title:
Heavy Residue Isoscaling as a Probe of the Symmetry Energy of Hot
  Fragments

abstract:
  The isoscaling properties of isotopically resolved projectile residues from
peripheral collisions of 86Kr (25 MeV/nucleon), 64Ni (25 MeV/nucleon) and 136Xe
(20 MeV/nucleon) beams on various target pairs are employed to probe the
symmetry energy coefficient of the nuclear binding energy. The present study
focuses on heavy projectile fragments produced in peripheral and semiperipheral
collisions near the onset of multifragment emission E*/A = 2-3 MeV). For these
fragments, the measured average velocities are used to extract excitation
energies. The excitation energies, in turn, are used to estimate the
temperatures of the fragmenting quasiprojectiles in the framework the Fermi gas
model. The isoscaling analysis of the fragment yields provided the isoscaling
parameters "alpha" which, in combination with temperatures and isospin
asymmetries provided the symmetry energy coefficient of the nuclear binding
energy of the hot fragmenting quasiprojectiles. The extracted values of the
symmetry energy coefficient at this excitation energy range (2-3 MeV/nucleon)
are lower than the typical liquid-drop model value ~25 MeV corresponding to
ground-state nuclei and show a monotonic decrease with increasing excitation
energy. This result is of importance in the formation of hot nuclei in
heavy-ion reactions and in hot stellar environments such as supernova.


title:
Consensus Report of a Workshop on "Matrix elements for Neutrinoless
  Double Beta Decay"

abstract:
  This is the consensus of a Workshop on "Matrix elements for Neutrinoless
Double Beta Decay" held at the IPPP Durham (UK). The aim of this workshop has
been to define a well planned, coherent strategy to reduce the errors on
nuclear matrix element calculations for double beta decay to a level of 30% by
performing the necessary measurements with currently existing and planned
facilities. These measurements should provide reliable input for the
theoretical calculations. The outcome of the workshop has been organised in
working packages. The consensus might act as a starting point for an
international coherent effort to achieve this goal.


title: Collection of CERES Results

abstract: Plenary talk in Quark Matter 2005, Budapest.


title: Optical Calibration For Jefferson Lab HKS Spectrometer

abstract:
  In order to accept very forward angle scattering particles, Jefferson Lab HKS
experiment uses an on-target zero degree dipole magnet. The usual spectrometer
optics calibration procedure has to be modified due to this on-target field.
This paper describes a new method to calibrate HKS spectrometer system. The
simulation of the calibration procedure shows the required resolution can be
achieved from initially inaccurate optical description.


title:
The Evolution of Correlation Functions from Low to High Transverse
  Momentum in PHENIX: From HBT to Jets

abstract:
  The PHENIX Experiment at the Relativistic Heavy Ion Collider has performed a
survey of momentum correlations ranging from 200 MeV/c to 7 GeV in
$\sqrt{s_{NN}}$ = 200 GeV p+p, d+Au, Au+Au, and $\sqrt{s_{NN}}$ = 62 GeV Au+Au
collisions. The correlations are measured separately for like-sign and
unlike-sign pairs. Comparisons of the properties of the near-side peak
amplitude and width as a function of centrality and transverse momentum for
each collision species are presented and discussed.


title: High pT in nuclear collisions at SPS, RHIC, and LHC

abstract:
  We review recent progress in the study of medium-induced modification of jet
fragmentation in high energy nuclear collisions at the SPS and RHIC and present
an outlook on jet physics at the LHC.


title: The Laser Calibration System of the ALICE Time Projection Chamber

abstract:
  A Large Ion Collider Experiment (ALICE) is the only experiment at the Large
Hadron Collider (LHC) dedicated to the study of heavy ion collisions. The Time
Projection Chamber (TPC) is the main tracking detector covering the pseudo
rapidity range $|\eta|< 0.9$. It is designed for a maximum multiplicity \dNdy =
8000. The aim of the laser system is to simulate ionizing tracks at predifined
positions throughout the drift volume in order to monitor the TPC response to a
known source. In particular, the alignment of the read-out chambers will be
performed, and variations of the drift velocity due to drift field
imperfections can be measured and used as calibration data in the physics data
analysis. In this paper we present the design of the pulsed UV laser and
optical system, together with the control and monitoring systems.


title:
Beam Test Performance and Simulation of Prototypes for the ALICE Silicon
  Pixel Detector

abstract:
  The silicon pixel detector (SPD) of the ALICE experiment in preparation at
the Large Hadron Collider (LHC) at CERN is designed to provide the precise
vertex reconstruction needed for measuring heavy flavor production in heavy ion
collisions at very high energies and high multiplicity. The SPD forms the
innermost part of the Inner Tracking System (ITS) which also includes silicon
drift and silicon strip detectors. Single assembly prototypes of the ALICE SPD
have been tested at the CERN SPS using high energy proton/pion beams in 2002
and 2003. We report on the experimental determination of the spatial precision.
We also report on the first combined beam test with prototypes of the other ITS
silicon detector technologies at the CERN SPS in November 2004. The issue of
SPD simulation is briefly discussed.


title:
Some problems in determining level density and radiative strength
  functions in light and near-magic nuclei

abstract:
  The values of some functional dependencies of level density and radiative
strength functions that reproduce the experimental intensities of the two-step
gamma-cascades to the ground and first excited states of 28Al have been
determined. It was shown that the assumption about independence of the dipole
cascade transitions radiative strength functions on energy of decaying level
leads to rather essential error in observation of both level density and
radiative strength functions.


title: Parameters of the 125Te compound state cascade gamma-decay

abstract:
  Reliable information on level density and radiative strength functions for
the excitation energy region with density of excited states more than 100
levels per 1 MeV and higher can be obtained now only by its model-free
extraction from intensities of two-step cascades proceeding between compound
states and few low-lying levels. Full model-free determination of these
parameters in any method is possible only if one can extract from additional
experimental information about general trend in dependence of ratio of strength
functions of emitted reaction products of a given type on excitation energy of
the nucleus under study. Analysis of the available experimental data for 125Te
shows that the peculiarities observed earlier in other nuclei are also inherent
to this nucleus.


