title:
Manifestation of transient effects in fission induced by relativistic
  heavy-ion collisions

abstract:
  We examine the manifestation of transient effects in fission by analysing
experimental data where fission is induced by peripheral heavy-ion collisions
at relativistic energies. Available total nuclear fission cross sections of
238U at 1 A GeV on gold and uranium targets are compared with a
nuclear-reaction code, where transient effects in fission are modelled using
different approximations to the numerical time-dependent fission-decay width: a
new analytical description based on the solution of the Fokker-Planck equation
and two widely used but less realistic descriptions, a step function and an
exponential-like function. The experimental data are only reproduced when
transient effects are considered. The deduced value of the dissipation strength
depends strongly on the approximation applied for the time-dependent
fission-decay width and is estimated to be of the order of 2x10**21 s**(-1). A
careful analysis sheds severe doubts on the use of the exponential-like
in-growth function largely used in the past. Finally, we discuss which should
be the characteristics of experimental observables to be most sensitive to
transient effects in fission


title:
Evolution of the nuclear modification factors with rapidity and
  centrality in d+Au collisions at $\sqrt{s_{NN}} = 200 GeV

abstract:
  We report on a study of the transverse momentum dependence of nuclear
modification factors $R_{dAu}$ for charged hadrons produced in deuteron + gold
collisions at $\sqrt{s_{NN}}= 200$GeV, as a function of collision centrality
and of the pseudorapidity ($\eta = 0,1,2.2,3.2$) of the produced hadrons. We
find significant and systematic decrease of $R_{dAu}$ with increasing rapidity.
The midrapidity enhancement and the forward rapidity suppression are more
pronounced in central collisions relative to peripheral collisions. These
results are relevant to the study of the possible onset of gluon saturation at
RHIC energies.


title:
New signatures on dissipation from fission induced by relativistic
  heavy-ion collisions

abstract:
  Fissile nuclei with small shape distortion relative to the ground-state
deformation and with low angular momentum were produced in peripheral heavy-ion
collisions. Under the conditions of small shape distortions and low angular
momentum, the theoretical description of the fission process can be
considerably simplified, and the relevant information on dissipation can be
better extracted than in conventional experiments based on fusion-fission
reactions. In addition, this experimental approach induces very high excitation
energies, a condition necessary to observe transient effects. The experimental
data were taken at GSI using a set-up especially conceived for fission studies
in inverse kinematics. This set-up allowed determining three observables whose
sensitivity to dissipation was investigated for the first time: the total
fission cross sections of 238U at 1 A GeV as a function of the target mass,
and, for the reaction of 238U at 1 A GeV on a (CH2)n target, the partial
fission cross sections and the partial charge distributions of the fission
fragments. The comparison of the new experimental data with a reaction code
adapted to the conditions of the reactions investigated leads to clear
conclusions on the strength of dissipation at small deformation where the
existing results are rather contradictory.


title: Anisotropic flow in the forward directions at sqrt(s_NN) = 200 GeV

abstract:
  The addition of the two Forward TPCs to the STAR detector allows one to
measure anisotropic flow at forward pseudorapidities. This made possible the
first measurement of directed flow at collision energies of sqrt(s_NN) = 200
GeV. PHOBOS' results on elliptic flow at forward rapidities were confirmed, and
the sign of v2 was determined to be positive for the first time at RHIC
energies. The higher harmonic, v4, is consistent with the recently suggested
v2^2 scaling behavior.


title: Anti-d and Anti-He Production in Au+Au Collisions at RHIC

abstract:
  Ultra-relativistic Au+Au collisions at RHIC ($\sqrt{s}$=130, 200 GeV) are
used to study production of rare anti-nuclei. These clusters of anti-nucleons
are formed by coalescence, i.e. overlapping wave functions of anti-nucleons.
The coalescence coefficients $B_2$ for Anti-$d$ and $B_3$ for Anti-$^3He$ are
determined, and used to derive the fireball radius.


title: Pentaquark Search in Relativistic Heavy Ion Collisions with STAR

abstract:
  We report on the progress of the pentaquark searches by the STAR
collaboration in p+p, d+Au, and Au+Au at $s_{NN}=\sqrt{200}$ GeV collisions
through one of the decay modes of $\Theta^{+}\to p+K_{s}^{0}$. $\Theta^{+}$
state is an exotic baryon with strangeness S=1 and is the lightest isospin
member of the expected antidecuplet. We compare our techniques for the
pentaquark search with those for the short-lived resonances. These results were
presented as a poster at Quark Matter 2004.


title:
$\Delta$, $K^{*}$ and $\rho$ Resonance Production and Their Probing of
  Freeze-out Dynamics at RHIC

abstract:
  We report the measurements of the transverse momentum spectra and invariant
mass distributions of $\Delta$(1232)$\to \pi p$, $K^*$(892)$^{0,\pm} \to \pi K$
and $\rho$(770)$^{0} \to \pi^{+} \pi^{-}$ in Au+Au and p+p collisions at
$\sqrt{s_{NN}}$=200 GeV using the STAR TPC at RHIC. These resonances provide
sensitive probes to examine the evolution dynamics in the hadronic medium
through their decay and regeneration processes. The particle ratios of $K^*/K$,
$K^*/\phi$, $\Delta$/p and $\rho/\pi$, the $K^*$, $\rho$ and $\Delta$ apparent
masses and the dependence of these quantities on centrality provide evidence of
dynamical interaction and re-scattering between hadrons close to freeze-out.
The dependence of resonance yields on the strength of their hadronic cross
sections and the lifetime between the freeze-outs will also be discussed. In
the intermediate $p_{T}$ region ($2<p_T<4$ GeV/c), the nuclear modification
factors ($R_{CP}$ and $R_{AA}$) of $K^*$ are similar to those of $K_{S}$ and
smaller than those of baryons ($\Lambda$). In the intermediate $p_{T}$ region,
no strong dependence on the particle masses is seen in the data.


title:
In-medium minijet dissipation in Au+Au collisions at $\sqrt{s_{NN}}$ =
  130 and 200 GeV studied with charge-independent two-particle number
  fluctuations and correlations

abstract:
  Medium effects on charged-particle production are studied using three
analysis techniques. We find angular collinearity and number correlations on
$p_t$ at moderate $p_t<3$ GeV/$c$. In this $p_t$ range abundant multiplicities
enable precision measurements of correlations of non-identified hadrons for
kinematic variables ($p_t$,$\eta$,$\phi$). Methods include (1) direct
construction of two-particle correlation functions, (2) inversion of the
bin-size dependence of non-statistical multiplicity fluctuations and (3)
two-dimensional discrete wavelet analysis. Two-particle correlations on $p_t$
exceed expectations from a model of equilibrated events with fluctuating global
temperature. A correlation excess at higher $p_t$ is interpreted as final-state
remnants of initial-state semi-hard collisions. Lower-$p_t$ correlations
exhibit a saddle structure varying with centrality. Variations in the forms and
strengths of low and high $p_t$ correlations with centrality suggest transport
of semi-hard collision products into the lower $p_t$ region as a manifestation
of in-medium dissipation of minijets. Correlations on $p_t$ can be associated
with angular correlations on ($\eta$,$\phi$), using analysis methods (1), (2)
or (3). In particular, wavelet analysis (3) is performed in the ($\eta$,$\phi$)
space in bins of $p_t$ ($<2$ GeV/$c$). Observed angular correlation structures
include those attributed to quantum correlations and elliptic flow, as well as
a localized structure, increasing in amplitude with $p_t$, and presumed to
originate with minijets. That structure evolves with increasing centrality in a
way which also suggests dissipation, including an increased correlation length
on $\eta$ which may be related to the influence of a longitudinally expanding
medium on minijet fragmentation.


title: Pion Interferometry from pp and dAu Collisions at RHIC

abstract:
  Pion interferometry results from pp and dAu collisions at $\sqrt{s}=200$ GeV
are presented using data from the STAR detector at RHIC. Radii from
three-dimensional correlation functions are studied as a function of transverse
mass. The HBT results from pp and dAu collisions are compared to pion HBT from
AuAu reactions, also taken at STAR.


title:
Correlation of high energy photons and charged particles in p+p and d+Au
  collisions at $\sqrt{s}=200$ GeV

abstract:
  Azimuthal correlations between high energy photons from $\pi^0$ decay
($p_T^{\gamma} < 10.5$ GeV) and charged hadrons ($p_T^{hadron}$ above a
threshold of 2, 3 or 4 GeV/c) have been measured in p+p and d+Au collisions at
$\sqrt{s}=200$ GeV. Clear jet-like correlations are observed at $\Delta\phi=0$
and 180 degrees, with peak widths decreasing with increasing $p_T^{hadron}$.
Jet $<j_T>$ and $\sqrt{< k_T^2 >}$ in d+Au collisions are deduced from the
distributions.
  {\it These results are presented in Quark Matter 2004 poster session.


title: Probing collision dynamics at RHIC

abstract:
  Measurements of a variety of hadron species in pp and Au+Au collisions at 200
GeV are presented and studied within the framework of chemical and local
kinetic equilibrium models. The extracted chemical and final kinetic freeze-out
temperatures and collective flow velocities are discussed as function of
centrality. The results suggest that Au+Au collisions of various centralities
at RHIC always evolve toward the same temperature at chemical freeze-out,
followed by cooling and expansion toward kinetic freeze-out.


title:
Systematics of global event properties in p-p and d-Au collisions at
  Sqrt(s)=200GeV

abstract:
  The spectra of identified charged particles were studied as a function of
multiplicity at midrapidity in p-p and d-Au collisions and compared to Au-Au
collisions at 200 GeV. The spectra of heavier particles in the most central
d-Au collisions and in the highest multiplicity p-p collisions are harder than
in peripheral Au-Au collisions. The spectra were studied within the blast wave
model framework. The extracted kinetic freeze out temperature smoothly
decreases, while the average flow velocity parameter increases with increasing
charged multiplicity. The particle ratios of kaon/pion and antiproton/pion show
moderate change with increasing charged multiplicity. The kaon to pion ratio in
the highest multiplicity p-p collisions is below the ratio in central Au-Au.


title:
Study of the transverse mass spectra of strange particles in Pb-Pb
  collisions at 158 A GeV/c

abstract:
  The NA57 experiment has collected high statistics, high purity samples of
\PKzS and \PgL, $\Xi$ and $\Omega$ hyperons produced in Pb-Pb collisions at 158
$A$ GeV/$c$. In this paper we present a study of the transverse mass spectra of
these particles for a sample of events corresponding to the most central 53% of
the inelastic Pb-Pb cross-section. We analyse the transverse mass distributions
in the framework of the blast-wave model for the full sample and, for the first
time at the SPS, as a function of the event centrality.


title:
$\Lambda$ Production at High Rapidity in d+Au Collisions at
  $\sqrt{s_{NN}} = 200$ GeV

abstract:
  We present first preliminary studies of $\Lambda$ and $\bar{\Lambda}$
production in the pseudorapidity region $2.5 < |\eta| < 4$, covered by the
forward radial-drift TPCs (FTPCs) in STAR. The FTPCs provide momentum and
charge determination but no particle identification, making the use of
combinatorial methods and background subtraction necessary for $\Lambda$
identification.
  The $\bar{\Lambda}/\Lambda$ ratio measured at high rapidity is compared to
the ratio obtained at mid-rapidity with the STAR TPC. Differences in the ratio
at positive and negative rapidity point to an asymmetry in particle and
antiparticle production in d+Au collisions.


