title:
Measurements of the top-antitop production cross section at the Tevatron
  Run II CDF experiment using b-tagging

abstract:
  We present measurements of the top-antitop production cross section in
b-tagged lepton + jets events from proton-antiproton collisions at 1.96 TeV
using the CDF detector at Fermilab. B-jets are tagged with either a secondary
vertex algorithm, or a soft lepton tagger that identifies muons from B hadron
semileptonic decays. With Tevatron Run II data, we estimate the top-antitop
signal fraction in two different ways: by estimating the various background
contributions, and by fitting directly the leading jet transverse energy
spectrum for the signal and background contributions. A subset of the sample
with two secondary vertex tagged jets yields a production cross section
consistent with the inclusive measurements. Results are consistent with a
Standard Model top-antitop signal and current measurements of the top quark
mass.


title:
Inclusive and exclusive diffraction: overview of the experimental
  presentations at Diffraction2004

abstract: Some issues in inclusive and exclusive diffractive processes are discussed.


title: Two-hadron single target-spin asymmetries: first measurement by HERMES

abstract:
  Single target-spin asymmetries in semi-inclusive two-pion production were
measured for the first time by the HERMES experiment, using a longitudinally
polarized deuterium target. These asymmetries relate to the unknown
transversity distribution function $h_1(x)$ through, also unknown, interference
fragmentation functions. The presented results are compared with a model for
the dependence of one of these interference fragmentation functions on the
invariant mass of the pion pair.


title: CUORE: A Cryogenic Underground Observatory for Rare Events

abstract:
  Recently, neutrino oscillation experiments have unequivocally demonstrated
that neutrinos have mass and mix. These experiments have yielded valuable
information on the mixing angles and on the mass differences of the three
eigenstates but cannot determine the scale of the neutrino mass, which is fixed
by the lightest neutrino mass eigenvalue. This can only be directly determined
by kinematic measurementsor by the observation and measurement of the
neutrinoless double-beta decay (NDBD) half-life. The CUORE experiment is
designed with a sensitivity capable of probing the range indicated by
oscillation experiments. It consists of an array of 988, 750 g, TeO2 bolometers
operating at 8 to 10 mK and arranged in a cylindrical geometry of 19 towers
hanging on the bottom of the mixing chamber of a dilution refrigerator. Each
tower consists of 13 4-detector modules for a total of 52 bolometers. One such
tower has been successfully constructed and is now operated in the Gran Sasso
Laboratory as a test experiment, and also as an independent NDBD experiment
called CUORICINO. In fact, the 3 year half-life sensitivity of CUORICINO for
NDBD decay of 130Te is 6.1E24 years. Thus far the CUORICINO data demonstrate
the technical feasibility of the expanded CUORE array while showing what and
where the sources of background are and how to reduce them. A background
reduction to 0.01 counts/keV/kg/y in the NDBD energy region is therefore
possible. This would allow the full CUORE array to achieve a 5-year sensitivity
of the order of 30 meV on the effective neutrino mass. Another order of
magnitude reduction (corresponding to a sensitivity of about 15 meV) will
present a real challenge, but is also possible. The CUORE experiment will be
installed in the Laboratori Nazionali del Gran Sasso (LNGS) in Assergi, Italy.


title: Can a 3+2 Oscillation Model Explain the NuTeV Electroweak Results?

abstract:
  The weak mixing angle result from NuTeV falls three standard deviations above
the value determined by global electroweak fits. It has been suggested that one
possible explanation for this result could be the oscillation of electron
neutrinos in the NuTeV beam to sterile neutrinos. This article examines several
cases of masses and mixings for 3+2 neutrino oscillation models which fit the
current oscillation data at 99% CL. We conclude that electron to sterile
neutrino oscillations can account for only up to a third of a standard
deviation between the NuTeV determination of the weak mixing angle and the
standard model.


title: Results and Future Prospects for Muon (g-2)

abstract:
  Spin physics had its beginnings in the famous experiments of Stern and
Gerlach, which eventually resulted in the postulation of spin by Goudsmit and
Uhlenbeck. The Stern-Gerlach experiment told us that the $g$-value of the
electron was 2, but we now know that because of radiative corrections, the
$g$-value of the leptons is slightly greater than 2, the lowest-order
contribution being $\alpha/\pi$, where $\alpha$ is the fine-structure constant.
Measurements of the magnetic dipole moments of the electron and muon have
played a major role in our understanding of QED and of the standard model. In
this talk I discuss the progress on measurements and theory of the magnetic
dipole moment of the muon.


title: Observation of B0bar --> D0 eta' and B0bar --> D*0 eta'

abstract:
  We report the observation of B0bar --> D0 eta' and the first observation of
B0bar --> D*0 eta', using 140 fb-1 of data collected at the Upsilon(4S)
resonance with the Belle detector at the KEKB asymmetric energy e+ e- collider.
We find the branching fractions to be B(B0bar --> D0 eta') = [ 1.14 +-
0.20(stat) +0.10-0.13(syst)] x 10^-4 and B(B0bar --> D*0 eta') = [ 1.21 +-
0.34(stat) +- 0.22(syst)] x 10^-4 with significances including systematic
uncertainty of 8.9 and 5.3 standard deviations, respectively.


title: Evidence for the Decay Sigma+ -> p mu+ mu-

abstract:
  We report the first evidence for the decay Sigma+ -> p mu+ mu- from data
taken by the HyperCP experiment(E871) at Fermilab. Based on three observed
events, the branching ratio is B(Sigma+ -> p,mu+,mu-) = [8.6 +6.6,-5.4(stat)
+/-5.5(syst)] x 10**-8. The narrow range of dimuon masses may indicate that the
decay proceeds via a neutral intermediate state, Sigma+ -> p P0, P0 -> mu+ mu-,
with a P0 mass of 214.3 +/- 0.5 MeV/c**2 and branching ratio B(Sigma+ -> p P0;
P0 -> mu+ mu-) = [3.1 +2.4,-1.(stat) +/-1.5(syst)] x 10**-8.


title: Search for X(3872) in gamma gamma Fusion and ISR at CLEO

abstract:
  We report on a search for the X(3872) state using 15.1 fb^{-1} of e+ e-
annihilation data taken with the CLEO III detector in the sqrt{s} = 9.46-11.30
GeV region. Separate searches for the production of X(3872) in untagged gamma
gamma fusion and e+ e- annihilation following initial state radiation are made
by taking advantage of the unique correlation of J/psi -> l+ l- in X(3872)
decay into J/psi pi+ pi-. No signals are observed in either case, and 90%
confidence upper limits are established as (2J+1)Gamma_{gammagamma}(X(3872))B(X
-> J/psi pi+ pi-) < 12.9 eV and Gamma_{ee}(X(3872))B(X -> J/psi pi+ pi-) < 8.3
eV.


title: Rare Kaon Decays - a review of results

abstract:
  Recent results and future prospects of rare kaon-decay experiments at KEK,
BNL, CERN and FNAL are reviewed. Topics include lepton flavor violation,
T-violating transverse muon polarization in K+{mu3}, exotic decays, K0 -> pi0
ell+ ell-, and K -> pi nu nubar.


title: Strange particle production in $p+p$ collisions at $\sqrt{s}$= 200 GeV

abstract:
  We present measurements of the transverse momentum spectra, yield and <pT>
systematics for K0short, Lambda and Anti-Lambda in $p+p$ collisions at
sqrt{s}=200 GeV. We show a dependence of the <pT> with event multiplicity and
infer that this is consistent with a mini-jet dominated particle production
mechanism. These observations are compared to available data from p+bar{p}
experiments as well as to pQCD theoretical predictions.


title: Workshop Summary: Experiment

abstract:
  A summary of experimental results from the Pentaquark 2004 Workshop held at
the SPring-8 facility in Japan is given. New results from the LEPS
collaboration are highlighted, and older results are reviewed. Non-observations
are also discussed in light of theoretical estimates of possible $\Theta^+$
production mechanisms. The problem of the narrow width and the parity of the
$\Theta^+$ are explored and point to future experimental work that is needed.


title: $\Lambda$ and $K^0_s$ Production in pC Collisions at 10 Gev/c

abstract:
  The experimental data from the 2m propane bubble chamber have been analyzed
for pC$\to \Lambda(K^0_s)X$ reactions at 10 GeV/c.
  The estimation of experimental inclusive cross sections for $\Lambda$ and
$K^0_s$ production in the p$^{12}C$ collision is equal to $\sigma_{\Lambda}$=
13.3$\pm$1.7 mb and $\sigma_{K^0_s}$= 3.8$\pm$0.6 mb, respectively.
  The measured $\Lambda /\pi^+$ ratio from pC reaction is equal to
(5.3$\pm0.8)*10^{-2}$. The experimental $\Lambda /\pi^+$ ratio in the pC
reaction is approximately two times larger than the
  $\Lambda /\pi^+$ ratio from pp reactions or from simulated pC reactions by
FRITIOF model for the same energy. The $\Lambda /\pi^+$ ratio in interaction
C+C at momentum 10 Gev/c is four times larger than the $\Lambda/\pi^+$ ratio
from p+p reactions at the same energy.


title:
The antinucleon-nucleon interaction at low energy : annihilation
  dynamics

abstract:
  The general properties of antiproton-proton annihilation at rest are
presented, with special focus on the two-meson final states. The data exhibit
remarkable dynamical selection rules : some allowed annihilation modes are
suppressed by one order of magnitude with respect to modes of comparable
phase-space. Various phenomenological analyses are reviewed, based on
microscopic quark dynamics or symmetry considerations. The role of initial- and
final-state interaction is also examined.


title:
Search for ZZ and ZW Production in ppbar Collisions at sqrt(s) = 1.96
  TeV

abstract:
  We present a search for ZZ and ZW vector boson pair production in ppbar
collisions at sqrt(s) = 1.96 TeV using the leptonic decay channels ZZ --> ll nu
nu, ZZ --> l l l' l' and ZW --> l l l' nu. In a data sample corresponding to an
integrated luminosity of 194 pb-1 collected with the Collider Detector at
Fermilab, 3 candidate events are found with an expected background of 1.0 +/-
0.2 events. We set a 95% confidence level upper limit of 15.2 pb on the cross
section for ZZ plus ZW production, compared to the standard model prediction of
5.0 +/- 0.4 pb.


title: New Results From CLEO and BES

abstract:
  Latest experimental results from BES in the charmonium mass region, and those
from CLEO in the bottomonium and charmonium spectroscopy are reviewed.


title:
Measurement of the Forward-Backward Charge Asymmetry from W --> e nu
  Production in p anti-p Collisions at s**(1/2) = 1.96 TeV

abstract:
  We report a measurement of the forward-backward charge asymmetry of electrons
from W boson decays in p anti-p collisions at s**(1/2) = 1.96 TeV using a data
sample of 170 pb-1 collected by the Collider Detector at Fermilab. The
asymmetry is measured as a function of electron rapidity and transverse energy
and provides new input on the momentum fraction dependence of the u and d quark
parton distribution within the proton.


title:
The LUCIAE model predictions on the light vector meson production in
  proton-proton, proton-nucleus and nucleus-nucleus collisions at 158 A GeV

abstract:
  The LUCIAE model predictions are compared with experimental data on light
vector meson ($\rho,\omega,\phi$) production in pp, p+Pb and Pb+Pb collisions
at 158 A GeV. The model reproduces the general trends of the data, but fails in
describing the yield of high-$p_T$ vector mesons in the central Pb+Pb
collisions. Predictions for In+In and p+A (A varying from Be to U) collisions
at 158 A GeV are also presented.


title: Azimuthal Structures of Produced Particles in Heavy Ion Interactions

abstract:
  The angular substructures of particles produced in 208Pb at 158 A GeV/c and
197Au at 11.6 A GeV/c induced interactions with Ag(Br) nuclei in emulsion
detector have been investigated. Nonstatistical ring-like substructures of
produced particles in azimuthal plane of a collision have been found and their
parameters have been determined.


title:
The Search for eta(1440) --> K^0_S K^pm \pi^mp in Two-Photon Fusion at
  CLEO

abstract:
  We analyze 13.8 \rm fb^{-1} of the integrated e^+e^- luminosity collected at
10.6 GeV center-of-mass energy with the CLEO II and CLEO II.V detectors to
study exclusive two-photon production of hadrons with masses below 1.7{\rm \
GeV/c^2} decaying into the K^0_S K^\pm \pi^\mp final state. We observe two
statistically significant enhancements in the \eta(1440) mass region. These
enhancements have large transverse momentum which rules them out as being due
to pseudoscalar resonances but is consistent with the production of
axial-vector mesons. We use tagged two-photon events to study the properties of
the observed enhancements and associate them with the production of f_1(1285)
and f_1(1420). Our non-observation of \eta(1440) is inconsistent by more than
two standard deviations with the first observation of this resonance in
two-photon collisions by the L3 experiment. We present our estimates for 90%
confidence level upper limits on the products of two-photon partial widths of
pseudoscalar hadrons and their branching fractions into
K^0_S(\pi^+\pi^-)K^\pm\pi^\mp.