title:
Search for a mixed phase of strongly interacting matter at the JINR
  Nuclotron

abstract:
  A physical program is formulated for new facilities opening in Dubna for
acceleration of heavy ions with an energy up to 5 AGeV.


title:
Evidence for in-medium modification of the $\phi$ meson at normal
  nuclear density

abstract:
  Invariant mass spectra of e+e- pairs have been measured in 12 GeV p+A
reactions to detect possible in-medium modification of vector mesons. Copper
and carbon targets are used to study the nuclear-size dependence of e+e-
invariant mass distributions. A significant excess on the low-mass side of the
phi meson peak is observed in the low beta gamma (=beta/sqrt(1-beta^2)) region
of phi mesons (beta gamma < 1.25) with copper targets. However, in the high
beta gamma region (beta gamma > 1.25), spectral shapes of phi mesons are well
described by the Breit-Wigner shape when experimental effects are considered.
Thus, in addition to our earlier publication on rho / omega modification, this
study has experimentally verified vector meson mass modification at normal
nuclear density.


title:
First measurement of the strange particles Rcp nuclear modification
  factors in heavy-ion collisions at the SPS

abstract:
  The NA57 experiment has measured the pt distributions of K0s, Lambda, and
antiLambda particles in fixed-target Pb-Pb interactions at sqrt(s_{NN})=17.3
GeV as a function of the collision centrality. In this paper we study the
central-to-peripheral nuclear modification factors and compare them to other
measurements and to theoretical predictions.


title:
Experimental constraints on non-linearities induced by two-photon
  effects in elastic and inelastic Rosenbluth separations

abstract:
  The effects of two-photon exchange corrections, suggested to explain the
difference between measurements of the proton elastic electromagnetic form
factors using the polarization transfer and Rosenbluth techniques, have been
studied in elastic and inelastic scattering data. Such corrections could
introduce epsilon-dependent non-linearities in inelastic Rosenbluth
separations, where epsilon is the virtual photon polarization parameter. It is
concluded that such non-linear effects are consistent with zero for elastic,
resonance, and deep-inelastic scattering for all Q^2 and W^2 values measured.


title: Rapidity distributions of strange particles in Pb-Pb at 158 A GeV/c

abstract:
  The production at central rapidity of K0s, Lambda, Xi and Omega particles in
Pb-Pb collisions at 158 A GeV/c has been measured by the NA57 experiment over a
centrality range corresponding to the most central 53% of the inelastic Pb-Pb
cross section. We present the rapidity distribution of each particle in the
central rapidity unit. The distributions are analysed based on hydrodynamical
models of the collisions.


title:
Reduced neutron spectroscopic factors when using potential geometries
  constrained by Hartree-Fock calculations

abstract:
  We carry out a systematic analysis of angular distribution measurements for
selected ground-state to ground-state (d,p) and (p,d) neutron transfer
reactions, including the calcium isotopes. We propose a consistent three-body
model reaction methodology in which we constrain the transferred-neutron bound
state and nucleon-target optical potential geometries using modern Hartree-Fock
calculations. Our deduced neutron spectroscopic factors are found to be
suppressed by ~30% relative to independent-particle shell-model values, from
40Ca through 49Ca. The other nuclei studied, ranging from B to Ti, show similar
average suppressions with respect to large-basis shell-model expectations. Our
results are consistent with deduced spectroscopic strengths for neutrons and
protons from intermediate energy nucleon knockout reactions, and for protons
from (e,e'p) reactions, on well-bound nuclei. PACS: 24.50.+g, 24.10.Eq,
25.40.-h, 25.45.-z


title: Neutron Spectroscopic Factors from Transfer Reactions

abstract:
  The present paper examines past measurements of the angular distributions for
(d,p) and (p,d) reactions on targets with Z=3-24 leading to the ground states.
The procedure is prescribed for extracting a conventional set of spectroscopic
factors. Most of these spectroscopic factors agree well with large-basis shell
model predictions. In all, the ground state neutron spectroscopic factors for
80 nuclei have been obtained. The consistency of the method is evaluated by
comparing spectroscopic factors obtained separately in (p,d) and (d,p)
reactions. The values correlate with Endt's compilation when available, but the
current method is more general and the spectroscopic factor values obtained are
more consistent with each other.


title:
Measurements of the neutron electric to magnetic form factor ratio
  GEn/GMn via the ^2H(\vec{e},e'\vec{n})^1H reaction to Q^2 = 1.45 (GeV/c)^2

abstract:
  We report values for the neutron electric to magnetic form factor ratio,
GEn/GMn, deduced from measurements of the neutron's recoil polarization in the
quasielastic 2H(\vec{e},e'\vec{n})1H reaction, at three Q^2 values of 0.45,
1.13, and 1.45 (GeV/c)^2. The data at Q^2 = 1.13 and 1.45 (GeV/c)^2 are the
first direct experimental measurements of GEn employing polarization degrees of
freedom in the Q^2 > 1 (GeV/c)^2 region and stand as the most precise
determinations of GEn for all values of Q^2.