title:
Azimuthal anisotropy and correlations in p+p, d+Au and Au+Au collisions
  at 200 GeV

abstract:
  We present the first measurement of directed flow ($v_1$) at RHIC. $v_1$ is
found to be consistent with zero at pseudorapidities $\eta$ from -1.2 to 1.2,
then rises to the level of a couple of percent over the range $2.4 < |\eta| <
4$. The latter observation is similar to data from NA49 if the SPS rapidities
are shifted by the difference in beam rapidity between RHIC and SPS.
Back-to-back jets emitted out-of-plane are found to be suppressed more if
compared to those emitted in-plane, which is consistent with {\it jet
quenching}. Using the scalar product method, we systematically compared
azimuthal correlations from p+p, d+Au and Au+Au collisions. Flow and non-flow
from these three different collision systems are discussed.


title: Azimuthal anisotropy: the higher harmonics

abstract:
  We report the first observations of the fourth harmonic (v_4) in the
azimuthal distribution of particles at RHIC. The measurement was done taking
advantage of the large elliptic flow generated at RHIC. The integrated v_4 is
about a factor of 10 smaller than v_2. For the sixth (v_6) and eighth (v_8)
harmonics upper limits on the magnitudes are reported.


title:
Neutral strange particle production at mid unit rapidity in p+p
  collisions at sqrt(s) = 200 GeV

abstract:
  We briefly discuss the methods of analysing reconstructed neutral strange
particles in p+p collision data measured at sqrt(s) = 200 GeV taken using the
Solenoidal Tracker At RHIC (STAR) detector. We present spectra for K0 short,
lambda and anti-lambda as a function of pT and multiplicity, and compare to
previous high energy p+pbar collision data. The two component nature of the
spectra suggests contributions from hard and soft processes, and the observed
increase of mean pT with multiplicity indicates a growing contribution from the
hard processes. The work described herein was presented as a poster at the
Quark Matter 2004 conference.


title: <pt> Systematics and mt-Scaling

abstract:
  An enhancement in the number of strange particles produced in relativistic
heavy ion collisions is expected to coincide with the formation of a deconfined
state of partonic matter. Measurements of transverse momentum spectra for
strange particles emerging from p+p collisions are used as a baseline to which
similar measurements from heavy ion collisions are compared. In addition,
several observations from p+p collisions, such as the variation of <pt> with
particle mass and with event multiplicity, are interesting in their own right.
We present measurements of the transverse momentum spectra and <pt> systematics
for strange and non-strange particles from p+p collisions at sqrt{s}=200 GeV.
We show the dependence of the <pt> on measured charged multiplicity and on
particle mass. We will also demonstrate the ability to scale the transverse
mass spectra of various species onto a single universal curve for our p+p data
(an effect known as mt-scaling) and the failure of this scaling when applied to
our Au+Au data. The work presented here was presented as a poster at Quark
Matter 2004.


title:
Energy dependence of hyperon production in nucleus-nucleus collisions at
  SPS

abstract:
  A measurement of strange baryon and antibaryon production in Pb-Pb collisions
has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 A
GeV/c beam momentum. Results on $\Lambda$, $\Xi$ and $\Omega$ hyperon yields at
mid-rapidity in the most central 53% of Pb-Pb collisions at 40 A GeV/c are
presented and compared with those obtained at higher energy, in the same
collision centrality range. The $\Lambda$ and $\Xi^-$ yields per unit rapidity
stay roughly constant while those of $\Omega^-$, $\bar\Lambda$, $\bar\Xi^+$ and
$\bar\Omega^+$ increase when going to the higher SPS energy. Hyperon yields at
the SPS are compared with those from the STAR experiment in $\sqrt{s_{NN}}$ =
130 GeV Au-Au collisions at RHIC.


title: Report from NA49

abstract:
  The most recent data of NA49 on hadron production in nuclear collisions at
CERN SPS energies are presented. Anomalies in the energy dependence of pion and
kaon production in central Pb+Pb collisions are observed. They suggest that the
onset of deconfinement is located at about 30 AGeV. Large multiplicity and
transverse momentum fluctuations are measured for collisions of intermediate
mass systems at 158 AGeV. The need for a new experimental programme at the CERN
SPS is underlined.


title:
PHENIX measurement of high p_T particles in Au+Au and d+Au collisions at
  sqrt{s_{NN}} = 200 GeV

abstract:
  We present new results on the production of charged hadrons and neutral pions
in Au+Au and d+Au collisions at sqrt{s_{NN} = 200 GeV, measured within the
PHENIX experiment. We observe the opposite centrality dependence when comparing
the two collision systems: an increase with centrality compared to the binary
scaled yield from p+p collisions in d+Au and a decrease with centrality in
Au+Au.


title: Flow in Au+Au Collisions at RHIC

abstract:
  The study of flow can provide information on the initial state dynamics and
the degree of equilibration attained in heavy ion collisions. This contribution
presents results for both elliptic and directed flow as determined from data
recorded by the PHOBOS experiment in Au+Au runs at RHIC at sqrt(sNN) = 19.6,
130 and 200 GeV. The PHOBOS detector provides a unique coverage in
pseudorapidity for measuring flow at RHIC. The systematic dependence of flow on
pseudorapidity, transverse momentum, centrality and energy is discussed.


title: Resonance Production

abstract:
  Recent results on rho(770)^0, K(892)^*0, f_0(980), phi(1020), Delta(1232)^++,
and Lambda(1520) production in A+A and p+p collisions at SPS and RHIC energies
are presented. These resonances are measured via their hadronic decay channels
and used as a sensitive tool to examine the collision dynamics in the hadronic
medium through their decay and regeneration. The modification of resonance
mass, width, and shape due to phase space and dynamical effects are discussed.


title:
Elliptic flow of multi-strange baryons Xi and Omega in Au+Au collisions
  at sqrt(s_NN)=200 GeV

abstract:
  The first measurement of the elliptic transverse flow for multi-strange
baryons Xi and Omega in high energy heavy ion collisions is presented, which
may indicate the presence of partonic collectivity. A hydrodynamically inspired
model fit to the transverse momentum spectra and elliptic flow of Xi- and
AntiXi+ indicates that these particles might be emitted from the system at a
high temperature (~150 MeV) with significant radial transverse flow and that
the emitting system is spatially asymmetric.


title: Jet Correlations of Identified Particles in PHENIX

abstract:
  Azimuthal two particle correlations at intermediate $p_{T}$ with one of the
particles identified have been measured at PHENIX. Trigger ($2.5 < p_{T} < 4.0
GeV/c$) baryons and mesons show little significant difference in the number of
associated particles ($1.7 < p_{T} < 2.5 GeV/c$) independent of centrality. For
inclusive hadron triggers with $2.5 < p_{T} < 4.0 GeV/c$, associated
fragmentation particles with $1.0 < p_{T} < 2.5 GeV/c$ show a higher baryon to
meson ratio on the away side.


title:
$\pi/K/p$ production and Cronin effect from p+p, d+Au and Au+Au
  collisions at $\sqrt{s_{NN}}= 200$ GeV from the PHENIX experiment

abstract:
  We present results on identified particle production in p+p, d+Au and Au+Au
collisions at $\sqrt{s_{NN}} = 200$ GeV at mid-rapidity measured by the PHENIX
experiment. The centrality and flavor dependence of the Cronin effect in d+Au
collisions is measured. The Cronin effect for the protons in d+Au is larger
than that for the pions, but not large enough to account for the ``anomalous''
proton to pion ratio in central Au+Au collisions.


title:
$J/\psi$ production and nuclear effects for d+Au and p+p collisions in
  PHENIX

abstract:
  PHENIX has measured $J/\psi$ production at backward, central and forward
rapidities both in p+p and d+Au collisions at $\sqrt{s_{NN}}=200$ GeV during
the third run of the RHIC collider. From the p+p collisions, we measure the
total J/$\psi$ cross section. From the d+Au collisions, we compute the nuclear
modification factor versus transverse momentum, rapidity and centrality. All
results presented here are preliminary.


title: Full Jet Reconstruction in d+Au and p+p Collisions at RHIC

abstract:
  The STAR detector is well suited for investigating jet production at RHIC. It
has a large acceptance for both charged particles and electromagnetic
radiation, so that reconstructed jets contain a large fraction of the particles
descending from an initial hard scattered parton. Inclusive jets can be used to
measure $j_T$, which characterizes the transverse jet shape. Di-jet angular
distributions in d+Au and p+p collisions at RHIC provide a determination of
intrinsic and nuclear $k_{T}$. The most recent results from this analysis based
on year 2003 d+Au and p+p data are presented and compared to results of a
di-hadron correlation study.


title: Highlights from STAR

abstract:
  Selected results from the STAR collaboration are presented. We focus on
recent results on jet-like correlations, nuclear modification factors of
identified hadrons, elliptic flow of multi-strange baryons $\Xi$ and $\Omega$,
and resonance yields. First measurements of open charm production at RHIC are
presented.


title:
Pseudorapidity Distributions of Charged Particles in d + Au and p + p
  Collisions at $\sqrt{s_{_{NN}}}$ = 200GeV

abstract:
  The measured pseudorapidity distributions of primary charged particles are
presented for d + Au and p + p collisions at ${\sqrt{s_{_{NN}}} =}$ 200 GeV
over a wide pseudorapidity range of ${\rm \mid \eta \mid \le}$ 5.4. The results
for d + Au collisions are presented for minimum-bias events and as a function
of collision centrality. The measurements for p + p collisions are shown for
minimum-bias events. The ratio of the charged particle multiplicity in d + Au
and p + A collisions relative to that for inelastic p + p collisions is found
to depend only on ${< N_{part} >}$, and it is remarkably independent of
collision energy and system mass. The deuteron and gold fragmentation regions
in d + Au collisions are in good agreement with proton nucleus data at lower
energies.


title:
Rapidity and transverse momentum dependence of pion-pion Bose-Einstein
  correlations measured at 20, 30, 40, 80, and 158 AGeV beam energy

abstract:
  Preliminary results on pion-pion Bose-Einstein correlations in central Pb+Pb
collisions measured by the NA49 experiment are presented. Rapidity as well as
transverse momentum dependence of the HBT-radii are shown for collisions at 20,
30, 40, 80, and 158 AGeV beam energy. Including results from AGS and RHIC
experiments only a weak energy dependence of the radii is observed. Based on
hydrodynamical models parameters like lifetime and geometrical radius of the
source are derived from the dependence of the radii on transverse momentum.


title:
Event-by-Event Fluctuations of Particle Ratios in Central Pb+Pb
  Collisions at 20 to 158 AGeV

abstract:
  In the vicinity of the QCD phase transition, critical fluctuations have been
predicted to lead to non-statistical fluctuations of particle ratios, depending
on the nature of the phase transition. Recent results of the NA49 energy scan
program show a sharp maximum of the ratio of K+ to Pi+ yields in central Pb+Pb
collisions at beam energies of 20-30 AGeV. This observation has been
interpreted as an indication of a phase transition at low SPS energies. We
present first results on event-by-event fluctuations of the kaon to pion and
proton to pion ratios at beam energies close to this maximum.


title: New results from the NA57 experiment

abstract:
  The production of hyperons in Pb-Pb and p-Be interaction at 40 A GeV/c beam
momentum has been measured by the NA57 experiment. Strange particle
enhancements at 40 A GeV/c are presented for the first time and compared to
those measured at 158 A GeV/c. The transverse mass spectra of high statistics,
high purity samples of K0_short, Lambda, Xi and Omega particles produced in
Pb-Pb collisions at 158 A GeV/c have been studied in the framework of the
blast-wave model. The dependence of the freeze-out parameters on particle
species and event centrality is discussed.