title: Vector Boson Fusion Higgs Production at the LHC - Mass Variables

abstract:
  There exist substantial backgrounds to the vector boson fusion production of
Higgs at the LHC. Mass variables are studied which may alleviate the need to
assume a spin zero WW resonance in order to achieve a sufficient signal to
noise ratio in the two jet plus two lepton and missing energy final state.


title: The Charm Pentaquark and Kinematic Reflection

abstract:
  A simple example of the kinematic reflection in the $D^*p$ system at about
3.1 GeV/c^2 is given.


title:
Search for CPT Violation with the FOCUS Experiment and Measurement of
  $\Lambda_b$ lifetime in the decay $\Lambda_b\to J/\psi \Lambda$ with the D\O
  Experiment

abstract:
  We have performed a search for CPT violation in neutral charm meson
oscillations using data from the FOCUS Experiment. While flavor mixing in the
charm sector is predicted to be small by the Standard Model, it is still
possible to investigate CPT violation through a study of the proper time
dependence of a CPT asymmetry in right-sign decay rates for $D^0\to K^-\pi^+$
and $\d0b\to K^+\pi^-$. This asymmetry is related to the CPT violating complex
parameter $\xi$ and the mixing parameters $x$ and $y$: $A_{CPT}\propto{\rm Re}
\xi y-{\rm Im} \xi x$. Our 95% confidence level limit is $-0.0068<{\rm Re} \xi
y-{\rm Im} \xi x<0.0234$. Within the framework of the Standard Model Extension
incorporating general CPT violation, we also find 95% confidence level limits
for the expressions involving coefficients of Lorentz violation.
  We present measurements of the \lb lifetime in the exclusive decay channel
\lbdec with $J/\psi \to \mu^+ \mu^-$ and $\Lambda \to p \pi^-$, the $B^0$
lifetime in the decay \bddecks with $J/\psi \to mu^+ \mu^-$ and $K^0_{S} \to
\pi^+ \pi^-$, and the ratio of these lifetimes. The analysis is based on
approximately 225 pb$^{-1}$ of data recorded with the D{\O}detector in $p
bar{p}$ collisions at $\sqrt{s} =1.96$ TeV. The \lb lifetime is determined to
be $\tau(\Lambda^0_b) = 1.36 \pm 0.3 ps$, the $B^0$ lifetime $\tau(\Lambda^0_b)
= 1.43 \pm 0.12 ps$, and the ratio $\fr
ac{\tau(\Lambda_b)}{\tau(B_d)}=0.95\pm0.22$. In contrast with previous
measurements using semileptonic decays, this is the first determination of the
\lb lifetime based on a fully reconstructed decay channel.


title:
Search for Light Gravitinos in Events with Photons and Missing
  Transverse Momentum at HERA

abstract:
  A search for gravitinos produced in ep collisions is performed using the H1
detector at HERA. The data were taken at a centre-of-mass energy of 319 GeV and
correspond to an integrated luminosity of 64.3 pb^{-1} for e^+p collisions and
13.5 pb^{-1} for e^-p collisions. If R-parity is not conserved, the t-channel
exchange of a selectron can produce a neutralino, which, in models where the
gravitino is the lightest supersymmetric particle, subsequently decays into a
photon and a light gravitino. The resulting event signature, which involves an
isolated photon, a jet and missing transverse energy, is analysed for the first
time at HERA. No deviation from the Standard Model is found. Exclusion limits
on the cross section and on R-parity-violating Yukawa couplings are derived in
a Gauge Mediated Supersymmetry Breaking scenario. The results are independent
of the squark sector. Neutralinos and supersymmetric partners of the
left-handed electron with masses up to 112 GeV and 164 GeV, respectively, can
be ruled out at the 95% confidence level for R-parity-violating couplings
lambda' equal to 1.


title: First measurements of Collins and Sivers asymmetries at COMPASS

abstract:
  COMPASS is a fixed-target experiment on the SPS M2 beamline at CERN. Its LiD
target can be polarised both longitudinally and transversally with respect to
the longitudinally polarised 160 GeV/c muon beam. Approximately 20% of the
beam-time in 2002, 2003 and 2004 was spent in the transverse configuration,
allowing the first measurement of both the Collins and Sivers asymmetries on a
deuterium target. First results from the the transverse data of the COMPASS run
in 2002 are reported here.


title: Lagrangian Density for the Vacuum

abstract:
  In this paper, the Lagrangian density for the vacuum is mainly discussed,
meanwhile, the matter field, the modified Lorentz transformation relations and
the reasons for the invariance of the velocity of light in the vacuum are also
discussed.


title: Search for an Invisibly-Decaying Higgs Boson at LEP

abstract:
  A search for a Higgs boson produced in e^+e^- collisions in association with
a Z boson and decaying into invisible particles is performed. Data collected at
LEP with the L3 detector at centre-of-mass energies from 189 GeV to 209 GeV are
used, corresponding to an integrated luminosity of 0.63/fb. Events with
hadrons, electrons or muons with visible masses compatible with a Z boson and
missing energy and momentum are selected. They are consistent with the Standard
Model expectations. A lower limit of 112.3 GeV is set at 95% confidence level
on the mass of the invisibly-decaying Higgs boson in the hypothesis that its
production cross section equals that of the Standard Model Higgs boson.
Relaxing this hypothesis, upper limits on the production cross section are
derived.


title: A New Limit on the Neutrinoless DBD of 130Te

abstract:
  We report the present results of CUORICINO a cryogenic experiment on
neutrinoless double beta decay (DBD) of 130Te consisting of an array of 62
crystals of TeO2 with a total active mass of 40.7 kg. The array is framed
inside of a dilution refrigerator, heavily shielded against environmental
radioactivity and high-energy neutrons, and operated at a temperature of ~8 mK
in the Gran Sasso Underground Laboratory. Temperature pulses induced by
particle interacting in the crystals are recorded and measured by means of
Neutron Transmutation Doped thermistors. The gain of each bolometer is
stabilized with voltage pulses developed by a high stability pulse generator
across heater resistors put in thermal contact with the absorber.
  The calibration is performed by means of two thoriated wires routinely
inserted in the set-up. No evidence for a peak indicating neutrinoless DBD of
130Te is detected and a 90% C.L. lower limit of 1.8E24 years is set for the
lifetime of this process. Taking largely into account the uncertainties in the
theoretical values of nuclear matrix elements, this implies an upper boud on
the effective mass of the electron neutrino ranging from 0.2 to 1.1 eV. This
sensitivity is similar to those of the 76Ge experiments.


title: Measurements of Collins and Sivers asymmetries at COMPASS

abstract:
  COMPASS is a fixed target experiment presently running at CERN. In 2002,
2003, and 2004 the experiment used a 160 GeV polarized muon beam coming from
SPS and scattered off a $^6$LiD target. The nucleons in the target can be
polarized either longitudinally or transversely with respect to the muon beam
and 20% of the running time has been devoted to transverse polarization. From
the transverse polarization data collected in 2002, which correspond to a total
integrated luminosity of about 200 pb$^{-1}$, the Collins and the Sivers
asymmetries have been determined separately and the preliminary results are
presented here.


title:
Study of Spin and Decay-Plane Correlations of W Bosons in the e+e- ->
  W+W- Process at LEP

abstract:
  Data collected at LEP at centre-of-mass energies \sqrt(s) = 189 - 209 GeV are
used to study correlations of the spin of W bosons using e+e- -> W+W- -> lnqq~
events. Spin correlations are favoured by data, and found to agree with the
Standard Model predictions. In addition, correlations between the W-boson decay
planes are studied in e+e- -> W+W- -> lnqq~ and e+e- -> W+W- -> qq~qq~ events.
Decay-plane correlations, consistent with zero and with the Standard Model
predictions, are measured.


title:
Branching Fraction, Polarization and CP-Violating Asymmetries in B0 ->
  D*+ D*- Decays

abstract:
  We present measurements of the branching fraction, the polarization
parameters and CP-violating asymmetries in B0 -> D*+ D*- decays using a 140/fb
data sample collected at the Upsilon(4S) resonance with the Belle detector at
the KEKB energy-asymmetric e+e- collider. We obtain B(B0 -> D*+ D*-) = [0.81 +-
0.08(stat) +- 0.11(syst)] x 10^{-3}, R\perp = 0.19 +- 0.08(stat) +- 0.01(syst),
R0 = 0.57 +- 0.08(stat) +- 0.02(syst), S = -0.75 +- 0.56(stat) +- 0.12(syst)
and A = -0.26 +- 0.26(stat) +- 0.06(syst). Consistency with Standard Model
expectations is also discussed.


title: Search for the Radiative Decay B --> phi gamma

abstract:
  We perform a search for the exclusive radiative decay B0 --> phi gamma, which
is dominated by b d annihilation, in a sample of 124 million BB events
collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage
ring at SLAC. No significant signal is seen. We set an upper limit on the
branching fraction BR(B0 --> phi gamma < 8.5x10-7) at the 90% confidence level.


title:
A Direct Search for Stable Magnetic Monopoles Produced in
  Positron-Proton Collisions at HERA

abstract:
  A direct search has been made for magnetic monopoles produced in e^+ p
collisions at a centre of mass energy of 300 GeV at HERA. The beam pipe
surrounding the interaction region in 1995-1997 was investigated using a SQUID
magnetometer to look for stopped magnetic monopoles. During this time an
integrated luminosity of 62 pb^{-1} was delivered. No magnetic monopoles were
observed and charge and mass dependent upper limits on the e^+ p production
cross section are set.


title: Physics Results from COMPASS

abstract:
  The COMPASS Experiment at the CERN SPS has a broad physics program focused on
the nucleon spin structure and on hadron spectroscopy, using muon and hadron
beams. Main objectives for the spin program with the muon beam are the direct
measurement of the gluon contribution to the spin of the nucleon,
semi-inclusive measurements, and the measurement of the transverse spin
distribution $\Delta_T q$. The COMPASS apparatus consists of a two-stage large
acceptance spectrometer designed for high data rates and equipped with
high-resolution tracking, particle identification and electromagnetic and
hadronic calorimetry. The data taking is ongoing since 2002 and till now was
mainly devoted to the spin programme using a 160 GeV$/c$ naturally polarized,
$\mu^+$ beam and a polarized \mrf{^6LiD} target. First physics results from the
2002 and 2003 runs are presented.


title:
Generalized Parton Distributions and Deep Exclusive Reactions: Present
  Program at JLab

abstract:
  We review briefly the physical concept of generalized parton distributions
and the experimental challenges associated with the corresponding measurements
of deep exclusive reactions.The first data obtained at Jefferson Lab for
exclusive photon (DVCS) and vector meson (DVMP) electroproduction above the
resonance-excitation region are described . Two upcoming dedicated DVCS
experiments are presented in some detail.


title: Study of tau Decays to Four-Hadron Final States with Kaons

abstract:
  The tau decays to four hadrons have been studied with the CLEO III detector
at the Cornell Electron Storage Ring (CESR) using (7.56 +- 0.15) fb^{-1} of
data collected near the Y(4S) resonance. We present the first statistically
significant measurements of B(tau- -> K- pi+pi- pi0 nu, excluding K^0) = (7.4
+- 0.8 +- 1.1) x 10^{-4} and B(tau--> K- K+ pi- pi0 nu) = (5.5 +- 1.4 +- 1.2) x
10^{-5}, including the first observation of the decay, tau- -> K- omega nu,
with branching fraction (4.1 +- 0.6 +- 0.7) x 10^{-4}. We also publish the
first upper limit for B(tau- -> K- K+ K- pi0 nu) < 4.8 (6.1) x 10^{-6} at 90%
(95%) confidence level (C.L.).


title:
A method for measurement of the top quark mass using the mean decay
  length of b hadrons in ttbar events

abstract:
  We present a new method for the experimental determination of the top quark
mass that is based upon the mean distance of travel of b hadrons in top quark
events. The dominant systematic uncertainties of this method are not correlated
with those of other methods, but alarge number of events is required to achieve
small statistical uncertainty. Large ttbar event samples are expected from Run
II of the Fermilab Tevatron and the CERN Large Hadron Collider (LHC). We show
that by the end of Run II, a single experiment at the Tevatron could achieve a
top quark mass uncertainty of ~5 GeV/c^2 by this method alone. At the CERN LHC,
this method could be comparable to all others methods, which are expected to
achieve an uncertainty of ~1.5 GeV/c^2 per experiment. This new method would
provide a useful cross-check to other methods, and could be combined with them
to obtain a substantially reduced overall uncertainty.


