of the amplitude has been obtained in the case of equal
photon virtualities, by using a definite representation for the amplitude and a
definite optimization method for the perturbative series. Here, we study the
main systematic effects in the previous determination, by considering a
different representation of the amplitude and different optimization methods of
the perturbative series. Moreover, we compare our result for the differential
cross section at the minimum $|t|$ with a different approach, based on
collinear kernel improvement.


title:
The Reggeon $\to$ 2 Reggeons $+$ Particle vertex in the Lipatov
  effective action formalism

abstract:
  The vertex for gluon emission during the splitting of a reggeized gluon into
two is constructed in the framework of Lipatov effective action formalism. Its
reduction to a pure transverse form for the diffractive amplitude gives the
standard Bartels vertex plus an additional contribution corresponding to the
emission from a pointlike splitting vertex. This additional contribution turns
out to be given by a longitudinal integral divergent both in the ultraviolet
and infrared. A certain specific recipe for this part, including the principal
value prescription for the integration, allows to eliminate this unwanted
contribution.


title:
Inclusive pentaquark and strange baryons production in hadron beam
  experiments at high energy

abstract:
  We estimate the high-energy behavior of the $\Theta^+$ and $\Lambda(1520)$
production cross sections in inclusive $pp$ collisions using the $K$ exchange
diagram. We show that the cross section of the $\Theta^+$-production is
suppressed compared to the production of $\Lambda(1520)$. As a byproduct we
also estimate the contribution of the $\pi$ exchange diagram for the inclusive
$\Lambda(1520)$ production in $\Sigma p$ collisions.


title: Constraints on New Physics from gamma and |V_ub|

abstract:
  The SM unitarity triangle (UT) is completely determined by the parameters
$\gamma$ and $|V_{ub}|$ which can be extracted from tree-level processes and
are assumed to be free of new physics. By comparison with other determinations
of UT parameters one can impose constraints on new physics in loop processes,
in particular $B$ mixing.


title:
Exact calculations of vertex $\bar{s}\gamma b$ and $\bar{s} Z b$ in the
  unitary gauge

abstract:
  In this paper, we present the exact calculations for the vertex
$\bar{s}\gamma b$ and $\bar{s} Z b$ in the unitary gauge. We found that (a) the
divergent- and $\mu$-dependent terms are left in the effective vertex function
$\Gamma^\gamma_\mu(p,k)$ for $b \to s \gamma$ transition even after we sum up
the contributions from four related Feynman diagrams; (b) for an on-shell
photon, such terms do not contribute et al; (c) for off-shell photon, these
terms will be canceled when the contributions from both vertex $\bar{s}\gamma
b$ and $\bar{s} Z b$ are taken into account simultaneously, and therefore the
finite and gauge independent function $Z_0(x_t)=C_0(x_t)+ D_0(x_t)/4$, which
governs the semi-leptonic decay $b \to s l^- l^+$, is derived in the unitary
gauge.


title: Lepton flavour violation in The Little Higgs model

abstract:
  Little Higgs models with T-parity have a new source of lepton flavour
violation. In this paper we consider the anomalous magnetic moment of the muon
\gmtwo and the lepton flavour violating decays \mutoeg and \tautomug in Little
Higgs model with T-parity \cite{Goyal:2006vq}. Our results shows that present
experimental constraints of \mutoeg is much more useful to constrain the new
sources of flavour violation which are present in T-parity models.


title:
Corrections to Tri-bimaximal Neutrino Mixing: Renormalization and Planck
  Scale Effects

abstract:
  We study corrections to tri-bimaximal (TBM) neutrino mixing from
renormalization group (RG) running and from Planck scale effects. We show that
while the RG effects are negligible in the standard model (SM), for
quasi-degenerate neutrinos and large $\tan\beta$ in the minimal supersymmetric
standard model (MSSM) all three mixing angles may change significantly. In both
these cases, the direction of the modification of $\theta_{12}$ is fixed, while
that of $\theta_{23}$ is determined by the neutrino mass ordering. The Planck
scale effects can also change $\theta_{12}$ up to a few degrees in either
direction for quasi-degenerate neutrinos. These effects may dominate over the
RG effects in the SM, and in the MSSM with small $\tan \beta$. The usual
constraints on neutrino masses, Majorana phases or $\tan \beta$ stemming from
RG running arguments can then be relaxed. We quantify the extent of Planck
effects on the mixing angles in terms of "mismatch phases" which break the
symmetries leading to TBM. In particular, we show that when the mismatch phases
vanish, the mixing angles are not affected in spite of the Planck scale
contribution. Similar statements may be made for $\mu$-$\tau$ symmetric mass
matrices.


title: Four-Loop Anomalous Dimensions for Radiative Flavour-Changing Decays

abstract:
  We evaluate the complete four-loop anomalous dimension matrix that is
necessary for determining the effective flavour-changing neutral current
couplings qbar-q'-gamma and qbar-q'-g at the next-to-next-to-leading order in
QCD. The resulting O(alpha_s^2(mu_b)) correction to the B -> X_s gamma
branching ratio amounts to around -2.9% for mu_b = 5 GeV, and -4.4% for mu_b =
2.5 GeV


title: Neutrino Physics around MeV Energies

abstract:
  We present a brief informative overview of a broad ranges of subjects, the
solar, the reactor, the geo and the supernova neutrinos (but without excluding
possible biases), the topics which consist of the session ``Neutrino Physics
around MeV Energies'' in NOW2006. Contrary to the naive expectation, the field
is found to be very active in improving the performance of existing detectors,
and in preparation for the development coming in the near future. The former
includes excellent performance of SNO 3He detector, successful reconstruction
of SK III, and KamLAND's new ``4pi'' calibration. The next data release from
these experiments will be very exciting. The latter includes effort for
lowering threshold in SK III, KamLAND's purification by which geo-neutrino
observation becomes much cleaner, and the forthcoming 7Be neutrino measurement
by BOREXINO and KamLAND. Possible detection of relic supernova neutrinos and
non-zero effect of theta_{13} would bring us great excitement. Furthermore,
improved new measurement of heavy element abundance in the solar atmosphere
resulted in a solar model with much lower CNO \nu flux and with disagreement
with helioseismology, thereby bringing us a new solar puzzle.