title:
Event-by-Event Fluctuations at 40, 80, and 158 AGeV/c in Pb+Au
  Collisions

abstract:
  Event-by-event fluctuations of mean pt and net charge in 40, 80, and 158
AGeV/c Pb+Au collisions are presented. The observed dynamical mean pt
fluctuations in central events of about 1 % are very similar to results from
RHIC. The centrality dependence of mean pt fluctuations at 158 AGeV/c shows a
peculiar non-monotonic pattern with respect to the extrapolation from the
fluctuations measured in p+p collisions. Dynamical net charge fluctuations
smaller than the charge conservation limit are observed. After correction for
charge conservation, the measured fluctuation signal in central events is
comparable to RHIC results.


title:
Soft and Hard Interactions in proton + proton collisions at
  sqrt(s)=200GeV

abstract:
  We present a detailed study of particle production at mid-rapidity in proton
+ proton collisions at RHIC for sqrt(s)=200GeV. The transverse momentum spectra
and the <pT> of inclusive hadrons and identified particles as a function of
multiplicity are measured in minimum bias, "soft" and "hard" event classes. It
is found that the multiplicity dependence of <pT> in soft events in proton +
proton collisions does not change from RHIC to Tevetron while there is no such
scaling behavior in minimum-bias and hard events. The baryon and strangeness
production derived from the particle ratios of K-/pi- and Pbar/pi- are measured
to be different in "soft" and "hard" events. These results are compared to
model predictions and those from Au+Au collisions at RHIC.


title:
Energy dependence of {\rm K}$^0_{\rm S}$ and hyperon production at CERN
  SPS

abstract:
  Recent results on K$^0_{\rm S}$ and hyperon production in Pb-Pb collisions at
40 and 158 $A$ GeV/$c$ beam momentum from the NA57 experiment at CERN SPS are
presented. Yields and ratios are compared with those measured by the NA49
experiment, where available. The centrality dependence of the yields and a
comparison with the higher collision energy data from RHIC are discussed.


title:
Differential cross section of the pion-nucleon charge-exchange reaction
  in the momentum range from 148 to 323 MeV/c

abstract:
  Measured values of the differential cross section for pion-nucleon charge
exchange are presented at momenta 148, 174, 188, 212, 238, 271, 298, and 323
MeV/c, a region dominated by the Delta resonance. Complete angular
distributions were obtained using the Crystal Ball detector at the Alternating
Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL). Statistical
uncertainties of the differential cross sections are typically 2-6%, exceptions
being the results at the lowest momentum and at the most forward measurements
of the five lowest momenta. We estimate the systematic uncertainties to be
3-6%.


title: The CLAS Electromagnetic Calorimeter at Large Angles

abstract:
  The study of the response of the two modules of the large-angle
electromagnetic shower calorimeter (LAC) of the CLAS detector to charged and
neutral particles is reported. The results agree very well with the Monte Carlo
simulation. The procedures adopted for the energy and timing calibration are
also discussed, proving that the module geometry allows for simple
self-calibrating energy and timing algorithms.


title:
Non-identical particle correlations in 130 and 200 AGeV collisions at
  STAR

abstract:
  STAR has performed a correlation analyses of pion-kaon and pion-proton pairs
for sqrt(s_NN)=130 AGeV and sqrt(s_NN)=200 AGeV and kaon-proton, proton-Lambda
and pion-Cascade pairs for AuAu collisions sqrt(s_NN)=200 AGeV. They show that
average emission space-time points of pions, kaons and protons are not the
same. These asymmetries are interpreted as a consequence of transverse radial
expansion of the system; emission time differences explain only part of the
asymmetry. Therefore our measurements independently confirm the existence of
transverse radial flow. Furthermore, correlations of strange hyperons is
investigated by performing proton-Lambda and pion-Cascade analyses, giving
estimates of source size at high m_{T}. The strong interaction potential
between (anti-)proton and lambda as well as kaon and proton is investigated.


title:
Determining Beam Parameters in a Storage Ring with a Cylindrical
  Hodoscope using Elastic Proton-Proton Scattering

abstract:
  The EDDA-Detector at the Cooler-Synchrotron COSY/J\"ulich has been operated
with an internal CH$_2$ fiber target to measure proton-proton elastic
scattering differential cross sections. For the data analysis knowledge of beam
parameters, like position, width and angle, are indispensable. We have
developed a method to obtain these values with high precision from the
azimuthal and polar angles of the ejectiles only, by exploiting the coplanarity
of the two final state protons with the beam and the kinematic correlation. The
formalism is described and results for beam parameters obtained during beam
acceleration are given.


title: Radiation Damage of Polypropylene Fiber Targets in Storage Rings

abstract:
  Thin polypropylene (CH$_2$) fibers have been used for internal experiments in
storage rings as an option for hydrogen targets. The change of the hydrogen
content due to the radiation dose applied by the circulating proton beam has
been investigated in the range $1\cdot10^6$ to $2\cdot10^8$~Gy at beam momenta
of 1.5 to 3 GeV/c by comparing the elastic pp-scattering yield to that from
inelastic p-carbon reactions. It is found that the loss of hydrogen as a
function of applied dose receives contributions from a fast and a slow
component.


title:
A Precision Measurement of pp Elastic Scattering Cross Sections at
  Intermediate Energies

abstract:
  We have measured differential cross sections for \pp elastic scattering with
internal fiber targets in the recirculating beam of the proton synchrotron
COSY. Measurements were made continuously during acceleration for projectile
kinetic energies between 0.23 and 2.59 GeV in the angular range $30 \leq
\theta_{c.m.} \leq 90$ deg. Details of the apparatus and the data analysis are
given and the resulting excitation functions and angular distributions
presented. The precision of each data point is typically better than 4%, and a
relative normalization uncertainty of only 2.5% within an excitation function
has been reached. The impact on phase shift analysis as well as upper bounds on
possible resonant contributions in lower partial waves are discussed.


title: Search for exotic baryons in double radiative capture on pionic hydrogen

abstract:
  We report a search for low-lying exotic baryons via double radiative capture
on pionic hydrogen. The data were collected at the TRIUMF cyclotron using the
RMC spectrometer by detecting gamma-ray pairs from pion stops in liquid
hydrogen. No evidence was found to support an earlier claim for exotic baryons
of masses 1004 and 1044 MeV/$c^2$. We obtain upper limits on the branching
ratios for double radiative capture via these exotic states of $< 3 \times
10^{-6}$ and $< 4 \times 10^{-6}$ respectively.


title:
Hadron production in the forward and backward rapidities in dAu
  collisions at RHIC

abstract:
  We have developed new techniques to detect hadrons with the PHENIX muon
spectrometers. This allows us to study the centrality dependent nuclear
modification factor $R_{CP}$ with high $p_{T}$ hadrons in both forward (d
direction) and backward (Au direction) rapidities, $1 < |\eta| < 2$, in dAu
collisions at $\sqrt{s_{NN}} = 200 GeV$. Preliminary results show a suppression
(enhancement) of high $p_{T}$ hadron production in central $0-20%$ dAu
collisions relative to the peripheral one ($60-88%$ in centrality) at forward
(backward) rapidity.


title:
Event-by-event average $p_T$ fluctuations in PHENIX: measurements and
  jet contribution simulations

abstract:
  Small, but significant non-random fluctuations in event-by-event average
$p_T$ have been observed in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV by the
PHENIX collaboration at RHIC. These are consistent with being caused by
correlations due to jets at large $p_T$, where the measured suppression must be
included to reproduce the centrality dependence of the non-random fluctuations.


title:
Rapidity Dependence of Charged Hadron Production in Central Au+Au
  Collisions at sqrt(s_nn) = 200 GeV with BRAHMS

abstract:
  We have measured the rapidity distributions dN/dy of pi+/-, K+/- and p,pbar
in central Au+Au collisions at sqrt(s_nn) = 200 GeV. The average rapidity loss
per participant nucleon is 2.0 +/- 0.2 units of rapidity. The strange to
non--strange meson ratios K/pi are found to track variations of the
baryo--chemical potential in energy and rapidity.


title:
Charged Meson Rapidity Distributions in central Au+Au Collisions at
  sqrt(s_nn) = 200 GeV

abstract:
  We have measured rapidity densities dN/dy of pions and kaons over a broad
rapidity range (-0.1 < y < 3.5) for central Au+Au collisions at sqrt(snn) = 200
GeV. These data have significant implications for the chemistry and dynamics of
the dense system that is initially created in the collisions. The full
phase-space yields are 1660 +/- 15 +/- 133 (pi+), 1683 +/- 16 +/- 135 (pi-),
286 +/- 5 +/- 23 (K+) and 242 +/- 4 +/- 19 (K-). The systematics of the strange
to non--strange meson ratios are found to track the variation of the
baryo-chemical potential with rapidity and energy. Landau--Carruthers
hydrodynamic is found to describe the bulk transport of the pions in the
longitudinal direction.


title: Detectors for Energy-Resolved Fast Neutron Imaging

abstract:
  Two detectors for energy-resolved fast-neutron imaging in pulsed broad-energy
neutron beams are presented. The first one is a neutron-counting detector based
on a solid neutron converter coupled to a gaseous electron multiplier (GEM).
The second is an integrating imaging technique, based on a scintillator for
neutron conversion and an optical imaging system with fast framing capability.


title: High Pt Hadron Spectra at High Rapidity

abstract:
  We report the measurement of charged hadron production at different
pseudo-rapidity values in deuteron+gold as well as proton+proton collisions at
$sqrt{s_{NN}}$ = 200GeV at RHIC. The nuclear modification factors $R_{dAu}$ and
$R_{cp}$ are used to investigate new behaviors in the deuteron+gold system as
function of rapidity and the centrality of the collisions respectively.


title:
Development of a compact scintillator hodoscope with wavelength-shifting
  fibre read-out

abstract:
  We report on the prototyping of a plastic scintillator hodoscope with
wavelength-shifting fibre read-out by a multi-anode photomultiplier as part of
the development of a detector for cosmic ray muons to be carried aboard an
aircraft. Light yield and light attenuation measurements on single- and
double-clad wavelength-shifting fibres were performed. Low power,
low-threshold, discriminators were designed. A prototype 16-channel hodoscope
with two planes was built and tested with cosmic rays. After correcting for
geometrical factors a global intrinsic efficiency of $\epsilon > 98$ % was
obtained in both planes. The overall performance of the hodoscope proved it to
be well suited for the {\sc Adler} experiment to measure the high altitude muon
flux.


title: Open Charm Yields in 200 GeV p+p and d+Au Collisions at RHIC

abstract:
  Open charm spectra at mid-rapidity from direct reconstruction of $D^{0}\to
K\pi$ and indirect electron/positron measurements via charm semileptonic decay
in p+p and d+Au collisions at $\sqrt{s_{_{\rm NN}}}$ = 200 GeV are reported.
The combined spectra cover open charm transverse momentum range
$0.1{}^{<}_{\sim}p_{T}{}^{<}_{\sim}6$ GeV/$c$. The electron spectra show
approximate binary scaling between p+p and d+Au collisions. From these two
independent analyses, the differential cross section per nucleon-nucleon
interaction at mid-rapidity for open charm production at RHIC is
$d\sigma^{NN}_{c\bar{c}}/dy$=0.31$\pm$0.04(stat.)$\pm$0.08(syst.) mb. The
next-to-leading-order pQCD calculation underpredicts the charm yields.