title: The QCD Spin Structure of Nucleons (Summary of Parallel Session 2)

abstract:
  This paper attempts to summarise the highlights of the talks presented in
Parallel Session II of the SPIN 2004 Symposium dedicated to the QCD spin
structure of nucleons. Emphasis is put on new data and theoretical
developments.


title:
First observation of spin dichroism with deuterons up to 20 MeV in a
  carbon target

abstract:
  The first observation of the phenomenom of deuteron spin dichroism in the
energy region of 6-20 MeV is described. Experimental values of this effect for
deuterons after passage of an unpolarized carbon target are reported.


title:
Measurement of B(D+ -> mu+ nu) and the pseudoscalar decay constant f_D
  at CLEO

abstract:
  The analysis of 60 1/pb data collected on the psi(3770) resonance with the
CLEO-c detector has produced the first statistically significant signal for D+
-> mu+ nu decay and led to the measurement of the decay branching fraction B(D+
-> mu+ nu) = (3.5 +- 1.4 +- 0.6) x 10-4 and the pseudoscalar decay constant f_D
= (202 +- 41 +- 17) MeV.


title:
Study of the gluon polarization in the proton with a silicon vertex
  upgrade at RHIC/PHENIX

abstract:
  PHENIX has a well defined program for measuring the polarized gluon
distribution in the nucleon. We measure the gluon polarization in the proton
with polarized $p$-$p$ collisions at PHENIX. The measurements of gluon
polarization $via$ the direct-photon production and the heavy-flavor production
can be significantly improved by the silicon vertex tracker upgrade. We have
studied the possible improvements of the gluon polarization measurements using
Monte Carlo simulation and they are shown and discussed in this paper.


title:
Recent NA48 results on semileptonic and rare kaon decays. Measurement of
  Vus

abstract:
  The new results of investigation of K^0_Le3 and K^{\pm}e3 decays performed by
NA48 Collaboration are presented. The measured branching fractions are used to
extract Vus. The values of Ke3 form-factors and radiative K^0_Le3\gamma
branching ratio are reported. A list of recent NA48 results concerning some
rare neutral kaon decays is given.


title:
Probing gluon polarization with pi0's in longitudinally polarized proton
  collisions at the RHIC-PHENIX experiment

abstract:
  This report presents double helicity asymmetry in inclusive $\pi^0$
production in polarized proton-proton collisions at a center-of-mass energy
($\sqrt{s}$) of 200 GeV. The data were collected with the PHENIX detector at
the Relativistic Heavy Ion Collider (RHIC) during the 2004 run. The data are
compared to a next-to-leading order perturbative quantum chromodynamic (NLO
pQCD) calculation.


title:
Measurement of the W+W- Production Cross Section in ppbar Collisions at
  sqrt(s)=1.96 TeV using Dilepton Events

abstract:
  We present a measurement of the W+W- production cross section using 184/pb of
ppbar collisions at a center-of-mass energy of 1.96 TeV collected with the
Collider Detector at Fermilab. Using the dilepton decay channel W+W- ->
l+l-vvbar, where the charged leptons can be either electrons or muons, we find
17 candidate events compared to an expected background of 5.0+2.2-0.8 events.
The resulting W+W- production cross section measurement of sigma(ppbar -> W+W-)
= 14.6 +5.8 -5.1 (stat) +1.8 -3.0 (syst) +-0.9 (lum) pb agrees well with the
Standard Model expectation.


title: Delta G from high pT events at SMC and high pT analysis at COMPASS

abstract:
  Measurements of the longitudinal spin cross section asymmetry for deep
inelastic muon-nucleon interactions with two high transverse momentum hadrons
($p_T >$ 0.7 GeV) in the final state are presented for SMC data for polarized
proton and deuteron and for data on polarized deuteron from COMPASS taken in
2002 and 2003. The muon asymmetries determined with a cut on $Q^2>$ 1 GeV$^2$
in SMC are: $A_p = 0.03 \pm 0.057\pm 0.01$ and $A_d = 0.070 \pm 0.076 \pm
0.010$, respectively. From these values a gluon polarization $\Delta G /G =
-0.20\pm 0.28\pm 0.10$ was obtained at an average fraction of nucleon momentum
carried by gluons $\eta = 0.07$. The measured asymmetry (with cut on $Q^2>$ 1
GeV$^2$) in COMPASS is $(A_d/D) = -0.015 \pm 0.08 \pm 0.013$ where D is
depolarization factor and the gluon polarization $\Delta G /G = 0.06\pm 0.31\pm


title: Experimental review of diffractive phenomena

abstract:
  A review is given of the measurements of the hard diffractive interactions in
recent years from two high-energy colliders, the HERA $ep$ collider and the
Tevatron $p\bar{p}$ collider. The structure of the diffractive exchange in
terms of partons, the factorisation properties and the ratio of diffractive to
non-diffractive cross sections are discussed.


title: Measurement of the muon anomaly to high and even higher precision

abstract:
  Our recent series of measurements at Brookhaven National Laboratory
determined the muon anomalous magnetic moment \amu to a precision of 0.5 ppm.
The final result--representing the average of five running periods using both
positive and negative muons--is $\amu ^\pm = 11 659 208(6) \times 10^{-10}$. It
lies 2.7 standard deviations above the standard model expectation, which is
based on updates given at this Workshop. Importantly, only the $e^{+}e^{-}$
annihilation and new KLOE radiative return data are used for the hadronic
vacuum polarization input. Because the systematic limit has not been reached in
the experiment, a new effort has been proposed and approved with the highest
scientific priority at Brookhaven. The goal is an experimental uncertainty of
0.2 ppm, a 2.5-fold reduction in the overall experimental uncertainty. To do so
will require a suite of upgrades and several qualitative changes in the
philosophy of how the measurement is carried out. I discuss the old and new
experiments with a particular emphasis on the technical matters that require
change for the future.


title: Exploring the Proton's Spin at PHENIX

abstract:
  In late 2001 the first polarized proton collisions at the Relativistic Heavy
Ion Collider (RHIC) took place. The PHENIX experiment at RHIC has a broad
program to investigate the spin structure of the proton. This program will be
described, and first results will be presented.


title: Upgrade of the D0 Detector: The Tevatron Beyond 2 fb-1

abstract:
  Recent performance of Fermilab's Tevatron has exceeded this year's design
goals and further accelerator upgrades are underway. The high-luminosity period
which follows these improvements is known as Run IIb. The D0 experiment is in
the midst of a comprehensive upgrade program designed to enable it to thrive
with much higher data rate and occupancy. Extensive modifications of and
additions to all levels of the trigger and the silicon tracker are in progress.
All upgrade projects are on schedule for installation in the 2005 shutdown.


title: Measurement of the gluon polarization \Delta G/G at COMPASS

abstract:
  One of the key objectives of the COMPASS experiment at CERN is the
determination of the gluon contribution to the nucleon spin. The gluon
polarization is measured via photon-gluon fusion in deep-inelastic scattering
of 160 GeV/c polarized muons on a polarized 6LiD solid-state target.
Photon-gluon fusion is tagged by the observation of charmed mesons or the
production of hadron pairs with large transverse momenta p_t. The status of the
analysis of the D0 and D0* events and of the high-p_t hadron pairs is shown.
The gluon polarization \Delta G/G has been determined from the asymmetry of
high-p_t hadron pairs with Q^2>1 GeV/c^2 in an analysis of the 2002/03 data as
\Delta G/G=0.06 \pm 0.31 (stat.) \pm 0.06 (syst.).


title: Phi_2 (alpha) measurement using B -> rho pi decays at Belle

abstract:
  We present measurements of time-dependent asymmetries in decays of neutral B
mesons to the final states B0 -> rho+ pi-. Measurements are based on a 140 fb-1
data sample collected at the Upsilon(4S) resonance with the Belle detector at
the KEKB asymmetric-energy e+e- collider.


title:
A Discrimination Procedure between Muon and Electron in Superkamiokande
  Experiment Based on the Angular Distribution Function Method

abstract:
  In the previous paper, we construct the angular distribution functions for
muon and electron as well as their relative fluctuation functions to find
suitable discrimination procedure between muon and electron in Superkamiokande
experiment. In the present paper, we are able to discriminate muons from
electrons in Fully Contained Events with a probability of error of less than
several %. At the same time, our geometrical reconstruction procedure,
considering only the ring-like structure of the Cherenkov image, gives an
unsatisfactory resolution for 1GeV electron and muon, with a mean vertex
position error, delta r, of 5-10 m and a mean directional error, delta theta,
of about 6-20 degrees. In contrast, a geometrical reconstruction procedure
utilizing the full image and using a detailed approximation of the event
angular distribution works much better: for a 1 GeV electron, delta r is about
2 m and delta theta is about 3 degrees; for a 1GeV muon, delta r is about 3 m
and delta theta is about 5 degrees. At 5 GeV, the corresponding values are
about 1.4 m and about 2 degree for electron and are about 2.9m and about 4.3
degrees for muon. The numerical values depend on a single PMT contribution
threshold. The values quoted above are the minima with respect to this
threshold.
  Even the methodologically correct approach we have adopted, based on detailed
simulations using closer approximations than those adopted in the SK analysis,
cannot reproduce the accuracies for particle discrimination, momentum
resolution, interaction vertex location, and angular resolution obtained by the
SK simulations, suggesting the assumptions in these may be inadequate.


title:
How well does NLO pQCD describe strangeness in $p+p$ collisions at
  $\sqrt{s}$= 200 GeV in STAR?

abstract:
  We present measurements of the transverse momentum spectra for
$\mathrm{K^{0}_{S}}$, $\Lambda$, $\Xi$ and their antiparticles in p+p
collisions at $\sqrt{s}=200 GeV$. The extracted mid-rapidity yields and
$<\mathrm{p_{T}}>$ are in agreement with previous $p+\bar{p}$ experiments while
they have smaller statistical errors. We compare the measured spectra for
$\mathrm{K^{0}_{S}}$ and $\Lambda$ to the latest available calculations from
NLO pQCD and see good agreement for the $\mathrm{K^{0}_{S}}$ above 1.5 GeV/c.


title:
Study of deep inelastic inclusive and diffractive scattering with the
  ZEUS forward plug calorimeter

abstract:
  Deep inelastic scattering and its diffractive component, ep -> e'gamma*p
->e'XN, have been studied at HERA with the ZEUS detector using an integrated
luminosity of 4.2 pb-1. The measurement covers a wide range in the gamma*p c.m.
energy W (37 - 245 GeV), photon virtuality Q2 (2.2 - 80 GeV2) and mass Mx. The
diffractive cross section for Mx > 2 GeV rises strongly with W; the rise is
steeper with increasing Q2. The latter observation excludes the description of
diffractive deep inelastic scattering in terms of the exchange of a single
Pomeron. The ratio of diffractive to total cross section is constant as a
function of W, in contradiction to the expectation of Regge phenomenology
combined with a naive extension of the optical theorem to gamma*p scattering.
Above Mx of 8 GeV, the ratio is flat with Q2, indicating a leading-twist
behaviour of the diffractive cross section. The data are also presented in
terms of the diffractive structure function, F2D(3)(beta,xpom,Q2), of the
proton. For fixed beta, the Q2 dependence of xpom F2D(3) changes with xpom in
violation of Regge factorisation. For fixed xpom, xpom F2D(3) rises as beta ->
0, the rise accelerating with increasing Q2. These positive scaling violations
suggest substantial contributions of perturbative effects in the diffractive
DIS cross section.


title: Search for Factorization-Suppressed B -> chi_c K(*) Decays

abstract:
  We search for the factorization-suppressed decays B -> chi_c0 K(*) and B ->
chi_c2 K(*), with chi_c0 and chi_c2 decaying into J/psi gamma using a sample of
124 10^6 BBbar events collected with the BABAR detector at the PEP-II storage
ring of the Stanford Linear Accelerator Center.


title:
$A_N$ at small negative values of $\xf$ in the reaction $p+p(pol) \to
  \pi^0+X$ at 70 GeV and universal threshold in inclusive pion production

abstract:
  The talk continues the series of Single Spin Asymmetry (SSA) $\pi^0$
inclusive measurements carried out at Protvino 70 GeV accelerator. The
asymmetry in the polarized target fragmentation region grows up in absolute
value with $\xf$ decreasing and equals to $(-16 \pm 5)%$ at $-0.4<\xf<-0.25$.
The result of the current experiment is in agreement with the universal
threshold in pion asymmetries.


