abstract:
  We report the STAR measurement of Phi meson production in Au+Au and p+p
collisions at sqrt (s)=200 GeV. Using the event mixing technique, the Phi
spectra and yields are obtained at mid-rapidity for five centrality bins in
Au+Au collisions and for non-singly-diffractive p+p collisions. It is found
that the Phi transverse momentum distributions from Au+Au collisions are better
fitted with a single-exponential while the p+p spectrum is better described by
a double-exponential distribution. The measured nuclear modification factors
indicate that Phi production in central Au+Au collisions is suppressed relative
to peripheral collisions when scaled by the number of binary collisions. The
systematics of <pt> versus centrality and the constant Phi/K- ratio versus beam
species, centrality, and collision energy rule out kaon coalescence as the
dominant mechanism for Phi production.


title:
Deuteron and antideuteron production in Au+Au collisions at
  sqrt(s_NN)=200 GeV

abstract:
  The production of deuterons and antideuterons in the transverse momentum
range 1.1 < p_T < 4.3 GeV/c at mid-rapidity in Au + Au collisions at
sqrt(s_NN)=200 GeV has been studied by the PHENIX experiment at RHIC. A
coalescence analysis comparing the deuteron and antideuteron spectra with those
of protons and antiprotons, has been performed. The coalescence probability is
equal for both deuterons and antideuterons and increases as a function of p_T,
which is consistent with an expanding collision zone. Comparing (anti)proton
yields p_bar/p = 0.73 +/- 0.01, with (anti)deuteron yields: d_bar/d = 0.47 +/-
0.03, we estimate that n_bar/n = 0.64 +/- 0.04.


title:
Measurement of the Generalized Forward Spin Polarizabilities of the
  Neutron

abstract:
  The generalized forward spin polarizabilities $\gamma_0$ and $\delta_{LT}$ of
the neutron have been extracted for the first time in a $Q^2$ range from 0.1 to
0.9 GeV$^2$. Since $\gamma_0$ is sensitive to nucleon resonances and
$\delta_{LT}$ is insensitive to the $\Delta$ resonance, it is expected that the
pair of forward spin polarizabilities should provide benchmark tests of the
current understanding of the chiral dynamics of QCD. The new results on
$\delta_{LT}$ show significant disagreement with Chiral Perturbation Theory
calculations, while the data for $\gamma_0$ at low $Q^2$ are in good agreement
with a next-to-lead order Relativistic Baryon Chiral Perturbation theory
calculation. The data show good agreement with the phenomenological MAID model.


title:
High-resolution velocity measurements on fully identified light nuclides
  produced in 56Fe + hydrogen and 56Fe + titanium systems

abstract:
  New experimental results on the kinematics and the residue production are
obtained for the interactions of 56Fe projectiles with protons and (nat)Ti
target nuclei, respectively, at theincident energy of 1 A GeV. The
titanium-induced reaction serves as a reference case for multifragmentation.
Already in the proton-induced reaction, the characteristics of the isotopic
cross sections and the shapes of the velocity spectra of light residues
indicate that high thermal energy is deposited in the system during the
collision. In the 56Fe+p system the high excitation seems to favour the onset
of fast break-up decays dominated by very asymmetric partitions of the
disassembling system. This configuration leads to the simultaneous formation of
one or more light fragments together with one heavy residue.


title: New results from CERES

abstract:
  During the year 2000 the CERES experiment, upgraded with a radial drift TPC,
took a large data sample of Pb on Au collisions at 158 AGeV triggered on the 8%
most central collisions. A very detailed calibration of the radial drift TPC
was since completed. Preliminary results on $e^+e^-$ pairs and $\phi$ mesons
reconstructed in the $K^+K^-$ channel are presented.


title: Symmetry energy and the isospin dependent equation of state

abstract:
  The isoscaling parameter $\alpha$, from the fragments produced in the
multifragmentation of $^{58}$Ni + $^{58}$Ni, $^{58}$Fe + $^{58}$Ni and
$^{58}$Fe + $^{58}$Fe reactions at 30, 40 and 47 MeV/nucleon, was compared with
that predicted by the antisymmetrized molecular dynamic (AMD) calculation based
on two different nucleon-nucleon effective forces, namely the Gogny and
Gogny-AS interaction. The results show that the data agrees better with the
choice of Gogny-AS effective interaction, resulting in a symmetry energy of
$\sim$ 18-20 MeV. The observed value indicate that the fragments are formed at
a reduced density of $\sim$ 0.08 fm$^{-3}$.


title: The stellar (n,gamma) cross section of 62Ni

abstract:
  The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in
the control of the flow path of the slow neutron-capture (s-) nucleosynthesis
process. We have measured for the first time the total cross section of this
reaction for a quasi-Maxwellian (kT = 25 keV) neutron flux. The measurement was
performed by fast-neutron activation, combined with accelerator mass
spectrometry to detect directly the 63Ni product nuclei. The experimental value
of 28.4+-2.8 mb, fairly consistent with a recent theoretical estimate, affects
the calculated net yield of 62Ni itself and the whole distribution of nuclei
with 62<A <90 produced by the weak s-process in massive stars.


title:
Extended sudden approximation model for high-energy nucleon removal
  reactions

abstract:
  A model based on the sudden approximation has been developed to describe high
energy single nucleon removal reactions. Within this approach, which takes as
its starting point the formalism of Hansen \cite{Anne2}, the nucleon-removal
cross section and the full 3-dimensional momentum distributions of the core
fragments including absorption, diffraction, Coulomb and nuclear-Coulomb
interference amplitudes, have been calculated. The Coulomb breakup has been
treated to all orders for the dipole interaction. The model has been compared
to experimental data for a range of light, neutron-rich psd-shell nuclei. Good
agreement was found for both the inclusive cross sections and momentum
distributions. In the case of $^{17}$C, comparison is also made with the
results of calculations using the transfer-to-the-continuum model. The
calculated 3-dimensional momentum distributions exhibit longitudinal and
transverse momentum components that are strongly coupled by the reaction for
s-wave states, whilst no such effect is apparent for d-waves. Incomplete
detection of transverse momenta arising fromlimited experimental acceptances
thus leads to a narrowing of the longitudinal distributions for nuclei with
significant s-wave valence neutron configurations, as confirmed by the data.
Asymmetries in the longitudinal momentum distributions attributed to
diffractive dissociation are also explored.


title: Hyperon production at CERN SPS energies

abstract:
  New experimental results of NA49 on hyperon production in central Pb+Pb
collisions at the SPS energies are presented. In particular, measurements of
$\Lambda$ production at 30 A$\cdot$GeV and $\Xi$ and $\Omega$ production at 40
A$\cdot$GeV are shown. Transverse mass spectra and rapidity distributions of
hyperons at different energies are compared. The energy dependence of the
particle yields and ratios is discussed.


title: Quantum Chromo (many-body) Dynamics probed in the hard sector at RHIC

abstract:
  The most significant experimental results on hard processes in heavy-ion
collisions at RHIC collider energies are reviewed. Emphasis is put on
measurements that provide insights on strongly interacting media like the
``Quark Gluon Plasma'' and the ``Color Glass Condensate''.


title:
Electric charge fluctuations in central Pb+Pb collisions at 20, 30, 40,
  80 and 158 AGeV

abstract:
  Results are presented on event-by-event electric charge fluctuations in
central Pb+Pb collisions at 20, 30, 40, 80 and 158 AGeV. The observed
fluctuations are close to those expected for a gas of pions correlated by
global charge conservation only. These fluctuations are considerably larger
than those calculated for an ideal gas of deconfined quarks and gluons. The
present measurements do not necessarily exclude reduced fluctuations from a
quark-gluon plasma because these might be masked by contributions from
resonance decays.


title: Coulomb distortion in high-Q^2 elastic e-p scattering

abstract:
  Recently, there has been a significant amount of activity to try and
understand the discrepancy between Rosenbluth and polarization transfer
measurements of the proton form factors. It has been suggested that the
standard use of plane-wave Born approximation in extracting the form factors is
insufficient, and that higher-order terms must also be included. Of the
corrections missing in standard prescriptions, Coulomb distortion is the most
well understood. In this paper, we examine the effect of Coulomb distortion on
the extraction of the proton form factors.


title:
Required precision of mass and half-life measurements for r-process
  nuclei planned at future RI-beam facilities

abstract:
  In order to understand the r-process nucleosynthesis, we suggest precision
required for mass and beta-decay half-life measurements planned at future
RI-beam facilities. To satisfy a simple requirement that we put on nuclear
model predictions, it is concluded that the detectors for the mass measurements
must have a precision of 1sigma ~< 250 keV, and that the detectors for the
half-life measurements demand a precision of 1sigma ~< 0.15 ms. Both the above
precisions are required at the neutron richness of A/Z = 3.0 at the N=82 shell
closure and A/Z = 2.9 at the N=50 shell closure. For the doubly magic nuclide
78Ni, a precision of 1sigma ~< 300 keV and 1sigma ~< 5 ms are required,
respectively, for mass and half-life measurements. This analysis aims to
provide a first rough guide for ongoing detector developments.


title: Hyperon production in Pb+Pb collisions at the CERN-SPS

abstract:
  New results on the production of Xi and Omega hyperons in Pb+Pb interactions
at 40AGeV and Lambda at 30AGeV are presented. Transverse mass spectra as well
as rapidity spectra of these hyperons are shown and compared to previously
measured data at different beam energies. The energy dependence of hyperon
production (4pi yields) is discussed. Additionally, the centrality dependence
of Xi^{-} production at 40AGeV is presented.


title:
Pseudorapidity dependence of charged hadron transverse momentum spectra
  in d+Au collisions at sqrt sNN = 200 GeV

abstract:
  We have measured the transverse momentum distributions of charged hadrons in
d+Au collisions at sqrt sNN = 200 GeV in the range of 0.5 < p_T < 4.0 GeV/c.
The total range of pseudorapidity, eta, is 0.2 < eta < 1.4, where positive eta
is in the deuteron direction. The data has been divided into three regions of
pseudorapidity, covering 0.2 < eta < 0.6, 0.6 < \eta < 1.0, and 1.0 < eta < 1.4
and has been compared to charged hadron spectra from p+pbar collisions at the
same energy. There is a significant change in the spectral shape as a function
of pseudorapidity. As eta increases we see a decrease in the nuclear
modification factor RdAu.


title: A Facility for Low-energy Antiproton and Ion Research

abstract:
  The future accelerator facility for beams of ions and antiprotons at
Darmstadt will provide antiproton beams of intensities that are two orders of
magnitude higher than currently available. Within the foreseen scheme,
antiprotons can be decelerated to 30 MeV. The low-energy antiproton community
has recently formed a users group to make use of this opportunity to create a
next-generation low-energy antiproton facility called FLAIR, which will be able
to provide cooled antiproton beams well below 100 keV kinetic energy. This talk
gives an overview of the layout and physics program of the proposed facility.


title: The $^8$B Neutrino Spectrum

abstract:
  Knowledge of the energy spectrum of $^8$B neutrinos is an important
ingredient for interpreting experiments that detect energetic neutrinos from
the Sun. The neutrino spectrum deviates from the allowed approximation because
of the broad alpha-unstable $^8$Be final state and recoil order corrections to
the beta decay. We have measured the total energy of the alpha particles
emitted following the beta decay of $^8$B. The measured spectrum is
inconsistent with some previous measurements, in particular with a recent
experiment of comparable precision. The beta decay strength function for the
transition from $^8$B to the accessible excitation energies in $^8$Be is fit to
the alpha energy spectrum using the R-matrix approach. Both the positron and
neutrino energy spectra, corrected for recoil order effects, are constructed
from the strength function. The positron spectrum is in good agreement with a
previous direct measurement. The neutrino spectrum disagrees with previous
experiments, particularly for neutrino energies above 12 MeV.