title:
Indications of suppressed high p_T hadron production in nucleus-nucleus
  collisions at CERN-SPS

abstract:
  Inclusive pion production at high transverse momenta (p_T > 2 GeV/c) in
nucleus-nucleus (A+A) collisions at CERN SPS (sqrt(s_NN)~20 GeV) is revisited
and systematically compared to all existing proton-proton data in the same
range of center-of-mass energies. The ratio of A+A to p+p pion cross-sections
(nuclear modification factor) for 0-8% central Pb+Pb, Pb+Au and S+Au reactions
does not show a strong enhancement as a function of p_T as previously found,
but is consistent with scaling with the number of nucleon-nucleon (NN)
collisions. Neutral pion yields per NN collision in head-on Pb+Pb reactions are
suppressed, whereas peripheral yields are enhanced. These results together
indicate that some amount of ``jet quenching'' may already be present in
central heavy-ion reactions at sqrt(s_NN)~20 GeV.


title:
Study of Proton Induced Reactions in a Radioactive 129-I Target at
  Ep=660 MeV

abstract:
  Two NaI (85% 129-I and 15% 127-I) targets were exposed to a beam of 660-MeV
protons. Cross sections for formation of 76 residual nuclei were obtained by
the induced activity method. The results are compared with other experimental
data on 127-I and theoretical calculations by eleven models contained in the
codes LAHET3 (using the Bertini+Dresner, ISABEL+Dresner, INCL+Dresner, and
INCL+ABLA options), CASCADE, CEM95, CEM2K, LAQGSM+GEM2, CEM2k+GEM2,
LAQGSM+GEMINI, and CEM2k+GEMINI. Most of the models describe spallation
products with masses close to the target reasonably well while the reliability
of the codes differs greatly in the deep spallation and fission/fragmentation
regions. The difficulties in describing products with A=40-80 by all of the
codes tested here except for CEM2k+GEMINI and LAQGSM+GEMINI is related to the
neglect of fission (and fragmentation) processes for targets as light as 129-I.


title:
The PHENIX measurement of Heavy Flavor via Single Electrons in pp, d-Au,
  and Au-Au collisions at sqrt(s_NN)=200 GeV

abstract:
  The PHENIX experiment at RHIC has measured single electron spectra in
proton-proton, deuteron-gold and gold-gold collisions at sqrt(s_NN)=200 GeV.
The photonic contribution (photon conversions and Daltiz decays) is subtracted
from the inclusive spectra resulting in non-photonic electron spectra. The
principal source of non-photonic electrons is the semi-leptonic decay of charm
and bottom mesons. The implications for heavy flavor production in hot and cold
nuclear systems are discussed.


title:
The rapidity and centrality dependence of nuclear modification factors
  at RHIC - what does bulk particle production tell us about the nuclear
  medium?

abstract:
  The BRAHMS experiment at RHIC has measured the production of charged hadrons
as a function of pseudorapidity and transverse momentum in Au+Au, d+Au and p+p
collisions at a common energy of sqrt(s_NN)=200GeV, and from these spectra we
construct the nuclear modification factors for both ``hot'' and ``cold''
nuclear matter. In this contribution I will show how these factors evolve with
pseudorapidity and collision centrality. We see a Cronin-like enhancement in
d+Au collisions at midrapidity, going to a strong suppression at eta >= 2. In
central Au+Au collisions we find a suppression both at mid- and forward
rapidities that vanishes for peripheral collisions. We interpret this as signs
of several different medium related effects modifying bulk particle production
in Au+Au and d+Au collisions at RHIC energies.


title:
Identified particles at large transverse momenta in STAR in Au+Au
  collisions @ sqrt(s_NN) = 200 GeV

abstract:
  We report measurements of the ratios of identified hadrons (pi,K,p,Lambda) in
Au+Au collisions at sqrt(s_NN) = 200 GeV as a function of both collision
centrality and transverse momentum (p_T). Ratios of anti-baryon to baryon
yields are independent of p_T within 2<p_T <6 GeV/c indicating that, for such a
range, our measurements are inconsistent with theoretical pQCD calculations
predicting a decrease due to a stronger contribution from valence quark
scattering. For both strange and non-strange species, a strong baryon
enhancement relative to meson yields is observed as a function of collision
centrality in this intermediate p_T region, leading to p/pi and Lambda/K ratios
greater than unity. The nuclear modification factor, R_cp (central relative to
peripheral collisions), is used to illustrate the interplay between jet
quenching and hadron production. The physics implications of these measurements
are discussed with reference to different theoretical models.


title: Jets as a Probe of Dense Matter at RHIC

abstract:
  Jet quenching in the matter created in high energy nucleus-nucleus collisions
provides a tomographic tool to probe the medium properties. Recent experimental
results on jet production at the Relativistic Heavy-Ion Collider (RHIC) are
reviewed. Jet properties in p+p and d+Au collisions have been measured,
establishing the baseline for studying jet modification in heavy-ion
collisions. Current progress on detailed studies of high transverse momentum
production in Au+Au collisions is discussed, with an emphasis on dihadron
correlation measurements.


title: Search for the $\bar{\Theta}^- \to $ K$^-$ $\bar{n}$ with PHENIX

abstract:
  The PHENIX experiment at RHIC should be sensitive to decays of the the
anti--pentaquark $\bar{\Theta}^-$ via the K$^-$ $\bar{n}$ channel. Charged
kaons can be identified using the standard tracking and time of flight up to a
momentum of 1.5 GeV/c. Anti--neutron candidates are detected via their
annihilation signal in the highly segmented electromagnetic calorimeter
(EMCal). In order to assess the quality of the anti--neutron identification we
reconstruct the $\bar{\Sigma} \to \bar{n}\pi$. As an additional crosscheck the
invariant mass of K$^+$ $\bar{n}$ is reconstructed where no resonance in the
pentaquark mass range is expected. At the present time no enhancement at the
expected pentaquark mass is observed in dAu collisions at $\sqrt{s_{NN}} = 200
GeV.


title: Light Vector Mesons from dAu in PHENIX

abstract:
  A first measurement of the e+e-decay rate of phi mesons in dAu collisions
from the PHENIX detector at RHIC and its comparison to the K+K- decay channel
is described. The comparison of the two decay channels can be sensitive to
chiral symmetry restoration.


title:
Strange Resonance Production in p+p and Au+Au Collisions at RHIC
  Energies

abstract:
  Resonance yields and spectra from elementary p+p and Au+Au collisions at
$\sqrt{s_{\rm NN}} = $ 200 GeV from the STAR experiment at RHIC are presented
and discussed in terms of chemical and thermal freeze-out conditions. Thermal
models do not adequately describe the yields of the resonance production in
central Au+Au collisions. The approach to include elastic hadronic interactions
between chemical freeze-out and thermal freeze-out suggests a time of $\Delta
\tau>$5 fm/c.


title: Correlations and Fluctuations in STAR

abstract:
  We report measurements for the balance function, transverse momentum
fluctuations, and net charge fluctuations from Au+Au collisions at 20, 130, and
200 GeV as well as p+p and d+Au collisions at 200 GeV using STAR at RHIC. For
Au+Au collisions at 200 GeV, we observe a narrowing of the balance function in
central collisions. We observe dynamic transverse momentum fluctuations at all
incident energies. Observables related to transverse momentum fluctuations and
net charge fluctuations are similar for peripheral Au+Au collisions and
inclusive p+p collisions while central Au+Au collisions deviate significantly
from HIJING predictions.


title:
An Overview of Fluctuation and Correlation Results in Relativistic Heavy
  Ion Collisions

abstract:
  A great deal of recent data on event-by-event fluctuation and correlation
measurements has been released by several experiments at the SPS and RHIC.
Recent results on charge fluctuations, balance functions in pseudorapidity, and
average transverse momentum fluctuations will be reviewed. The results will be
compared to various model predictions after examining contributions to each
observable from known physics processes.


title: PHENIX Direct Photons in 200 GeV p+p and Au+Au Collisions

abstract:
  We present the first positive direct photon results in Au+Au at sqrt{s_NN} =
200 GeV along with initial p+p results at the same energy. The p+p result is
found to be consistent with NLO perturbative QCD predictions within its large
uncertainties. In central Au+Au collisions, an excess over expected background
as large as 200-300% is observed from p_T = 4-12 GeV/c. This large signal is
shown to be consistent with the scaled pQCD photon prediction, together with
suppression of meson background sources.


title: Scanning the phases of QCD with BRAHMS

abstract:
  BRAHMS has the ability to study relativistic heavy ion collisions from the
final freeze-out of hadrons all the way back to the initial wave-function of
the gold nuclei. This is accomplished by studying hadrons with a very wide
range of momenta and angles. In doing so we can scan various phases of QCD,
from a hadron gas, to a quark gluon plasma and perhaps to a color glass
condensate.


title: Active optical fibres in modern particle physics experiments

abstract:
  In modern particle physics experiments wavelength-shifting and scintillating
fibres based on plastic polymers are used for tracking and calorimetry. In this
review the role of photon trapping efficiencies, transmission functions and
signal response times for common multimode active fibres is discussed.
Numerical simulations involving three dimensional tracking of skew rays through
curved fibres demonstrate the characteristics of trapped light. Of practical
interest are the parametrisations of transmission functions and the minimum
permissible radius of curvature. These are of great importance in today's
experiments where high count rates and small numbers of photoelectrons are
encountered. Special emphasis has been placed on the timing resolution of fibre
detectors and its limitation due to variations in the path length of generated
photons.


title: PHENIX Highlights

abstract:
  Recent highlights of measurements by the PHENIX experiment at RHIC are
presented.


title: Measurement of Jet Modification at RHIC

abstract:
  Charged hadrons (0.15 < pt < 4 GeV/c) associated with a large pt trigger
particle (4 < pt < 6 GeV/c) are statistically reconstructed in the large
acceptance STAR TPC for p+p and Au+Au collisions at sqrt(s_NN)=200 GeV.
Preliminary results on transverse momentum distributions of these hadrons are
presented, separately on the near and away side from the trigger particle. An
increase in the multiplicity and total scalar pt of these hadrons from p+p to
central Au+Au collisions is observed. The away side distribution is found to be
significantly softened in central Au+Au with respect to p+p collisions. The
results are consistent with modification of jets in heavy ion collisions at
RHIC.


title: Overview of the results from the BRAHMS experiment

abstract:
  An overview of the most important experimental results obtained in the first
three running years with the BRAHMS experiment from Brookhaven National
Laboratory(USA) is presented. The design of the experiment permits to measure
the interesting physical quantities in a large ranges of rapidity and
transverse momentum. Therefore, properties of hadron production vs rapidity and
transverse momenta are presented.


title:
Production of $e^+e^-$ Pairs Accompanied by Nuclear Dissociation in
  Ultra-Peripheral Heavy Ion Collision

abstract:
  We present the first data on $e^+e^-$ pair production accompanied by nuclear
breakup in ultra-peripheral gold-gold collisions at a center of mass energy of
200 GeV per nucleon pair. The nuclear breakup requirement selects events at
small impact parameters, where higher-order corrections to the pair production
cross section should be enhanced. We compare the pair kinematic distributions
with two calculations: one based on the equivalent photon approximation, and
the other using lowest-order quantum electrodynamics (QED); the latter includes
the photon virtuality. The cross section, pair mass, rapidity and angular
distributions are in good agreement with both calculations. The pair transverse
momentum, $p_T$, spectrum agrees with the QED calculation, but not with the
equivalent photon approach. We set limits on higher-order contributions to the
cross section. The $e^+$ and $e^-$ $p_T$ spectra are similar, with no evidence
for interference effects due to higher-order diagrams.