title:
Multiplicity and Pseudorapidity Distributions of Charged Particles and
  Photons at Forward Pseudorapidity in Au + Au Collisions at sqrt{s_NN} = 62.4
  GeV

abstract:
  We present the centrality dependent measurement of multiplicity and
pseudorapidity distributions of charged particles and photons in Au + Au
collisions at sqrt{s_NN} = 62.4 GeV. The charged particles and photons are
measured in the pseudorapidity region 2.9 < eta < 3.9 and 2.3 < eta < 3.7,
respectively. We have studied the scaling of particle production with the
number of participating nucleons and the number of binary collisions. The
photon and charged particle production in the measured pseudorapidity range has
been shown to be consistent with energy independent limiting fragmentation
behavior. The photons are observed to follow a centrality independent limiting
fragmentation behavior while for the charged particles it is centrality
dependent. We have carried out a comparative study of the pseudorapidity
distributions of positively charged hadrons, negatively charged hadrons,
photons, pions, net protons in nucleus--nucleus collisions and pseudorapidity
distributions from p+p collisions. From these comparisons we conclude that
baryons in the inclusive charged particle distribution are responsible for the
observed centrality dependence of limiting fragmentation. The mesons are found
to follow an energy independent behavior of limiting fragmentation while the
behavior of baryons seems to be energy dependent.


title: Charge independence studied in $NN\to d\pi$ reactions

abstract:
  We review to what extent charge independence breaking (\emph{CIB}) in isospin
related reactions of the type $NN\to d\pi$ can or could be seen in existing
data. In doing this we present fits to global and threshold cross sections
including most recent data. Applying these we point out the probable
impossibility to make model independent predictions even based solely on the
different threshold energies and the well known $pp\to d\pi^+$. A possible
discrepancy is seen between the $np\to d\pi^0$ and $pp\to d\pi^+$ data, which
may require invoking explicitly isospin symmetry breaking interactions.


title: Spin Physics from COSY to FAIR

abstract:
  It is the aim of the ANKE-COSY spin collaboration to carry out a well
directed programme of internationally competitive experiments involving
polarised beams and targets, using the outstanding facilities available at the
storage ring. These activities, at the same time, are good preparation for our
participation in the PAX@FAIR project.


title:
Identification of exotic jet topologies via three particle correlations
  in PHENIX

abstract:
  Modifications of jet properties resulting from the coupling of jets to the
strongly interacting matter produced in RHIC collisions are of great current
interest. In recent work, the PHENIX collaboration has applied a novel
technique to the analysis of two particle azimuthal correlations which
extinguishes the harmonic part of the underlying event revealing the true jet
shape. Recent extensions of the method to three particle correlations allow for
a more revealing study of jet topologies in Au+Au collisions at
($\sqrt{s_{_{\rm NN}}}$=200 GeV).


title:
High pT gamma-hadron and pi0-hadron correlations in sqrt(sNN)=200GeV
  Au+Au collisions in PHENIX

abstract:
  This poster presents the PHENIX results on high-p_T gamma-hadron and
pi0-hadron correlations and shows the modification of away side jet shape by
the medium. By comparing their jet shapes and yields, we see some evidence of
the direct gamma contribution to correlation functions.


title: Neutron Transversity at Jefferson Lab

abstract:
  Nucleon transversity and single transverse spin asymmetries have been the
recent focus of large efforts by both theorists and experimentalists. On-going
and planned experiments from HERMES, COMPASS and RHIC are mostly on the proton
or the deuteron. Presented here is a planned measurement of the neutron
transversity and single target spin asymmetries at Jefferson Lab in Hall A
using a transversely polarized $^3$He target. Also presented are the results
and plans of other neutron transverse spin experiments at Jefferson Lab.
Finally, the factorization for semi-inclusive DIS studies at Jefferson Lab is
discussed.


title:
Transient and quasi-stationary dissipative effects in the fission flux
  across the barrier in 1 A GeV 238U on deuterium reactions

abstract:
  Isotopic cross sections of all projectile residues with Z above 23 produced
in collisions induced by 238U at 1 A GeV on deuterium have been measured. The
isotopic distributions reflect the role of evaporation and fission in the
formation process of these nuclei. The comparison of the measured cross
sections with Monte-Carlo de-excitation codes including an analytical
description of the dynamics of fission shows the sensitivity of the data to
nuclear dissipation. Moreover, the large excitation-energy range covered in
this experiment together with the high accuracy of the measured cross sections
allowed to clearly separate and quantify the role of transient and
quasi-stationary dissipative effects in the fission-decay width.


title: Fluctuation Results from PHENIX

abstract:
  The PHENIX Experiment at the Relativistic Heavy Ion Collider has made
measurements of event-by-event fluctuations in the net charge, the mean
transverse momentum, and the charged particle multiplicity as a function of
collision energy, centrality, and transverse momentum in heavy ion collisions.
The results of these measurements will be reviewed and discussed.


title: $\eta$ Meson Physics at Gem

abstract:
  Some experimental studies of $\eta$ production and $\eta$ interactions
performed or presently under way by the GEM collaboration at COSY J\"{u}lich
are reviewed.


title: Pion Interferemetry from p+p to Au+Au in STAR

abstract:
  The geometric substructure of the particle-emitting source has been
characterized via two-particle interferometry by the STAR collaboration for all
energies and colliding systems at RHIC. We present systematic studies of
charged pion interferometry. The collective nature of the source is revealed
through the $m_T$ dependence of HBT radii for all particle types. Preliminary
results suggest a scaling in the pion HBT radii with overall system size, as
central Au+Au collisions are compared to peripheral collisions as well as with
Cu+Cu and even with d+Au and p+p collisions, naively suggesting comparable flow
strength in all systems. To probe this issue in greater detail,
multidimensional correlation functions are studied using a spherical
decomposition method. This allows clear identification of source anisotropy
and, for the light systems, the presence of significant long-range
non-femtoscopic correlations.


title:
Energy and System Size Dependence of Charged Hadron Transverse Momentum
  Spectra from Cu+Cu and Au+Au Collisions at sqrt(s_(NN)) = 62.4 and 200 GeV

abstract:
  The PHOBOS collaboration has measured transverse momentum distributions of
charged hadrons produced in Cu+Cu collisions at sqrt(s_(NN)) = 200 and 62.4
GeV. The nuclear modification factor R_(AA)^(Npart) is calculated relative to
p+p data at both collision energies as a function of collision centrality. For
the same number of participating nucleons, R_(AA)^(Npart) is essentially the
same in both systems over the full range of p_(T) that is measured. In
addition, we observe that within experimental uncertainties, the ratio of 200
GeV to 62.4 GeV Cu+Cu yields has only a moderate centrality dependence and is
consistent with the value previously measured in Au+Au collisions for a broad
range of p_(T).