title:
Single spin asymmetry measurements for $\pi^0$ inclusive productions in
  $p+p_{\uparrow} \to \pi^0 + X$ and $\pi^-+\p_{\uparrow}\to \pi^0+X$ reactions
  at 70 and 40 GeV respectively

abstract:
  The inclusive $\pi^0$ asymmetries were measured in reactions $p+p\uparrow \to
\pi^0+X$ and $\pi^-+p\uparrow \to \pi^0+X$ at 70 and 40 GeV/c respectively. The
measurements were made at the central region (for the first reaction) and
asymmetry is compatible with zero in the entire measured $p_T$ region. For the
second reaction the asymmetry is zero for small $x_F$ region ($-0.4<x_F<-0.1,
0.5<p_T(GeV/c) <1.5$) and increases with growth of $\mid x_F\mid$. Averaged
over the interval $-0.8<x_F<-0.4, 1<p_T(GeV/c)<2$ the asymmetry was $-(13.8\pm
3.8)%$.


title:
A Measurement of Atmospheric Neutrino Oscillation Parameters by
  Super-Kamiokande I

abstract:
  We present a combined analysis of fully-contained, partially-contained and
upward-going muon atmospheric neutrino data from a 1489 day exposure of the
Super--Kamiokande detector. The data samples span roughly five decades in
neutrino energy, from 100 MeV to 10 TeV. A detailed Monte Carlo comparison is
described and presented. The data is fit to the Monte Carlo expectation, and is
found to be consistent with neutrino oscillations of $\nu_\mu \leftrightarrow
\nu_\tau$ with $\sin^22\theta > 0.92$ and $1.5\times 10^{-3} < \Delta m^2 <
3.4\times 10^{-3}{\rm eV}^2$ at 90% confidence level.


title: Electromagnetic and Weak Moments of the Tau-Lepton

abstract:
  The electromagnetic and weak dipole moments of the Tau-lepton have been
measured by experiments at e+e- colliders. Data samples of e+e- --> tau+tau-,
e+e- --> tau+tau- gamma and e+e- --> e+e-tau+tau- events collected at
centre-of-mass energies between 10 and 200 GeV are used. No deviation from the
Standard Model is found. Limits on the moments are summarised from the most
recent results.


title: Measurement of prompt photon in sqrt(s)=200GeV pp collisions

abstract:
  This report presents the preliminary result for the prompt photon production
cross section in proton-proton collisions in the mid-rapidity region using the
PHENIX detector. The NLO pQCD calculation is in good agreement with the data.
The measurement was made with and without an isolation cut. The isolation cut
significantly improves the signal purity without reducing the signal yield.
This is an important step for the future spin asymmetry measurement.


title:
Search for non-SM Light Higgs Boson in the h -> to gamma gamma Channel
  at D0 in Run II

abstract:
  A search for non-SM light Higgs boson with an enhanced branching fraction
into photons in ppbar collisions at the Fermilab Tevatron is presented using
Run II DO data taken between April 2002 and September 2003. We set 95% CL
limits on the diphoton branching fraction as a function of Higgs mass for
Fermiophobic and Topcolor Higgs scenarios.


title: Search for tau -> e gamma decay at Belle

abstract:
  We have searched for the lepton-flavor-violating decay tau -> e gamma using a
data sample of 86.7/fb collected with the Belle detector at the KEKB asymmetric
e^+ e^- collider. No evidence for a signal is obtained, and we set an upper
limit for the branching fraction Br(tau -> e gamma) < 3.9 x 10^-7 at the 90%
C.L.


title:
Search for pentaquarks decaying to Xi-pi in deep inelastic scattering at
  HERA

abstract:
  A search for pentaquarks decaying to Xi^{-} pi^{-} (Xi^{-} pi^{+}) and
corresponding antiparticles has been performed with the ZEUS detector at HERA.
The data sample consists of deep inelastic ep scattering events at
centre-of-mass energies of 300 and 318 GeV, and corresponds to 121 pb^{-1} of
integrated luminosity. A clear signal for Xi^{0}(1530) to Xi^{-} pi^{+} was
observed. However, no signal for any new baryonic state was observed at higher
masses in either the Xi^{-} pi^{-} or Xi^{-} pi^{+} channels. The searches in
the antiparticle channels were also negative. Upper limits on the ratio of a
possible Xi^{--}_{3/2} (Xi^{0}_{3/2}) signal to the Xi^{0}(1530) signal were
set in the mass range 1650-2350 MeV.


title: Search for lepton-flavor violation at HERA

abstract:
  A search for lepton-flavor-violating interactions $e p \to \mu X $ and $e
p\to \tau X $ has been performed with the ZEUS detector using the entire HERA I
data sample, corresponding to an integrated luminosity of 130 pb^{-1}. The data
were taken at center-of-mass energies, $\sqrt{s}$, of 300 and 318 GeV. No
evidence of lepton-flavor violation was found, and constraints were derived on
leptoquarks (LQs) that could mediate such interactions. For LQ masses below
$\sqrt{s}$, limits were set on $\lambda_{eq_1} \sqrt{\beta_{\ell q}}$, where
$\lambda_{eq_1}$ is the coupling of the LQ to an electron and a
first-generation quark $q_1$, and $\beta_{\ell q}$ is the branching ratio of
the LQ to the final-state lepton $\ell$ ($\mu$ or $\tau$) and a quark $q$. For
LQ masses much larger than $\sqrt{s}$, limits were set on the four-fermion
interaction term $\lambda_{e q_\alpha} \lambda_{\ell q_\beta} /
M_{\mathrm{LQ}}^2$ for LQs that couple to an electron and a quark $q_\alpha$
and to a lepton $\ell$ and a quark $q_\beta$, where $\alpha$ and $\beta$ are
quark generation indices. Some of the limits are also applicable to
lepton-flavor-violating processes mediated by squarks in $R$-Parity-violating
supersymmetric models. In some cases, especially when a higher-generation quark
is involved and for the process $e p\to \tau X $, the ZEUS limits are the most
stringent to date.


title:
Improved Measurements of CP-Violating Asymmetry Amplitudes in B0 ->
  pi+pi- Decays

abstract:
  We present updated measurements of the CP-violating parameters S_pipi and
C_pipi in B0 -> pi+pi- decays. Using a sample of 227 million Y(4S) -> BBbar
decays collected with the BaBar detector at the PEP-II asymmetric-energy e+e-
collider at SLAC, we observe 467 +- 33 signal decays and measure S_pipi = -0.30
+- 0.17 (stat) +- 0.03 (syst), and C_pipi = -0.09 +- 0.15 (stat) +- 0.04
(syst).


title: Local Polarimetry for Proton Beams with the STAR Beam Beam Counters

abstract:
  STAR collected data in proton-proton collisions at sqrt(s)=200 GeV with
transverse and longitudinal beam polarizations during the 2003 running period
at RHIC. We present preliminary results on single transverse spin asymmetries
A_N in the production of forward charged hadrons detected with the Beam-Beam
Counters (BBC). The asymmetries A_N measured at pseudorapidities 3.9 < |eta| <
5.0 are found to be of the order of 0.01 while asymmetries measured at smaller
pseudorapidities 3.4 < |eta| < 3.9 are found to be consistent with zero. The
BBC and its associated scaler system for fast data recording provides the first
local polarimeter at STAR. The setup has been sucessfully used to tune the spin
rotator magnets and to verify longitudinal polarization at STAR.


title: Measurement of the Spin Structure of the Deuteron in the DIS Region

abstract:
  We present a new measurement of the longitudinal spin asymmetry A_1^d and the
spin-dependent structure function g_1^d of the deuteron in the range 1 GeV^2 <
Q^2 < 100 GeV^2 and 0.004< x <0.7. The data were obtained by the COMPASS
experiment at CERN using a 160 GeV polarised muon beam and a large polarised
6-LiD target. The results are in agreement with those from previous experiments
and improve considerably the statistical accuracy in the region 0.004 < x <
0.03.


title:
Measurement of Dijet Cross Sections in ep Interactions with a Leading
  Neutron at HERA

abstract:
  Measurements are reported of the production of dijet events with a leading
neutron in ep interactions at HERA. Differential cross sections for
photoproduction and deep inelastic scattering are presented as a function of
several kinematic variables. Leading order QCD simulation programs are compared
with the measurements. Models in which the real or virtual photon interacts
with a parton of an exchanged pion are able to describe the data.
Next-to-leading order perturbative QCD calculations based on pion exchange are
found to be in good agreement with the measured cross sections. The fraction of
leading neutron dijet events with respect to all dijet events is also
determined. The dijet events with a leading neutron have a lower fraction of
resolved photon processes than do the inclusive dijet data.


title:
A search for CP violation and a measurement of the relative branching
  fraction in D+ -> KKpi decays

abstract:
  We report on a search for the CP asymmetry in the singly Cabibbo-suppressed
decays D+ -> KKpi and in the resonant decays D+ -> phipi and D+ -> KstarK based
on a data sample of 79.9 fb^-1 recorded by the BABAR detector. We use the
Cabibbo-favored Ds -> KKpi branching fraction as normalization in the
measurements to reduce systematic uncertainties. The CP asymmetries obtained
are A_{CP}(KKpi) = (1.4 +/- 1.0 (stat.) +/- 0.8 (syst.) x 10^-2, A_{CP}(phi pi)
= (0.2 +/- 1.5 (stat.) +/- 0.6 (syst.) x 10^-2, and A_{CP}(Kstar K) = (0.9 +/-
1.7 (stat.) +/- 0.7 (syst.) x 10^-2. The relative branching fraction Gamma(D+
-> KKpi)/Gamma(D+ -> Kpipi) is also measured and is found to be (10.7 +/- 0.1
(stat.) +/- 0.2 (syst.) x 10^-2.


title:
Production of Electron Neutrinos at Nuclear Power Reactors and the
  Prospects for Neutrino Physics

abstract:
  High flux of electron neutrinos($\nue$) is produced at nuclear power reactors
through the decays of nuclei activated by neutron capture. Realistic simulation
studies on the neutron transport and capture at the reactor core were
performed. The production of $\chr51$ and $\fe55$ give rise to mono-energetic
$\nue$'s at Q-values of 753 keV and 231 keV and fluxes of $8.3 \times 10^{-4}$
and $3.0 \times 10^{-4}$ $\nue$/fission, respectively. Using data from a
germanium detector at the Kuo-Sheng Power Plant, we derived direct limits on
the $\nue$ magnetic moment and the radiative lifetime of $\mu_{\nu} < 1.3
\times 10^{-8} ~ \mub$ and $\rm{\tau_{\nu} / m_{\nu} > 0.11 s / eV}$ at 90%
confidence level (CL), respectively. Indirect bounds on $\rm{\tau_{\nu} /
m_{\nu}^3}$ were also inferred. The $\nue$-flux can be enhanced by loading
selected isotopes to the reactor core, and the potential applications and
achievable statistical accuracies were examined. These include accurate
cross-section measurements, studies of mixing angle $\theta_{13}$ and
monitoring of plutonium production.


title:
The KASKA project - a Japanese medium-baseline reactor-neutrino
  oscillation experiment to measure the mixing angle $\theta_{13}$ -

abstract:
  A new reactor-neutrino oscillation experiment, KASKA, is proposed to measure
the unknown neutrino-mixing angle $\theta_{13}$ using the world's most powerful
Kashiwazaki-Kariwa nuclear power station. It will measure a very small deficit
of reactor-neutrino flux using three identical detectors, two placed just close
to the sources and one at a distance of about 1.8km. Its conceptual design and
physics reach are discussed.


title:
Measurement of the Moments of the Hadronic Invariant Mass Distribution
  in Semileptonic B Decays

abstract:
  Using 180 pb^-1 of data collected with the CDF II detector at the Tevatron,
we measure the first two moments of the hadronic invariant mass-squared
distribution in charmed semileptonic B decays. From these we determine the
non-perturbative Heavy Quark Effective Theory parameters Lambda and lambda_1,
used to relate the B meson semileptonic branching ratio to the CKM matrix
element |V_cb|. For a minimum lepton momentum of 0.7 GeV/c in the B rest frame
me measure the first two moments of the D** --> D(*) pi component to be
<m^2_D**> = (5.83 +/- 0.16(stat) +/- 0.08(syst)) GeV^2, <(m^2_D** -
<m^2_D**>)^2> = (1.30 +/- 0.69(stat) +/- 0.22(syst)) GeV^4. Combining these
with the discrete mass terms from the D and D* mesons, we find the total
moments to be <M^2_Xc> - mbar_D^2 = (0.467 +/- 0.038_(stat) +/- 0.068(syst))
GeV^2, <(M^2_Xc - <M^2_Xc>)^2> = (1.05 +/- 0.26(stat) +/- 0.13(syst)) GeV^4,
where mbar_D is the spin-averaged D mass. The systematic error is dominated by
the uncertainties in the world-average branching ratios used to combine the D,
D* and D** contributions. The analysis makes no assumptions about the shape or
resonant structure of the D** --> D(*) pi invariant mass distribution.