title: Past, Present and Future of Muonium

abstract:
  Muonium, the atom which consists of a positive muon and an electron, has been
discovered by a team led by Vernon W. Hughes in 1960. It is in many respects
the most ideal atom available from nature. Due to the close confinement in the
bound state muonium can be used as an ideal probe of electro-weak interaction,
including particularly Quantum Electrodynamics, and to search for additional
yet unknown interactions acting on leptons. Recently completed experiments
cover the ground state hyperfine structure, the 1s-2s interval and a search for
spontaneous conversion of muonium to antimuonium. The experiments yield precise
values for the fine structure constant, the muon mass and its magnetic moment.
The results from these precision measurements have provided restrictions for a
number of theories beyond the Standard Model of particle physics. Future
precision experiments will require new and intense sources of muons.


title:
Event anisotropy of identified $\pi^{0}$, photon and electron compared
  to charged $\pi$, $K$, $p$ and deuteron in $\sqrt{s_{NN}}$ = 200 GeV Au+Au at
  PHENIX

abstract:
  We report the recent results of event anisotropy analysis focused on $v_2$ in
$\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions at PHENIX.


title: Quest for a Nuclear Georeactor

abstract:
  Knowledge about the interior of our planet is mainly based on the
interpretation of seismic data from earthquakes and nuclear explosions, and of
composition of meteorites. Additional observations have led to a wide range of
hypotheses on the heat flow from the interior to the crust, the abundance of
certain noble gases in gasses vented from volcanoes and the possibility of a
nuclear georeactor at the centre of the Earth. This paper focuses on a proposal
for an underground laboratory to further develop antineutrinos as a tool to map
the distribution of radiogenic heat sources, such as the natural radionuclides
and the hypothetical nuclear georeactor.


title:
On the possibility to search for double beta decay of initially unstable
  (alpha/beta radioactive) nuclei

abstract:
  Possibilities to search for double beta decay of alpha/beta unstable nuclei,
many of which have higher energy release than "conventional" (beta stable)
double beta decay candidates, are discussed. First experimental half-life
limits on double beta decay of radioactive nuclides from U and Th families
(trace contaminants of the CaWO_4, CdWO_4 and Gd_2SiO_5 scintillators) were
established by reanalyzing the data of low-background measurements in the
Solotvina Underground Laboratory with these detectors (1734 h with CaWO_4,
13316 h with CdWO_4, and 13949 h with Gd_2SiO_5 crystals).


title:
Excitation Energies and Spins of the Yrast Superdeformed Band in
  ^{191}Hg

abstract:
  The excitation energies and spins of the levels in the yrast superdeformed
band of $^{191}$Hg have been determined from two single-step $\gamma$
transitions and the quasi-continuum spectrum connecting the superdeformed and
normal-deformed states. The results are compared with those from theoretical
mean-field calculations with different interactions. A discussion of pairing in
superdeformed states is also included.


title: Hard spectra and QCD matter: experimental review

abstract:
  The most significant experimental results on hadron spectra at large
transverse momentum available at the time of Quark Matter 2004 conference are
reviewed. Emphasis is put on those measurements that provide insights on the
properties of the QCD media, ``Quark Gluon Plasma'' and ``Color Glass
Condensate'', expected to be present in nucleus-nucleus collisions at collider
energies.


title: High-$p_{T}$ electron distributions in d+Au and p+p collisions at RHIC

abstract:
  We present preliminary measurements of electron and positron spectra in d+Au
and p+p collisions at $\sqrt{s_{NN}}=200$ GeV for $1.5 < p_{T} < 7.0$ GeV/c.
These measurements were carried out using the STAR Time Projection Chamber
(TPC) and the Barrel Electromagnetic calorimeter (EMC). Overall hadron
rejection factors in the range of $10^{5}$ have been achieved. In this work we
describe the measurement technique used to discriminate electrons from hadrons
and compare the results for single electron spectra with Pythia based pQCD
calculations for electrons from heavy-quark semi-leptonic decays.


title:
Centrality and pseudorapidity dependence of charged hadron production at
  intermediate p_T in Au + Au collisions at sqrt(s_NN) = 130 GeV

abstract:
  We present STAR measurements of charged hadron production as a function of
centrality in Au + Au collisions at sqrt(s_NN) = 130 GeV. The measurements
cover a phase space region of 0.2 < p_T < 6.0 GeV/c in transverse momentum and
-1 < eta < 1 in pseudorapidity. Inclusive transverse momentum distributions of
charged hadrons in the pseudorapidity region 0.5 < |eta| < 1 are reported and
compared to our previously published results for |eta| < 0.5. No significant
difference is seen for inclusive p_T distributions of charged hadrons in these
two pseudorapidity bins. We measured dN/deta distributions and truncated mean
p_T in a region of p_T > p_T^cut, and studied the results in the framework of
participant and binary scaling. No clear evidence is observed for participant
scaling of charged hadron yield in the measured p_T region. The relative
importance of hard scattering process is investigated through binary scaling
fraction of particle production.


title:
Measurement of the tensor Ayy and vector Ay analyzing powers of the
  deuteron inelastic scattering off berillium at 5.0 GeV/c and 178 mr

abstract:
  Tensor Ayy and vector Ay analyzing powers in the inelastic scattering of
deuterons with the momentum of 5.0 GeV/c on beryllium at an angle of 178 mr in
the vicinity of the excitation of baryonic resonances with masses up to
  1.8 GeV/c^2 have been measured. The Ayy data are in a good agreement with the
previous data obtained at 4.5 and 5.5 GeV/c. The results of the experiment are
compared with the predictions of the plane wave impulse approximation and
\omega-meson exchange models.


title:
The Coulomb Dissociation of 8B and a Critical Assessment of the Seattle
  S17(0) Result

abstract:
  The Coulomb dissociation of 8B, measured with high precision by the GSI
group, is in excellent agreement with the astrophysical cross section factor
(S17) measured by the Weizmann group with a 7Be target. The GSI and Weizmann
data are in good agreement with the Seattle data at high energies, but at low
energies we observe a slight systematic (up to 2sigma) deviation, yet the
Seattle group repeatedly rejects the CD method. We show that when plotting the
slopes, they mis plotted one CD data point and exclude measured slopes that
contradict their claim. Indeed the measured slope is essential to elucidate the
d-wave correction to S17(0) that could be as large as 15%, and is the last open
question that needs to be resolved before S17(0) can be quoted with an accuracy
of 5% or better. We show that this goal has not been achieved (in spite of the
strong claim of the Seattle group), since currently there is no agreement among
experiments as well as among theoretical models on the value of the slope. In
addition, currently there is no theoretical framework within which (for example
the Seattle) data can be analyzed and S17(0) extrapolated with the claimed high
precision of 2.5%. This (last) issue of the slope and the d-wave correction
must be resolved (by future measurements) so as to allow quoting S17(0) with an
accuracy of 5% or better.


title:
Measurement of the Extracted Deuteron Beam Vector Polarization at
  Nuclotron

abstract:
  The results of the measurements of the vector polarization of the extracted
deuteron beam at Nuclotron are presented. The intensity of the polarized
deuteron beam during the measurements was 2.5*10^7 particles/spill. The
measurements were made at the initial deuteron momenta of 5 and 3.5 GeV/c. The
averaged polarizations of the beam were 0.606 +/- 0.014 and 0.540+/- 0.019,
respectively.


title:
Model-independent tracking of criticality signals in nuclear
  multifragmentation data

abstract:
  We look for signals of criticality in multifragment production in heavy-ion
collisions using model-independent universal fluctuations theory. The
phenomenon is studied as a function of system size, bombarding energy, and
impact parameter in a wide range of INDRA data. For very central collisions
(b/b_max


title:
Multifragmentation with Indra@GSI: From the Fermi to the
  Participant-Spectator Domain

abstract:
  With INDRA at GSI, multifragmentation was studied in 197Au + 197Au reactions
at bombarding energies 40 to 150 MeV per nucleon. The mechanisms of fragment
production at mid-rapidity in peripheral collisions and the interplay of
collective motion and fragmentation in central collisions were investigated.
The balance energy for squeeze-out, i.e. the transition energy from in-plane to
out-of-plane enhancement of the particle and fragment emissions is determined
as a function of the impact parameter.


title:
Polarization Transfer Measurement for $^1H(\vec{d},\vec{p})^2 H$ Elastic
  Scattering at 135 MeV/u and Three Nucleon Force Effects

abstract:
  The deuteron to proton polarization transfer coefficients for the $d$--$p$
elastic scattering were precisely measured with an incoming deuteron energy of
135 MeV/u at the RIKEN Accelerator Research Facility. The data are compared to
theoretical predictions based on exact solutions of three-nucleon Faddeev
equations with high--precision nucleon--nucleon forces combined with different
three-nucleon forces (3NFs), representing the current, most popular models: the
$2\pi$-exchange Tucson-Melbourne model, a modification thereof closer to chiral
symmetry TM'(99), and the Urbana IX 3NF. Theory predicts large 3NF effects,
especially in the angular range around the cross section minimum, but the
present data only partially concurs, predominantly for
$K_{xx}^{y'}-K_{yy}^{y'}$ ($K_{xx}^{y'}$, $K_{yy}^{y'}$). For the induced
polarization, $P^{y'}$, the TM$'$(99) and Urbana IX 3NFs reproduce the data,
but the Tucson-Melbourne 3NF fails to describe the data. For the polarization
transfer coefficients, $K_{y}^{y'}$ and $K_{xz}^{y'}$, the predicted 3NF ffects
are in drastic conflict to the data. These facts clearly reveal the defects of
the 3NF models currently used.


title:
Identified Particle Dependence of Nuclear Modification Factors in d+Au
  Collisions at RHIC

abstract:
  We present transverse momentum spectra from d+Au collisions at sqrt(s_NN) =
200 GeV for identified hadrons at mid-rapidity and unidentified hadrons in the
forward rapidity region using the Solenoidal Tracker at RHIC. We scale these
spectra by the mean number of binary collisions to form a transverse momentum
dependent ratio to spectra from p+p collisions, showing that the Cronin effect
measured at lower centre-of-mass energies is also present at this higher
energy. The data also suggest a dependence of the Cronin effect on the hadron
species. We also compare central d+Au collisions to more peripheral ones,
contrasting the behaviour to that observed in Au+Au collisions and remark on
unidentified hadrons at forward rapidities which show a qualitatively different
behaviour.


title:
Estimation of the value and localization of possible systematic errors
  in determination of level density and radiative strength functions from the
  (n,2gamma) -reaction

abstract:
  Systematic error in determination of the absolute intensities of the two-step
gamma-cascades after the thermal neutron capture and its influence on the value
and localization of extracted from (n,2gamma)-reaction probable level densities
and radiative strength functions of dipole gamma-transitions have been
analysed. It was found that this error in limits of its possible magnitude
cannot change made earlier conclusions about the radiative strength functions
of E1- and M1- transitions at Egamma ~ 3 MeV and level density of heavy nucleus
below ~0.5Bn.