title:
Neutron and proton energy spectra from the non-mesonic weak decays of
  5_Lambda-He and 12_Lambda-C

abstract:
  We have simultaneously measured the energy spectra of neutrons and protons
emitted in the non-mesonic weak decays of 5_Lambda-He and 12_Lambda-C
hypernuclei produced via the (pi^+,k^+) reaction with much higher statistics
over those of previous experiments. The neutron-to-proton yield ratios for both
hypernuclei at a high energy threshold (60 MeV) were approximately equal to
two, which suggests that the ratio of the neutron- and proton-induced decay
channels, Gn(Lambda n -> nn)/Gp(Lambda p -> np), is about 0.5. In the neutron
energy spectra, we found that the yield of the low-energy component is
unexpectedly large, even for 5_Lambda-He.


title:
Energy dependence of elliptic flow over a large pseudorapidity range in
  Au+Au collisions at RHIC

abstract:
  This paper describes the measurement of the energy dependence of elliptic
flow for charged particles in Au+Au collisions using the PHOBOS detector at the
Relativistic Heavy Ion Collider (RHIC). Data taken at collision energies of
$\sqrt{s_{_{NN}}} =$ 19.6, 62.4, 130 and 200 GeV are shown over a wide range in
pseudorapidity. These results, when plotted as a function of
$\eta'=|\eta|-y_{beam}$, scale with approximate linearity throughout $\eta'$,
implying no sharp changes in the dynamics of particle production as a function
of pseudorapidity or increasing beam energy.


title:
Azimuthal Anisotropy of Photon and Charged Particle Emission in Pb+Pb
  Collisions at 158 A GeV/c

abstract:
  The azimuthal distributions of photons and charged particles with respect to
the event plane are investigated as a function of centrality in Pb + Pb
collisions at 158 A GeV/c in the WA98 experiment at the CERN SPS. The
anisotropy of the azimuthal distributions is characterized using a Fourier
analysis. For both the photon and charged particle distributions the first two
Fourier coefficients are observed to decrease with increasing centrality. The
observed anisotropies of the photon distributions compare well with the
expectations from the charged particle measurements for all centralities.


title: Lepton and Photon Physics at RHIC

abstract:
  Results on physics at RHIC using outgoing leptons and photons will be
presented from Au+Au collisions at nucleon-nucleon c.m. energies
$\sqrt{s_{NN}}=130$ and 200 GeV and from p-p collisions at $\sqrt{s}=200$ GeV.
Introduction and motivation will be presented both from the theoretical and
experimental perspectives. Topics include open charm production via single
$e^{\pm}$, $J/\Psi\to e^+ + e^-$, $\mu^+ + \mu^-$ and inclusive photon
production.


title: Can the QGP be found using only an Electromagnetic Calorimeter?

abstract:
  Measurements using the finely segmented EM Calorimeter in PHENIX are
presented. The issue of whether these are sufficient to claim discovery of the
Quark Gluon Plasma is discussed.


title: alpha-decay of excited states in 11C and 11B

abstract:
  Studies of the 16O(9Be,alpha7Be)14C and 7Li(9Be,alpha7Li)5He reactions at
E{beam}=70 MeV have been performed using resonant particle spectroscopy
techniques. The 11C excited states decaying into alpha+7Be(gs) are observed at
8.65, 9.85, 10.7 and 12.1 MeV as well as possible states at 12.6 and 13.4 MeV.
This result is the first observation of alpha-decay for excited states above 9
MeV. The alpha+7Li(gs) decay of 11B excited states at 9.2, 10.3, 10.55, 11.2,
(11.4), 11.8, 12.5,(13.0), 13.1, (14.0), 14.35, (17.4) and (18.6) MeV is
observed. The decay processes are used to indicate the possible three-centre
2alpha+3He(3H) cluster structure of observed states. Two rotational bands
corresponding to very deformed structures are suggested for the positive-parity
states. Excitations of some observed T=1/2 resonances coincide with the
energies of T=3/2 states which are the isobaric analogs of the lowest 11Be
states. Some of these states may have mixed isospin.


title: Bulk Observables in pp, dA and AA Collisions at RHIC

abstract:
  Results on charged particle production in p+p, d+Au and Au+Au collisions at
RHIC energies (sqrt(s_NN) = 19.6 to 200 GeV) are presented. The data exhibit
remarkable, and simple, scaling behaviors, the most prominent of which are
discussed.


title:
Rapidity and k_T dependence of HBT correlations in Au+Au collisions at
  200 GeV with PHOBOS

abstract:
  Two-particle correlations of identical charged pion pairs from Au+Au
collisions at sqrt(s_NN) = 200 GeV were measured by the PHOBOS experiment at
RHIC. Data for the most central (0--15%) events were analyzed with
Bertsch-Pratt (BP) and Yano-Koonin-Podgoretskii (YKP) parameterizations using
pairs with rapidities of 0.4 < y < 1.3 and transverse momenta 0.1 < k_T < 1.4
GeV/c. The Bertsch-Pratt radii decrease as a function of pair transverse
momentum. The pair rapidity Y_pipi roughly scales with the source rapidity
Y_YKP, indicating strong dynamical correlations.


title: Isovector and isoscalar spin-flip M1 strengths in $^{11}$B

abstract:
  The $^{11}$B($^3$He$, t$), $^{11}$B($d, d'$), and $^{11}$B($p, p'$) reactions
were measured at forward scattering angles including $0^\circ$ to study the
isovector and isoscalar spin-flip M1 strengths in $^{11}$B. The measured
$^{11}$B($^3$He$, t$) cross sections were compared with the results of the
distorted-wave impulse-approximation (DWIA) calculation, and the Gamow-Teller
(GT) strengths for low-lying states in $^{11}$C were determined. The GT
strengths were converted to the isovector spin-flip M1 strengths using the
isobaric analog relations under the assumption of the isospin symmetry. The
isoscalar spin-flip M1 strengths were obtained from the ($d, d'$) analysis by
assuming that the shape of the collective transition form factor with the same
${\Delta}J^\pi$ is similar in the $^{11}$B($d, d'$) and $^{12}$C($d, d'$)
reactions. The obtained isovector and isoscalar strengths were used in the DWIA
calculations for the $^{11}$B($p, p'$) reaction. The DWIA calculation
reasonably well explains the present $^{11}$B($p, p'$) result. However, the
calculated cross section for the 8.92-MeV 3/2$^-_2$ state was significantly
smaller than the experimental values. The transition strengths obtained in the
shell-model calculations were found to be 20-50% larger than the experimental
strengths. The transition strengths for the neutrino induced reactions were
estimated by using the isovector and isoscalar spin-flip M1 strengths. The
present results are quantitatively in agreement with the theoretical estimation
discussing the axial isoscalar coupling in the neutrino scattering process, and
are useful in the measurement of the stellar neutrinos using the neutral- and
charged-current reactions on $^{11}$B.


title:
On the invariance of Scaled Factorial Moments when original distribution
  is folded with the binomial

abstract:
  It is shown, that the Scaled Factorial Moments of any rank do not change if
the original distribution is folded with a binomial one.


title:
Cascade population of levels and probable phase transition in vicinity
  of the excitation energy ~0.5Bn of heavy nucleus

abstract:
  From the comparison of absolute intensities of the two-step gamma-cascades
and known intensities of their primary and secondary transitions, the cascade
and total population of about ~100 levels of 181Hf and 184,185,187W excited in
thermal neutron capture was determined. These experimental results and
intensities of two-step cascades to the low-lying levels of mentioned nuclei
were reproduced in calculation using level densities with clearly expressed
step-like structure. Radiative strength functions of the primary transitions
following gamma-decay of these compound nuclei to the levels in the region of
pointed structure are considerably enhanced. Moreover, population of levels
below 3 MeV can be reproduced only with accounting for local and rather
considerable increase in radiative strength functions of the secondary
transitions to the levels in vicinities of break points in energy dependence of
level density and significant decrease of that to lower-lying states.
Simultaneous change in both level density and strength functions in the same
excitation region of a nucleus corresponds to the definition of the
second-order phase transition.


title:
System-size dependence of strangeness production in nucleus-nucleus
  collisions at sqrt{s_{NN}}=17.3 GeV

abstract:
  Emission of pi, K, phi and Lambda was measured in near-central C+C and Si+Si
collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S and
Pb+Pb, the system-size dependence of relative strangeness production in
nucleus-nucleus collisions is obtained. Its fast rise and the saturation
observed at about 60 participating nucleons can be understood as onset of the
formation of coherent partonic subsystems of increasing size.


title:
Measurement of a complete set of nuclides, cross-sections and kinetic
  energies in spallation of 238U 1A GeV with protons

abstract:
  Spallation residues and fission fragments from 1A GeV 238U projectiles
irradiating a liquid hydrogen target were investigated by using the FRagment
Separator at GSI for magnetic selection of reaction products including
ray-tracing, energy-loss and time-of-flight techniques. The
longitudinal-momentum spectra of identified fragments were analysed, and
evaporation residues and fission fragments could be separated. For 1385
nuclides, production cross-sections covering 3 orders of magnitude with a mean
accuracy of 15%, velocities in the U-rest frame and kinetic energies were
determined. In the reaction all elements from uranium to nitrogen were found,
each with a large number of isotopes.


title:
Analysis of experimental uncertainties in the R-correlation measurement
  in the decay of free neutrons

abstract:
  The experiment aiming at the simultaneous determination of the two
transversal polarisation components of electrons emitted in the decay of free,
polarised neutrons is in progress at the Paul Scherrer Institute (Villigen,
Switzerland). The non-zero value of R coefficient, proportional to the
polarisation component, which is perpendicular to the plane spanned by the spin
of the decaying neutron and the electron momentum, would prove a violation of
time reversal symmetry and thus physics beyond the Standard Model. The planned
accuracy of the measurement is of order 0.005. To reach this value, the
systematic effects in the experiment have to be controlled on a similar level
of accuracy. The emphasis of this master's thesis is put on the search of
systematic effects by the means of dedicated Monte Carlo simulation, based on
extended GEANT4 package. Implementation details are discussed and the new added
features are tested. Finally, the beta decay asymmetry induced systematic
effect, resulting in false contribution to R-coefficient is recognised and
investigated.


title: Polarization observables in the eta meson production

abstract:
  We propose to extend the investigations of the eta meson production in
nucleon-nucleon collisions by studying single and double polarization
observables. Over the last years, the eta meson has been studied at several
different experiments mainly by measurements of unpolarized total and
differential cross sections. To reveal the production mechanism, polarization
observables help to disentangle the amplitudes of the partial waves and
therefore to understand the underlying exchange processes. Analyzing powers
have been measured enabling to separate the contributing amount of some of
these amplitudes. Double polarization observables will widen the number of
accessible amplitudes and hence give further constraints to the theoretical
models. Due to the trigonometric symmetries in polarization measurements, a
symmetric detector geometry in the azimuthal angle is preferable. The WASA
detector with its 4-pi geometry for neutral and charged particles together with
the use of a frozen spin target should therefore allow to study double
polarization observables not only in vec{p}vec{p} but also in vec{p}vec{d} or
vec{d}vec{p} collisions. This first requires the development of a frozen-spin
target whereas single polarization observables can be measured directly with
the current setup.