title: Very Light Gravitino Dark Matter

abstract:
  We address the question of dark matter in the context of gauge mediated
supersymmetry breaking models. In contrast with mSUGRA scenarios, the messenger
of the susy breaking to the visible sector can play an important role allowing
a relic gravitino in the $\sim {keV}$ to $10 {MeV}$ mass range to account for
the cold dark matter in the Universe.


title: Heavy Quark Spectroscopy -- Theory Overview

abstract:
  Some recent discoveries in the spectroscopy of hadrons containing heavy
quarks, and some of their theoretical interpretations, are reviewed.


title: Chiral dynamics and s-wave exotic hadrons

abstract:
  Based on chiral dynamics, existence of exotic hadrons is discussed in the
SU(3) symmetric limit. The low energy s-wave interaction of the Nambu-Goldstone
boson with a hadron is known to be determined model-independently, which has
been used to generate some hadron resonances in nonexotic channels. We show
that this interaction in any exotic channels is not strong enough to generate a
bound state.


title: Space-Time Duality and Vacuum Energy

abstract:
  The concept of Euclidean time is proposed which is dual to the usual
Minkowski time. The De Sitter solution is shown to be dual to the anti-De
Sitter solution under the dual transformation in which Euclidean time and
Minkowski time are interchanged. This observation enables us to make a proposal
in which supersymmetry is broken, but the four dimensional cosmological
constant remains zero. An explicit model is proposed in which we calculate the
cosmological constant. The phenomenology based on this model is presented,
including the issue of the quark-lepton-Higgs mass matrix.


title:
Chiral-Odd Generalized Parton Distributions, Transversity and Double
  Transverse-Spin Asymmetry in Drell-Yan Dilepton Production

abstract:
  Within the framework of light-cone quantization we derive the overlap
representation of generalized parton distributions for transversely polarized
quarks using the Fock-state decomposition in the transverse-spin basis. We
apply this formalism to the case of light-cone wave functions in a constituent
quark model giving numerical results for the four chiral-odd generalized parton
distributions in a region where they describe the emission and reabsorption of
a quark by the nucleon. With the transversity distribution obtained in the
forward limit of the generalized distribution, we provide some predictions for
the double transverse-spin asymmetry in Drell-Yan dilepton production in the
kinematics of the PAX experiment.


title:
Physical Origin of Chiral States and Near-Threshold Resonances Observed
  at BES

abstract:
  The purpose of my talk is to explain physical backgrounds of the chiral
states, which are predicted to exist generally in the low mass regions of
hadrons, containing light quarks, and to stimulate the experimental and
phenomenological search for their candidates. The contents are organized as
follows: section 1. Present Status of Hadron Spectroscopy, section 2. Some
Basic Consideration on Quark Confinement, section 3. Essentials of Description
of Composite Hadron in U~(12)-Scheme, section 4. Revisal of Meson and Baryon
Wave Functions and Chiral States, section 5. Multi-Quark Hadrons and
Near-Threshold Resonances, section 6. Concluding Remarks


title:
Properties of the Ground-State q bar q Mesons and Possible
  Classification of Observed Mesons in the U~(12)_SF X O(3,1)_L Scheme

abstract:
  We examine possible assignments for known mesons to the predicted
ground-state q bar q multiplets in the U~(12)_SF-classification scheme of
hadrons, based on their observed properties. The masses of missing members of
the ground-state multiplets are estimated, using a phenomenological mixing
scheme for the normal- and extra-spin wave functions specific to this
classification scheme. We also examine experimental candidates for the excited
1P, 1D and 2S multiplets in a framework of the U~(12)_SF X
O(3,1)_L-classification scheme, based on the analysis of the ground-state
masses. Then we see that the two exotic mesons pi_1(1400) and pi_1(1600) with
J^PC=1^-+ have suitable masses to be assigned to the P-wave excitation and also
there are a number of observed mesonic states which could be classified in
terms of the U~(12)_SF X O(3,1)_L scheme.


title: Radiative Decays of q bar q Chiral States in the U~(12)-Scheme

abstract:
  The radiative transitions between ground-states (GS) of light q bar q mesons
are investigated in the U~(12)-scheme. In this scheme the rich decay-spectra
are offered even in transition between GS due to the appearance of chiral
states. As a result the radiative decay widths of the ordinary V -> P gamma
process are well reproduced, and furthermore, the predicted width of
b_{1}(1235) -> pi gamma process (Gamma_{theor}=229 keV), by assigning
b_{1}(1235) as a member of the {}^{3}S_{1} chiral states A^{(E)}, is in good
agreement with experimental one (Gamma_{exp} =230 +- 60 keV). From this results
it is indicated that b_{1}(1235) meson, classified as {}^{1}P_{1} state in
conventional non-relativistic (NR) classification scheme, is a good candidate
of chiral state in the U~(12)-scheme. The other radiative transition widths of
some chiral states are also predicted. Accordingly the predicted values given
here, will provide useful insights in their search at BES.


title:
Experimental Indication of Existence of Extra Light-Vector Mesons
  omega'(1.3) and rho'(1.3)

abstract:
  Mass distributions of pi^+ pi^- pi^0 and omega pi^0 systems in the e^+ e^-
annihilation obtained by the several experiments are analyzed. We obtain
indication of light-vector mesons omega'(1.3) and rho'(1.3) in the lower mass
region. Those states are expected to exist in the U~(12)-classification scheme.