title:
Measurement of open charm production in $d$+Au collisions at
  $\sqrt{s_{NN}}$=200 GeV

abstract:
  We present the first comprehensive measurement of $D^{0}, D^{+}, D^{*+}$ and
their charge conjugate states at mid-rapidity in $d$+Au collisions at
$\sqrt{s_{_{NN}}}$=200 GeV using the STAR TPC. The directly measured open charm
multiplicity distribution covers a broad transverse momentum region of
0$<p_{T}<11$ GeV/$c$. The measured $dN/dy$ at mid-rapidity for $D^{0}$ is
$0.0265\pm 0.0036 (stat.) \pm 0.0071 (syst.)$ and the measured $D^{*+}/D^{0}$
and $D^{+}/D^{0}$ ratios are approximately equal with a magnitude of $0.40\pm
0.09(stat.) \pm 0.13(syst.)$. The total $c\bar{c}$ cross section per
nucleon-nucleon collision extracted from this study is $1.18 \pm 0.21(stat.)
\pm 0.39(syst.) $mb. The direct measurement of open charm production is
consistent with STAR single electron data. This cross section is higher than
expectations from PYTHIA and other pQCD calculations. The measured $p_{T}$
distribution is harder than the pQCD prediction using the Peterson
fragmentation function.


title: Results on hyperon production from the NA57 experiment

abstract:
  Recent results on hyperon production in Pb--Pb collisions from the NA57
experiment are reported. Strangeness enhancement and the transverse mass
spectra properties at 158 GeV per nucleon are described.


title: The in-medium isovector pi N amplitude from low energy pion scattering

abstract:
  Differential cross sections for elastic scattering of 21.5 MeV positive and
negative pions by Si, Ca, Ni and Zr have been measured as part of a study of
the pion-nucleus potential across threshold. The `anomalous' repulsion in the
s-wave term was observed, as is the case with pionic atoms. The extra repulsion
can be accounted for by a chiral-motivated model where the pion decay constant
is modified in the medium. Unlike in pionic atoms, the anomaly cannot be
removed by merely introducing an empirical on-shell energy dependence.


title: Strangeness Report

abstract:
  The paper provides a short report on strangeness production in
ultrarelativistic nucleus-nucleus collision, with the main stress on strange
particle abundances.


title:
Large enhancement of radiative strength for soft transisitons in the
  quasicontinuum

abstract:
  Radiative strength functions (RSFs) for the 56,57-Fe nuclei below the
separation energy are obtained from the 57-Fe(3-He,alpha gamma)56-Fe and
57-Fe(3-He,3-He' gamma)57-Fe reactions, respectively. An enhancement of more
than a factor of ten over common theoretical models of the soft (E_gamma ~< 2
MeV) RSF for transitions in the quasicontinuum (several MeV above the yrast
line) is observed. Two-step cascade intensities with soft primary transitions
from the 56-Fe(n,2gamma)57-Fe reaction confirm the enhancement.


title: Bulk properties and flow

abstract:
  In this report, I summarize the experimental results on {\bf bulk properties
and flow} presented at Quark Matter 2004. It is organized in four sections: 1)
Initial condition and stopping; 2) Particle spectra and freeze-outs; 3)
Anisotropic flow; 4) Outlook for future measurements.


title:
Measurement of the tensor analyzing power T20 in the dd->^3Hen and
  dd->^3Hp at intermediate energies and at zero degree

abstract:
  The data on the tensor analyzing power T20 in the dd->^3Hen and dd-> ^3Hp
reactions at 140, 200 and 270 MeV of the deuteron kinetic energy and at zero
degree obtained at RIKEN Accelerator Research Facility are presented. The
observed positive sign of T20 clearly demonstrates the sensitivity to the D/S
wave ratios in the ^3He and ^3H in the energy domain of the measurements. The
T20 data for the ^3He-n and ^3H-p channels are in agreement within experimental
accuracy.


title:
The IGEX experiment revisited: a response to the critique of
  Klapdor-Kleingrothaus,Dietz, and Krivosheina

abstract:
  This paper is a response to the article "Critical View to" the IGEX
neutrinoless double-beta decay experiment..."published in Phys. Rev.D, Volume
65 (2002) 092007," by H.V.Klapdor-Kleingrothaus, A. Dietz, and I.V.Krivosheina,
published as preprint hep-ph/0403056. The criticisms are confronted, and the
questions raised are answered. We demonstrate that the lower limit quoted by
IGEX, for the half life of Ge-76 neutrinoless double beta decay, 1.57x10**25 y,
is correct and that there was no "arithmetical error"-as claimed in the "
Critical Review" article.


title: Nuclear stopping from 0.09A GeV to 1.93A GeV and its correlation to flow

abstract:
  We present a complete systematics (excitation functions and system-size
dependences) of global stopping and sideflow for heavy ion reactions in the
energy range between 0.09A GeV and 1.93A GeV. For the heaviest system, Au+Au,
we observe a plateau of maximal stopping extending from about 0.2A to 0.8A GeV
with a fast drop on both sides. The degree of stopping, which is shown to
remain significantly below the expectations of a full stopping scenario, is
found to be highly correlated to the amount of sideflow.


title: Magnetic Moment of the Fragmentation Aligned 61Fe(9/2)+ Isomer

abstract:
  We report on the g factor measurement of the isomer in $^{61}Fe$ ($E^{*}=861
keV$). The isomer was produced and spin-aligned via a projectile-fragmentation
reaction at intermediate energy, the Time Dependent Perturbed Angular
Distribution (TDPAD) method being used for the measurement of the g factor. For
the first time, due to significant improvements of the experimental technique,
an appreciable residual alignment of the isomer has been observed, allowing a
precise determination of its g factor: $g=-0.229(2)$. Comparison of the
experimental g factor with shell-model and mean field calculations confirms the
$9/2^+$ spin and parity assignments and suggests the onset of deformation due
to the intrusion of Nilsson orbitals emerging from the $\nu g_{9/2}$.


title:
Nucleon-induced reactions at intermediate energies: New data at 96 MeV
  and theoretical status

abstract:
  Double-differential cross sections for light charged particle production (up
to A=4) were measured in 96 MeV neutron-induced reactions, at TSL laboratory
cyclotron in Uppsala (Sweden). Measurements for three targets, Fe, Pb, and U,
were performed using two independent devices, SCANDAL and MEDLEY. The data were
recorded with low energy thresholds and for a wide angular range (20-160
degrees). The normalization procedure used to extract the cross sections is
based on the np elastic scattering reaction that we measured and for which we
present experimental results. A good control of the systematic uncertainties
affecting the results is achieved. Calculations using the exciton model are
reported. Two different theoretical approches proposed to improve its
predictive power regarding the complex particle emission are tested. The
capabilities of each approach is illustrated by comparison with the 96 MeV data
that we measured, and with other experimental results available in the
literature.


title:
Estimation of the amount of the nuclear transformation products formed
  under explosion-induced compression of a substance to the superdense state

abstract:
  In the present work carried out at the Electrodynamics Laboratory Proton-21
with the use of X-ray electron probe microanalysis (XEPMA) and glow-discharge
mass spectrometry (GDMS) techniques, we study the chemical composition of a
substance formed as a result of the explosion-induced compression of solid
targets and deposited on the surfaces of accumulating screens. We established
that the explosion products contain chemical elements which were not included
in the composition of the initial materials of targets and accumulating screens
or were included in them as impurities in quantities by 3...7 and more orders
in magnitude less than those detected after the experiment. We conclude that
the regular appearance of chemical elements, which were not included in the
composition of the initial materials of targets and accumulating screens, in
the explosion products is the consequence of a nuclear transformation of a part
of their material, i.e., is the fact testifying to both the running of the
nucleosynthesis reactions upon the explosion-induced destruction of targets and
to the first realized possibility of controlled creation of the conditions for
their running in a laboratory setup.


title:
Study of the composition of products of controlled nucleosynthesis by
  local auger-electron spectroscopy

abstract:
  By local Auger-electron spectroscopy on solid targets and accumulating
screens, we studied the composition of nucleosynthesis products, in which we
expected to reveal the presence of long-lived transuranium elements (LTE). In a
number of cases for analyzed elements in complicated spectra the Auger-spectra
of corresponding pure elements or their simple compounds were registered with a
high signal-to-noise ratio. As artifacts of the analysis, we consider such
phenomena as the electric charging, characteristic losses of energy, and
chemical shift. We found the unidentifiable Auger-peaks with energies of 172,
527, 1096, 94, and 560 eV and the doublet of peaks with energies of 130 and 115
eV. We failed to refer them to any Auger-peaks of chemical elements in the
atlases and catalogs or to any artifacts. As one of the variants of
interpretation of the revealed peaks, we consider the assumption about their
affiliation to LTE.


title: Further evidence for narrow exotic low mass baryons

abstract:
  Although narrow low mass baryonic structures, observed mainly in SPES3
(Saturne) data, were not confirmed in recent experiments using lepton probes,
their existence is confirmed in other data, where hadronic probes were used.


title:
Identified particle measurements at RHIC: elucidating hadronization
  mechanisms for bulk partonic matter

abstract:
  Measurements of identified particle momentum spectra at center of mass energy
200 GeV are reviewed. Emphasis is placed on the azimuthal dependence and the
centrality dependence of hadron yields at intermediate transverse momentum (1.5
< p_T < 5 GeV/c). The first measurements of the fourth harmonic term (v_4) in
the azimuthal variation of identified particle yields are shown. The
recombination mechanism of hadron formation provides a consistent description
of the dependence of these measurements on particle-type.


title:
The decay time scale for highly excited nuclei as seen from asymmetrical
  emission of particles

abstract:
  A novel method was developed for the extraction of short emission times of
light particles from the projectile-like fragments in peripheral deep-inelastic
collisions in the Fermi energy domain. We have taken an advantage of the fact
that in the external Coulomb field particles are evaporated asymmetrically. It
was possible to determine the emission times in the interval 50-500 fm/c using
the backward emission anisotropy of alpha-particles relative to the largest
residue, in the reaction 28Si + 112Sn at 50 MeV/nucleon. The extracted times
are consistent with predictions based on the evaporation decay widths
calculated with the statistical evaporation model generalized for the case of
the Coulomb interaction with the target.


title:
Centrality dependence of charged hadron transverse momentum spectra in
  Au+Au collisions from sqrt(s_NN) = 62.4 to 200 GeV

abstract:
  We have measured transverse momentum distributions of charged hadrons
produced in Au+Au collisions at sqrt(s_NN) = 62.4 GeV. The spectra are
presented for transverse momenta 0.25 < p_T< 4.5 GeV/c, in a pseudo-rapidity
range of 0.2 < eta < 1.4. The nuclear modification factor R_AA is calculated
relative to p+p data at the same collision energy as a function of collision
centrality. For p_T > 2 GeV/c, R_AA is found to be significantly larger than in
Au+Au collisions at sqrt(s_NN) =130 and 200 GeV. In contrast, we find that the
evolution of the invariant yields per participant pair from peripheral to
central collisions is approximately energy independent over this range of
collision energies. This observation challenges models of high p_T hadron
suppression in terms of parton energy loss.


title: Anisotropic flow at RHIC

abstract:
  We present the first measurement of directed flow ($v_1$) at the Relativistic
Heavy Ion Collider (RHIC). $v_1$ is found to be consistent with zero at
pseudorapidities $\eta$ from -1.2 to 1.2, then rises to the level of a couple
of percent over the range $2.4 < |\eta| < 4$. The latter observation is similar
to that from NA49 if the SPS rapidities are shifted by the difference in beam
rapidity between RHIC and SPS. We studied the evolution of elliptic flow from
p+p collisions through d+Au collision, and onto Au+Au collisions. Measurements
of higher harmonics are presented and discussed.


title: Correlations and Fluctuations

abstract:
  New results on particle correlations and event-by-event fluctuations
presented at Quark Matter 2004 are reviewed.