title:
Hadronization geometry from net-charge angular correlations on momentum
  subspace ($\eta,\phi$) in Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV

abstract:
  We present the first measurements of charge-dependent correlations on angular
difference variables $\eta_1 - \eta_2$ (pseudorapidity) and $\phi_1 - \phi_2$
(azimuth) for primary charged hadrons with transverse momentum $0.15 \leq p_t
\leq 2$ GeV/$c$ and $|\eta| \leq 1.3$ from Au-Au collisions at $\sqrt{s_{NN}} =
130$ GeV. We observe correlation structures not predicted by theory but
consistent with evolution of hadron emission geometry with increasing
centrality from one-dimensional fragmentation of color strings along the beam
direction to an at least two-dimensional hadronization geometry along the beam
and azimuth directions of a hadron-opaque bulk medium.


title:
Transverse-momentum dependent modification of dynamic texture in central
  Au+Au collisions at sqrt(S_NN)=200 GeV

abstract:
  Correlations in the hadron distributions produced in relativistic Au+Au
collisions are studied in the discrete wavelet expansion method. The analysis
is performed in the space of pseudorapidity (|eta| < 1) and azimuth (full 2 pi)
in bins of transverse momentum (p_t) from 0.14 < p_t < 2.1 GeV/c. In peripheral
Au+Au collisions a correlation structure ascribed to mini-jet fragmentation is
observed. It evolves with collision centrality and p_t in a way not seen before
which suggests strong dissipation of minijet fragmentation in the
longitudinally-expanding medium.


title: Isotopic trends in nuclear multifragmentation

abstract:
  An overview of the recent progress in the studies of nuclear
multifragmentation is presented. Special emphasis is put on the exploration of
isotopic trends in nuclear multifragmentation and the possibilities to extract
physical information related to the nuclear equation of state. Relevant
experimental methods of isotope identification are described. The isotopic
composition of fragments is used to extract the values of thermodynamical
observables of the system undergoing multifragmentation such as temperature and
chemical potentials. Various methods for extraction of thermodynamical
variables are analyzed. An overview of methods of isotope thermometry,
exploring the sensitivity of various yield ratios to temperature, is presented.
An exponential scaling of relative isotopic yields from reactions with
different neutron content, called isoscaling, is used to explore the evolution
of the isospin degrees of freedom of the system. Finally, the nuclear equation
of state and the isospin-asymmetric liquid-gas phase transition in the nuclear
matter are discussed.


title:
Measurements of transverse energy distributions in Au+Au collisions at
  $\sqrt{s_{NN}}= 200$ GeV

abstract:
  Transverse energy ($E_T$) distributions have been measured for Au+Au
collisions at $\sqrt{s_{NN}}= 200$ GeV by the STAR collaboration at RHIC. $E_T$
is constructed from its hadronic and electromagnetic components, which have
been measured separately. $E_T$ production for the most central collisions is
well described by several theoretical models whose common feature is large
energy density achieved early in the fireball evolution. The magnitude and
centrality dependence of $E_T$ per charged particle agrees well with
measurements at lower collision energy, indicating that the growth in $E_T$ for
larger collision energy results from the growth in particle production. The
electromagnetic fraction of the total $E_T$ is consistent with a final state
dominated by mesons and independent of centrality.


title:
NA49 Energy Scan Results for Central Lead-Lead Collisions at the CERN
  SPS

abstract:
  The energy dependence of hadron production in central Pb-Pb collisions at SPS
energies is presented and compared with data at lower and higher energies and
with results from p-p interactions. It is observed that there is little change
in transverse activity in the SPS energy range, that there is a steepening rate
of increase of pion production and that the K+/pi+ ratio exhibits a sharp peak
located at about 30 AGeV. The Lambda/pi ratio also shows a pronounced maximum
which is weaker in Ksi/pi and absent in Omega/pi.


title:
Detailed Discussion of a linear electric field frequency shift induced
  in confined gases by a magnetic field gradient: Implications for neutron
  electric dipole moment experiments

abstract:
  The search for particle electric dipole moments (edm) is one of the best
places to look for physics beyond the standard model because the size of time
reversal violation predicted by the standard model is incompatible with present
ideas concerning the creation of the Baryon-Antibaryon asymmetry. As the
sensitivity of these edm searches increases more subtle systematic effects
become important. We develop a general analytical approach to describe a
systematic effect recently observed in an electric dipole moment experiment
using stored particles \cite{JMP}. Our approach is based on the relationship
between the systematic frequency shift and the velocity autocorrelation
function of the resonating particles. Our results, when applied to well-known
limiting forms of the correlation function, are in good agreement with both the
limiting cases studied in recent work that employed a numerical/heuristic
analysis. Our general approach explains some of the surprising results observed
in that work and displays the rich behavior of the shift for intermediate
frequencies, which has not been previously studied.


title: Open charm yields in d+Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

abstract:
  Mid-rapidity open charm spectra from direct reconstruction of
$D^{0}$($\bar{D^0}$)$\to K^{\mp}\pi^{\pm}$ in d+Au collisions and indirect
electron/positron measurements via charm semileptonic decays in p+p and d+Au
collisions at \srt = 200 GeV are reported. The $D^{0}$($\bar{D^0}$) spectrum
covers a transverse momentum ($p_T$) range of 0.1 $<p_T<$ 3 \GeVc whereas the
electron spectra cover a range of 1 $<p_T<$ 4 GeV/$c$. The electron spectra
show approximate binary collision scaling between p+p and d+Au collisions. From
these two independent analyses, the differential cross section per
nucleon-nucleon binary interaction at mid-rapidity for open charm production
from d+Au collisions at RHIC is $d\sigma^{NN}_{c\bar{c}}/dy$=0.30$\pm$0.04
(stat.)$\pm$0.09(syst.) mb. The results are compared to theoretical
calculations. Implications for charmoniumm results in A+A collisions are
discussed.


title:
Azimuthal anisotropy and correlations at large transverse momenta in
  $p+p$ and Au+Au collisions at $\sqrt{s_{_{NN}}}$= 200 GeV

abstract:
  Results on high transverse momentum charged particle emission with respect to
the reaction plane are presented for Au+Au collisions at $\sqrt{s_{_{NN}}}$=
200 GeV. Two- and four-particle correlations results are presented as well as a
comparison of azimuthal correlations in Au+Au collisions to those in $p+p$ at
the same energy. Elliptic anisotropy, $v_2$, is found to reach its maximum at
$p_t \sim 3$ GeV/c, then decrease slowly and remain significant up to
$p_t\approx 7$ -- 10 GeV/c. Stronger suppression is found in the back-to-back
high-$p_t$ particle correlations for particles emitted out-of-plane compared to
those emitted in-plane. The centrality dependence of $v_2$ at intermediate
$p_t$ is compared to simple models based on jet quenching.


title:
Helicity-Dependent Angular Distributions for Double-Charged-Pion
  Photoproduction

abstract:
  Two-pion photoproduction in the reaction gamma p -> p pi+ pi- has been
studied at Jefferson Lab Hall B using a circularly-polarized tagged photon beam
in the energy range between 0.6 GeV and 2.3 GeV. Beam-helicity-dependent
angular distributions of the final-state particles were measured. The large
cross-section asymmetries that have been found exhibit strong sensitivity to
the kinematics of the reaction, and are compared with preliminary model
calculations by Mokeev and Roberts.


title:
Charge and current-sensitive preamplifiers for pulse shape
  discrimination techniques with silicon detectors

abstract:
  New charge and current-sensitive preamplifiers coupled to silicon detectors
and devoted to studies in nuclear structure and dynamics have been developed
and tested. For the first time shapes of current pulses from light charged
particles and carbon ions are presented. Capabilities for pulse shape
discrimination techniques are demonstrated.


title: Anisotropic Flow at the Relativistic Heavy Ion Collider

abstract:
  Anisotropic flow is recognized as one of the main observables providing
information on the early stage of a heavy-ion collision. At RHIC the observed
strong collective flow of the bulk matter is considered evidence for an early
onset of thermalization, and an ideal hydrodynamical expansion with an equation
of state consistent with that obtained from lattice QCD calculations. The large
collective flow of the bulk and the inferred large energy loss of the produced
jets propagating through the created matter are key signatures for the
formation of a Quark Gluon Plasma.


title:
Measurement of the pi^+ meson polarizabilities via the gamma p->gamma
  pi^+ n reaction

abstract:
  An experiment on the radiative pi^+ meson photoproduction from the proton
(gamma p->gamma pi^+ n) was carried out at the Mainz Microtron MAMI in the
kinematic region 537 MeV <E_{gamma}<817 MeV,
140^o<theta_{gamma-gamma'}^cm<180^o. The pi^+ meson polarizabilities have been
determined from a comparison of the data with the predictions of two different
theoretical models, the first one being based on an effective pole model with
pseudoscalar coupling while the second one is based on diagrams describing both
resonant and nonresonant contributions. The validity of the models has been
verified by comparing the predictions with the present experimental data in the
kinematic region where the pion polarizability contribution is negligible
(s_1<5 mu^2) and where the difference between the predictions of the two models
does not exceed 3%. In the region, where the pion polarizability contribution
is substantial (5<s_1/mu^2<15, -12<t/mu^2<-2), the difference
(alpha-beta)_{pi^+} of the electric (alpha) and the magnetic (beta)
polarizabilities has been determined. As a result we find:
(alpha-beta)_{pi^+}=(11.6\pm 1.5_{stat}\pm 3.0_{syst}\pm 0.5_{mod})x10^-4fm^3.
This result is at variance with recent calculations in the framework of chiral
perturbation theory.


title:
Centrality and pseudorapidity dependence of elliptic flow for charged
  hadrons in Au+Au collisions at sqrt(sNN) = 200 GeV

abstract:
  This paper describes the measurement of elliptic flow for charged particles
in Au+Au collisions at sqrt(sNN)=200 GeV using the PHOBOS detector at the
Relativistic Heavy Ion Collider (RHIC). The measured azimuthal anisotropy is
presented over a wide range of pseudorapidity for three broad collision
centrality classes for the first time at this energy. Two distinct methods of
extracting the flow signal were used in order to reduce systematic
uncertainties. The elliptic flow falls sharply with increasing eta at 200 GeV
for all the centralities studied, as observed for minimum-bias collisions at
sqrt(sNN)=130 GeV.


title:
Measurement of the Polarized Structure Function $\sigma_{LT^\prime}$ for
  $p(\vec{e},e'\pi^+)n$ in the $\Delta(1232)$ Resonance Region

abstract:
  The polarized longitudinal-transverse structure function $\sigma_{LT^\prime}$
has been measured using the $p(\vec e,e'\pi^+)n$ reaction in the $\Delta(1232)$
resonance region at $Q^2=0.40$ and 0.65 GeV$^2$. No previous
$\sigma_{LT^\prime}$ data exist for this reaction channel. The kinematically
complete experiment was performed at Jefferson Lab with the CEBAF Large
Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at an
energy of 1.515 GeV. A partial wave analysis of the data shows generally better
agreement with recent phenomenological models of pion electroproduction
compared to the previously measured $\pi^0 p$ channel. A fit to both $\pi^0 p$
and $\pi^+ n$ channels using a unitary isobar model suggests the unitarized
Born terms provide a consistent description of the non-resonant background. The
$t$-channel pion pole term is important in the $\pi^0 p$ channel through a
rescattering correction, which could be model-dependent.