title: kappa Particle in the Analysis of the BESII Data and Chiral sigma Nonet

abstract:
  The observation of the scalar meson, kappa(900) was reported in the fall of
the last year in the analyses on the K pi system of the J/psi -> bar K^*(892)^0
K^+ pi^- decay data obtained by the BES collaboration. The analyses have been
performed by two groups of the collaboration. The results obtained in the both
analyses are in good agreement. They are also in good agreement with those
obtained in the analysis of D^+ -> K^- pi^+ pi^+ decay by the E791 experiment.
The evidence for the existence of the kappa(900) particle in the production
process as well as in the scattering process confirms the scalar sigma nonet
with that of sigma(600), firmly. It may be the chiral scalar sigma nonet which
is the chiral partner of the pi nonet. Here, the essential points of the
analysis of kappa(900) in the BES J/psi decay data, a brief review on present
status of the observation of sigma(600) and kappa(900) and also the chiral
scalar sigma nonet are presented. It is also tried to summarize the relation
between the pi pi (K pi) scattering and the production amplitudes, relating
with comments which were presented in the course of studies of the sigma(600)
and the kappa(900) particles. The comments concern with the apparent
differences between the pi pi (K pi) scattering phase shift data and the mass
spectra of the pi pi (K pi) system in the production processes observed
experimentally.


title: Shrinking fermionic modes, on the lattice and in the continuum

abstract:
  Recent lattice data indicates that volume occupied by topological fermionic
modes shrinks to zero in the continuum limit of vanishing lattice spacing. The
data apparently cannot be accommodated within, say, conventional instanton
model. We review field-theoretic arguments which demonstrate that the
topological fermionic modes are to shrink to a vanishing submanifold of the
whole four dimensional space provided that measurements are performed with high
resolution. Moreover, the data fit well the emerging overall picture of
lower-dimensional defects in the Euclidean vacuum of Yang-Mills theories. We
also mention results on localization of scalar particles.


title:
From confining fields on the lattice to higher dimensions in the
  continuum

abstract:
  We discuss relation between lattice phenomenology of confining fields in the
vacuum state of Yang-Mills theories (mostly SU(2) case) and continuum theories.
In the continuum, understanding of the confinement is most straightforward in
the dual formulation which involves higher dimensions. We try to bridge these
two approaches to the confinement, let it be on a rudimentary level. We review
lattice data on low-dimensional defects, that is monopoles, center vortices,
topological defects. There is certain resemblance to dual strings, domain
walls, introduced in large-N Yang-Mills theories.


title:
Collinear Photon Emission from the Quark-Gluon Plasma: The Light-Cone
  Path Integral Formulation

abstract:
  We give a simple physical derivation of the photon emission rate from the
weakly coupled quark-gluon plasma connected with the collinear processes $q\to
\gamma q$ and $q\bar{q}\to \gamma$. The analysis is based on the light-cone
path integral approach to the induced radiation. Our results agree with that by
Arnold, Moore and Yaffe obtained using the real-time thermal perturbation
theory. It is demonstrated that the solution of the AMY integral equation is
nothing but the time-integrated Green's function of the light-cone path
integral approach written in the momentum representation.


title: Z_3 Symmetry and Neutrino Mixing in Type II Seesaw

abstract:
  Neutrino mixing matrix satisfying the current experimental data can be well
described by the HPS tri-bimaximal mixing matrix. We propose that its origin
can be understood within the seesaw framework by a hidden condition on the mass
matrix of heavy right-handed neutrinos under the transformation of the Abelian
finite group Z_3 on the flavor basis. Ignoring CP phases, we show that it can
lead to the generic form of the effective light neutrino mass matrix from which
the HPS mixing matrix appears naturally, as well as an expeimentally allowed
non-zero \sin\theta_{13}. We show that the model based on our proposal is in
good agreement with the current experimental data.


title: Why there is no spin-orbit inversion in heavy-light mesons?

abstract:
  We show that the absence of spin-orbit inversions in heavy-light mesons can
be explained by the chiral radiative corrections in potential model. A new
potential model estimate is given of the masses for P-wave bottom mesons.


title: Production of Secondaries in High Energy Heavy Ion Collisions

abstract:
  In the framework of Quark-Gluon String Model we calculate the inclusive
spectra of secondaries produced in heavy ion collisions at intermediate (CERN
SPS) and at much higher (RHIC) energies. We demonstrate that the mechanism of
secondary production changed drastically in the energy interval $\sqrt{s} = 20
- 60$ GeV and that is in agreement with qualitative estimates of Glauber-Gribov
theory. The results of numerical calculations at intermediate energies are in
reasonable agreement with the data. At RHIC energies numerically large
inelastic screening corrections should be accounted for in calculations.


title: QCD fits to diffraction

abstract:
  The most recent H1 and ZEUS data for diffractive structure functions are
analyzed under three different theoretical approaches. This includes the
Pomeron Structure Function (PSF) framework, Bartels-Ellis-Kowalski-Wusthoff
(BEKW) color dipole approach and the Golec-Biernat-Wusthoff (GBW) saturation
model. The models are shown to successfully fit the set of combined data.
Conceptual differences between the models are discussed and, as an example, the
prediction for the longitudinal diffractive structure function is presented.


title: Soft Supersymmetry Breaking at Heavy Chiral Threshold

abstract:
  We discuss the structure of threshold corrections to soft
supersymmetry-breaking parameters at the mass threshold of heavy chiral
superfields. Nontrivial dependence on soft parameters of heavy matter fields
originates from the `physical' definition of the threshold scale, at which the
general form of soft supersymmetry breaking is derived in the superfield
coupling formalism.