title: Bulk hadron production at high rapidities

abstract:
  Recent experimental observations on the `bulk' features of particle
production at high (pseudo)rapidities will be reviewed. This kinematic region
is of interest mostly because of its relevance to the theoretical description
of initial state effects of nuclei at ultra-relativistic energies. Measurements
of the charged hadron multiplicity density as well as the pseudorapidity
dependence of the elliptic and directed flow exhibit a remarkable scaling
property as a function of collision energy. This scaling seems to hold for
pions and even photons and J/Psi-s, but is violated for protons. The special
role of baryons will be discussed using selected results on nuclear
transparency and baryon stopping.


title: New Results on Nucleon Spin Structure

abstract:
  Recent precision spin structure data from Jefferson Lab have significantly
advanced our knowledge of nucleon structure in the valence quark (high-$x$)
region and improved our understanding of higher-twist effects, spin sum rules
and quark-hadron duality. First, results of a precision measurement of the
neutron spin asymmetry, $A_1^n$, in the high-$x$ region are discussed. The new
data shows that $A_1^n$ becomes positive at high $x$. They provide crucial
input for the global fits to world data to extract polarized parton
distribution functions. The up and down quark spin distributions in the nucleon
were extracted. The results for $\Delta d/d$ disagree with the leading-order
pQCD prediction assuming hadron helicity conservation. Then, results of a
precision measurement of the $g_2^n$ structure function to study higher-twist
effects are presented. The data show a clear deviation from the lead-twist
contribution. The second moment of the spin structure functions and the twist-3
matrix element $d_2^n$ results were extracted at a high $Q2$ of 5 GeV$^2$.
Results for $d_2^n$ at low-to-intermediate $Q2$ from 0.1 to 0.9 GeV$^2$ were
also extracted from the JLab data. In the same $Q2$ range, the $Q2$ dependence
of the moments of the nucleon spin structure functions was measured, providing
a unique bridge linking the quark-gluon picture of the nucleon and the coherent
hadronic picture. Sum rules and generalized forward spin polarizabilities were
extracted. Finally, preliminary results were presented on the resonance spin
structure functions in the $Q2$ range from 1 to 4 GeV$^2$ to study the
quark-hadron duality.


title:
PHENIX Measurement of Particle Yields at High pT with Respect toReaction
  Plane in Au+Au Collisions at sqrt(s) = 200 GeV

abstract:
  The PHENIX Run 4 Au+Au dataset provides a powerful opportunity for exploring
the angular anisotropy of identified particle yields at high pT. Complementing
traditional v2 measurements, we present pi0 yields as a function of angle with
reaction plane, up to pT 10 GeV/c. The centrality dependence of the angular
anisotropy allows us to probe the density and path-length dependence of the
energy loss of hard-scattered partons. We will discuss various mechanisms for
particle production in this high pT region.


title:
New $^{32}$Cl(p,$\gamma$)$^{33}$Ar reaction rate for astrophysical
  rp-process calculations

abstract:
  The $^{32}$Cl(p,$\gamma$)$^{33}$Ar reaction rate is of potential importance
in the rp-process powering type I X-ray bursts. Recently Clement et al.
\cite{CBB04} presented new data on excitation energies for low lying proton
unbound states in $^{33}$Ar obtained with a new method developed at the
National Superconducting Cyclotron Laboratory. We use their data, together with
a direct capture model and a USD shell model calculation to derive a new
reaction rate for use in astrophysical model calculations. In particular, we
take into account capture on the first excited state in $^{32}$Cl, and also
present a realistic estimate of the remaining uncertainties. We find that the
$^{32}$Cl(p,$\gamma$)$^{33}$Ar reaction rate is dominated entirely by capture
on the first excited state in $^{32}$Cl over the whole temperature range
relevant in X-ray bursts. In the temperature range from 0.2 to 1 GK the rate is
up to a factor of 70 larger than the previously recommended rate based on shell
model calculations only. The uncertainty is now reduced from up to a factor of
1000 to a factor of 3 at 0.3-0.7 GK and a factor of 6 at 1.5 GK.


title:
Measurement of direct photons in s(NN)**1/2 = 200 GeV p+p and Au+Au
  collisions with the PHENIX Experiment at RHIC

abstract:
  The measurement of direct photons in s(NN)**1/2 = 200 GeV p+p and Au+Au
collisions is presented. The signal is compared to NLO pQCD calculations,
which, in case of Au+Au, are scaled with the number of underlying
nucleon-nucleon collisions. The agreement of the calculation with the data in
both cases confirms the scaling of hard processes with the number of
nucleon-nucleon collisions and supports the explanation of the earlier-observed
pion suppression as a final-state effect.


title: Direct photons in 200 GeV p+p, d+Au, and Au+Au from PHENIX

abstract:
  Direct photons were measured with the PHENIX experiment in p+p, d+Au, and
Au+Au at sqrt(s_NN) = 200 GeV. To tackle the p_T region below 5 GeV/c, direct
photons were measured through their internal conversion into e^+e^- in Au+Au
collisions.


title:
Two-particle azimuthal correlations at high transverse momentum in Pb-Au
  at 158 AGeV/c

abstract:
  The study of two-particle azimuthal correlations at high transverse momentum
has become an important tool to investigate the interaction of hard partons
with the medium formed in high-energy nucleus-nucleus collisions. At SPS
energies, pioneering studies by the CERES collaboration indicated a significant
modification of the away-side structure in central collisions. Here we present
new results emerging from the analysis of the year 2000 data set recorded with
the CERES Time-Projection Chamber, which provides excellent tracking efficiency
and significantly improved momentum determination.


title: Highlights from the PHENIX Experiment - Part 2

abstract:
  Recent results from the PHENIX experiment at RHIC are presented. In this
second part of the overview we discuss new results on direct photon production
at low p_T in Au+Au collisions and a systematic study of J/psi production in
various systems. Finally we summarize new results on the modification of jets
in the medium.