title:
Search for Strange-Pentaquark Production in e+e- Annihilation at
  sqrt(s)=10.58 GeV

abstract:
  We search for strange pentaquark states that have been previously reported by
other experiments -- the $\Theta(1540)^+$, $\Xi_5(1860)^{--}$, and
$\Xi_5(1860)^0$ -- in 123 fb$^{-1}$ of data recorded with the BaBar detector at
the PEP-II $e^+e^-$ storage ring. We find no evidence for these states and set
95% confidence level upper limits on the number of $\Theta(1540)^+$ and
$\Xi_5(1860)^{--}$ pentaquarks produced per $e^+e^-$ annihilation event that
are about eight and four times lower than the rates measured for ordinary
baryons of similar mass.


title: Nucleon longitudinal spin structure at COMPASS

abstract:
  The nucleon spin structure is studied at COMPASS via the measurement of the
spin dependent properties of deep inelastic muon-deuteron scattering. Both
inclusive and semi-inclusive observables are investigated, with the emphasis
put on the latter. This allows to access, in particular, the gluon polarization
($\Delta G/G$) and the flavor decomposition of the quark helicity
distributions. Results from measurements with longitudinal target polarization
are presented, as well as uncertainties expected from the first 3 years of data
taking.


title:
Mid-Rapidity Direct-Photon Production in p+p Collisions at sqrt(s) = 200
  GeV

abstract:
  A measurement of direct photons in p+p collisions at sqrt(s)=200 GeV is
presented. A photon excess above background from pi^0 --> gamma+gamma, eta -->
gamma+gamma, and other decays is observed in the transverse momentum range 5.5
< p_T < 7 GeV/c. The result is compared to a next-to-leading-order perturbative
QCD calculation. Within errors, good agreement is found between the QCD
calculation and the measured result.


title:
Multijet production in neutral current deep inelastic scattering at HERA
  and determination of alpha_s

abstract:
  Multijet production rates in neutral current deep inelastic scattering have
been measured in the range of exchanged boson virtualities 10 < Q2 < 5000 GeV2.
The data were taken at the ep collider HERA with centre-of-mass energy sqrt(s)
= 318 GeV using the ZEUS detector and correspond to an integrated luminosity of
82.2 pb-1. Jets were identified in the Breit frame using the k_T cluster
algorithm in the longitudinally invariant inclusive mode. Measurements of
differential dijet and trijet cross sections are presented as functions of jet
transverse energy E_{T,B}{jet}, pseudorapidity eta_{LAB}{jet} and Q2 with
E_{T,B}{jet} > 5 GeV and -1 < eta_{LAB}{jet} < 2.5. Next-to-leading-order QCD
calculations describe the data well. The value of the strong coupling constant
alpha_s(M_Z), determined from the ratio of the trijet to dijet cross sections,
is alpha_s(M_Z) = 0.1179 pm 0.0013(stat.) {+0.0028}_{-0.0046}(exp.)
{+0.0064}_{-0.0046}(th.)


title: Experimental review of unpolarised nucleon structure functions

abstract:
  Recent results are reviewed on unpolarised structure functions from fixed
target experiments at JLAB, NuTeV and from the HERA ep collider experiments H1
and ZEUS.


title: Using qqZ Events to "Calibrate" Vector Boson Fusion at the LHC

abstract:
  Vector Boson Fusion (VBF) is a promising discovery level process in the Higgs
search at the LHC. Nevertheless, that search depends on understanding the
detector response to a good level of accuracy. Therefore, it is useful to have
a known process by which to validate the search methodology. The VBF production
of a Z with subsequent leptonic decay appears to be ideal in that the Feynman
diagrams are the same for Z and Higgs VBF production and there is a clean
resonance in the dilepton spectrum.


title:
Measurement of Beauty Production at HERA Using Events with Muons and
  Jets

abstract:
  A measurement of the beauty production cross section in ep collisions at a
centre-of-mass energy of 319 GeV is presented. The data were collected with the
H1 detector at the HERA collider in the years 1999-2000. Events are selected by
requiring the presence of jets and muons in the final state. Both the long
lifetime and the large mass of b-flavoured hadrons are exploited to identify
events containing beauty quarks. Differential cross sections are measured in
photoproduction, with photon virtualities Q^2 < 1 GeV^2, and in deep inelastic
scattering, where 2 < Q^2 < 100 GeV^2. The results are compared with
perturbative QCD calculations to leading and next-to-leading order. The
predictions are found to be somewhat lower than the data.


title:
Random Matrix Theory and Analysis of Nucleus-Nucleus Collision at High
  Energies

abstract:
  We propose a novel method for analysis of experimental data obtained at
relativistic nucleus-nucleus collisions. The method, based on the ideas of
Random Matrix Theory, is applied to detect systematic errors that occur at
measurements of momentum distributions of emitted particles. The unfolded
momentum distribution is well described by the Gaussian orthogonal ensemble of
random matrices, when the uncertainty in the momentum distribution is maximal.
The method is free from unwanted background contributions.


title: Limits on Neutral D Mixing in Semileptonic Decays

abstract:
  Using the CLEO II.V detector observing e+e- collisions at around 10.6 GeV we
search for neutral D mixing in semileptonic D0 decays tagged in charged D*
decays. Combining the results from the Kenu and K*enu channels we find that the
rate for D mixing is less than 0.0078 at 90% C.L.


title: Branching Fraction and CP Asymmetries of $B^0 \to K^0_S K^0_S K^0_S$

abstract:
  We present measurements of the branching fraction and time-dependent
CP-violating asymmetries in $B^0 \to K^0_s K^0_s K^0_s$ decays based on 227
million $\Upsilon(4S) \to B \bar{B}$ decays collected with the BaBar detector
at the PEP-II asymmetric-energy $B$ Factory at SLAC. We obtain a branching
fraction of $(6.9^{+0.9}_{-0.8}\pm 0.6)\times 10^{-6},$ and CP asymmetries $C =
-0.34^{+0.28}_{-0.25} \pm 0.05$ and $S = -0.71^{+0.38}_{-0.32} \pm 0.04,$ where
the first uncertainties are statistical and the second systematic.


title:
Longitudinal polarization of $\Lambda$ and $\bar \Lambda$ hyperons in
  deep-inelastic scattering at COMPASS

abstract:
  The production of Lambda and Lambda-bar hyperons by polarized muons of 160
GeV/c on a polarized 6LiD target has been studied using the COMPASS
spectrometer. First preliminary results on the longitudinal polarization of
Lambda and Lambda-bar hyperons produced in the deep-inelastic scattering will
be presented for 2002 data set.


title:
Asymmetry measurement of charged hadron production in pA collisions at
  40 GeV

abstract:
  The single spin asymmetry of charge hadron production by a 40 GeV/c proton
beam with 39% transverse polarization incident on nuclei (C, Cu) has been
measured using the Focusing Double Arm Spectrometer (FODS). The measurements
were carried out for hadrons with high Xt (82 deg. in c.m.) and with high Xf
(one arm at 51 deg. and the other arm at 99 deg. in c.m.).
  The results are presented for charged pions, kaons, protons and antiprotons
with high Xt.


title: Recent Results of High $p_{T}$ Physics at the CDF II

abstract:
  The Tevatron Run II program is in progress since 2001. The CDF experiment
have accumulated roughly five times more data than in Run I, with much improved
detectors. Preliminary results from the CDF experiment are presented. We focus
on the recent high $p_{T}$ physics results in Tevatron Run II program.


title:
Measurements of Branching Fractions and Time-Dependent CP-Violating
  Asymmetries in B to eta' K Decays

abstract:
  We present measurements of the B -> eta' K branching fractions;for B+ -> eta'
K+ we measure also the time-integrated charge asymmetry Ach, and for B0 -> eta'
K0S the time dependent CP-violation parameters S and C. The data sample
corresponds to 232 million B Bbar pairs produced by e+ e- annihilation at the
Upsilon(4S). The results are BF(B+ -> eta' K+) = (68.9 +- 2.0 +- 3.2) * 10^-6,
BF(B0 -> eta' K0) = (67.4 +- 3.3 +- 3.2) * 10^-6, Ach = 0.033 +- 0.028 +-
0.005, S=0.30 +- 0.14 +- 0.02, C=-0.21 +- 0.10 +- 0.02, where the first error
is statistical and the second systematic.


title: Spectroscopy in ep collisions at HERA

abstract:
  Recent spectroscopy studies performed in high energy ep collisions by the H1
and ZEUS Collaborations are described. The status of the searches for the
strange pentaquark, the Theta+, is presented as well as results on searches for
further exotic states such as the Sigma--. The evidence for the observation of
a pentaquark state containing the charmed quark, the Theta_c, is discussed and
the result is given on searches for glueball candidates at HERA.


title: Measurement of CP Asymmetries in B0 --> Phi K0 and B0 --> K+K-K0S Decays

abstract:
  We measure the time-dependent CP asymmetry parameters in B0 --> K+ K- K0
based on a data sample of approximately 227 million B-meson pairs recorded at
the Upsilon(4S) resonance with the BaBar detector at the PEP-II B-meson Factory
at SLAC. We reconstruct two-body B0 decays to Phi(1020) K0S and Phi(1020)K0L,
and the three-body decay K+ K- K0S with Phi(1020) K0S excluded. For the B0 -->
Phi K0 decays, we measure sin(2 beta_{eff})(Phi K0) = +0.50 +/- 0.25(stat)
+0.07/-0.04(syst). The B0 --> K+ K- K0S decays are dominated by K+ K- S-wave,
as determined from an angular analysis; we measure sin(2 beta_{eff})(K+ K- K0S)
= +0.55 +/- 0.22(stat) +/- 0.04(syst) +/- 0.11(CP), where the last error is due
to the uncertainty in the fraction of CP-even contributions to the decay
amplitude. We find no evidence for direct CP violation.


title: An Improved upper limit on the decay K^+ -> pi^+ mu^+ e^-

abstract:
  Based on results of a search for the lepton-family-number-violating decay
$K^+ \to \pi^+\mu^+ e^-$ with data collected by experiment E865 at the
Alternating Gradient Synchrotron of Brookhaven National Laboratory, we place an
upper limit on the branching ratio at $2.1 \times 10^{-11}$ (90% C.L.).
Combining the results with earlier E865 data and those of a previous
experiment, E777, an upper limit on the branching ratio of $1.3 \times
10^{-11}$ (90% C.L.) is obtained.


title:
Study of $B^{-} \to D_{2}^{*}(2460)^{0} \pi^{-}$ and $B^{-} \to
  D_{1}(2420)^{0} \pi^{-} $ Decays

abstract:
  We report on a study of $B$ mesons decaying into one of the narrow P-wave
charm resonances, $D_2^{*}(2460)^{0}$ and $D_1(2420)^0$. Our preliminary
results are based on 89 million \BB pairs collected with the \babar detector at
the PEP-II asymmetric $B$ Factory. Our study will be useful in the
investigation of the properties of Heavy Quark Effective Theory.


title:
A search for J^{PC}=1^{-+} exotic mesons in the pi- pi- pi+ and pi- pi0
  pi0 systems

abstract:
  A partial wave analysis (PWA) of the pi-pi-pi+ and pi-pi0pi0 systems produced
in the reaction pi- p -> (3pi)-p at 18 GeV/c was carried out using an isobar
model assumption. This analysis is based on 3.0M pi-pi0pi0 events and 2.6M
pi-pi-pi+ events and shows production of the a2(1320), pi2(1670) and \pi(1800)
mesons. An earlier analysis of 250K pi-pi-pi+ events from the same experiment
showed possible evidence for a J^{PC}=1^{-+}$ exotic meson with a mass of 1.6
GeV/c^2 decaying into rho pi. In this analysis of a higher statistics sample of
the (3pi)- system in two charged modes we find no evidence of an exotic meson.