title: Magnetic Fields in Quantum Degenerate Systems and in Vacuum

abstract:
  We consider self-magnetization of charged and neutral vector bosons bearing a
magnetic moment in a gas and in vacuum. For charged vector bosons (W bosons) a
divergence of the magnetization in both the medium and the electroweak vacuum
occurs for the critical field B=B_{wc}=m_{w}^{2}/e. For B>B_{wc} the system is
unstable. This behavior suggests the occurrence of a phase transition at
B=B_{c}, where the field is self-consistently maintained. This mechanism
actually prevents $B$ from reaching the critical value B_{c}. For virtual
neutral vector bosons bearing an anomalous magnetic moment, the ground state
has a similar behavior for B=B_{nbc}=m_{nb}^{2}/q . The magnetization in the
medium is associated to a Bose-Einstein condensate and we conjecture a similar
condensate occurs also in the case of vacuum.
  The model is applied to virtual electron-positron pairs bosonization in a
magnetic field B \sim B_{pc}\lesssim 2m_{e}^{2}/e, where m_e is the electron
mass. This would lead also to vacuum self-magnetization in QED, where in both
cases the symmetry breaking is due to a condensate of quasi-massless particles.


title:
The cos 2 phi asymmetry of Drell-Yan and J/psi production in unpolarized
  ppbar scattering

abstract:
  We investigate the cos 2 phi azimuthal asymmetry in Drell--Yan and J/psi
production from unpolarized ppbar scattering at GSI-HESR energies. The
contribution to this asymmetry arising from the leading-twist Boer-Mulders
function h_1^perp(x, k_T^2), which describes a correlation between the
transverse momentum and the transverse spin of quarks in an unpolarized hadron,
is explicitly evaluated, and predictions for the GSI-HESR kinematic regime are
presented. We show that the cos 2 phi asymmetry is quite sizable both on the
J/psi peak and in the Drell-Yan continuum region. Therefore these processes may
offer an experimentally viable access to the Boer-Mulders function in the early
unpolarized stage of GSI experiments.


title: Generalized parton distributions of hadrons with composite constituents

abstract:
  A method is described for calculating the Generalized Parton Distributions
(GPDs) of spin 1/2 hadrons made of composite constituents, in an Impulse
Approximation framework. GPDs are obtained from the convolution between the
light cone non-diagonal momentum distribution of the hadron and the GPD of the
constituent. DIS structure functions and electromagnetic form factors are
consistently recovered with the proposed formalism. Results are presented for
the nucleon and for the $^3$He nucleus. For a nucleon assumed to be made of
composite constituent quarks, the proposed scheme permits to study the
so-called Efremov-Radyushkin-Brodsky-Lepage (ERBL) region, difficult to access
in model calculations. Results are presented for both helicity-independent and
helicity-dependent GPDs. For $^3$He, the calculation has been performed by
evaluating a non-diagonal spectral function within the AV18 interaction. It
turns out that a measurement of GPDs for $^3$He could shed new light on the
short-range nuclear structure at the quark level.


title: Generalized parton distributions of few body systems

abstract:
  The relevance of measuring Generalized Parton Distributions (GPDs) for few
nucleon systems is illustrated. An approach which permits to calculate the GPDs
of hadrons made of composite constituents by proper convolutions is described.
The application of the method to the nucleon target, assumed to be made of
composite constituents is reviewed. Calculations of GPDs for few nucleon
systems are summarized, with special emphasis to the $^3$He target.


title: Hadronic B decays

abstract:
  I briefly summarize the factorization approach to hadronic B decays
emphasizing theoretical results that have become available recently. The
discussion of its application to data is abridged, and only the determination
of gamma=(71\pm 5) degrees from time-dependent CP asymmetries is included in
some detail.


title:
Neutron single spin asymmetries from semi-inclusive deep inelastic
  scattering off transversely polarized $^3$He

abstract:
  A study of semi-inclusive deep inelastic scattering off transversely
polarized $^3$He is presented. The formal expressions of the Collins and Sivers
contributions to the azimuthal single spin asymmetry for the production of
leading pions are derived, in impulse approximation, and estimated in the
kinematics of forth-coming experiments at JLab. The AV18 interaction has been
used for a realistic description of the nuclear dynamics; the nucleon structure
has been described by proper parameterizations of data or suitable model
calculations. The initial transverse momentum of the struck quark has been
properly included in the calculation. The crucial issue of extracting the
neutron information from $^3$He data, planned to shed some light on the
puzzling experimental scenario arisen from recent measurements for the proton
and the deuteron, is thoroughly discussed. It is found that a model independent
procedure, widely used in inclusive deep inelastic scattering to take into
account the momentum and energy distributions of the bound nucleons in $^3$He,
can be applied also in the kinematics of the planned JLab experiments, although
fragmentation functions, not only parton distributions, are involved. The
possible role played by final state interactions in the process under
investigation is addressed.


title:
QCD Studies at Hadron Colliders and in Deeply Virtual Neutrino
  Scattering

abstract:
  This thesis work summarizes studies in QCD for applications both at hadron
colliders and in exclusive processes. In the first part we focus our attention
on the study of the initial state scaling violations and the evolution of the
unpolarized parton distributions through Next-to-Next to Leading Order (NNLO)
in $\alpha_s$, the strong coupling, suitable for precision studies of the
parton model at the LHC. Specifically, we analize the methods available to
solve the equations and develope the theory of the logarithmic expansions at
the same perturbative order. A study of the Higgs total cross section is
included. The theoretical analysis is accompanied by the developement of
professional software partly documented in this thesis. We also include one
study of the evolution of the transverse spin distributions (the Soffer
inequality) and a parallel study of the asymmetries for the Drell-Yan process
for the proposed Pax experiment at GSI at NLO. In the second part we introduce
the extension of Deeply Virtual Compton Scattering to the electroweak sector
for neutrino detection at neutrino factories at intermediate energy.