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

abstract:
  We report on measurements of directed flow as a function of pseudorapidity in
Au+Au collisions at energies of $\sqrt{s_{_{NN}}} =$ 19.6, 62.4, 130 and 200
GeV as measured by the PHOBOS detector at the Relativistic Heavy Ion Collider
(RHIC). These results are particularly valuable because of the extensive,
continuous pseudorapidity coverage of the PHOBOS detector. There is no
significant indication of structure near midrapidity and the data surprisingly
exhibit extended longitudinal scaling similar to that seen for elliptic flow
and charged particle pseudorapidity density.


title:
Probing Cold and Hot, Dense Nuclear Media Via High-p$_{T}$ Jets with
  Di-hadron and gamma-hadron Correlations at PHENIX

abstract:
  With the recent high statistics Au+Au and Cu+Cu runs at RHIC, it has become
possible to systematically study jet properties in several different colliding
systems with potentially different final state interactions. In this talk we
present results from high-pT di-hadron and gamma-hadron correlations from p+p,
d+Au, Cu+Cu, and Au+Au collisions where jets in vacuum, cold nuclear matter,
and hot, dense nuclear matter are studied.


title: Strangelet Search in AuAu Collisions at 200 GeV

abstract:
  We have searched for strangelets in a triggered sample of 61 million central
(top 4%) Au+Au collisions at $\sNN = 200 $GeV near beam rapidities at the STAR
detector. We have sensitivity to metastable strangelets with lifetimes of order
$\geq 0.1 ns$, in contrast to limits over ten times longer in AGS studies and
longer still at the SPS. Upper limits of a few 10^{-6} to 10^{-7} per central
Au+Au collision are set for strangelets with mass ${}^{>}_{\sim}30$ GeV/c^{2}.


title: Return of the Volcano: PHENIX Azimuthal Correlations 62.4 GeV Au+Au

abstract:
  As in previous analyses at sqrt(s_NN) 200 GeV, correlations in azimuthal
angles between inclusive charge particles at intermediate transverse momentum
(p_T = 1.0-4.0) GeV/c are studied at sqrt(s_NN) 62.4 GeV. The jet correlations
reveal similar modification as in 200 GeV. Specifically large modification,
including the "volcano" or "cone" structure, persists in the awayside
correlation.


title:
Cosmogenic activation of Germanium and its reduction for low background
  experiments

abstract:
  Production of $^{60}$Co and $^{68}$Ge from stable isotopes of Germanium by
nuclear active component of cosmic rays is a principal background source for a
new generation of $^{76}$Ge double beta decay experiments like GERDA and
Majorana. The biggest amount of cosmogenic activity is expected to be produced
during transportation of either enriched material or already grown crystal.
  In this letter properties and feasibility of a movable iron shield are
discussed. Activation reduction factor of about 10 is predicted by simulations
with SHIELD code for a simple cylindrical configuration. It is sufficient for
GERDA Phase II background requirements. Possibility of further increase of
reduction factor and physical limitations are considered. Importance of
activation reduction during Germanium purification and detector manufacturing
is emphasized.


title:
First direct measurement of the total cross section of
  12C(alpha,gamma)16O

abstract:
  The total cross section of 12C(alpha,gamma)16O was measured for the first
time by a direct and ungated detection of the 16O recoils. This measurement in
inverse kinematics using the recoil mass separator ERNA in combination with a
windowless He gas target allowed to collect data with high precision in the
energy range E=1.9 to 4.9 MeV. The data represent new information for the
determination of the astrophysical S(E) factor.


title: Mass measurements and superallowed beta decay

abstract:
  A recent Penning-trap measurement of the masses of 46V and 46Ti leads to a
Qec value that disagrees significantly with the previously accepted value, and
destroys overall consistency among the nine most precisely characterized T=1
superallowed beta emitters. This raises the possibility of a systematic
discrepancy between Penning-trap measurements and the reaction-based
measurements upon which the Qec values depended in the past. We carefully
re-analyze (n,gamma) and (p,gamma) reaction measurements in the 24 \leq A \leq
28 mass region, and compare the results to very precise Penning-trap
measurements of the stable nuclei 24Mg, 26Mg and 28Si. We thus determine upper
limits to possible systematic effects in the reaction results, and go on to
establish limits for the mass of radioactive 26Al, to which future on-line
Penning-trap measurements can be compared. We stress the urgency of identifying
or ruling-out possible systematic effects.


title: Determination of Deuteron Beam Polarizations at COSY

abstract:
  The vector and tensor polarizations of a deuteron beam have been measured
using elastic deuteron-carbon scattering at 75.6 MeV and deuteron-proton
scattering at 270 MeV. After acceleration to 1170 MeV inside the COSY ring, the
polarizations of the deuterons were checked by studying a variety of nuclear
reactions using a cluster target at the ANKE magnet spectrometer placed at an
internal target position of the storage ring. All these measurements were
consistent with the absence of depolarization during acceleration and provide a
number of secondary standards that can be used in subsequent experiments at the
facility.


title: Non-Gaussian Effects in Identical Pion Correlation Function at STAR

abstract:
  Preliminary femtoscopic results on identical pions from high statistics data
set of Au+Au collisions at sqrt{s_NN}=200 GeV taken during the fourth RHIC run
are presented. The measured three-dimensional correlation function is studied
at low relative momenta using the Gaussian parametrization and the Levy stable
parametrization. The latter is expected to better describe the data. As the
results show, both parametrizations underestimate the peak of the measured
correlation function equally.