title: Review of Recent Top Quark Measurements

abstract:
  At the Tevatron Collider at Fermilab, a large number of top quarks have been
produced in the ongoing run. The CDF and DZero collaborations have made first
measurements of the ttbar cross section in several decay channels, and have
measured the top quark mass. In addition, they have set new limits on the cross
sections for single top quark production, and have started to measure some of
the properties of the top quark via studies of its decays. This paper
summarizes the status of these measurements and discusses where they are
heading in the next few years. The paper is based on a talk I gave at the
Rencontres du Vietnam in Hanoi, August 2004; the results have been updated to
show the latest values and new measurements.


title:
Study of the $\rho$ and $\omega$ meson decays into pseudoscalar meson
  and $e^+e^-$ pair with the CMD-2 detector

abstract:
  Using 3.3 pb$^{-1}$ of data collected with the CMD-2 detector in the 720 --
840 MeV c.m. energy range, the branching fraction of the conversion decay
$\omega\to\pi^0e^+e^-$ has been measured:
$\mathcal{B}(\omega\to\pi^0e^+e^-)=(8.19\pm0.71\pm0.62)\cdot10^{-4}$. The upper
limits for the branching fractions of the following conversion decays have been
obtained at the 90% confidence level:
$\mathcal{B}(\rho\to\pi^0e^+e^-)<1.6\cdot10^{-5}$, $\mathcal{B}(\rho\to\eta
e^+e^-)<0.7\cdot10^{-5}$ and $\mathcal{B}(\omega\to\eta
e^+e^-)<1.1\cdot10^{-5}$.


title:
The $\epem\to\pi^+\pi^-\pi^+\pi^-$, $K^+K^-\pi^+\pi^-$, and $K^+K^-
  K^+K^- $ Cross Sections at Center-of-Mass Energies 0.5--4.5 \gev Measured
  with Initial-State Radiation

abstract:
  We study the process $e^+e^-\to\pi^+\pi^-\pi^+\pi^-\gamma$, with a hard
photon radiated from the initial state. About 60,000 fully reconstructed events
have been selected from 89 $fb^{-1}$ of BaBar data. The invariant mass of the
hadronic final state defines the effective \epem center-of-mass energy, so that
these data can be compared with the corresponding direct $e^+e^-$ measurements.
  From the $4\pi$-mass spectrum, the cross section for the process
$e^+e^-\to\pi^+\pi^-\pi^+\pi^-$ is measured for center-of-mass energies from
0.6 to 4.5 $GeV/c^2$. The uncertainty in the cross section measurement is
typically 5%. We also measure the cross sections for the final states $K^+ K^-
\pi^+\pi^-$ and $K^+ K^- K^+ K^-$. We observe the $J/\psi$ in all three final
states and measure the corresponding branching fractions. We search for X(3872)
in $J/\psi (\to\mu^+\mu^-) \pi^+\pi^-$ and obtain an upper limit on the product
of the $e^+e^-$ width of the X(3872) and the branching fraction for $X(3872)
\to J/\psi\pi^+\pi^-$.


title:
Search for nucleon decay via modes favored by supersymmetric grand
  unification models in Super-Kamiokande-I

abstract:
  We report the results for nucleon decay searches via modes favored by
supersymmetric grand unified models in Super-Kamiokande. Using 1489 days of
full Super-Kamiokande-I data, we searched for $p \to \bar{\nu} K^+$, $n \to
\bar{\nu} K^0$, $p \to \mu^+ K^0$ and $p \to e^+ K^0$ modes. We found no
evidence for nucleon decay in any of these modes. We set lower limits of
partial nucleon lifetime 2.3$\times10^{33}$, 1.3$\times10^{32}$,
1.3$\times10^{33}$ and 1.0$\times10^{33}$ years at 90% confidence level for $p
\to \bar{\nu} K^+$, $n \to \bar{\nu} K^0$, $p \to \mu^+ K^0$ and $p \to e^+
K^0$ modes, respectively. These results give a strong constraint on
supersymmetric grand unification models.


title:
Measurement of the branching ratios $\psi^\prime \to e^+ e^-$,
  $\psi^\prime \to J/\psi \pi \pi$ and $\psi^\prime \to J/\psi \eta$

abstract:
  We have measured several branching ratios for $\psi^\prime$ decay using the
data collected by FNAL E835 experiment during year 2000, obtaining ${\cal
B}(\psi^\prime \to e^+ e^-) = 0.0068\pm0.0001\pm0.0004$, ${\cal B}(\psi^\prime
\to J/\psi \pi^+ \pi^-) = 0.292\pm0.005\pm0.018$, ${\cal B}(\psi^\prime \to
J/\psi \pi^0 \pi^0) = 0.167\pm0.005\pm0.014$ and ${\cal B}(\psi^\prime \to
J/\psi \eta) = 0.028\pm0.002\pm0.002$. We also present a measurement of the
dipion mass distribution in the decays $\psi^\prime \to J/\psi \pi \pi$.


title:
Improved Spin Dependent Limits from the PICASSO Dark Matter Search
  Experiment

abstract:
  The PICASSO experiment reports an improved limit for the existence of cold
dark matter WIMPs interacting via spin-dependent interactions with nuclei. The
experiment is installed in the Sudbury Neutrino Observatory at a depth of 2070
m. With superheated C4F10 droplets as the active material, and an exposure of
1.98+-0.19 kgd, no evidence for a WIMP signal was found. For a WIMP mass of 29
GeV/c2, limits on the spin-dependent cross section on protons of sigma_p = 1.31
pb and on neutrons of sigma_n = 21.5 pb have been obtained at 90% C.L. In both
cases, some new parameter space in the region of WIMP masses below 20 GeV/c2
has now been ruled out. The results of these measurements are also presented in
terms of limits on the effective WIMP-proton and neutron coupling strengths a_p
and a_n.


title:
Forward jet production in deep inelastic ep scattering and low-x parton
  dynamics at HERA

abstract:
  Differential inclusive jet cross sections in neutral current deep inelastic
ep scattering have been measured with the ZEUS detector. Three phase-space
regions have been selected in order to study parton dynamics where the effects
of BFKL evolution might be present. The measurements have been compared to the
predictions of leading-logarithm parton shower Monte Carlo models and
fixed-order perturbative QCD calculations. In the forward region, QCD
calculations at order alpha_s^1 underestimate the data up to an order of
magnitude at low x. An improved description of the data in this region is
obtained by including QCD corrections at order alpha_s^2, which account for the
lowest-order t-channel gluon-exchange diagrams, highlighting the importance of
such terms in parton dynamics at low x.


title:
Measurement of inclusive differential cross sections for Upsilon(1S)
  production in p-pbar collisions at sqrt(s) = 1.96 TeV

abstract:
  We present measurements of the inclusive production cross sections of the
Upsilon(1S) bottomonium state in ppbar collisions at sqrt(s) = 1.96 TeV. Using
the Upsilon(1S) to mu+mu- decay mode for a data sample of 159 +- 10 pb^-1
collected by the D0 detector at the Fermilab Tevatron collider, we determine
the differential cross sections as a function of the Upsilon(1S) transverse
momentum for three ranges of the Upsilon(1S) rapidity: 0 < |y| < 0.6, 0.6 < |y|
< 1.2, and 1.2 < |y| < 1.8.


title:
Precise measurement of spin-averaged chi_{cJ}(1P) mass using photon
  conversions in psi(2S) -> gamma chi_{cJ}

abstract:
  Using photon conversions to e^+e^- pairs, the energy spectrum of inclusive
photons from psi(2S) radiative decays is measured by BESII at the Beijing
Electron-Positron Collider. The chi_{cJ}(1P) states (J=0,1,2) are clearly
observed with energy resolution between 2.3 to 3.8 MeV, and their masses and
the spin-averaged chi_{cJ} mass are determined to be M_{chi_{c0}}=3414.21\pm
0.39 \pm 0.27, M_{chi_{c1}}=3510.30\pm 0.14\pm 0.16, M_{chi_{c2}}=3555.70\pm
0.59 \pm 0.39 and M(^3P_{cog})=3524.85\pm 0.32 \pm 0.30 MeV/c^2.


title: Search for Lepton Flavor Violation in the Decay tau -> mu gamma

abstract:
  A search for the nonconservation of lepton flavor number in the decay tau ->
mu gamma has been performed using 2.07 x 10^8 e+e- -> tau+ tau- events produced
at a center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II
storage ring. We find no evidence for a signal and set an upper limit on the
branching ratio of BR(tau -> mu gamma) < 6.8 x 10^-8 at 90% confidence level.


title: NOSTOS experiment and new trends in rare event detection

abstract:
  A novel low-energy neutrino-oscillation experiment NOSTOS, combining a strong
tritium source and a high pressure spherical TPC detector (10 m in radius) has
been recently proposed. The goal of the experiment is to measure the mixing
angle $\theta_{13}$, the neutrino magnetic moment and the Weinberg angle at low
energy. The same apparatus, filled with high pressure Xenon, exhibits a high
sensitivity as a Super Nova neutrino detector with extra galactic sensitivity.
Results of a first prototype will be shown and a short-term experimental
program will be discussed.


title:
Calibration of the Makrofol Nuclear Track Detector using Relativistic
  Lead Ions

abstract:
  We present the calibration of the Makrofol nuclear detector using Pb ions of
158 AGeV.


title:
Improved Evidence for Direct CP Violation in B0 --> pi+ pi- Decays and
  Model-Independent Constraints on phi_2

abstract:
  We present a new measurement of the time-dependent CP-violating parameters in
B0 --> pi+ pi- decays with 275 x 10^6 BB-bar pairs collected with the Belle
detector at the KEKB asymmetric-energy e+e- collider operating at the
Upsilon(4S) resonance. We find 666 +/- 43 B0 --> pi+ pi- events and measure the
CP-violating parameters: S_pipi = -0.67 +/- 0.16(stat) +/- 0.06(syst) and
A_pipi = +0.56 +/- 0.12(stat) +/- 0.06(syst). We find evidence for large direct
CP-violation with a significance greater than 4 standard deviations for any
S_pipi value. Using isospin relations, we obtain 95.4% confidence intervals for
the CKM angle phi_2 of 0 deg. < phi_2 < 19 deg. and 71 deg. < phi_2 < 180 deg.


title:
Study of $Z\gamma$ events and limits on anomalous $ZZ\gamma$ and
  $Z\gamma\gamma$ couplings in ppbar collisions at $sqrt(s) = 1.96$ TeV

abstract:
  We present a measurement of the Z\gamma production cross section and limits
on anomalous ZZ\gamma and Z\gamma\gamma couplings for form-factor scales of
Lambda = 750 and 1000 GeV. The measurement is based on 138 (152) candidate
events in the ee\gamma (\mu\mu\gamma) final state using 320 (290) pb^{-1} of
ppbar collisions at \sqrt{s} = 1.96 TeV. The 95% C.L. limits on real and
imaginary parts of individual anomalous couplings are |h_{10,30}^{Z}|<0.23,
|h_{20,40}^{Z}|<0.020, |h_{10,30}^{\gamma}|<0.23, and
|h_{20,40}^{\gamma}|<0.019 for Lambda = 1000 GeV.


title: Final results on the neutrino magnetic moment from the MUNU experiment

abstract:
  The MUNU detector was designed to study neutrino-electron elastic scattering
at low energy. The central component is a Time Projection Chamber filled with
CF4 gas, surrounded by an anti-Compton detector. The experiment was carried out
at the Bugey (France) nuclear reactor. In this paper we present the final
analysis of the data recorded at 3 bar and 1 bar pressure. Both the energy and
the scattering angle of the recoil electron are measured. From the 3 bar data a
new upper limit on the neutrino magnetic moment was derived. At 1 bar electron
tracks down to 150 keV were reconstructed, demonstrating the potentiality of
the experimental technique for future applications in low energy neutrino
physics.


title:
Observation of $B^0 \to D^+ D^-$, $B^- \to D^0 D^-$ and $B^- \to D^0
  D^{*-}$ decays

abstract:
  We report the first observation of the decay modes $B^0 \to D^+ D^-$, $B^-
\to D^0 D^-$ and $B^- \to D^0 D^{*-}$ based on 152 $\times$ 10$^6$ $B\bar{B}$
events collected at KEKB. The branching fractions of $B^0 \to D^+ D^-$, $B^-
\to D^0 D^-$ and $B^- \to D^0 D^{*-}$ are found to be $(3.21 \pm 0.57 \pm 0.48)
\times 10^{-4}$, $(5.62 \pm 0.82 \pm 0.65) \times 10^{-4}$ and $(4.59 \pm 0.72
\pm 0.56) \times 10^{-4}$, respectively. Charge asymmetries in the $B^- \to D^0
D^-$ and $B^- \to D^0 D^{*-}$ channels are consistent with zero.