title:
On mass limits for leptoquarks from $ K_L^0 \to e^{\mp} \mu^{\pm}, B^0
  \to e^{\mp} \tau^{\pm} $ decays

abstract:
  The contributions of the scalar leptoquark doublets into widths of the $K^0_L
\to e^{\mp} \mu^{\pm}$, $B^0 \to e^{\mp} \tau^{\pm}$ decays are calculated in
MQLS model with Higgs mechanism of the quark-lepton mass splitting. The
resulted mass limits for the scalar leptoquarks are investigated in comparision
with those for vector and chiral gauge leptoquarks. It is shown that the scalar
leptoquark mass limits are essentially weaker (about $200 GeV$) than those (a
few hundreds $TeV$) for gauge leptoquarks. The search for such scalar
leptoquark doublets at LHC and the search for the leptonic decays $ B^0 \to
l^+_i l^-_j $ are of interest.


title: Unified TeV Scale Picture of Baryogenesis and Dark Matter

abstract:
  We present a simple extension of MSSM which provides a unified picture of
cosmological baryon asymmetry and dark matter. Our model introduces a gauge
singlet field $N$ and a color triplet field $X$ which couple to the
right--handed quark fields. The out--of equilibrium decay of the Majorana
fermion $N$ mediated by the exchange of the scalar field $X$ generates adequate
baryon asymmetry for $M_N \sim 100$ GeV and $M_X \sim$ TeV. The scalar partner
of $N$ (denoted $\tilde{N}_1$) is naturally the lightest SUSY particle as it
has no gauge interactions and plays the role of dark matter. $\tilde{N}_1$
annihilates into quarks efficiently in the early universe via the exchange of
the fermionic $\tilde{X}$ field. The model is experimentally testable in (i)
neutron--antineutron oscillations with a transition time estimated to be around
$10^{10}$ sec, (ii) discovery of colored particles $X$ at LHC with mass of
order TeV, and (iii) direct dark matter detection with a predicted cross
section in the observable range.


title: Some Problems of Diffraction at High Energies

abstract:
  An interplay of perturbative and nonperturbative effects in pomeron, odderon
and reggeons dynamics is discussed. It is pointed out that experimental data on
pion charge exchange reaction at high energies indicate to a dominance of the
nonperturbative string-like dynamics up to rather large momentum transfer. Role
of shadowing effects related to triple-pomeron interactions is investigated.


title:
String Inspired Singlet Extensions of the Minimal Supersymmetric
  Standard Model

abstract:
  The only allowed Higgs superpotential term at stringy tree level in the
string derived Singlet Extensions of the Minimal Supersymmetric Standard Model
(SEMSSM) is h S H_d H_u, which leads to an additional global U(1) symmetry in
the Higgs potential. We propose the string inspired SEMSSM where the global
U(1) symmetry is broken by the additional superpotential terms or supersymmetry
breaking soft terms that can be obtained naturally due to the instanton effects
or anomalous U(1)_A gauge symmetry. In these models, we can solve the \mu
problem and the fine-tuning problem for the lightest CP-even Higgs boson mass
in the MSSM, generate the baryon asymmetry via electroweak baryogenesis, and
predict the new Higgs physics which can be tested at the LHC and ILC.


title:
Impact of CLAS and COMPASS data on Polarized Parton Densities and Higher
  Twist

abstract:
  We have re-analyzed the world data on inclusive polarized DIS including the
very precise CLAS proton and deuteron data, as well as the latest COMPASS data
on the asymmetry $A_1^d$, and have studied the impact of these data on
polarized parton densities and higher twist effects. We demonstrate that the
low $Q^2$ CLAS data improve essentially our knowledge of higher twist
corrections to the spin structure function $g_1$, while the large $Q^2$ COMPASS
data influence mainly the strange quark density. In our new analysis we find
that a negative polarized gluon density, or one that changes sign as a function
of x, cannot be ruled out from the present DIS data.


title: SU(3) Family Gauge Symmetry and the Axion

abstract:
  We analyze the structure of a recently proposed effective field theory (EFT)
for the generation of quark and lepton mass ratios and mixing angles, based on
the spontaneous breaking of an SU(3) family gauge symmetry at a high scale F.
We classify the Yukawa operators necessary to seed the masses, making use of
the continuous global symmetries that they preserve. One global U(1), in
addition to baryon number and electroweak hypercharge, remains unbroken after
the inclusion of all operators required by standard-model-fermion
phenomenology. An associated vacuum symmetry insures the vanishing of the
first-family quark and charged-lepton masses in the absence of the family gauge
interaction. If this U(1) symmetry is taken to be exact in the EFT, broken
explicitly by only the QCD-induced anomaly, and if the breaking scale F is
taken to lie in the range 10 to 9 - 10 to 12 GeV, then the associated
Nambu-Goldstone boson is a potential QCD axion.


title: Out of equilibrium quantum field dynamics in external fields

abstract:
  The quantum dynamics of the symmetry broken \lambda (\Phi^2)^2 scalar field
theory in the presence of an homogeneous external field is investigated in the
large N limit. We consider an initial thermal state of temperature T for a
constant external field J. A subsequent sign flip of the external field, J to
-J, gives rise to an out of equilibrium nonperturbative quantum field dynamics.
We review here the dynamics for the symmetry broken lambda(\Phi^2)^2 scalar N
component field theory in the large N limit, with particular stress in the
comparison between the results when the initial temperature is zero and when it
is finite. The presence of a finite temperature modifies the dynamical
effective potential for the expectation value, and also makes that the
transition between the two regimes of the early dynamics occurs for lower
values of the external field. The two regimes are characterized by the presence
or absence of a temporal trapping close to the metastable equilibrium position
of the potential. In the cases when the trapping occurs it is shorter for
larger initial temperatures.