title:
Precision Measurement of the Neutron Spin Asymmetries and Spin-dependent
  Structure Functions in the Valence Quark Region

abstract:
  We report on measurements of the neutron spin asymmetries $A_{1,2}^n$ and
polarized structure functions $g_{1,2}^n$ at three kinematics in the deep
inelastic region, with $x=0.33$, 0.47 and 0.60 and $Q^2=2.7$, 3.5 and 4.8
(GeV/c)$^2$, respectively. These measurements were performed using a 5.7 GeV
longitudinally-polarized electron beam and a polarized $^3$He target. The
results for $A_1^n$ and $g_1^n$ at $x=0.33$ are consistent with previous world
data and, at the two higher $x$ points, have improved the precision of the
world data by about an order of magnitude. The new $A_1^n$ data show a zero
crossing around $x=0.47$ and the value at $x=0.60$ is significantly positive.
These results agree with a next-to-leading order QCD analysis of previous world
data. The trend of data at high $x$ agrees with constituent quark model
predictions but disagrees with that from leading-order perturbative QCD (pQCD)
assuming hadron helicity conservation. Results for $A_2^n$ and $g_2^n$ have a
precision comparable to the best world data in this kinematic region. Combined
with previous world data, the moment $d_2^n$ was evaluated and the new result
has improved the precision of this quantity by about a factor of two. When
combined with the world proton data, polarized quark distribution functions
were extracted from the new $g_1^n/F_1^n$ values based on the quark parton
model. While results for $\Delta u/u$ agree well with predictions from various
models, results for $\Delta d/d$ disagree with the leading-order pQCD
prediction when hadron helicity conservation is imposed.


title: Relativistic Nucleus-Nucleus Collisions: from the BEVALAC to RHIC

abstract:
  I briefly describe the initial goals of relativistic nuclear collisions
research, focusing on the LBL Bevatron/Bevalac facility in the 1970's. An early
concept of high hadronic density fireball formation, and subsequent isentropic
decay (preserving information as to the high density stage) led to an outline
of physics observables that could determine the nuclear matter equation of
state at several times nuclear ground state matter density. With the advent of
QCD the goal of locating, and characterizing the hadron-parton deconfinement
phase transformation suggested the need for higher $\sqrt{s}$, the research
thus moving to the BNL AGS and CERN SPS, finally to RHIC at BNL. A set of
physics observables is discussed where present data span the entire $\sqrt{s}$
domain, from Bevalac and SIS at GSI, to top RHIC energy. Referring,
selectively, to data concerning bulk hadron production, the overall $\sqrt{s}$
evolution of directed and radial flow observables, and of pion pair
Bose-Einstein correlation are discussed. The hadronization process is studied
in the grand canonical statistical model. The resulting hadronization points in
the plane T vs. $\mu_B$ converge onto the parton-hadron phase boundary
predicted by finite $\mu_B$ lattice QCD, from top SPS to RHIC energy. At lower
SPS and top AGS energy a steep strangeness maximum occurs at which the
Wroblewski parameter $\lambda_s \approx $ 0.6; a possible connection to the QCD
critical point is discussed. Finally the unique new RHIC physics is addressed:
high $p_T$ hadron suppression and jet "tomography".


title: Heavy Flavours in Heavy-Ion Collisions at the LHC: ALICE Performance

abstract:
  We present the latest results on the ALICE performance for heavy-quark
production and quenching measurements, focusing in particular on charm
particles.


title: Anisotropic Flow in Ultra-Relativistic Heavy-Ion Collisions

abstract:
  The analysis of anisotropic flow of particles created in high energy
heavy-ion collisions gives insight into the early stage of these reactions.
Measurements of directed flow (v1), elliptic flow (v2) and flow of 4th and 6th
order (v4 and v6) are presented. While the study of v2 for multi-strange
particles establishes partonic collectivity the results for higher order
anisotropies constrain the initial conditions of hydrodynamic model
calculations.


title:
Energy dependence of hadronic observables in central Pb+Pb reactions at
  the CERN SPS

abstract:
  In the recent years the NA49 experiment has collected data on Pb+Pb
collisions at beam energies between 20 to 158 AGeV with the objective to cover
the critical region of energy densities where the expected phase transition to
a deconfined phase might occur in the early stage of the reactions. In this
contribution the energy dependence of various hadronic observables is
presented. These include m_t- and rapidity- distributions, particle ratio
fluctuations, as well as HBT radii.


title: Interplay of initial deformation and Coulomb proximity on nuclear decay

abstract:
  Alpha particles emitted from an excited projectile-like fragment (PLF*)
formed in a peripheral collision of two intermediate-energy heavy ions exhibit
a strong preference for emission towards the target-like fragment (TLF). The
interplay of the initial deformation of the PLF* caused by the reaction,
Coulomb proximity, and the rotation of the PLF* results in the observed
anisotropic angular distribution. Changes in the shape of the angular
distribution with excitation energy are interpreted as being the result of
forming more elongated initial geometries in the more peripheral collisions.


title: Relativistic Heavy Ion Physics in the New Millennium

abstract:
  The field of relativistic heavy ion physics has seen significant advancement
in the new millennium toward a greater understanding of QCD at high
temperatures with the commissioning and operation of the Relativistic Heavy Ion
Collider. Here we review progress in the field as presented in a set of
lectures at the Lake Louise Winter Institute on Fundamental Interactions in
February 2004.


title: Identified Hadron Spectra From pp, dA and AA collisions

abstract:
  The experimental data for identified hadron spectra from pp,d+A and AA
collisions are reviewed. Three regions with different dominant production
mechanisms are considered: soft region (pt <2 GeV/c) - with large degree of
collectivity and thermalization, hard particle production which exhibits
jet-quenching in Au+Au collisions at RHIC and intermediate region (2 < pt <5
GeV/c) with distinct baryon dynamics. Cronin effect, nuclear modification
factors and jet-like correlations are studied with the goal of understanding
the baryon dynamics at RHIC.


title:
Droplet formation in expanding nuclear matter: a system-size dependent
  study

abstract:
  Cluster production is investigated in central collisions of Ca+Ca, Ni+Ni,
96Zr+96Zr, 96Ru+96Ru, Xe+CsI and Au+Au reactions at 0.4A GeV incident energy.
We find that the multiplicity of clusters with charge Z > 2 grows quadratically
with the system's total charge and is associated with a mid-rapidity source
with increasing transverse velocity fluctuations.


title: Heavy-Ion Physics at the LHC with the Compact Muon Solenoid Detector

abstract:
  Hadron collisions at the LHC offer a unique opportunity to study strong
interactions. The exciting data collected by the four RHIC experiments suggest
that in heavy-ion collisions at sqrt(s_NN) = 200 GeV, an equilibrated,
strongly-coupled partonic system is formed. An extrapolation of the existing
data toward LHC energies suggests that the heavy-ion program at the LHC is in a
situation comparable to that of the high-energy program, where new discoveries
near the TeV-scale are expected. Similarly, heavy-ion studies at the LHC are
bound to either confirm the theoretical picture emerging from RHIC or challenge
and extend our present understanding of strongly interacting matter at extreme
densities. The experience at RHIC shows that the ideal detector for future
heavy-ion studies should provide large acceptance for tracking and calorimetry,
high granularity, high resolution and use fast detector technologies as well as
sophisticated triggering. The CMS detector at the LHC excels in each of these
categories.


title:
Azimuthal anisotropy in high-energy heavy-ion collisions at RHIC
  energies

abstract:
  Directed and elliptic event anisotropy parameters measured in the experiments
at relativistic heavy-ion collider are presented. The possible origin of the
measured elliptic anisotropy parameter $v_2$ and its sensitivity to the early
phase of the high-energy heavy-ion collisions are discussed.


title:
Study of Multiparticle Production Processes in Relativistic
  Nucleus-Nucleus Collisions by Using Streamer Spectrometer

abstract:
  Multiparticle production processes in He-Li, He-C, C-C, C-Ne, C-Cu, C-Pb,,
F-Mg, Mg-Mg and O-Pb collsions at energy of 3.7 GeV/nucleon obtained by use of
SKM-200 and GIBS spectrometers of JINR. Collective flow phenomena (directed and
elliptic flows) at this energy have been observed.


title: BRAHMS results in the context of saturation and quantum evolution

abstract:
  We report BRAHMS results from RHIC d+Au and p+p collisions at
Sqrt(s_NN)=200GeV. A remarkable change in the nuclear modification factor RdAu
is seen as the pseudorapidity of the detected charged hadrons changes from zero
at mid-rapidity to 3.2 at the most forward angle studied during the 2003 run.
For pseudorapidity eta>1 the suppression of the Rcp factor is more pronounced
in the sample of central events in contrast to the behavior at mid-rapidity
where the central events show higher enhancement compared to the semi-central
sample. These results are consistent with a saturated Au wave function strongly
affected by quantum evolution at higher values of rapidity.


title:
Complete Angular Distribution Measurements of Two-Body Deuteron
  Photodisintegration between 0.5 and 3 GeV

abstract:
  Nearly complete angular distributions of the two-body deuteron
photodisintegration differential cross section have been measured using the
CLAS detector and the tagged photon beam at JLab. The data cover photon
energies between 0.5 and 3.0 GeV and center-of-mass proton scattering angles
10-160 degrees. The data show a persistent forward-backward angle asymmetry
over the explored energy range, and are well-described by the non-perturbative
Quark Gluon String Model.


title:
Super- and Hyperdeformed Isomeric States and Long-Lived Superheavy
  Elements

abstract:
  The recent discoveries of the long-lived high spin super- and hyperdeformed
isomeric states and their unusual radioactive decay properties are described.
Based on their existence a consistent interpretation is given to the production
of the long-lived superheavy element with Z = 112, via secondary reactions in
CERN W targets, and to the low energy and very enhanced alpha-particle groups
seen in various actinide fractions separated from the same W target. In
addition, consistent interpretations are suggested for previously unexplained
phenomena seen in nature. These are the Po halos, the low-energy enhanced 4.5
MeV alpha-particle group proposed to be due to an isotope of a superheavy
element with Z = 108, and the giant halos.


title:
Survey of A_LT' asymmetries in semi-exclusive electron scattering on He4
  and C12

abstract:
  Single spin azimuthal asymmetries A_LT' were measured at Jefferson Lab using
2.2 and 4.4 GeV longitudinally polarized electrons incident on He4 and C12
targets in the CLAS detector. A_LT' is related to the imaginary part of the
longitudinal-transverse interference and in quasifree nucleon knockout it
provides an unambiguous signature for final state interactions (FSI).
Experimental values of A_LT' were found to be below 5%, typically |A_LT'| < 3%
for data with good statistical precision. Optical Model in Eikonal
Approximation (OMEA) and Relativistic Multiple-Scattering Glauber Approximation
(RMSGA) calculations are shown to be consistent with the measured asymmetries.


title: Landau Hydrodynamics and RHIC Phenomena

abstract:
  The basic physical assumptions and results of Landau's hydrodynamic model of
particle production are reviewed. It is argued that these results have a
substantial descriptive and predictive power in strong-interaction
phenomenology, including recent RHIC data.