title: Ambiguity of gamma-ray tracking of "two-interaction" events

abstract:
  Tracking of gamma-ray interactions in germanium detectors can allow
reconstruction of the photon paths, and is useful for many applications.
Scrutiny of the kinematics and geometry of gamma rays which are Compton
scattered only once prior to full absorption reveals that there are cases where
even perfect spatial and energy resolution cannot resolve the true interaction
sequence and consequently gamma-ray tracks cannot be reconstructed. The photon
energy range where this ambiguity exists is from 255 keV to around 700 keV.
This is a region of importance for nuclear structure research where two-point
interactions are probable.


title:
Excitation Functions of the Analyzing Power in Elastic Proton-Proton
  Scattering from 0.45 to 2.5 GeV

abstract:
  Excitation functions A_N(p_{lab},Theta_{c.m.}) of the analyzing power in
elastic proton-proton scattering have been measured in an internal target
experiment at the Cooler Synchrotron COSY with an unpolarized proton beam and a
polarized atomic hydrogen target. Data were taken continuously during the
acceleration and deceleration for proton kinetic energies T_{lab} (momenta
p_{lab}) between 0.45 and 2.5 GeV (1.0 and 3.3 GeV/c) and scattering angles 30
deg < Theta_{c.m.} < 90 deg. The results provide excitation functions and
angular distributions of high precision and internal consistency. The data can
be used as calibration standard between 0.45 and 2.5 GeV. They have significant
impact on phase shift solutions, in particular on the spin triplet phase shifts
between 1.0 and 1.8 GeV.


title: Observation of beta decay of In-115 to the first excited level of Sn-115

abstract:
  In the context of the LENS R&D solar neutrino project, the gamma spectrum of
a sample of metallic indium was measured using a single experimental setup of 4
HP-Ge detectors located underground at the Gran Sasso National Laboratories
(LNGS), Italy. A gamma line at the energy (497.48 +/- 0.21) keV was found that
is not present in the background spectrum and that can be identified as a gamma
quantum following the beta decay of In-115 to the first excited state of Sn-115
(9/2+ --> 3/2+). This decay channel of In-115, which is reported here for the
first time, has an extremely low Q-value, Q = (2 +/- 4) keV, and has a much
lower probability than the well-known ground state-ground state transition,
being the branching ratio b = (1.18 +/- 0.31) 10^-6. This could be the beta
decay with the lowest known Q-value. The limit on charge non-conserving beta
decay of In-115 is set at 90% C.L. as tau > 4.1 10^20 y.


title: A New Precision Measurement of the 3He(4He,gamma)7Be Cross section

abstract:
  The 3He(4He,gamma)7Be reaction plays an important role in determining the
high energy solar neutrino flux and in understanding the abundances of
primordial 7Li. The present paper reports a new precision measurement of the
cross sections of this direct capture reaction, determined by measuring the
ensuing 7Be activity in the region of Ec.m.=400 keV to 950 keV. Various recent
theoretical fits to our data result in a consistent extrapolated value of
S34(0)=0.53(2)(1).


title:
Measurement of the Analyzing Power in $\vec{p}d \to (pp)n$ \\with a Fast
  Forward $^1S_0$--Diproton

abstract:
  A measurement of the analyzing power $A_y$ of the $\vec{p}d \to (pp) + n$
reaction was carried out at beam energies of 0.5 and 0.8 GeV by detection of a
fast forward proton pair of small excitation energy $E_{pp} < 3$ MeV. The
kinematically complete experiment made use of the ANKE spectrometer at the
internal beam of COSY and a deuterium cluster--jet target. For the first time
the $S$--wave dominance in the fast diproton is experimentally demonstrated in
this reaction. While at $T_p=0.8$ GeV the measured analyzing power $A_y$
vanishes, it reaches almost unity at $T_p=0.5$ GeV for neutrons scattered at
$\theta_n^{c.m.}=167^\circ$. The results are compared with a model taking into
account one--nucleon exchange, single scattering and $\Delta$ (1232) excitation
in the intermediate state. The model describes fairly well the unpolarized
cross section obtained earlier by us and the analyzing power at 0.8 GeV, it
fails to reproduce the angular dependence of $A_y$ at 0.5 GeV.


title: Elliptic Flow and Semi-hard Scattering at SPS

abstract:
  Results on elliptic flow and two-particle correlations in the semi-hard
regime are presented.


title: Electromagnetic Meson Production in the Nucleon Resonance Region

abstract:
  Recent experimental and theoretical advances in investigating electromagnetic
meson production reactions in the nucleon resonance region are reviewed.


title:
A Comprehensive New Detector for Detailed Study of the Quark Gluon
  Plasma, Initial Conditions and Spin Physics at RHIC II

abstract:
  A case is presented for compelling physics at a high luminosity RHIC II
collider and a comprehensive new detector system to address this physics. The
experimental focus is on detailed jet tomography of the quark gluon plasma
(QGP), measuring gluon saturation in the nucleus, investigating the color glass
condensate, measuring effects of the QCD vacuum on particle masses, determining
the structure and dynamics within the proton, and possible new phenomena. The
physics and detector capabilities are introduced.


title:
Thermal up-scattering of very cold and ultra-cold neutrons in solid
  deuterium

abstract:
  The work presented in this thesis forms part of a program at the Paul
Scherrer Institute (PSI) to construct a high intensity superthermal ultra-cold
neutron (UCN) source based on solid deuterium as UCN production medium. We
carried out a set of experiments to gain a better understanding of the
properties and the behaviour of solid deuterium as a cold neutron moderator and
ultra-cold neutron converter.
  We present the measurements of the total neutron cross section as obtained by
transmission studies with very cold neutrons and ultra-cold neutrons in solid
deuterium. The experimental set-up and the methods of data analysis are
described and also the procedure of preparing the solid deuterium samples is
given. The neutron transmission studies are supported by optical investigation
of the crystal and by Raman spectroscopy. We have thus characterised the
temperature dependence of the neutron transmission through solid deuterium and
we have been able to identify the role that coherent neutron scattering plays
for the investigated deuterium samples.


title:
Isotopic and velocity distributions of Bi produced in charge-pickup
  reactions of 208Pb at 1 A GeV

abstract:
  Isotopically resolved cross sections and velocity distributions have been
measured in charge-pickup reactions of 1 A GeV 208Pb with proton, deuterium and
titanium target. The total and partial charge-pickup cross sections in the
reactions 208Pb + 1H and 208Pb + 2H are measured to be the same in the limits
of the error bars. A weak increase in the total charge-pickup cross section is
seen in the reaction of 208Pb with the titanium target. The measured velocity
distributions show different contributions - quasi-elastic scattering and
Delta-resonance excitation - to the charge-pickup production. Data on total and
partial charge-pickup cross sections from these three reactions are compared
with other existing data and also with model calculations based on the coupling
of different intra-nuclear cascade codes and an evaporation code.


title: Threshold Hyperon Production at COSY-11

abstract:
  The Lambda, Sigma0 and Sigma+ hyperon production in NN collisions is studied
at the COSY - 11 installation in order to investigate the production mechanism
as well as to extract information about the Y-N interaction.


title: The 18F(p,a)15O reaction rate for application to nova gamma-ray emission

abstract:
  The 18F(p,a)15O reaction is recognized as one of the most important reaction
for nova gamma-ray astronomy as it governs the early <= 511 keV emission.
However, its rate remains largely uncertain at nova temperatures due to unknown
low-energy resonance strengths. We report here on our last results concerning
the study of the D(18F,pa)15N reaction, as well as on the determination of the
18F(p,a)15O reaction rate using the R-matrix theory. Remaining uncertainties
are discussed.


title:
Tracing the Evolution of Temperature in Near Fermi Energy Heavy Ion
  Collisions

abstract:
  The kinetic energy variation of emitted light clusters has been employed as a
clock to explore the time evolution of the temperature for thermalizing
composite systems produced in the reactions of 26A, 35A and 47A MeV $^{64}$Zn
with $^{58}$Ni, $^{92}$Mo and $^{197}$Au. For each system investigated, the
double isotope ratio temperature curve exhibits a high maximum apparent
temperature, in the range of 10-25 MeV, at high ejectile velocity. These
maximum values increase with increasing projectile energy and decrease with
increasing target mass. The time at which the maximum in the temperature curve
is reached ranges from 80 to 130 fm/c after contact. For each different target,
the subsequent cooling curves for all three projectile energies are quite
similar. Temperatures comparable to those of limiting temperature systematics
are reached 30 to 40 fm/c after the times corresponding to the maxima, at a
time when AMD-V transport model calculations predict entry into the final
evaporative or fragmentation stage of de-excitation of the hot composite
systems. Evidence for the establishment of thermal and chemical equilibrium is
discussed.


title:
Investigation of the conjectured nucleon deformation at low momentum
  transfer

abstract:
  We report new precise H$(e,e^\prime p)\pi^0$ measurements at the
$\Delta(1232)$ resonance at $Q^2= 0.127$ (GeV/c)$^2$ using the MIT/Bates
out-of-plane scattering (OOPS) facility. The data reported here are
particularly sensitive to the transverse electric amplitude ($E2$) of the
$\gamma^* N\to\Delta$ transition. Analyzed together with previous data yield
precise quadrupole to dipole amplitude ratios $EMR = (-2.3 \pm 0.3_{stat+sys}
\pm 0.6_{model})%$ and $CMR = (-6.1 \pm 0.2_{stat+sys}\pm 0.5_{model})%$ and
for $M^{3/2}_{1+} = (41.4 \pm 0.3_{stat+sys}\pm
0.4_{model})(10^{-3}/m_{\pi^+})$. They give credence to the conjecture of
deformation in hadronic systems favoring, at low $Q^2$, the dominance of
mesonic effects.


title:
Forward Physics at STAR: Status of analysis on forward and mid rapidity
  correlation measurements in p+p and d+Au

abstract:
  Measurements of the production of high energy pi0 mesons at large
pseudorapidity, coincident with charged hadrons at mid-rapidity, for
proton+proton and deuteron+gold collisions at sqrt(s)_NN=200 GeV are reported.
The p+p cross section for inclusive pi0 production follows expectations from
next-to-leading order perturbative QCD. Both the inclusive cross section and
the di-hadron azimuthal correlations are consistent with a model where parton
showers supplement leading-order pQCD. A suppression of the back-to-back
azimuthal correlations was observed in d+Au, qualitatively consistent with the
gluon saturation picture.


title: New determination of the Nuclear Quadrupole Moments of In isotopes

abstract:
  We present here a new determination of the quadrupole moment Q of
hyperfine-probe-nuclei states of three different In isotopes: the 5+ 192 keV
excited state of 114In (probe for Nuclear Orientation experiments), the 9/2+
ground state of 115In (Nuclear Magnetic and Nuclear Quadrupole Resonance probe)
and the 3/2+ 659 keV excited state of 117In (Perturbed-Angular-Correlations
probe). These nuclear quadrupole values were determined by comparing
experimental nuclear-quadrupole frequencies with the electric-field-gradient
tensor (EFG) calculated at In sites in metallic Indium within the
Density-Functional Theory. These accurate ab initio calculations were performed
with the WIEN97.10 implemenattion of the Full-Potential Linearized-Augmented
Plane-Wave method. The obtained results for the quadrupole moments [Q(114In) =
-0.14(1) b; Q(115In) = -0.77(1) b; Q(117In) = 0.59(1) b] are in clear
discrepancy with those reported in the literature [Q(114In) = +0.14(6) b;
Q(115In) = +0.861(45) b; Q(117In) = 0.64(4) b].