title: Experimental neutrino physics

abstract:
  The current experimental status of neutrino physics is reviewed. It contains
the evidences for a non-vanishing neutrino rest mass from neutrino oscillation
searches. In addition an outlook is given on determining the various mixing
matrix elements and mass differences more precisely with new experiments. Of
special interest is the value of the mixing angle \theta_{13} determining the
possibility of detecting leptonic CP violation in the future. The prospect for
absolute mass measurements using beta and double beta decay as well as
cosmological observations is presented.


title: Future of low-x forward physics at RHIC

abstract:
  The rapidity dependence of inclusive and coincident particle production in
d(p)+Au collisions at RHIC can be used to probe nuclear parton distribution
functions down to small momentum fractions where theory anticipates that parton
saturation could be present. This paper describes how such experiments could be
completed.


title:
Measurement of the $B^0\to D^{\ast-} D_s^{\ast+}$ and
  $D_s^+\to\phi\pi^+$ Branching Fractions

abstract:
  We present measurements of the branching fractions $\BR(B^0\to D^{\ast-}
D_s^{\ast+})$ and $\BR(D_s^+\to\phi\pi^+)$, based on $123\times10^6$
Y(4S)->BBbar decays collected by the BaBar detector at the PEP-II
asymmetric-energy $e^+e^-$ B factory. A partial reconstruction technique is
used to measure $\BR(B^0\to D^{\ast-} D_s^{\ast+})$ and the decay chain is
fully reconstructed to measure the branching fraction product $\BR(B^0\to
D^{\ast-} D_s^{\ast+})\times\BR(D_s^+\to\phi\pi^+)$. Comparing these two
measurements provides a model-independent determination of the \Dsphipi\
branching fraction. We obtain $\BR(B^0\to D^{\ast-} D_s^{\ast+}) = (1.88 \pm
0.09 \pm 0.17)%$ and $\BR(D_s^+\to\phi\pi^+) = (4.81 \pm 0.52 \pm 0.38)%$,
where the first uncertainties are statistical and the second systematic.


title:
Reduction of Statistical Power Per Event Due to Upper Lifetime Cuts in
  Lifetime Measurements

abstract:
  A cut on the maximum lifetime in a lifetime fit not only reduces the number
of events, but also, in some circumstances dramatically, decreases the
statistical significance of each event. The upper impact parameter cut in the
hadronic B trigger at CDF, which is due to technical limitations, has the same
effect. In this note we describe and quantify the consequences of such a cut on
lifetime measurements. We find that even moderate upper lifetime cuts, leaving
event numbers nearly unchanged, can dramatically increase the statistical
uncertainty of the fit result.


title:
Measurement of the Alpha Asymmetry Parameter for the Omega- to Lambda K-
  Decay

abstract:
  We have measured the alpha parameter of the Omega- to Lambda K- decay using
data collected with the HyperCP spectrometer during the 1997 fixed-target run
at Fermilab. Analyzing a sample of 0.96 million Omega- to Lambda K^-, Lambda to
p pi- decays, we obtain alpha_Omega*alpha_Lambda =
[1.33+/-0.33(stat)+/-0.52(syst)] x 10^{-2}. With the accepted value of
alpha_Lambda, alpha_Omega is found to be [2.07+/-0.51(stat)+/-0.81(syst)] x
10^{-2}.


title:
First Evidence for $B_s^0 \to \phi \phi$ Decay and Measurements of
  Branching Ratio and $A_{CP}$ for $B^+ \to \phi K^+$

abstract:
  We present the first evidence of charmless decays of the $B_s^0$ meson, the
decay \phiphi, and a measurement of the Branching Ratio $\BR(\phiphi)$ using
$180 {\rm pb}^{-1}$ of data collected by the \cdfii experiment at the Fermilab
Tevatron collider. In addition, the BR and direct CP asymmetry for the \phik\
decay are measured. We obtain: $\BR (\phiphi) = (14 \ase{6}{5}(stat.) \pm
6(syst.)) \times 10^{-6}$, $\BR (\phik) = (7.6 \pm 1.3(stat.) \pm 0.6(syst.))
\times 10^{-6}$, and $\ACP(\phik) = -0.07 \pm 0.17 (stat.) \ase{0.03}{0.02}
(syst.)$. Both decays are governed in the Standard Model by second order
(penguin) $b \myto s\bar{s}s$ amplitudes.


title:
Measurements of Cabibbo Suppressed Hadronic Decay Fractions of Charmed
  D0 and D+ Mesons

abstract:
  Using data collected with the BESII detector at $e^{+}e^{-}$ storage ring
Beijing Electron Positron Collider, the measurements of relative branching
fractions for seven Cabibbo suppressed hadronic weak decays $D^0 \to K^- K^+$,
$\pi^+ \pi^-$, $K^- K^+ \pi^+ \pi^-$ and $\pi^+ \pi^+ \pi^- \pi^-$, $D^+ \to
\bar{K^0} K^+$, $K^- K^+ \pi^+$ and $\pi^- \pi^+ \pi^+$ are presented.


title: qqH Search at the LHC with H Decay Into Two Leptons and Two Neutrinos

abstract:
  The search for the Higgs boson produced by Vector Boson Fusion (VBF) where
the Higgs decays into W pairs and thence to leptons plus neutrinos is discussed
at the Monte Carlo generator level. In particular, the cuts which are applied
in order to reduce backgrounds are almost exactly those used to extract the VBF
production of Z bosons.


title: LHCb: Status and Physics Prospects

abstract:
  We discuss the current status and the physics prospects at the LHCb detector,
the dedicated B physics detector at the LHC, due to start data taking in 2007.


title:
First Measurement of the Transverse Spin Asymmetries of the Deuteron in
  Semi-Inclusive Deep Inelastic Scattering

abstract:
  First measurements of the Collins and Sivers asymmetries of charged hadrons
produced in deep-inelastic scattering of muons on a transversely polarized
6-LiD target are presented. The data were taken in 2002 with the COMPASS
spectrometer using the muon beam of the CERN SPS at 160 GeV/c. The Collins
asymmetry turns out to be compatible with zero, as does the measured Sivers
asymmetry within the present statistical errors.


title:
Search for Intermediate Mass Magnetic Monopoles and Nuclearites with the
  SLIM experiment

abstract:
  SLIM is a large area experiment (440 m2) installed at the Chacaltaya cosmic
ray laboratory since 2001, and about 100 m2 at Koksil, Himalaya, since 2003. It
is devoted to the search for intermediate mass magnetic monopoles (107-1013
GeV/c2) and nuclearites in the cosmic radiation using stacks of CR39 and
Makrofol nuclear track detectors. In four years of operation it will reach a
sensitivity to a flux of about 10-15 cm-2 s-1 sr-1. We present the results of
the calibration of CR39 and Makrofol and the analysis of a first sample of the
exposed detector.


title:
Search for Long-Lived Doubly-Charged Higgs Bosons in p-pbar Collisions
  at sqrt{s} = 1.96 TeV

abstract:
  We present a search for long-lived doubly-charged Higgs bosons (H^{\pm \pm}),
with signatures of high ionization energy loss and muon-like penetration.
  We use 292/pb of data collected in p-pbar collisions at sqrt{s} = 1.96 TeV by
the CDF II detector at the Fermilab Tevatron.
  Observing no evidence of long-lived doubly-charged particle production, we
exclude H^{\pm \pm}_L and H^{\pm \pm}_R bosons with masses below 133 GeV/c^2
and 109 GeV/c^2, respectively. In the degenerate case we exclude H^{\pm \pm}
mass below 146 GeV/c^2. All limits are quoted at the 95% confidence level.


title: Measurement of the branching ratios of the Z0 into heavy quarks

abstract:
  We measure the hadronic branching ratios of the Z0 boson into heavy quarks:
Rb=Gamma(Z0->bb)/Gamma(Z0->hadrons) and Rc=Gamma(Z0->cc/Gamma(Z0->hadrons)
using a multi-tag technique. The measurement was performed using about 400,000
hadronic Z0 events recorded in the SLD experiment at SLAC between 1996 and
1998. The small and stable SLC beam spot and the CCD-based vertex detector were
used to reconstruct bottom and charm hadron decay vertices with high efficiency
and purity, which enables us to measure most efficiencies from data. We obtain,
Rb=0.21604 +- 0.00098(stat.) +- 0.00073(syst.) -+ 0.00012(Rc) and, Rc= 0.1744
+- 0.0031(stat.) +- 0.0020(syst.) -+ 0.0006(Rb)


title: Measurement of gamma gamma -> p p-bar production at Belle

abstract:
  A high precision study of the process gamma gamma -> p p-bar has been
performed using a data sample of 89/fb collected with the Belle detector at the
KEKB e+e- collider. The cross section of p p-bar production has been measured
at two-photon center-of-mass (c.m.) energies between 2.025 and 4.0 GeV and in
the c.m. angular range of |cos(theta^*)|<0.6. Production of gamma gamma ->
eta_c -> p p-bar is observed and the product of the two-photon width of the
eta_c and its branching ratio to p p-bar is determined.


title:
Application of Genetic Programming to High Energy Physics Event
  Selection

abstract:
  We review genetic programming principles, their application to FOCUS data
samples, and use the method to study the doubly Cabibbo suppressed decay D+ ->
K+ pi+ pi- relative to its Cabibbo favored counterpart, D+ -> K- pi+ pi+. We
find that this technique is able to improve upon more traditional analysis
methods. To our knowledge, this is the first application of the genetic
programming technique to High Energy Physics data.


title:
Measurement of Time-Dependent CP-Violating Asymmetry in B0 -> Ks pi0
  gamma Decay

abstract:
  We present a new measurement of CP-violation parameters in B0 -> Ks pi0 gamma
decay based on a sample of 275 x 10^6 B\bar{B} pairs collected at the
Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric
e^+e^- collider. One of the B mesons is fully reconstructed in the B0 -> Ks pi0
gamma decay. The flavor of the accompanying B meson is identified from its
decay products. CP-violation parameters are obtained from the asymmetry in the
distribution of the proper-time intervals between the two B decays. We obtain
S_Kspi0gamma = -0.58 +0.46-0.38(stat) +-0.11(syst) and A_Kspi0gamma = +0.03
+-0.34(stat) +-0.11(syst), for the Kspi0 invariant mass covering the full range
up to 1.8 GeV/c^2. We also measure the CP-violation parameters for the case B0
-> K*0(-> Kspi0) gamma and obtain S_K*0gamma = -0.79 +0.63-0.50(stat) +-
0.10(syst) for A_K*0gamma fixed at 0.


title:
Longitudinal polarization of $\Lambda$ and $\bar\Lambda$ in
  deep-inelastic scattering at COMPASS

abstract:
  Production of $\Lambda$ and $\bar\Lambda$ hyperons in deep-inelastic
scattering of 160 GeV/c polarized muons is under study in the COMPASS (CERN
NA58) experiment. Preliminary results on longitudinal polarization of the
hyperons from the data collected during the 2002 run are presented.


title: Deeply virtual Compton scattering: results & future

abstract:
  Access to Generalised Parton Distributions (GPDs) through Deeply Virtual
Compton Scattering (DVCS) is briefly described. Presently available
experimental results on DVCS are summarized in conjunction with plans for
future measurements.


title:
Measurement of the Branching Fraction and the CP-Violating Asymmetry for
  the Decay B0 --> K0S Pi0

abstract:
  We measure the branching fraction and the CP-violating asymmetry of $B^{0}\to
K_{s}^{0}\pi^{0}$ decays with 227 million $\Upsilon(4S)\to B\bar{B}$ events
collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$
collider at SLAC. We obtain a branching fraction ${\cal B}(B^{0}\to
K^{0}\pi^{0}) = (11.4 \pm 0.9 \pm 0.6) \times 10^{-6}$ and CP-violating
asymmetry parameters $C_{K_{s}^{0}\pi^{0}} = 0.06 \pm 0.18 \pm 0.03$ and
$S_{K_{s}^{0}\pi^{0}} = 0.35^{+0.30}_{-0.33} \pm 0.04$, where the first error
is statistical and the second systematic.


title: Beyond CP violation: hadronic physics at BaBar

abstract:
  I report on recent studies of hadronic physics performed by the BaBar
Collaboration. Emphasis is given to the measurement of the properties of newly
discovered charmed hadrons and to the searches for light and heavy pentaquarks.


title:
Measurement of Polarization and Triple-Product Correlations in B -> phi
  K^* Decays

abstract:
  We present measurements of decay amplitudes and triple-product correlations
in B -> phi K^* decays based on 253 fb^-1 of data recorded at the Upsilon(4S)
resonance with the Belle detector at the KEKB e^+ e^- storage ring. The decay
amplitudes for the three different helicity states are determined from the
angular distributions of final state particles. The longitudinal polarization
amplitudes are found to be 0.45 +- 0.05 +- 0.02 for B^0 -> phi K^{*0} and 0.52
+- 0.08 +- 0.03 for B^+ -> phi K^{*+} decays. CP- and T-odd CP-violating
triple-product asymmetries are measured to be consistent with zero.