title: Microcanonical entropies and radiative strength functions of $^{50,51}$V

abstract:
  The level densities and radiative strength functions (RSFs) of $^{50,51}$V
have been extracted using the ($^3$He,$\alpha \gamma$) and
($^3$He,$^3$He$^{\prime} \gamma$) reactions, respectively. From the level
densities, microcanonical entropies are deduced. The high $\gamma$-energy part
of the RSF is described by the giant electric dipole resonance. A significant
enhancement over the predicted strength in the region of $E_{\gamma} \lesssim
3$ MeV is seen, which at present has no theoretical explanation.


title:
Preliminary Results on Direct Photon-Photon HBT Measurements in
  $\sqrt{s_{\rm{NN}}}$ = 62.4 GeV and 200 GeV Au+Au Collisions at RHIC

abstract:
  We present the preliminary results on direct photon interferometry
measurements in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 and 200 GeV
using the STAR (Solenoidal Tracker at RHIC) detector. Photons are reconstructed
via $e^+/e^-$ conversions in STAR Time Projection Chamber(TPC) and energy
deposited by photons in STAR Barrel Electromagnetic Calorimeter(BEMC). The
two-photon correlations are measured using (1) both photons measured using
BEMC; (2) one photon from conversions and the other measured with BEMC. Both
the methodologies and the possible constraints in the correlation function
measurements are discussed.


title: Discovery of the neutron radiative decay

abstract:
  The aim of this work is experimental discovery and research of a rare neutron
mode, the radiative beta-decay, where a new particle, the radiative
gamma-quantum, is formed along with the expected decay products beta-electron,
recoil proton and antineutrino. The discovery of this rare neutron decay mode
was conducted through identification of triple coincidences events:
simultaneous registration of beta electron, proton and radiative gamma-quantum.
The ordinary neutron decay was registered by double coincidences of beta
electron and recoil proton. The ratio of triple to double coincidences is
connected with relative intensity of radiative neutron decay (branching ratio -
B.R.) B.R. = (3.2+1.6)10-3 (with 90 % C.L. and in the gamma energy region
greater than 35 keV), which we are the first in the world to measure during the
second and third cycles on FRMII (TUM, Germany) in Summer 2005. This value of
B.R. is consistent with standard electroweak theory.


title:
Charge Correlation in Near Side Hadron-Hadron Jets at sqrt(sNN)=200GeV
  in PHENIX

abstract:
  We analyze the relative azimuthal ($\Delta\phi$) distribution of same-charge
and opposite-charge particle pairs. We then remove elliptic flow background
using the ZYAM method. Comparisons between near angle $\Delta\phi$ peak widths
are presented for various centralities.


title:
Measurement of Trace I-129 Concentrations in CsI Powder and Organic
  Liquid Scintillator with Accelerator Mass Spectrometry

abstract:
  Levels of trace radiopurity in active detector materials is a subject of
major concern in low-background experiments. Procedures were devised to measure
trace concentrations of I-129 in the inorganic salt CsI as well as in organic
liquid scintillator with Accelerator Mass Spectrometry (AMS) which leads to
improvement in sensitivities by several orders of magnitude over other methods.
No evidence of their existence in these materials were observed. Limits of < 6
X 10^{-13} g/g and < 2.6 X 10^{-17} g/g on the contaminations of I-129 in CsI
and liquid scintillator, respectively, were derived.These are the first results
in a research program whose goals are to develop techniques to measure trace
radioactivity in detector materials by AMS.


title:
How to Measure Specific Heat Using Event-by-Event Average $p_T$
  Fluctuations

abstract:
  A simple way to visualize event-by-event average $p_T$ fluctuations is by
assuming that each collision has a different temperature parameter (inverse
$p_T$ slope) and that the ensemble of events has a temperature distribution
about the mean, $<T>$, with standard deviation $\sigma_T$. PHENIX characterizes
the non-random fluctuation of $M_{p_T}$, the event-by-event average $p_T$, by
$F_{p_T}$, the fractional difference of the standard deviation of the data from
that of a random sample obtained with mixed events. This can be related to the
temperature fluctuation:
  \[ F_{p_T}=\sigma^{\rm data}_{M_{p_T}}/\sigma^{\rm
random}_{M_{p_T}}-1\simeq(< n > -1) \sigma^2_{T}/< T>^2 \]
  Combining this with the Gavai, {\it et al.},\cite{Gavai05} and Korus, {\it et
al.},\cite{Korus} definitions of the specific heat per particle, a simple
relationship is obtained:
  \[ c_v/T^3={\mean{n}\over \mean{N_{tot}}} {1\over F_{p_T}} \]
  $F_{p_T}$ is measured with a fraction $\mean{n}/\mean{N_{tot}}$ of the total
particles produced, a purely geometrical factor representing the fractional
acceptance, $\sim 1/33$ in PHENIX. Gavai, {\it et al.} predict that
$c_v/T^3=15$, which corresponds to $F_{p_T}\sim 0.20$% in PHENIX, which may be
accessible by measurements of $M_{p_T}$ in the range $0.2\leq p_T\leq 0.6$
GeV/c. In order to test the Gavai, {\it et al.} prediction that $c_v/T^3$ is
reduced in a QGP compared to the ideal gas value (15 compared to 21), precision
measurements of $F_{p_T}$ in the range 0.20% for $0.2\leq p_T\leq 0.6$ GeV/c
may be practical.


title: S=0 pseudoscalar meson photoproduction from the proton

abstract:
  Many measurements of pseudoscalar mesons with S = 0 photoproduced on the
proton have been made recently. These new data are particularly useful in
theoretical investigations of nucleon resonances. How the new data from various
labs complement each other and help fill in the gaps in the world data set is
disscussed, with a glance at measurements to be made in the near future. Some
theoretical techniques used to explain the data are briefly described.