title: The Landscape of Particle Production: Results from PHOBOS

abstract:
  Recent results from the PHOBOS experiment at RHIC are presented, both from
Au+Au collisions from the 2001 run and p+p and d+Au collisions from 2003. The
centrality dependence of the total charged particle multiplicity in p+p and
d+Au show features, such as Npart-scaling and limiting fragmentation, similar
to p+A collisions at lower energies. Multiparticle physics in Au+Au is found to
be local in (pseudo)rapidity, both when observed by HBT correlations and by
forward-backward pseudorapidity correlations. The shape of elliptic flow in
Au+Au, measured over the full range of pseudorapidity, appears to have a very
weak centrality dependence. Identified particle ratios in d+Au reactions show
little difference between the shape of proton and anti-proton spectra, while
the absolute yields show an approximate m_T scaling.


title: Flow in ultra-relativistic heavy ion collisions

abstract:
  Flow develops in ultra-relativistic heavy-ion collisions via re-interactions
among partons or/and hadrons. Characterizing flow is a crucial step towards
understanding the formation of partonic matter. We review new measurements on
anisotropic flow, including v2 at large rapidity, v1, v4, and new ways of
addressing non-flow issues. We then show the self-consistency of the data and
characterize flow of pions, kaons, protons and Xi within the Blast Wave
parameterization. Finally, we show that the data currently available suggests
that flow develops at both partonic and hadronic stages.


title: Nuclear Transparency in 90 Degree c.m. Quasielastic A(p,2p) Reactions

abstract:
  We summarize the results of two experimental programs at the Alternating
Gradient Synchrotron of BNL to measure the nuclear transparency of nuclei
measured in the A(p,2p) quasielastic scattering process near 90 Deg .in the pp
center of mass. The incident momenta varied from 5.9 to 14.4 GeV/c,
corresponding to 4.8 < Q^2 < 12.7 (GeV/c)^2. First, we describe the
measurements with the newer experiment, E850, which had more complete kinematic
definition of quasielastic events. In E850 the angular dependence of the
nuclear transparency near 90 Deg. c.m., and the nuclear transparency for
deuterons was studied. Second, we review the techniques used in an earlier
experiment, E834, and show that the two experiments are consistent for the
Carbon data. E834 also determines the nuclear transparencies for Li, Al, Cu,
and Pb nuclei as well as for C. We find for both E850 and E834 that the A(p,2p)
nuclear transparency, unlike that for A(e,e'p) nuclear transparency, is
incompatible with a constant value versus energy as predicted by Glauber
calculations. The A(p,2p) nuclear transparency for C and Al increases by a
factor of two between 5.9 and 9.5 GeV/c incident proton momentum. At its peak
the A(p,2p) nuclear transparency is about 80% of the constant A(e,e'p) nuclear
transparency. Then the nuclear transparency falls back to the Glauber level
again. This oscillating behavior is generally interpreted as an interplay
between two components of the pN scattering amplitude; one short ranged and
perturbative, and the other long ranged and strongly absorbed in the nuclear
medium. We suggest a number of experiments for further studies of nuclear
transparency effects.


title:
Measurement of Inverse Pion Photoproduction at Energies Spanning the
  N(1440) Resonance

abstract:
  Differential cross sections for the process pi^- p -> gamma n have been
measured at Brookhaven National Laboratory's Alternating Gradient Synchrotron
with the Crystal Ball multiphoton spectrometer. Measurements were made at 18
pion momenta from 238 to 748 MeV/c, corresponding to E_gamma for the inverse
reaction from 285 to 769 MeV. The data have been used to evaluate the gamma n
multipoles in the vicinity of the N(1440) resonance. We compare our data and
multipoles to previous determinations. A new three-parameter SAID fit yields 36
+/- 7 (GeV)^-1/2 X 10^-3 for the A^n_1/2 amplitude of the P_11.


title:
Collision geometry scaling of Au+Au pseudorapidity density from
  sqrt(s_NN) = 19.6 to 200 GeV

abstract:
  The centrality dependence of the midrapidity charged particle multiplicity in
Au+Au collisions at sqrt(s_NN) = 19.6 and 200 GeV is presented. Within a simple
model, the fraction of hard (scaling with number of binary collisions) to soft
(scaling with number of participant pairs) interactions is consistent with a
value of x = 0.13 +/- 0.01(stat) +/- 0.05(syst) at both energies. The
experimental results at both energies, scaled by inelastic p(pbar)+p collision
data, agree within systematic errors. The ratio of the data was found not to
depend on centrality over the studied range and yields a simple linear scale
factor of R_(200/19.6) = 2.03 +/- 0.02(stat) +/- 0.05(syst).


title: Correlated Strength in Nuclear Spectral Function

abstract:
  We have carried out an (e,e'p) experiment at high momentum transfer and in
parallel kinematics to measure the strength of the nuclear spectral function
S(k,E) at high nucleon momenta k and large removal energies E. This strength is
related to the presence of short-range and tensor correlations, and was known
hitherto only indirectly and with considerable uncertainty from the lack of
strength in the independent-particle region. This experiment confirms by direct
measurement the correlated strength predicted by theory.


title: Collective Flow with PHOBOS

abstract:
  This paper reviews recent results on directed and elliptic flow from the
PHOBOS experiment using data taken during Au+Au runs at RHIC. The systematic
dependence of flow on pseudorapidity, energy, transverse momentum and
centrality is discussed.


title: NEMO 3 experiment: preliminary results from 2003 data

abstract:
  The NEMO-3 detector installed in the Modane Underground Laboratory (LSM,
France) is running to search for neutrinoless double beta decay
($\beta\beta0\nu$) with an expected sensitivity for the effective Majorana
neutrino mass down to 0.1 eV. New preliminary limits (90% CL),
$T_{1/2}(\beta\beta0\nu) > 1.0 \cdot 10^{23}$ y (massive mechanism) and
$T_{1/2}(\beta\beta0\nu) > 1.9 \cdot 10^{23}$ y (right-handed currents) were
established analyzing $^{100}$Mo data collected during 3800h of measurements in
2003. This is the world's best result for $^{100}$Mo. New preliminary
half-lives of $\beta\beta2\nu$-mode for $^{100}$Mo, $^{82}$Se, $^{116}$Cd,
$^{150}$Nd are also reported as well as the results of background studies. The
future progress and plans of the NEMO-3 project are discussed.


title:
Study of the Sigma-nucleus potential by the (pi^-,K^+) reaction on
  medium-to-heavy nuclear targets

abstract:
  In order to study the Sigma-nucleus optical potential, we measured inclusive
(pi^-,K^+) spectra on medium-to-heavy nuclear targets: CH_2, Si, Ni, In and Bi.
The CH_2 target was used to calibrate the excitation energy scale by using the
elementary process p + pi^- -> K^+ + Sigma^-, where the C spectrum was also
extracted. The calibration was done with +-0.1 MeV precision. The angular
distribution of the elementary cross section was measured, and agreed well with
the previous bubble chamber data, but with better statistics, and the
magnitudes of the cross sections of the measured inclusive (pi^-,K^+) spectra
were also well calibrated. All of the inclusive spectra were found to be
similar in shape at a region near to the Sigma^- binding energy threshold,
showing a weak mass-number dependence on the magnitude of the cross section.
The measured spectra were compared with a theoretical calculation performed
within the framework of the Distorted Wave Impulse Approximation (DWIA). It has
been demonstrated that a strongly repulsive \sig-nucleus potential with a
non-zero size of the imaginary part is required to reproduce the shape of the
measured spectra.


title:
Energetics of midvelocity emissions in peripheral heavy ion collisions
  at Fermi energies

abstract:
  Peripheral and semi-peripheral collisions have been studied in the system
93Nb+93Nb at 38 AMeV. The evaporative and midvelocity components of the light
charged particle and intermediate mass fragment emissions have been carefully
disentangled. In this way it was possible to obtain the average amount not only
of charge and mass, but also of energy, pertaining to the midvelocity emission,
as a function of an impact parameter estimator. This emission has a very
important role in the overall balance of the reaction, as it accounts for a
large fraction of the emitted mass and for more than half of the dissipated
energy. As such, it may give precious clues on the microscopic mechanism of
energy transport from the interaction zone toward the target and projectile
remnants.


title:
New Constraints on the 18F(p,alpha) 15O Rate in Novae from the (d,p)
  Reaction

abstract:
  The degree to which the (p,gamma) and (p,alpha) reactions destroy 18F at
temperatures 1-4x10^8 K is important for understanding the synthesis of nuclei
in nova explosions and for using the long-lived radionuclide 18F, a target of
gamma-ray astronomy, as a diagnostic of nova mechanisms. The reactions are
dominated by low-lying proton resonances near the 18F+p threshold (E_x=6.411
MeV in 19Ne). To gain further information about these resonances, we have used
a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to
selectively populate corresponding mirror states in 19F via the inverse
d(18F,p)19F neutron transfer reaction. Neutron spectroscopic factors were
measured for states in 19F in the excitation energy range 0-9 MeV. Widths for
corresponding proton resonances in 19Ne were calculated using a Woods-Saxon
potential. The results imply significantly lower 18F(p,gamma)19Ne and
18F(p,alpha)15O reaction rates than reported previously, thereby increasing the
prospect of observing the 511-keV annihilation radiation associated with the
decay of 18F in the ashes ejected from novae.


title: Charm Production at RHIC

abstract:
  The latest results for open charm and $J/\psi$ production in p-p, d-Au and
Au-Au from the PHENIX and STAR experiments at $\sqrt{s_{NN}}=200$ GeV at RHIC
are presented. The preliminary data show open charm production follows binary
scaling in d-Au and Au-Au collisions at RHIC. In d-Au collisions, a suppression
in $J/\psi$ production has been observed at the forward rapidity (d direction),
at the backward rapidity (Au direction), $J/\psi$ production seems strongly
dependent on collisions centrality. The implications of heavy flavor production
in cold (d-Au) and hot (Au-Au) nuclear media at RHIC are discussed.


title:
Photon-induced Reactions in Stars and in the Laboratory: A Critical
  Comparison

abstract:
  Photon-induced reactions during the astrophysical p- (or gamma-) process
occur at typical temperatures of 1.8 < T9 < 3.3. Experimental data of
(gamma,n), (gamma,p), or (gamma,alpha) reactions - if available in the relevant
energy region - cannot be used directly to measure astrophysical (gamma,n),
(gamma,p), or (gamma,alpha) reaction rates because of the thermal excitation of
target nuclei at these high temperatures. Usually, statistical model
calculations are used to predict photon-induced reaction rates. The relations
between experimental reaction cross sections, theoretical predictions, and
astrophysical reaction rates will be critically discussed.


title:
Study of Cronin effect and nuclear modification of strange particles in
  d-Au and Au-Au collisions at 200 GeV in PHENIX

abstract:
  Effects of strangeness on nuclear modification in d-Au and Au-Au collisions
at 200 GeV are studied, in order to quantify the effects of quark content and
mass. Measurements of ratios of the yields in central collisions to the yields
in peripheral collisions are performed for lambda baryon and phi meson. Found
results show little dependence of particle suppression or enhancement on mass
and strange content, but rather prominent difference in nuclear modification
between mesons and baryons.


title: Photoproduction of pi0-mesons from nuclei

abstract:
  Photoproduction of neutral pions from nuclei (carbon, calcium, niobium, lead)
has been studied for incident photon energies from 200 MeV to 800 MeV with the
TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI
accelerator. Data were obtained for the inclusive photoproduction of neutral
pions and the partial channels of quasifree single pi0, double pi0, and
pi0pi+/- photoproduction. They have been analyzed in terms of the in-medium
behavior of nucleon resonances and the pion - nucleus interaction. They are
compared to earlier measurements from the deuteron and to the predictions of a
Boltzmann-Uehling-Uhlenbeck (BUU) transport model for photon induced pion
production from nuclei.