title: Detection of the Natural Alpha Decay of Tungsten

abstract:
  The natural alpha decay of 180W has been unambiguously detected for the first
time. The alpha peak is found in a (gamma,beta and neutron)-free background
spectrum. This has been achieved by the simultaneous measurement of phonon and
light signals with the CRESST cryogenic detectors. A half-life of T1/2 = (1.8
+- 0.2) x 10^18 y and an energy release of Q = (2516.4 +- 1.1 (stat.) +- 1.2
(sys.)) keV have been measured. New limits are also set on the half-lives of
the other naturally occurring tungsten isotopes.


title:
Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200
  GeV

abstract:
  Two particle correlations between identified meson and baryon trigger
particles with 2.5 < p_T < 4.0 GeV/c and lower p_T charged hadrons have been
measured at midrapidity by the PHENIX experiment at RHIC in p+p, d+Au and Au+Au
collisions at sqrt(s_NN) = 200 GeV. The probability of finding a hadron near in
azimuthal angle to the trigger particle is almost identical for leading mesons
and baryons for non-central Au+Au. The yield for both trigger baryons and
mesons is significantly higher in Au+Au than in p+p and d+Au, except for
trigger baryons in central collisions. The baryon excess is likely to arise
predominantly from hard scattering processes.


title: Laser Spectroscopic Determination of the 6He Nuclear Charge Radius

abstract:
  We have performed precision laser spectroscopy on individual 6He (t1/2 = 0.8
s) atoms confined and cooled in a magneto-optical trap, and measured the
isotope shift between 6He and 4He to be 43,194.772 +/- 0.056 MHz for the 2 3S1
- 3 3P2 transition. Based on this measurement and atomic theory, the nuclear
charge radius of 6He is determined, for the first time in a method independent
of nuclear models, to be 2.054 +/- 0.014 fm. The result is compared with the
values predicted by a number of nuclear structure calculations, and tests their
ability to characterize this loosely bound, halo nucleus.


title:
Measurement of the neutron lifetime using a gravitational trap and a
  low-temperature Fomblin coating

abstract:
  We present a new value for the neutron lifetime of 878.5 +- 0.7 stat. +- 0.3
syst. This result differs from the world average value (885.7 +- 0.8 s) by 6.5
standard deviations and by 5.6 standard deviations from the previous most
precise result. However, this new value for the neutron lifetime together with
a beta-asymmetry in neutron decay, Ao, of -0.1189(7) is in a good agreement
with the Standard Model.


title:
UCN anomalous losses and the UCN capture cross-section on material
  defects

abstract:
  Experimental data shows anomalously large Ultra Cold Neutrons (UCN)
reflection losses and that the process of UCN reflection is not completely
coherent. UCN anomalous losses under reflection cannot be explained in the
context of neutron optics calculations. UCN losses by means of incoherent
scattering on material defects are considered and cross-section values
calculated. The UCN capture cross-section on material defects is enhanced by a
factor of 10^4 due to localization of UCN around defects. This phenomenon can
explain anomalous losses of UCN.


title: Hypernuclear Spectroscopy using the (e,e'K+) Reaction

abstract:
  A pioneering experiment in Lambda hypernuclear spectroscopy, undertaken at
the Thomas Jefferson National Accelerator Facility (Jlab), was recently
reported. The experiment used the high- precision, continuous electron beam at
Jlab, and a special arrangement of spectrometer magnets to measure the spectrum
from {nat}C and 7Li targets using the (e,e' K+)reaction. The 12B hypernuclear
spectrum was previously published. This experiment is now reported in more
detail, with improved results for the 12B hypernuclear spectrum. In addition,
unpublished results of the 7He hypernuclear spectrum are also shown. This later
spectrum indicates the need for a more detailed few-body calculation of the
hypernucleus and the reaction process. The success of this experiment
demonstrates that the (e,e'K+) reaction can be effectively used as a high
resolution tool to study hypernuclear spectra, ant its use should be vigorously
pursued.


title:
Two-particle correlations on transverse momentum and momentum
  dissipation in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV

abstract:
  Measurements of two-particle correlations on transverse momentum $p_t$ for
Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV are presented. Significant
large-momentum-scale correlations are observed for charged primary hadrons with
$0.15 \leq p_t \leq 2$ GeV/$c$ and pseudorapidity $|\eta| \leq 1.3$. Such
correlations were not observed in a similar study at lower energy and are not
predicted by theoretical collision models. Their direct relation to mean-$p_t$
fluctuations measured in the same angular acceptance is demonstrated. Positive
correlations are observed for pairs of particles which have large $p_t$ values
while negative correlations occur for pairs in which one particle has large
$p_t$ and the other has much lower $p_t$. The correlation amplitudes per final
state particle increase with collision centrality. The observed correlations
are consistent with a scenario in which the transverse momentum of hadrons
associated with initial-stage semi-hard parton scattering is dissipated by the
medium to lower $p_t$.


title:
Measurement of Rlt and Atl in the 4He(e,e'p)3H Reaction at pmiss of
  130-300 MeV/c

abstract:
  We have measured the 4He(e,e'p)3H reaction at missing momenta of 130-300
MeV/c using the three-spectrometer facility at the Mainz microtron MAMI. Data
were taken in perpendicular kinematics to allow us to determine the response
function Rlt and the asymmetry term Atl. The data are compared to both
relativistic and non-relativistic calculations.


title: HBT: A (mostly) experimental overview

abstract:
  I will present a review of the field of Hanbury Brown-Twiss interferometry in
relativistic heavy-ion collisions. The "HBT puzzle" is explored in detail,
emphasizing recent theoretical attempts to understand the persisting puzzle. I
also present recent experimental results on azimuthally sensitive HBT, HBT of
direct photons, and some surprises in the comparison of HBT results from p+p
and Au+Au collisions at RHIC.


title:
Measurement of the 3He(e,e'p)pn reaction at high missing energies and
  momenta

abstract:
  Results of the Jefferson Lab Hall A quasielastic 3He(e,e'p)pn measurements
are presented. These measurements were performed at fixed transferred momentum
and energy, q = 1502 MeV/c and omega = 840 MeV, respectively, for missing
momenta p_m up to 1 GeV/c and missing energies in the continuum region, up to
pion threshold; this kinematic coverage is much more extensive than that of any
previous experiment. The cross section data are presented along with the
effective momentum density distribution and compared to theoretical models.


title:
Pseudorapidity Asymmetry and Centrality Dependence of Charged Hadron
  Spectra in d+Au Collisions at $\sqrt{s_{NN}}=200$ GeV

abstract:
  The pseudorapidity asymmetry and centrality dependence of charged hadron
spectra in d+Au collisions at $\sqrt{s_{NN}}=200$ GeV are presented. The
charged particle density at mid-rapidity, its pseudorapidity asymmetry and
centrality dependence are reasonably reproduced by a Multi-Phase Transport
model, by HIJING, and by the latest calculations in a saturation model. Ratios
of transverse momentum spectra between backward and forward pseudorapidity are
above unity for \pT below 5 GeV/$c$. The ratio of central to peripheral spectra
in d+Au collisions shows enhancement at 2 $<$ \pT $<$ 6 GeV/$c$, with a larger
effect at backward rapidity than forward rapidity. Our measurements are in
qualitative agreement with gluon saturation and in contrast to calculations
based on incoherent multiple partonic scatterings.


title: Transition strengths from 10B(e,e')10B

abstract:
  Inelastic electron scattering form factors for 10B are fitted with polynomial
times Gaussian expressions in the variable y = (bq/2)**2 to extract
electromagnetic transition strengths at the photon point.


title: Direct measurement of the 14N(p,g)15O S-factor

abstract:
  We have measured the 14N(p,g)15O excitation function for energies in the
range E_p = 155--524 keV. Fits of these data using R-matrix theory yield a
value for the S-factor at zero energy of 1.64(17) keV b, which is significantly
smaller than the result of a previous direct measurement. The corresponding
reduction in the stellar reaction rate for 14N(p,g)15O has a number of
interesting consequences, including an impact on estimates for the age of the
Galaxy derived from globular clusters.


title: Search for Pentaquark States with CLAS at Jefferson Lab

abstract:
  We discuss the experimental program to search for baryon states with exotic
flavor quantum numbers using CLAS at Jefferson Lab.


title:
Two-photon exchange and elastic scattering of electrons/positrons on the
  proton. (Proposal for an experiment at VEPP-3)

abstract:
  It has been suggested that two-photon exchange corrections could explain the
discrepancy between Rosenbluth extractions of the proton form factors and
recent polarization transfer measurements. We propose a precise comparison of
electron-proton and positron-proton scattering at Q^2=1.6 GeV^2 to determine if
two-photon exchange at moderate Q^2 values is in fact able to explain the
discrepancy.


title: Collision Dynamics at RHIC

abstract:
  Measurements of a variety of hadron species in Au+Au collisions at 200 GeV by
the STAR experiment are used to investigate properties of such collisions. We
present a study of particle yields and transverse momentum spectra within the
framework of chemical and local kinetic equilibrium models. The extracted
freeze-out properties are studied as function of collision centrality. Those
properties together with inferred initial conditions provide insights about
collision dynamics at RHIC.


title: Freeze-out dynamics at RHIC

abstract:
  Investigation of the final hadronic state properties of ultra-relativistics
pp and Au+Au collisions supplies information on freeze-out conditions at RHIC
and possible insights into early stages of these collisions. A variety of
particle spectra measured by STAR are studied within the framework of chemical
and local kinetic equlibrium models. Here we present the extracted chemical and
final kinetic freeze-out temperatures, strangeness saturation factor, final
collective flow velocity, and the inferred flow velocity at chemical
freeze-out. In light of those measurements we disscuss dynamical evoution of
the collission system.


title: Towards the excitation function of the pp -> ppK+K- reaction at COSY-11

abstract:
  The ongoing discussion concerning the nature of the scalar resonances
f_0(980) and a_0(980) implicated to extend the studies of the pp -> ppK+K-
reaction near the production threshold. Furthermore, such elementary production
processes allow to study the interaction of the outgoing particles due to their
low relative momenta. Therefore, final state interactions in the pK or K Anti-K
system can be perfectly studied in such experiments. The acquired data at the
excess energies Q=10 and 28 MeV have been taken at COSY-11 and the status of
the ongoing analysis will be presented.


title:
Transverse Momentum and Rapidity Dependence of HBT Correlations in Au+Au
  Collisions at sqrt(s_NN) = 62.4 and 200 GeV

abstract:
  Two-particle correlations of identical charged pion pairs from Au+Au
collisions at sqrt(s_NN) = 62.4 and 200 GeV were measured by the PHOBOS
experiment at RHIC. Data for the 15% most central events were analyzed with
Bertsch-Pratt and Yano-Koonin-Podgoretskii parameterizations using pairs with
rapidities of 0.4 < y_{\pi\pi} < 1.3 and transverse momenta 0.1 < k_T < 1.4
GeV/c. The Bertsch-Pratt radii R_o and R_l decrease as a function of pair
transverse momentum, while R_s is consistent with a weaker dependence. R_o and
R_s are independent of collision energy, while R_l shows a slight increase. The
source rapidity y_{ykp} scales roughly with the pair rapidity y_{\pi\pi},
indicating strong dynamical correlations.


title:
Forward and midrapidity like-particle ratios from p+p collisions at
  sqrt(s)=200 GeV

abstract:
  We present a measurement of pi-\pi+, K-/K+ and pbar/p from p+p collisions at
sqrt(s) = 20 0GeV over the rapidity range 0<y<3.4. For pT < 2.0 GeV/c we see no
significant transverse momentum dependence of the ratios. All three ratios are
independent of rapidity for y ~< 1.5 and then steadily decline from y ~ 1.5 to
y ~ 3. The pi-\pi+ ratio is below unity for y > 2.0. The pbar/p ratio is very
similar for p+p and 20% central Au+Au collisions at all rapidities. In the
fragmentation region the three ratios seem to be independent of beam energy
when viewed from the rest frame of one of the protons. Theoretical models based
on quark-diquark breaking mechanisms overestimate the pbar/p ratio up to y ~<
3. Including additional mechanisms for baryon number transport such as baryon
junctions leads to a better description of the data.