title: pi+- p differential cross sections at low energies

abstract:
  Differential cross sections for pi- p and pi+ p elastic scattering were
measured at five energies between 19.9 and 43.3 MeV. The use of the CHAOS
magnetic spectrometer at TRIUMF, supplemented by a range telescope for muon
background suppression, provided simultaneous coverage of a large part of the
full angular range, thus allowing very precise relative cross section
measurements. The absolute normalisation was determined with a typical accuracy
of 5 %. This was verified in a simultaneous measurement of muon proton elastic
scattering. The measured cross sections show some deviations from phase shift
analysis predictions, in particular at large angles and low energies. From the
new data we determine the real part of the isospin forward scattering
amplitude.


title:
Leptonic and charged kaon decay modes of the $\phi$ meson measured in
  heavy-ion collisions at the CERN SPS

abstract:
  We report a measurement of $\phi$ meson production in central Pb+Au
collisions at E$_{lab}$/A=158 GeV. For the first time in heavy-ion collisions,
$\phi$ mesons were reconstructed in the same experiment both in the K$^+$K$^-$
and the dilepton decay channel. Near mid-rapidity, this yields rapidity
densities, corrected for production at the same rapidity value, of 2.05 +-
0.14(stat) +- 0.25(syst) and 2.04 +- 0.49(stat)+-{0.32}(syst), respectively.
The shape of the measured transverse momentum spectra is also in close
agreement in both decay channels. The data rule out a possible enhancement of
the $\phi$ yield in the leptonic over the hadronic channel by a factor larger
than 1.6 at 95% CL.


title: Femtoscopy in heavy ion collisions: Wherefore, whence, and whither?

abstract:
  I present a brief overview of the wealth of femtoscopic measurements from the
past two decades of heavy ion experiments. Essentially every conceivable knob
at our disposal has been turned; the response of two-particle correlations to
these variations has revealed much about he space-momentum substructure of the
hot source created in the collisions. I discuss the present status of the
femtoscopic program and questions which remain, and point to new efforts which
aim to resolve them.


title: Signs of Thermalization from RHIC Experiments

abstract:
  Selected results from the first five years of RHIC data taking are reviewed
with emphasis on evidence for thermalization in central Au+Au collisions at
$\sqrt{s_{NN}}=200$ GeV.


title: Q-value of the superallowed beta decay of Ga-62

abstract:
  Masses of the radioactive isotopes 62Ga, 62Zn and 62Cu have been measured at
the JYFLTRAP facility with a relative precision of better than 18 ppb. A Q_EC
value of (9181.07 +- 0.54) keV for the superallowed decay of 62Ga is obtained
from the measured cyclotron frequency ratios of 62Ga-62Zn, 62Ga-62Ni and
62Zn-62Ni ions. The resulting Ft-value supports the validity of the conserved
vector current hypothesis (CVC). The mass excess values measured were (-51986.5
+-1.0) keV for 62Ga, (-61167.9 +- 0.9) keV for 62Zn and (-62787.2 +- 0.9) keV
for 62Cu.


title:
Symmetry energy and the isoscaling properties of the fragments produced
  in $^{40}$Ar, $^{40}$Ca + $^{58}$Fe, $^{58}$Ni reactions at 25 $-$ 53
  MeV/nucleon

abstract:
  The symmetry energy and the isoscaling properties of the fragments produced
in the multifragmentation of $^{40}$Ar, $^{40}$Ca + $^{58}$Fe, $^{58}$Ni
reactions at 25 - 53 MeV/nucleon were investigated within the framework of
statistical multifragmentation model. The isoscaling parameters $\alpha$, from
the primary (hot) and secondary (cold) fragment yield distributions, were
studied as a function of excitation energy, isospin (neutron-to-proton
asymmetry) and fragment symmetry energy. It is observed that the isoscaling
parameter $\alpha$ decreases with increasing excitation energy and decreasing
symmetry energy. The parameter $\alpha$ is also observed to increase with
increasing difference in the isospin of the fragmenting system. The sequential
decay of the primary fragments into secondary fragments, when studied as a
function of excitation energy and isospin of the fragmenting system, show very
little influence on the isoscaling parameter. The symmetry energy however, has
a strong influence on the isospin properties of the hot fragments. The
experimentally observed scaling parameters can be explained by symmetry energy
that is significantly lower than that for the ground state nuclei near
saturation density. The results indicate that the properties of hot nuclei at
excitation energies, densities and isospin away from the normal ground state
nuclei could be significantly different.


title:
The performance of thin NaI(Tl) scintillator plate for dark matter
  search

abstract:
  A thin (0.05cm) and wide area (5cmX5cm) NaI(Tl) scintillator was developed.
The performance of the thin NaI(Tl) plate, energy resolution, single
photoelectron energy and position sensitivity were tested. An excellent energy
resolution of 20% (FWHM) at 60keV was obtained. The single photoelectron energy
was calculated to be approximately 0.42 0.02keV. Position information in the
5cmx5cm area of the detector was also obtained by analyzing the ratio of the
number of photons collected at opposite ends of the detector. The position
resolution was obtained to be 1cm (FWHM) in the 5cmx5cm area.


title: Two-phonon 1- state in 112Sn observed in resonant photon scattering

abstract:
  Results of a photon scattering experiment on 112Sn using bremsstrahlung with
an endpoint energy of E_0 = 3.8 MeV are reported. A J = 1 state at E_x =
3434(1) keV has been excited. Its decay width into the ground state amounts to
Gamma_0 = 151(17) meV, making it a candidate for a [2+ x 3-]1- two-phonon
state. The results for 112Sn are compared with quasiparticle-phonon model
calculations as well as the systematics of the lowest-lying 1- states
established in other even-mass tin isotopes. Contrary to findings in the
heavier stable even-mass Sn isotopes, no 2+ states between 2 and 3.5 MeV
excitation energy have been detected in the present experiment.