title: Phase diagram of neutron star quark matter in nonlocal chiral models

abstract:
  We analyze the phase diagram of two-flavor quark matter under neutron star
constraints for a nonlocal covariant quark model within the mean field
approximation. Applications to cold compact stars are discussed.


title: Gluon dominance model and cluster production

abstract:
  Gluon dominance model (GDM) studies multiparticle production in lepton and
hadron processes. It is based on the QCD and phenomenological scheme of
hadronization. The model describes well multiplicity distributions and their
moments. It has revealed an active role of gluons in multiparticle production,
it also has confirmed the fragmentation mechanism of hadronization in e+e-
annihilation and its change to recombination mechanism in hadron and nucleus
interactions. The GDM explains the shoulder structure of multiplicity
distributions. The agreement with Au+Au peripheral collisions data for
hadron-pion ratio has been also obtained with this model. Development of GDM
allows one to research the multiplicity behavior of ppbar annihilation at tens
of GeV. The mechanism of soft photons production and estimates of their
emission region have been offered. The experimental data (project
"Thermalization", U-70, IHEP) have confirmed a cluster nature of multiparticle
production.


title:
Harmless R-parity violation from Z_{12-I} compactification of E_8 X E_8'
  heterotic string

abstract:
  In a recent $\Z_{12-I}$ orbifold model, an approximate $Z_2$ symmetry which
forbids the baryon number violating operators up to sufficiently high orders is
found. The dimension-4 $\Delta B\ne 0$ operators of the MSSM fields occur at
dimension 10. The effective dimension-5 $\Delta B\ne 0$ operators derived from
these are harmless if some VEVs of neutral singlets are O(1/10) times the
string scale. The main reason for forbidding these $\Delta B\ne 0$ operators up
to such a high order is the large order N=12 of $\Z_N$ since the $H$-momentum
rule is $(-1,1,1)$ mod (12, 3, 12). For a lower order $N<12$, the $\Delta B\ne
0$ operators would appear at lower dimensions.


title: Charge density of a positively charged vector boson may be negative

abstract:
  The charge density of vector particles, for example W, may change sign. The
effect manifests itself even for a free propagation; when the energy of the
W-boson is higher than sqrt{2}m and the standing-wave is considered the charge
density oscillates in space. The charge density of W also changes sign in close
vicinity of a Coulomb center. The dependence of this effect on the g-factor for
an arbitrary vector boson, for example rho-meson, is discussed. An origin of
this surprising effect is traced to the electric quadrupole moment and
spin-orbit interaction of vector particles. Their contributions to the current
have a polarization nature. The charge density of this current, rho = -\nabla
\cdot P, where P is an effective polarization vector that depends on the
quadrupole moment and spin-orbit interaction, oscillates in space, producing
zero contribution to the total charge.


title: The Standard-Model Extension and Tests of Relativity

abstract:
  The Standard-Model Extension, or SME, is a general framework for the study of
Lorentz violation in physics. A broad variety of experiments is able to access
the SME coefficient space. This proceedings briefly summarizes theory and
experiments aimed at testing Special Relativity by measuring these
coefficients.


title: Non-minimal Split Supersymmetry

abstract:
  We present an extension of the minimal split supersymmetry model, which is
capable of explaining the baryon asymmetry of the Universe. Instead of MSSM we
start from NMSSM and split its spectrum in such a way that the low energy
theory contains neutral particles, in addition to the content of minimal split
supersymmetry. They trigger the strongly first order electroweak phase
transition (EWPT) and provide an additional source of CP-violation. In this
model, we estimate the amount of the baryon asymmetry produced during EWPT,
using WKB approximation for CP-violating sources in diffusion equations. We
also examine the contribution of CP-violating interactions to the electron and
neutron electric dipole moments and estimate the production of the neutralino
dark matter. We find that both phenomenological and cosmological requirements
can be fulfilled in this model.


title:
Heavy neutral MSSM Higgs Bosons at the PLC - a comparison of two
  analyses

abstract:
  Measurement of the heavy neutral MSSM Higgs bosons H and A production in the
process gamma gamma --> A, H --> b anti-b at the Photon Linear Collider has
been considered in two independent analyses for the parameter range
corresponding to the so-called "LHC wedge". Significantly different conclusions
were obtained; signal to background ratio 36 vs 2. Here assumptions and results
of these two analyses are compared. We have found that differences in the final
results are mainly due to different assumptions on gamma-gamma-luminosity
spectra, jet definitions and selection cuts.


title:
Lepton Flavor Violation in SUSY GUT Model with Non-universal Sfermion
  Masses

abstract:
  We analyze lepton flavor violating $\tau \to \mu \gamma$ and $\mu \to e
\gamma$ processes in SUSY GUT model in which sfermions have special mass
spectrum. It is assumed that only third generation sfermions which are
contained in ${\bf 10}(Q, U^c, E^c)$ of SU(5) can have a different mass from
the others. This mass spectrum is led from $E_6$ GUT model with horizontal
symmetries. It is shown that branching ratios of $\tau \to \mu \gamma$ and $\mu
\to e \gamma$ depend strongly on a right-handed stau mass. The weak scale
stability requires the light stau, so large decay rates can be expected in this
scenario. When stau is around 150 GeV and $\tan \beta \sim 10$, the branching
ratios can be larger than $Br(\tau \to \mu \gamma) \simeq 10^{-8}$ and $Br(\mu
\to e \gamma) \simeq 5\times 10^{-12}$, which are within reach of future
experiments. In addition, this model has an interesting feature that the final
state charged lepton tends to have the right-handed chirality.


title: Marriage between the baryonic and dark matters

abstract:
  The baryonic and dark matter fractions in the universe can be both generated
by the same baryogenesis mechanism, simultaneously and with comparable amounts,
if dark matter is constituted by the baryons of the mirror world, a parallel
hidden sector with the same (or similar) microphysics as that of the observable
world.