title:
Charged antiparticle to particle ratios near midrapidity in p+p
  collisions at sqrt(s_NN)=200 GeV

abstract:
  The ratios of the yields of primary charged antiparticles to particles have
been obtained for pions, kaons, and protons near midrapidity for p+p collisions
at sqrt(s_NN) = 200 GeV. Ratios of <pi-/pi+>=1.000 +/- 0.012 (stat.) +/- 0.019
(syst.), <K-/K+>=0.93 +/- 0.05 (stat.) +/- 0.03 (syst.), and <pbar/p>=0.85 +/-
0.04 (stat.) +/- 0.03 (syst.) have been measured. The reported values represent
the ratio of the yields averaged over the rapidity range of 0.1<y_{pi}<1.3 and
0<y_{K,p}<0.8, and for transverse momenta of 0.1<p_T^{pi,K}<1.0 GeV/c and
0.3<p_T^{p}<1.0 GeV/c. Within the uncertainties, all three ratios are
consistent with the values measured in d+Au collisions at the same energy. The
data are compared to results from other collision systems and energies.


title:
Omega and Antiomega production in central Pb+Pb collisions at 40 and 158
  AGeV

abstract:
  Results are presented on Omega production in central Pb+Pb collisions at 40
and 158 AGeV beam energy. Given are transverse-mass spectra, rapidity
distributions, and total yields for the sum Omega+Antiomega at 40 AGeV and for
Omega and Antiomega separately at 158 AGeV. The yields are strongly
under-predicted by the string-hadronic UrQMD model and are in better agreement
with predictions from a hadron gas models.


title:
The Quasielastic 3He(e,e'p)d Reaction at Q^2 = 1.5 GeV^2 for Recoil
  Momenta up to 1 GeV/c

abstract:
  We have studied the quasielastic 3He(e,e'p)d reaction in perpendicular
coplanar kinematics, with the energy and momentum transferred by the electron
fixed at 840 MeV and 1502 MeV/c, respectively. The 3He(e,e'p)d cross section
was measured for missing momenta up to 1000 MeV/c, while the A_TL asymmetry was
extracted for missing momenta up to 660 MeV/c. For missing momenta up to 150
MeV/c, the measured cross section is described well by calculations that use a
variational ground-state wave function of the 3He nucleus derived from a
potential that includes three-body forces. For missing momenta from 150 to 750
MeV/c, strong final-state interaction effects are observed. Near 1000 MeV/c,
the experimental cross section is more than an order of magnitude larger than
predicted by available theories. The A_TL asymmetry displays characteristic
features of broken factorization, and is described reasonably well by available
models.


title:
Results from PHENIX on Deuteron and Anti-Deuteron Production in Au+Au
  Collisions at RHIC

abstract:
  Results from the PHENIX Collaboration on the production of deuterons and
anti-deuterons in collisions between gold nuclei at a nucleon-nucleon
center-of-mass energy of sqrt(s) = 200 GeV are presented.


title:
Mesonic and nonmesonic weak decay widths of medium-heavy lambda
  hypernuclei

abstract:
  We have measured the energy spectra of pions and protons emitted in the weak
decay of 12_Lambda_C, 28_Lambda_Si, and Lambda_Fe hypernuclei produced via the
(pi+, K+) reaction. The decay widths of the pi- mesonic decay (Lambda -> p +
pi-) and the nonmesonic decay (Lambda + N -> N + N) were extracted. The present
results demonstrate an increase of the mesonic decay width due to a distortion
of the pion wave function in nuclear medium for the first time. The ratios of
the neutron- to proton-induced nonmesonic decay widths, Gamma_n(Lambda + n -> n
+ n)/Gamma_p(Lambda + p -> n + p), were evaluated by a direct comparison of the
measured proton energy spectra with the calculated ones. No theoretical
calculation which has been proposed so far can simultaneously account for both
the nonmesonic decay widths and the Gamma_n/Gamma_p ratios in the present data.


title:
Two-proton small-angle correlations in central heavy-ion collisions: a
  beam-energy and system-size dependent study

abstract:
  Small-angle correlations of pairs of protons emitted in central collisions of
Ca + Ca, Ru + Ru and Au + Au at beam energies from 400 to 1500 MeV per nucleon
are investigated with the FOPI detector system at SIS/GSI Darmstadt.
Dependences on system size and beam energy are presented which extend the
experimental data basis of pp correlations in the SIS energy range
substantially. The size of the proton-emitting source is estimated by comparing
the experimental data with the output of a final-state interaction model which
utilizes either static Gaussian sources or the one-body phase-space
distribution of protons provided by the BUU transport approach. The trends in
the experimental data, i.e. system-size and beam energy dependences, are well
reproduced by this hybrid model. However, the pp correlation function is found
rather insensitive to the stiffness of the equation of state entering the
transport model calculations.


title: Multiplicity fluctuations in nuclear collisions at 158 A GeV

abstract:
  System size dependence of multiplicity fluctuations of charged particles
produced in nuclear collisions at 158 A GeV was studied in the NA49 CERN
experiment. Results indicate a non-monotonic dependence of the scaled variance
of the multiplicity distribution with a maximum for semi-peripheral Pb+Pb
interactions with number of projectile participants of about 35. This effect is
not observed in a string-hadronic model of nuclear collision HIJING.


title:
Effect of nuclear transparency from the (p,2p) measurements on 6Li and
  12C at 1 GeV

abstract:
  We studied the production of protons to the backward direction in (p,2p)
reactions on 6Li and 12C, accompanied by a proton emitted into the forward
hemisphere. The momenta of the final two protons were measured in a wide range
with the two-arm time-of-flight spectrometer. For each event we reconstructed
the mass of the intermediate off-shell particles. We have discovered a strong
narrow dip in the mass spectra of intermediate mesons at the mass of the real
pion.


title: Jet Quenching at RHIC

abstract:
  We present high transverse momentum ($p_T$) measurements made at the
Relativistic Heavy Ion Collider (RHIC) for Au+Au, d+Au, and p+p collisions at
$\sqrt{s_{NN}} = 200$ GeV, as well as for Au+Au collisions at $\sqrt{s_{NN}} =
62$ GeV. We observe a suppression in the yield of high $p_T$ hadrons measured
in central Au+Au collisions, relative to the yield in p+p collisions scaled by
the number of binary nucleon-nucleon collisions. This observation, together
with the absence of such a suppression in d+Au collisions, leads to the
conclusion that a dense medium is formed in central Au+Au collisions.


title: Monochromatic gamma emitter for low energy quanta

abstract:
  The possibility of creating of a monochromatic gamma emitter of low energy
quanta is analyzed. The idea is based on Daning's scheme. Except for purely
scientific problems the monochromator is actual for therapy of wide range of
diseases.


title:
Complete measurement of three-body photodisintegration of 3He for photon
  energies between 0.35 and 1.55 GeV

abstract:
  The three-body photodisintegration of 3He has been measured with the CLAS
detector at Jefferson Lab, using tagged photons of energies between 0.35 GeV
and 1.55 GeV. The large acceptance of the spectrometer allowed us for the first
time to cover a wide momentum and angular range for the two outgoing protons.
Three kinematic regions dominated by either two- or three-body contributions
have been distinguished and analyzed. The measured cross sections have been
compared with results of a theoretical model, which, in certain kinematic
ranges, have been found to be in reasonable agreement with the data.


title:
ZnWO_4 crystals as detectors for double beta decay and dark matter
  experiments

abstract:
  Energy resolution, alpha/beta ratio, and the pulse shape discrimination
ability of the ZnWO_4 crystal scintillators were studied. The radioactive
contamination of a ZnWO_4 crystal was investigated in the Solotvina Underground
Laboratory. Possibilities to apply ZnWO_4 crystals for the dark matter and
double beta decay searches are discussed. New improved half-life limits on
double beta decay in zinc isotopes were established, in particular, for
EC\beta^+ decay of 64-Zn as: T_1/2^2nu > 8.9 10^18 yr and T_1/2^0nu > 3.6 10^18
yr, both at 68% CL.


title:
Systematic Studies of the Centrality and sqrt(s_NN) Dependence of
  dE_T/deta and dN_ch/deta in Heavy Ion Collisions at Mid-rapidity

abstract:
  The PHENIX experiment at RHIC has measured transverse energy and charged
particle multiplicity at mid-rapidity in Au+Au collisions at sqrt(s_NN) = 19.6,
130 and 200 GeV as a function of centrality. The presented results are compared
to measurements from other RHIC experiments, and experiments at lower energies.
The sqrt(s_NN) dependence of dE_T/deta and dN_ch/deta per pair of participants
is consistent with logarithmic scaling for the most central events. The
centrality dependence of dE_T/deta and dN_ch/deta is similar at all measured
incident energies. At RHIC energies the ratio of transverse energy per charged
particle was found independent of centrality and growing slowly with
sqrt(s_NN). A survey of comparisons between the data and available theoretical
models is also presented.


title:
On correctness of some processing operations for two-step cascade
  intensities data from the (n,2gamma) reaction

abstract:
  An influence of some incorrectness of analysis on the level densities and
radiative strength functions derived from the experimental gamma-spectra is
considered. It was shown that the obtaining of reliable data from the reaction
(n,2gamma) requires one to derive dependence of the two-step cascade
intensities on their primary transitions energy. The influence of some
conditions of an analysis of the experimental gamma-spectra from reaction
(3He,alpha) on the expected value of both level density and radiative strength
functions was estimated. The ways to decrease these uncertainties are
suggested.


title:
Astrophysical S_{17}(0) factor from a measurement of d(7Be,8B)n reaction
  at E_{c.m.} = 4.5 MeV

abstract:
  Angular distribution measurements of $^2$H($^7$Be,$^7$Be)$^2$H and
$^2$H($^7$Be,$^8$B)$n$ reactions at $E_{c.m.}\sim$~4.5 MeV were performed to
extract the astrophysical $S_{17}(0)$ factor using the asymptotic normalization
coefficient (ANC) method. For this purpose a pure, low emittance $^7$Be beam
was separated from the primary $^7$Li beam by a recoil mass spectrometer
operated in a novel mode. A beam stopper at 0$^{\circ}$ allowed the use of a
higher $^7$Be beam intensity. Measurement of the elastic scattering in the
entrance channel using kinematic coincidence, facilitated the determination of
the optical model parameters needed for the analysis of the transfer data. The
present measurement significantly reduces errors in the extracted
$^7$Be(p,$\gamma$) cross section using the ANC method. We get
$S_{17}$~(0)~=~20.7~$\pm$~2.4 eV~b.


title:
Cross Section Measurements of Charged Pion Photoproduction in Hydrogen
  and Deuterium from 1.1 to 5.5 GeV

abstract:
  The differential cross section for the gamma +n --> pi- + p and the gamma + p
--> pi+ n processes were measured at Jefferson Lab. The photon energies ranged
from 1.1 to 5.5 GeV, corresponding to center-of-mass energies from 1.7 to 3.4
GeV. The pion center-of-mass angles varied from 50 degree to 110 degree. The
pi- and pi+ photoproduction data both exhibit a global scaling behavior at high
energies and high transverse momenta, consistent with the constituent counting
rule prediction and the existing pi+ data. The data suggest possible
substructure of the scaling behavior, which might be oscillations around the
scaling value. The data show an enhancement in the scaled cross section at
center-of-mass energy near 2.2 GeV. The differential cross section ratios at
high energies and high transverse momenta can be described by calculations
based on one-hard-gluon-exchange diagrams.