title: Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons

abstract:
  The electromagnetic decays of the Sig0(1385) and Lambda(1520) hyperons were
studied in photon-induced reactions gamma p -> K+ Lambda(1116)gamma in the CLAS
detector at the Thomas Jefferson National Accelerator Facility. We report the
first observation of the radiative decay of the Sig0(1385) and a measurement of
the Lambda(1520) radiative decay width. For the Sig0(1385) -> Lambda(1116)gamma
transition, we measured a partial width of 479+/-120(stat)+81-100(sys) keV,
larger than all of the existing model predictions. For the Lambda(1520) ->
Lambda(1116)gamma transition, we obtained a partial width of
167+/-43(stat)+26-12(sys) keV.


title:
Search for a Lorentz invariance violation contribution in atmospheric
  neutrino oscillations using MACRO data

abstract:
  Neutrino-induced upward-going muons in MACRO have been analysed in terms of
relativity principles violating effects, keeping standard mass-induced
atmospheric neutrino oscillations as the dominant source of nu_mu -> nu_tau
transitions. The data disfavor these exotic possibilities even at a
sub-dominant level, and stringent 90% C.L. limits are placed on the Lorentz
invariance violation parameter |Delta v| < 6 * 10^(-24) at sin2theta_v = 0 and
|Delta v| < 2.5--5 * 10^(-26) at sin2theta_v = +/-1. These limits can also be
re-interpreted as upper bounds on the parameters describing violation of the
Equivalence Principle.


title: Jet Production at HERA and Measurements of the Strong Coupling Constant

abstract:
  Measurements of HERA that explore the parton dynamics at low Bjorken x are
presented together with precise determinations of the strong coupling constant
alpha_s. Calculations at next to leading order using the DGLAP evolution fail
to describe the data at low x and forward jet pseudorapidities. The alpha_s
measurements at HERA are in agreement with the world average and have very
competitive errors.


title:
Simulations of neutron background in a time projection chamber relevant
  to dark matter searches

abstract:
  Presented here are results of simulations of neutron background performed for
a time projection chamber acting as a particle dark matter detector in an
underground laboratory. The investigated background includes neutrons from rock
and detector components, generated via spontaneous fission and (alpha, n)
reactions, as well as those due to cosmic-ray muons. Neutrons were propagated
to the sensitive volume of the detector and the nuclear recoil spectra were
calculated. Methods of neutron background suppression were also examined and
limitations to the sensitivity of a gaseous dark matter detector are discussed.
Results indicate that neutrons should not limit sensitivity to WIMP-nucleon
interactions down to a level of (1 - 3) x 10^{-8} pb in a 10 kg detector.


title:
Measurement of Branching Fraction and CP-Violating Asymmetry for
  B->omegaKs

abstract:
  We present a preliminary measurement of the branching fraction and
CP-violating parameters S and C for the decay B->omegaKs. The data sample
corresponds to 232x10^6 BBbar pairs produced from e+e- annihilation at the
Upsilon(4S) resonance. We measure B(omegaK0)=(5.9+/-1.0+/-0.4)x10^-6,
S=0.50+0.34-0.38+/-0.02 and C=-0.56+0.29-0.27+/-0.03.


title: Pentaquarks: review of the experimental evidence

abstract:
  Pentaquarks, namely baryons made by 4 quarks and one antiquark have been
predicted and searched for since several decades without success. Theoretical
and experimental advances in the last 2 years led to the observation of a
number of pentaquark candidates. We review the experimental evidence for
pentaquarks as well as their non-observations by some experiments, and discuss
to which extend these sometimes contradicting informations may lead to a
consistent picture.


title:
Review of the experimental evidence on pentaquarks and critical
  discussion

abstract:
  We review and discuss the experimental evidence on predicted baryonic states
made by 4 quarks and one antiquark, called pentaquarks. Theoretical and
experimental advances in the last few years led to the observation of
pentaquark candidates by some experiments, however with relatively low
individual significance. Other experiments did not observed those candidates.
Furthermore, the masses of the $\theta^+$(1540) candidates exhibit a large
variation in different measurements. We discuss to which extend these
contradicting informations may lead to a consistent picture.


title: Search for B -> J/psi D Decays

abstract:
  We report a search for B -> J/psi D decays, based on a sample of 124 10^6
BBbar events collected with the BABAR detector at the PEP-II storage ring of
the Stanford Linear Accelerator Center. No significant signal is found. We
obtain upper limits on the branching fractions of 1.3 10^{-5} for B0 -> J/psi
D0bar and 1.2 10^{-4} for B+ -> J/psi D+ at 90% confidence level.


title:
Measurement of the Resonance Parameters of the $\chi_{1}(1^3P_1)$ and
  $\chi_{2}(1^3P_2)$ States of Charmonium formed in Antiproton-Proton
  Annihilations

abstract:
  We have studied the $^3P_J$ ($\chi_c)$ states of charmonium in formation by
antiproton-proton annihilations in experiment E835 at the Fermilab Antiproton
Source. We report new measurements of the mass, width, and $B(\chi_{cJ} \to
\bar{p} p) \times \Gamma(\chi_{cJ} \to J/\psi + anything)$ for the $\chi_{c1}$
and $\chi_{c2}$ by means of the inclusive reaction $\bar{p}p \to \chi_{cJ}
  \to J/\psi + anything \to (e^{+}e^{-}) +anything $. Using the subsample of
events where $\chi_{cJ} \to \gamma + J/\psi \to \gamma + (e^{+}e^{-}) $ is
fully reconstructed, we derive $B(\chi_{cJ} \to \bar p p)\times
\Gamma(\chi_{cJ} \to J/\psi + \gamma) $. We summarize the results of the E760
(updated) and E835 measurements of mass, width and $ B(\chi_{cJ} \to \bar{p}p)
\Gamma(\chi_{cJ} \to J/\psi+\gamma)$ (J=0,1,2) and discuss the significance of
these measurements.


title:
Measurement of Time-Dependent CP-Violating Asymmetries in $B_0 \to
  K_sK_sK_s$ Decay

abstract:
  We present a measurement of CP-violation parameters in the B0 -> KsKsKs decay
based on a sample of 275 x 10^6 BBbar pairs collected at the Upsilon(4S)
resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider.
One neutral B meson is fully reconstructed in the decay B0 -> KsKsKs, and the
flavor of the accompanying B meson is identified from its decay products.
CP-violation parameters are obtained from the asymmetry in the distributions of
the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/-
0.20(syst) and A = +0.54 +/- 0.34(stat) +/- 0.09(syst).


title: The Design and Performance of the MINERvA Detector

abstract:
  The MINERvA experiment is designed to make precision measurements of various
neutrino cross sections in the low energy regime. We describe the detector and
give the performance of some of the measured quantities.


title: B physics at the DO Experiment at Fermilab

abstract:
  We discuss recent $B$ physics results from the D{\O}experiment at Fermilab.
The results presented here use data sets with integrated luminosities ranging
from $\sim 200-440 $ pb$^{-1}$, collected at the Tevatron, between April 2002
and August 2004, at a center of mass energy of $p {\bar p}$ collisions of 1.96
TeV


title:
Deep Exclusive Scattering and Generalized Parton Distributions :
  Experimental Review

abstract:
  Since the Generalized Parton Distribution theoretical framework was
introduced in the late 90's, a few published and numerous preliminary results
from Deep Exclusive Scattering (DES) have been extracted from non-dedicated
experiments at HERA and Jefferson Lab. We review most of these results, comment
on the ongoing dedicated research in this topic and conclude with the
expectations from the next generation of experiments in the near future.


title: Measurement of the Branching Fractions for J/psi to ell^+ ell^-

abstract:
  We present measurements of the branching fractions for J/psi --> e+e- and
mu+mu- using 3M psi(2S) decays collected with the CLEO detector operating at
the CESR e+e- collider. We obtain B(J/psi --> e+e-) = (5.945 +- 0.067 +- 0.042
)% and B(J/psi --> mu+mu-) = (5.960 +- 0.065 +- 0.050)%, leading to an average
of B(J/psi --> l+l-) = (5.953 +- 0.056 +- 0.042)% and a ratio of B(J/psi -->
e+e-) / B(J/psi --> mu+mu-) = (99.7 +- 1.2 +- 0.6)%, all consistent with, but
more precise than, previous measurements.


title: Branching Fractions for psi(2S) to J/psi Transitions

abstract:
  We describe new measurements of the inclusive and exclusive branching
fractions for Psi(2S) transitions to J/Psi using e+e- collision data collected
with the CLEO detector operating at CESR. All branching fractions and ratios of
branching fractions reported here represent either the most precise
measurements to date or the first direct measurements. Indirectly and in
combination with other CLEO measurements, we determine B(ChicJ --> gamma J/Psi)
and B(Psi(2S) --> light hadrons).


title:
A Network of Neutral Current Spherical TPC's for Dedicated Supernova
  Detection

abstract:
  The coherent contribution of all neutrons in neutrino nucleus scattering due
to the neutral current offers a realistic prospect of detecting supernova
neutrinos. As a matter of fact. for a typical supernova at 10 kpc, about 1000
events are expected usinga spherical gaseous detector of radius 4 m
andemploying Xe gas at a pressure of 10 Atm. We propose a world wide network of
several such simple, stable and low cost supernova detectors with a running
time of a few centuries.


title: Observation of p pbar pi^0 and p pbar eta in psi' decays

abstract:
  The processes psi'-->p pbar pi^0 and psi'-->p pbar eta are studied using a
sample of 14 million psi' decays collected with the Beijing Spectrometer at the
Beijing Electron-Positron Collider. The branching fraction of psi'-->p pbar
pi^0 is measured with improved precision as (13.2\pm 1.0\pm 1.5)\times 10^{-5},
and psi'-->p pbar eta is observed for the first time with a branching fraction
of (5.8\pm 1.1\pm 0.7)\times 10^{-5}, where the first errors are statistical
and the second ones are systematic.


title: NOSTOS: a spherical TPC to detect low energy neutrinos

abstract:
  A novel low-energy ($\sim$few keV) neutrino-oscillation experiment NOSTOS,
combining a strong tritium source and a high pressure spherical Time Projection
Chamber (TPC) detector 10 m in radius has been recently proposed. The
oscillation of neutrinos of such energies occurs within the size of the
detector itself, potentially allowing for a very precise (and rather
systematics-free) measure of the oscillation parameters, in particular, of the
smaller mixing angle $\theta_{13}$, which value could be determined for the
first time. This detector could also be sensitive to the neutrino magnetic
moment and be capable of accurately measure the Weinberg angle at low energy.
The same apparatus, filled with high pressure Xenon, exhibits a high
sensitivity as a Super Nova neutrino detector with extra galactic sensitivity.
The outstanding benefits of the new concept of the spherical TPC will be
presented, as well as the issues to be demonstrated in the near future by an
ongoing R&D. The very first results of small prototype in operation in Saclay
are shown.


title:
Search for Signal on Percolation Cluster Formation in Nucleus-Nucleus
  Collisions at Relativistic Energies

abstract:
  The appearance of the strongly interacting matter mixed phase (MP)has been
suggested to consider to understand qualitatively the regime change existence
in the behavior of some centrality depending characteristics of events. The MP
has been predicted by QCD for the temperatures around the critical temperature
Tc and could be formed as a result of nucleon percolation in the density
nuclear matter. Our main goal is to get a new experimental confirmation of the
percolation cluster formation as an accompanying effect of the MP formation. To
reach the goal, the experimental data on Kr+Em - reaction at 0.95 GeV/nuc and
Au+Em - reaction at 10.6 GeV/nucl. with a number of target fragments N_h > 8,
have been analyzed. The behavior of the distributions of the target and the
projectile fragments has been studied. The experimental data have been compared
of the data coming from the cascade-evaporation model. We can conclude that: --
the centrality of the collision could be defined as a number of the target
g-fragments in Kr+Em reactions at energies 0.95 A GeV/nucl and as a number of
projectile F-fragments with Z>=1 in Au + Em reactions at energies 10.6 A
GeV/nucl; -- the formation of the percolation cluster sufficiently influences
the characteristics of nuclear fragments; -- there are points of the regime
changes in the behavior of some characteristics of $s$-particles as a function
of centrality which could be qualitatively understood as a result of the big
percolation cluster formation.