title: Cavity tests of parity-odd Lorentz violations in electrodynamics

abstract:
  Electromagnetic resonant cavities form the basis for a number modern tests of
Lorentz invariance. The geometry of most of these experiments implies
unsuppressed sensitivities to parity-even Lorentz violations only. Parity-odd
violations typically enter through suppressed boost effects, causing a
reduction in sensitivity by roughly four orders of magnitude. Here we discuss
possible techniques for achieving unsuppressed sensitivities to parity-odd
violations by using asymmetric resonators.


title: String Models of Glueball and Regge Trajectories

abstract:
  The closed relativistic string carrying two point-like masses is considered
as the model of a glueball with two constituent gluons. Here the gluon-gluon
interaction is simulated by a pair of strings. For this system exact solutions
of classical equations of motions are obtained. They describe rotational states
of the string resulting in the set of quasilinear Regge trajectories with
different behavior.


title:
Additional bounds on the pre Big--Bang--Nucleosynthesis Expansion by
  means of $\gamma$-rays from the Galactic Center

abstract:
  The possibility to use $\gamma$--ray data from the Galactic Center (GC) to
constrain the cosmological evolution of the Universe in a phase prior to
primordial nucleosyntesis, namely around the time of cold dark matter (CDM)
decoupling, is analyzed. The basic idea is that in a modified cosmological
scenario, where the Hubble expansion rate is enhanced with respect to the
standard case, the CDM decoupling is anticipated and the relic abundance of a
given dark matter (DM) candidate enhanced. This implies that the present amount
of CDM in the Universe may be explained by a Weakly Interacting Massive
Particle (WIMP) which possesses annihilation cross section (much) larger than
in standard cosmology. This enhanced annihilation implies larger fluxes of
indirect detection signals of CDM. We show that the HESS measurements can set
bounds for WIMPs heavier than a few hundreds of GeV, depending on the actual DM
halo profile. These results are complementary to those obtained in a previous
analysis based on cosmic antiprotons. For a Moore DM profile, $\gamma$--ray
data limit the maximal Hubble rate enhancement to be below a factor of 100.
Moreover, a WIMP heavier than 1 TeV is not compatible with a cosmological
scenario with enhanced expansion rate prior to Big Bang Nucleosynthesis (BBN).
Less steep DM profiles provide less stringent bounds, depending of the
cosmological scenario.


title: U-boson at BESIII

abstract:
  The $O$(MeV) spin-1 U-boson has been proposed to mediate the interaction
among electron-positron and $O$(MeV) dark matter, in order to account for the
511 keV $\gamma$-ray observation by SPI/INTEGRAL. In this paper the
observability of such kind of U-boson at BESIII is investigated through the
processes $e^+e^- \to U \gamma$ and $e^+e^- \to J/\Psi \to e^+e^- U$. We find
that BESIII and high luminosity B-factories have the comparable capacity to
detect such U-boson. If U-boson decays mainly into dark matter, i.e. invisibly,
BESIII can measure the coupling among U-boson and electron-positron $g_{eR}$
(see text) down to $O(10^{-5})$, and cover large parameter space which can
account for 511 keV $\gamma$-ray observation. On the other hand, provided that
U decays mainly into electron-positron, BESIII can detect $g_{eR}$ down to
$O(10^{-3})$, and it is hard to explore 511 keV
  $\gamma$-ray measurement allowed parameter space due to the irreducible QED
backgrounds.


title: Torsion Phenomenology at the LHC

abstract:
  We explore the potential of the CERN Large Hadron Collider (LHC) to test the
dynamical torsion parameters. The form of the torsion action can be established
from the requirements of consistency of effective quantum field theory. The
most phenomenologically relevant part of the torsion tensor is dual to a
massive axial vector field. This axial vector has geometric nature, that means
it does not belong to any representation of the gauge group of the SM extension
or GUT theory. At the same time, torsion should interact with all fermions,
that opens the way for the phenomenological applications.
  We demonstrate that LHC collider can establish unique constraints on the
interactions between fermions and torsion field considerably exceeding present
experimental lower bounds on the torsion couplings and its mass. It is also
shown how possible non-universal nature of torsion couplings due to the
renormalization group running between the Planck and TeV energy scales can be
tested via the combined analysis of Drell-Yan and $t\bar{t}$ production
processes.


title: Probing Low-x QCD With Very High Energy Prompt Muons

abstract:
  We explore the possibility of utilizing the prompt muon fluxes at very high
energies in order to discriminate various models/parametrizations of low-x QCD
behaviour of hadronic cross-sections relevant at such energies. We find that
the pair meter technique for measuring high energy prompt muons can be very
efficient in such an endeavor. As a by product, it allows to cleanly probe the
change in composition of the primary cosmic rays expected at high energies.


title: Penguin pollution estimates relevant for phi_2/alpha extraction

abstract:
  A review of methods to extract the standard CKM unitarity triangle angle
alpha is provided. The sizes of related theoretical errors are reviewed.


title:
Signature of heavy Majorana neutrinos at a linear collider: Enhanced
  charged Higgs pair production

abstract:
  A charged Higgs pair can be produced at an ee collider through a t-channel
exchange of a heavy neutrino (N) via e^+ e^- -> H^+ H^- and, if N is a Majorana
particle, also via the lepton number violating (LNV) like-sign reaction e^\pm
e^\pm \to H^\pm H^\pm. Assuming no a-priori relation between the effective
eNH^+ coupling (\xi) and light neutrino masses, we show that this interaction
vertex can give a striking enhancement to these charged Higgs pair production
processes. In particular, the LNV H^-H^- signal can probe N at the ILC in the
mass range 100 GeV < m_N < 10^4 TeV and with the effective mixing angle, \xi,
in the range 10^{-4} < \xi^2 < 10^{-8} - well within its perturbative unitarity
bound and the neutrinoless double beta decay (\beta\beta_{0\nu}) limit. The
lepton number conserving (LNC) e^+ e^- \to H^+ H^- mode can be sensitive to,
e.g., an O(10) TeV heavy Majorana neutrino at a 500 GeV International Linear
Collider (ILC), if \xi^2 > 0.001.