title:
Effect of neutron composition and excitation energy on the primary
  fragment yield distribution in multifragmentation reaction

abstract:
  The isotopic properties of the primary and secondary fragment yield
distribution in the multifragmentation of $^{58}$Fe + $^{58}$Ni and $^{58}$Fe +
$^{58}$Fe reactions are studied with respect to the $^{58}$Ni + $^{58}$Ni
reaction at 30, 40 and 47 MeV/nucleon. The reduced neutron and proton densities
from the observed fragment yield distribution show primary fragment yield
distribution to undergo strongly secondary de-excitations. The effect is small
at the lowest excitation energy and smallest neutron-to-proton ratio and
becomes large at higher excitation energies and higher neutron-to-proton ratio.
The symmetry energy of the primary fragments deduced from the reduced neutron
density is significantly lower than that for the normal nuclei at saturation
density, indicating that the fragments are highly excited and formed at a
reduced density. Furthermore, the symmetry energy is also observed to decrease
slowly with increasing excitation energy. The observed effect is explained
using the statistical multifragmentation model.


title: Coulomb and nuclear breakup of a halo nucleus 11Be

abstract:
  Breakup reactions of the one-neutron halo nucleus 11Be on Pb and C targets at
about 70 MeV/u have been investigated by measuring the momentum vectors of the
incident 11Be, outgoing 10Be, and neutron in coincidence. The relative energy
spectra as well as the angular distributions of the 10Be+n center of mass have
been extracted for both targets. For the breakup on Pb target, the selection of
forward scattering angles is found to be effective to extract almost purely the
first-order E1 Coulomb breakup component, and to exclude the nuclear
contribution and higher-order Coulomb breakup components. This angle-selected
energy spectrum is thus used to deduce the spectroscopic factor for the
10Be(0+) 2s_1/2 configuration in 11Be which is found to be 0.72+-0.04 with
B(E1) up to Ex=4 MeV of 1.05+-0.06 e2fm2. The energy weighted E1 strength up to
Ex=4 MeV explains 70+-10% of the cluster sum rule, consistent with the obtained
spectroscopic factor. The non-energy weighted sum rule is used to extract the
root mean square distance of the halo neutron to be 5.77(16) fm, consistent
with previously known values. In the breakup with C target, we have observed
the excitations to the known unbound states in 11Be at Ex=1.78 MeV and 3.41
MeV. Angular distributions for these states show the diffraction pattern
characteristic of L=2 transitions, resulting in J^pi =(3/2,5/2)+ assignment for
these states. We finally find that even for the C target the E1 Coulomb direct
breakup mechanism becomes dominant at very forward angles.


title:
Scaling of Charged Particle Production in d+Au Collisions at sqrt(s_NN)
  = 200 GeV

abstract:
  The measured pseudorapidity distributions of primary charged particles over a
wide pseudorapidity range of |eta| < 5.4 and integrated charged particle
multiplicities in d+Au collisions at sqrt(s_NN) = 200 GeV are presented as a
function of collision centrality. The longitudinal features of d+Au collisions
at sqrt(s_NN) = 200 GeV are found to be very similar to those seen in p + A
collisions at lower energies. The total multiplicity of charged particles is
found to scale with the total number of participants according to N^{dAu}_{ch}
= 1/2 <N_{part}> N^{pp}_{ch} and the energy dependence of the density of
charged particles produced in the fragmentation region exhibits extensive
longitudinal scaling.


title: Event-by-event fluctuations at SPS

abstract:
  Results on event-by-event fluctuations of the mean transverse momentum and
net charge in Pb-Au collisions, measured by the CERES Collaboration at
CERN-SPS, are presented. We discuss the centrality and beam energy dependence
and compare our data to cascade calculations.


title:
Centrality and $\sqrt{s_{NN}} Dependence of the $dE_{T}/d\eta$ and
  $dN_{ch}/d\eta$ in Heavy Ion Collisions at Mid-Rapidity

abstract:
  The PHENIX experiment at RHIC has measured transverse energy and charged
particle multiplicity at mid-rapidity in Au + Au collisions at $\sqrt{s_{NN}}$
= 19.6, 130, 62.4 and 200 GeV as a function of centrality. The presented
results are compared to measurements from other RHIC experiments, and
experiments at lower energies. The $\sqrt{s_{NN}}$ dependence of $dE_{T}/d\eta$
and $dN_{ch}/d\eta$ per pair of participants is consistent with logarithmic
scaling for the most central events. The centrality dependence of
$dE_{T}/d\eta$ and $dN_{ch}/d\eta$ is similar at all measured incident
energies. At RHIC energies the ratio of transverse energy per charged particle
was found independent of centrality and growing slowly with $\sqrt{s_{NN}}$. A
survey of comparisons between the data and available theoretical models is also
presented.


title: Probing jet properties via two particle correlation method

abstract:
  The formulae for calculating jet fragmentation momentum, $<j_T^2>$, and
parton transverse momentum, $<k_T^2>$, and conditional yield are discussed in
two particle correlation framework. Additional corrections are derived to
account for the limited detector acceptance and inefficiency, for cases when
the event mixing technique is used. The validity of our approach is confirmed
with Monte-carlo simulation.


title: Direct observation of 4+ to 2+ gamma transition in 8Be

abstract:
  The low lying states in $^8$Be are believed to have a two-alpha cluster
structure and hence a large intrinsic quadrupole deformation. An earlier
calculation showed a large collective enhancement in gamma transition
probability between the low lying states leading to a 4$^+$ to 2$^+$ gamma
branch of $\sim10^{-7}$ and a resonant radiative cross section of 134 nb for
the $\alpha+\alpha$ entrance channel. We report here the first experimental
evidence for this transition through a $\gamma-\alpha-\alpha$ coincidence
measurement in the reaction $^4$He($\alpha,\alpha \gamma$)$^4$He using a gas
target. The measured cross sections on and off the 4$^+$ resonance are 165
$\pm$ 41 (stat) $\pm$35 (sys) nb and 39 $\pm$ 25 (stat) $\pm$7 (sys) nb,
respectively.


title: Isotopic Scaling and the Symmetry Energy in Spectator Fragmentation

abstract:
  Isotopic effects in the fragmentation of excited target residues following
collisions of $^{12}$C on $^{112,124}$Sn at incident energies of 300 and 600
MeV per nucleon were studied with the INDRA 4$\pi$ detector. The measured yield
ratios for light particles and fragments with atomic number $Z \leq$ 5 obey the
exponential law of isotopic scaling. The deduced scaling parameters decrease
strongly with increasing centrality to values smaller than 50% of those
obtained for the peripheral event groups. Symmetry term coefficients, deduced
from these data within the statistical description of isotopic scaling, are
near $\gamma =$ 25 MeV for peripheral and $\gamma <$ 15 MeV for central
collisions.


title: Neutron Spin Structure Measurements in JLab Hall A

abstract:
  Recent progress from Jefferson Lab has significantly improved our
understanding of the nucleon spin structure in the high-$x$ region. Results
from two experiments in Hall A are presented. The first experiment is a
precision measurement of the neutron spin asymmetry, $A_1^n$, in the high-$x$
(valence quark) region. The results show for the first time that $A_1^n$
becomes positive at large $x$, strongly breaking SU(6) (spin-flavor) symmetry.
The data trend is in good agreement with SU(6)-breaking valence quark models
and with the fits to the previous world data. Combining the $A_1^n$ results
with the world $A_1^p$ data, the up and down quark spins distributions in the
nucleon were extracted. The results showed that for the proton the valence down
quark spin is in the opposite direction from that of the proton, in
disagreement with predictions of leading-order perturbative QCD models, which
neglect quark orbital angular momentum.
  In the second experiment, the $Q^2$ dependence of the moments and sum rules
of the spin structure in the low to intermediate $Q^2$ region were measured,
providing a unique bridge linking the quark-gluon picture of the nucleon and
the coherent hadronic picture.


title:
Centrality Dependence of Charm Production from Single Electrons in Au+Au
  Collisions at sqrt(s_NN) = 200 GeV

abstract:
  The PHENIX experiment has measured mid-rapidity transverse momentum spectra
(0.4 < p_T < 4.0 GeV/c) of single electrons as a function of centrality in
Au+Au collisions at sqrt(s_NN) = 200 GeV. Contributions to the raw spectra from
photon conversions and Dalitz decays of light neutral mesons are measured by
introducing a thin (1.7% X_0) converter into the PHENIX acceptance and are
statistically removed. The subtracted ``non-photonic'' electron spectra are
primarily due to the semi-leptonic decays of hadrons containing heavy quarks
(charm and bottom). For all centralities, charm production is found to scale
with the nuclear overlap function, T_AA. For minimum-bias collisions the charm
cross section per binary collision is N_cc^bar/T_AA = 622 +/- 57 (stat.) +/-
160 (sys.) microbarns.


title: Directed and Elliptic Flow at RHIC

abstract:
  We present the directed flow measurement ($v_1$) from Au+Au collisions at
$\sqrtsNN = 62$ GeV. Over the pseudorapidity range we have studied, which
covers $\eta$ from -1.2 to 1.2 and $2.4 < |\eta| < 4$, the magnitude of $v_1$
for charged particles is found to increase monotonously with pseudorapidity for
all centralities. No ``$v_1$ wiggle'', as predicted by various theoretical
models, is observed at midrapidity. Elliptic flow ($v_2$) from moderate high
$p_t$ particles ($3-6 GeV/c$) at $\sqrtsNN = 200$ GeV is presented as a
function of impact parameter. It is found that models that are based on {\it
jet quenching} alone appear to underpredict $v_2$ at moderate high $p_t$, while
the model that incorporates both, recombination and fragmentation, describes
the data better.


title: Exclusive Photoproduction of the Cascade (Xi) Hyperons

abstract:
  We report on the first measurement of exclusive Xi-(1321) hyperon
photoproduction in gamma p --> K+ K+ Xi- for 3.2 < E(gamma) < 3.9 GeV. The
final state is identified by the missing mass in p(gamma,K+ K+)X measured with
the CLAS detector at Jefferson Laboratory. We have detected a significant
number of the ground-state Xi-(1321)1/2+, and have estimated the total cross
section for its production. We have also observed the first excited state
Xi-(1530)3/2+. Photoproduction provides a copious source of Xi's. We discuss
the possibilities of a search for the recently proposed Xi5-- and Xi5+
pentaquarks.


title: Charm production and energy loss at the LHC with ALICE

abstract:
  The latest results on the ALICE performance for production and in-medium QCD
energy loss measurements of charm particles at the LHC are presented.


title: Direct Photons at RHIC

abstract:
  The PHENIX experiment has measured direct photons in $\sqrt{s_{NN}} = 200$
GeV Au+Au collisions and p+p collisions. The fraction of photons due to direct
production in Au+Au collisions is shown as a function of $p_T$ and centrality.
This measurement is compared with expectation from pQCD calculations. Other
possible sources of direct photons are discussed.


title: Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV

abstract:
  The results from the STAR Collaboration on directed flow (v_1), elliptic flow
(v_2), and the fourth harmonic (v_4) in the anisotropic azimuthal distribution
of particles from Au+Au collisions at sqrtsNN = 200 GeV are summarized and
compared with results from other experiments and theoretical models. Results
for identified particles are presented and fit with a Blast Wave model.
Different anisotropic flow analysis methods are compared and nonflow effects
are extracted from the data. For v_2, scaling with the number of constituent
quarks and parton coalescence is discussed. For v_4, scaling with v_2^2 and
quark coalescence is discussed.