title: Transversity and Collins functions from SIDIS and e+e- data

abstract:
  A global analysis of the experimental data on azimuthal asymmetries in
semi-inclusive deep inelastic scattering (SIDIS), from the HERMES and COMPASS
Collaborations, and in e+e- --> h1 h2 X processes, from the BELLE
Collaboration, is performed. It results in the extraction of the Collins
fragmentation function and, for the first time, of the transversity
distribution function for u and d quarks. These turn out to have opposite signs
and to be sizably smaller than their positivity bounds. Predictions for the
azimuthal asymmetry A_{UT}^{sin(phi_h + phi_S)}, as will soon be measured at
JLab and COMPASS operating on a transversely polarized proton target, are then
presented.


title: Dark matter from late decays and the small-scale structure problems

abstract:
  The generation of dark matter in late decays of quasi-stable massive
particles has been proposed as a viable framework to address the excess of
power found in numerical N-body simulations for cold dark matter cosmologies.
We identify a convenient set of variables to illustrate which requirements need
to be satisfied in any generic particle physics model to address the small
scale problems and to fulfill other astrophysical constraints. As a result of
this model-independent analysis, we point out that meeting these requirements
in a completely natural way is inherently difficult. In particular, we
re-examine the role of gravitinos and Kaluza-Klein gravitons in this context
and find them disfavoured as a solution to the small-scale problems in case
they are DM candidates generated in the decay of thermally produced WIMPs. We
propose right-handed sneutrinos and right-handed Kaluza-Klein neutrinos as
alternatives. We find that they are viable dark matter candidates, but that
they can contribute to a solution of the small scale problems only in case the
associated Dirac neutrino mass term appears as a subdominant contribution in
the neutrino mass matrix.


title: Microscopic 8-quark study of the antikaon nucleon nucleon systems

abstract:
  We study the possibility to bind eight quarks in a molecular hadronic system
composed of two nucleons and an antikaon, with the quantum numbers of a
hexaquark flavour, in particular with strangeness -1, isospin 1/2, parity -,
baryonic number 2 and two possible spins, 0 or 1. These exotic hadrons are
motivated by the deuteron, a proton-neutron boundstate, and by the model of the
Lambda(1405) as an antikaon proton boundstate. We discuss the possible
production of this hadron in the experiments which are presently investigating
hot topics like the Theta+ pentaquark or the K- deeply bound in nuclei. The K-
N interactions and the coupling to other channels are computed microscopically
from a confining and chiral invariant quark model resulting in local plus
separable Gaussian potentials. The N N interactions used here are the state of
the art Nijmegen potentials. The binding energy and the decay rate of the K- N
and K- N N systems are computed with configuration space variational methods.
The only systems that bind with our microscopic interaction are the K- N in the
I=0 channel and the K- N N in the S=0 channel.


title: Radiative decays of bottomonia into charmonia and light mesons

abstract:
  In the framework of nonrelativistic QCD, we study the radiative decays of
bottomonia into charmonia, including $\Upsilon\to \chi_{cJ}\gamma$,
$\Upsilon\to \eta_c\gamma$, $\eta_b\to J/\psi\gamma$, and $\chi_{bJ}\to
J/\psi\gamma$. We give predictions for their branching ratios with numerical
calculations. E.g., we predict the branching ratio for $\eta_b\to J/\psi\gamma$
is about $1\times 10^{-7}$. As a phenomenological model study, we further
extend our calculation to the radiative decays of bottomonia into light mesons
by assuming the $f_2(1270)$, $f_2'(1525)$ and other light mesons to be
described by nonrelativistic $q\bar q ~(q=u,d,s)$ bound states with constituent
quark masses. The calculated branching ratios for $\Upsilon\to f_2(1270)\gamma$
and $\Upsilon\to f_2'(1525)\gamma$ are roughly consistent with the CLEO data.
Comparisons with radiative decays of charmonium into light mesons such as
$J/\psi\to f_2(1270)\gamma$ are also given. In all calculations the QED
contributions are taken into account and found to be significant in some
processes.


title:
Stuckelberg Axions and the Effective Action of Anomalous Abelian Models
  1. A unitarity analysis of the Higgs-axion mixing

abstract:
  We analyze the quantum consistency of anomalous abelian models and of their
effective field theories, rendered anomaly-free by a Wess-Zumino term, in the
case of multiple abelian symmetries. These models involve the combined
Higgs-Stuckelberg mechanism and predict a pseudoscalar axion-like field that
mixes with the goldstones of the ordinary Higgs sector. We focus our study on
the issue of unitarity of these models both before and after spontaneous
symmetry breaking and detail the set of Ward identities and the organization of
the loop expansion in the effective theory. The analysis is performed on simple
models where we show, in general, the emergence of new effective vertices
determined by certain anomalous interactions.


title: Gravitino and Axino SuperWIMPs

abstract:
  Gravitinos and axinos produced in the late decays of other supersymmetric
particles are well-motivated dark matter (DM) candidates, whose experimental
evidences are very distinctive and different from other standard candidates, as
thermal produced neutralinos in similar supersymmetric models. In particular,
charged sleptons could appear stable because of the length of its lifetime. The
direct production of such particles at both the Large Hadron Collider (LHC) and
a future International Linear Collider (ILC) can give not only a clear
signature of supersymmetry but also the first non-gravitational evidence of
dark matter.