title:
System Size and Centrality Dependence of the Electric Charge
  Correlations in A+A and p+p Collisions at the SPS Energies

abstract:
  The Balance Function analysis method was developed in order to study the long
range correlations in pseudo-rapidity of charged particle. The final results on
p+p, C+C, Si+Si and centrality selected Pb+Pb collisions at $\sqrt{s_{NN}} =
17.2$ GeV and the preliminary data at $\sqrt{s_{NN}} = 8.8$ GeV are presented.
The width of the Balance Function decreases with increasing system size and
centrality of the collisions. This could suggest a delayed hadronization
scenario.


title:
Polarization Transfer in Proton Compton Scattering at High Momentum
  Transfer

abstract:
  Compton scattering from the proton was investigated at s=6.9 (GeV/c)**2 and
\t=-4.0 (GeV/c)**2 via polarization transfer from circularly polarized incident
photons. The longitudinal and transverse components of the recoil proton
polarization were measured. The results are in excellent agreement with a
prediction based on a reaction mechanism in which the photon interacts with a
single quark carrying the spin of the proton and in disagreement with a
prediction of pQCD based on a two-gluon exchange mechanism.


title:
Neutral Pions with Large Transverse Momentum in d+Au and Au+Au
  Collisions

abstract:
  Measurements of transverse-momentum p_T spectra of neutral pions in Au+Au and
d+Au collisions at sqrt{s_NN}=200 GeV and 62.4 GeV by the PHENIX experiment at
RHIC in comparison to p+p reference spectra at the same sqrt{s_NN} are
presented. In central Au+Au collisions at sqrt{s_NN}=200 GeV a factor 4-5
suppression for neutral pions and charged hadrons with p_T > 5 GeV/c is found
relative to the p+p reference scaled by the nuclear overlap function < T_AB >.
In contrast, such a suppression of high-p_T particles is absent in d+Au
collisions independent of the centrality of the collision. To study the
sqrt{s_NN} dependence of the suppression Au+Au collisions at sqrt{s_NN}=200 GeV
and 62.4 GeV are compared.


title:
Formation of dense partonic matter in relativistic nucleus-nucleus
  collisions at RHIC: Experimental evaluation by the PHENIX collaboration

abstract:
  Extensive experimental data from high-energy nucleus-nucleus collisions were
recorded using the PHENIX detector at the Relativistic Heavy Ion Collider
(RHIC). The comprehensive set of measurements from the first three years of
RHIC operation includes charged particle multiplicities, transverse energy,
yield ratios and spectra of identified hadrons in a wide range of transverse
momenta (p_T), elliptic flow, two-particle correlations, non-statistical
fluctuations, and suppression of particle production at high p_T. The results
are examined with an emphasis on implications for the formation of a new state
of dense matter. We find that the state of matter created at RHIC cannot be
described in terms of ordinary color neutral hadrons.


title: Open charm production at RHIC

abstract:
  In this report, we present the measurements of open charm production at
mid-rapidity in p+p, d+Au, and Au+Au collisions at RHIC energies. The
techniques of direct reconstruction of open charm via its hadronic decay and
indirect measurements through its semileptonic decay are discussed. The beam
energy dependence of total charm cross section, electron \pt spectra, and their
comparisons to theoretical calculations, including NLO pQCD, are presented. The
electron spectra in p+p, d+Au, and Au+Au collisions at \srt=200 GeV show
significant variation. The open charm absolute cross section at midrapidity and
its centrality dependence are compared to those of inclusive hadrons integrated
over $p_{T}>1.5$ GeV/c.


title:
Experimental search for evidence of the three-nucleon force and a new
  analysis method

abstract:
  A research program with the aim of investigating the spin dependence of the
three-nucleon continuum in pd collisions at intermediate energies was carried
out at IUCF using the Polarized INternal Target EXperiments (PINTEX) facility.
In the elastic scattering experiment at 135 and 200 MeV proton beam energies a
total of 15 independent spin observables were obtained. The breakup experiment
was done with a vector and tensor polarized deuteron beam of 270 MeV and an
internal polarized hydrogen gas target. We developed a novel technique for the
analysis of the breakup observables, the sampling method. The new approach
takes into account acceptance and non-uniformities of detection efficiencies
and is suitable for any kinematically complete experiment with three particles
in the final state.


title: Open heavy flavor measurements with the PHENIX experiment at RHIC

abstract:
  The PHENIX experiment has measured single electron spectra at RHIC in
proton-proton (p-p), deuteron-gold (d-Au), and gold-gold (Au-Au) collisions at
an available energy per nucleon-nucleon pair of sqrt{s_NN} = 200 GeV.
Contributions from photonic sources, i.e. Dalitz decays of light mesons and
photon conversions, are subtracted from the inclusive spectra. The remaining
non-photonic single electron spectra are dominated by semileptonic decays of
particles carrying heavy flavor. Implications of these systematic measurements
for heavy flavor production in cold and hot nuclear systems are discussed.


title: Elliptic Flow in Au+Au Collisions at RHIC

abstract:
  Elliptic flow is an interesting probe of the dynamical evolution of the dense
system formed in the ultrarelativistic heavy ion collisions at the Relativistic
Heavy Ion Collider (RHIC). The elliptic flow dependences on transverse
momentum, centrality, and pseudorapidity were measured using data collected by
the PHOBOS detector, which offers a unique opportunity to study the azimuthal
anisotropies of charged particles over a wide range of pseudorapidity. These
measurements are presented, together with an overview of the analysis methods
and a discussion of the results.


title: Dihadron correlations at high pT

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 from the Relativistic Heavy-Ion Collider (RHIC) on characterization of
jet production via dihadron correlations at high transverse momentum are
reviewed. Expectations from the dihadron measurements for the lower energy
\sqrtsNN=62.4 GeV RHIC run are discussed.


title: Precision Rosenbluth measurement of the proton elastic form factors

abstract:
  We report the results of a new Rosenbluth measurement of the proton form
factors at Q^2 values of 2.64, 3.20 and 4.10 GeV^2. Cross sections were
determined by detecting the recoiling proton in contrast to previous
measurements in which the scattered electron was detected. At each Q^2,
relative cross sections were determined to better than 1%. The measurement
focussed on the extraction of G_E/G_M which was determined to 4-8% and found to
approximate form factor scaling, i.e. \mu_p G_E \approx G_M. These results are
consistent with and much more precise than previous Rosenbluth extractions.
However, they are inconsistent with recent polarization transfer measurements
of comparable precision, implying a systematic difference between the two
techniques.


title: Recoil alignment in muon capture on nitrogen-14

abstract:
  We report a measurement of the longitudinal alignment $A_L$ of the recoil
nucleus in the $\mu^- + ^{14}$N$(1^+, 0)$ $\to$ $\nu_{\mu} + ^{14}$C$(2^+,
7012)$ transition. The experiment was performed on the M9B beamline at the
TRIUMF cyclotron via the measurement of the Doppler lineshape of the subsequent
$^{14}$C$(2^+, 7012)$ $\to$ $^{14}$C$(0^+, 0)$ gamma-rays. We compare our
result $A_L = 0.60 \pm 0.11$ to various model calculations, and discuss the
sensitivity to the induced pseudoscalar coupling, second-forbidden effects and
$2 \hbar \omega$ wavefunction admixtures.


title:
Production of phi mesons at mid-rapidity in sqrt(s_NN) = 200 GeV Au+Au
  collisions at RHIC

abstract:
  We present the first results of meson production in the K^+K^- decay channel
from Au+Au collisions at sqrt(s_NN) = 200 GeV as measured at mid-rapidity by
the PHENIX detector at RHIC. Precision resonance centroid and width values are
extracted as a function of collision centrality. No significant variation from
the PDG accepted values is observed. The transverse mass spectra are fitted
with a linear exponential function for which the derived inverse slope
parameter is seen to be constant as a function of centrality. These data are
also fitted by a hydrodynamic model with the result that the freeze-out
temperature and the expansion velocity values are consistent with the values
previously derived from fitting single hadron inclusive data. As a function of
transverse momentum the collisions scaled peripheral.to.central yield ratio RCP
for the is comparable to that of pions rather than that of protons. This result
lends support to theoretical models which distinguish between baryons and
mesons instead of particle mass for explaining the anomalous proton yield.


title:
Measurement of the Transverse Beam Spin Asymmetry in Elastic Electron
  Proton Scattering and the Inelastic Contribution to the Imaginary Part of the
  Two-Photon Exchange Amplitude

abstract:
  We report on a measurement of the asymmetry in the scattering of transversely
polarized electrons off unpolarized protons, A$_\perp$, at two Q$^2$ values of
\qsquaredaveragedlow (GeV/c)$^2$ and \qsquaredaveragedhighII (GeV/c)$^2$ and a
scattering angle of $30^\circ < \theta_e < 40^\circ$. The measured transverse
asymmetries are A$_{\perp}$(Q$^2$ = \qsquaredaveragedlow (GeV/c)$^2$) =
(\experimentalasymmetry alulowcorr $\pm$ \statisticalerrorlow$_{\rm stat}$
$\pm$ \combinedsyspolerrorlowalucor$_{\rm sys}$) $\times$ 10$^{-6}$ and
A$_{\perp}$(Q$^2$ = \qsquaredaveragedhighII (GeV/c)$^2$) = (\experimentalasymme
tryaluhighcorr $\pm$ \statisticalerrorhigh$_{\rm stat}$ $\pm$
\combinedsyspolerrorhighalucor$_{\rm sys}$) $\times$ 10$^{-6}$. The first
errors denotes the statistical error and the second the systematic
uncertainties. A$_\perp$ arises from the imaginary part of the two-photon
exchange amplitude and is zero in the one-photon exchange approximation. From
comparison with theoretical estimates of A$_\perp$ we conclude that
$\pi$N-intermediate states give a substantial contribution to the imaginary
part of the two-photon amplitude. The contribution from the ground state proton
to the imaginary part of the two-photon exchange can be neglected. There is no
obvious reason why this should be different for the real part of the two-photon
amplitude, which enters into the radiative corrections for the Rosenbluth
separation measurements of the electric form factor of the proton.


title:
Blast-wave analysis of strange particle $m_T$ spectra in Pb-Pb
  collisions at the SPS

abstract:
  The transverse mass spectra of high statistics, high purity samples of K0s,
Lambda, Xi and Omega particles produced in Pb-Pb collisions at SPS energy 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.
Results at 40 A GeV/c are presented here for the first time.


title:
Two Regions of a Possible Drastic Change in the Structure of the Excited
  States of Any Nuclei

abstract:
  From a comparison of the absolute intensities of individual two-step cascades
with known intensities of their primary and secondary transitions following
thermal neutron capture the cascade and total population abilities of up to
\~100 levels of each of the nuclei: 40K, 60Co, 74Ge, 114Cd, 118Sn, 124Te,
  137,138Ba, 150Sm, 156,158Gd, 165Dy, 168Er, 175Yb, 181Hf, 183,184,185,187W,
196Pt and 200Hg have been determined. These experimental data as well as the
intensities of two-step cascades to the low-lying levels of these very nuclei
can be restored within an accuracy of experiment if only the level densities
with a clearly expressed "step-like" structure are used and a considerable
local increase of the radiative strength functions of secondary transitions to
the levels situated close to the breakpoints on the energy dependence curve of
level densities and their quite significant decrease to the low-lying levels of
the nucleus are taken into account.