title:
Detailed discussion of a linear electric field frequency shift
  (important for next generation) electric dipole moment searches) induced in
  confined gases by a magnetic field gradient: Implications for electric dipole
  moment experiments (II)

abstract:
  The search for particle electric dipole moments represents a most promising
way to search for physics beyond the standard model. A number of groups are
planning a new generation of experiments using stored gases of various kinds.
In order to achieve the target sensitivities it will be necessary to deal with
the systematic error resulting from the interaction of the well-known E x v
field with magnetic field gradients (often referred to as the geometric phase
effect [9,10]). This interaction produces a frequency shift linear in the
electric field, mimicking an edm. In this work we introduce an analytic model
for the correlation function which determines the behavior of the frequency
shift [11], and show in detail how it depends on the operating conditions of
the experiment. We also propose a method to directly measure ths correlation
function under the exact conditions of a given experiment.


title: Hard physics in PHENIX

abstract:
  We review recent results on hard observables in p+p, d+A and A+A collisions
obtained by the PHENIX experiment. Emphasis is put on those measurements that
provide insight into the properties of hot QCD media expected to be created in
nucleus-nucleus collisions at RHIC energies. Direct photon spectra, jet
properties and heavy quarks production measured in p+p and d+Au collisions are
compared to the same observables extracted in heavy ion collisions to find
modifications due to the presence of hot QCD matter.


title:
System size and centrality dependence of charged hadron transverse
  momentum spectra in Au+Au and Cu+Cu collisions at sqrt(s) = 62.4 and 200 GeV

abstract:
  We present transverse momentum distributions of charged hadrons produced in
Cu+Cu collisions at sqrt(s) = 62.4 and 200 GeV. The spectra are measured for
transverse momenta of 0.25 < p_T < 5.0 GeV/c at sqrt(s) = 62.4 GeV and 0.25 <
p_T < 7.0 GeV/c at sqrt(s) = 200 GeV, in a pseudo-rapidity range of 0.2 < eta <
1.4. The nuclear modification factor R_AA is calculated relative to p+p data at
both collision energies as a function of collision centrality. At a given
collision energy and fractional cross-section, R_AA is observed to be
systematically larger in Cu+Cu collisions compared to Au+Au. However, for the
same number of participating nucleons, R_AA is essentially the same in both
systems over the measured range of p_T, in spite of the significantly different
geometries of the Cu+Cu and Au+Au systems.


title: Some Aspects of Fundamental Symmetries and Interactions

abstract:
  The known fundamental symmetries and interactions are well described by the
Standard Model. Features of this powerful theory, which are described but not
deeper explained, are addressed in a variety of speculative models.
Experimental tests of the predictions in such approaches can be either through
direct observations at the highest possible accelerator energies or through
precision measurements in which small deviations from calculated values within
the Standard Model are searched for. Antiproton physics renders a number of
possibilities to search for new physics.


title: The Ratio Sigma0/Lambda at RHIC

abstract:
  While yields of Sigma0 have been measured in many different colliding
systems, no measurements exist in high energy nuclear collisions. It also
remains unexplored whether the relative yields of Sigma0 and Lambda change in
collisions of heavy ions where a dense medium may permit alternate production
mechanisms, such as quark coalescence. The STAR detector at RHIC is able to
reconstruct the electromagnetic Sigma0 decay into Lambda plus gamma via the
weak decay of the Lambda and gamma conversions into e+e- pairs in the detector
material. We report here on our measurement of the ratio Sigma0/Lambda in
minimum bias 200 GeV d+Au collisions. We also compare the measured ratio to
expectations from various models.


title:
eta-prime photoproduction on the proton for photon energies from 1.527
  to 2.227 GeV

abstract:
  Differential cross sections for the reaction gamma p -> eta-prime p have been
measured with the CLAS spectrometer and a tagged photon beam with energies from
1.527 to 2.227 GeV. The results reported here possess much greater accuracy
than previous measurements. Analyses of these data indicate for the first time
the coupling of the etaprime N channel to both the S_11(1535) and P_11(1710)
resonances, known to couple strongly to the eta N channel in photoproduction on
the proton, and the importance of j=3/2 resonances in the process.


title:
Partial level density of the n-quasiparticle excitations in the nuclei
  of the 39< A <201 region

abstract:
  Level density and radiative strength functions are obtained from the analysis
of two-step cascades intensities following the thermal neutrons capture. The
data on level density are approximated by the sum of the partial level
densities corresponding to n quasiparticles excitation. The most probable
values of the collective enhancement factor of the level density are found
together with the thresholds of the next Cooper nucleons pair breaking. These
data allow one to calculate the level density of practically any nucleus in
given spin window in the framework of model concepts, taking into account all
known nuclear excitation types. The presence of an approximation results
discrepancy with theoretical statements specifies the necessity of rather
essentially developing the level density models. It also indicates the
possibilities to obtain the essentially new information on nucleon correlation
functions of the excited nucleus from the experiment.


title:
Measurement of the Spin--Dependence of the pbar p Interaction at the
  AD-Ring

abstract:
  An internal polarized hydrogen storage cell gas target is proposed for the
AD--ring to determine for the first time the two total spin--dependent cross
sections $\sigma_1$ and $\sigma_2$ at antiproton beam energies in the range
from 50 to 200 MeV. The data will allow the definition of the optimum working
parameters of a dedicated Antiproton Polarizer Ring (APR), which has recently
been proposed by the PAX collaboration for the new Facility for Antiproton and
Ion Research (FAIR) at GSI in Darmstadt, Germany. The availability of an
intense beam of polarized antiprotons will provide access to a wealth of
single-- and double--spin observables, thereby opening a new window to QCD
transverse spin physics. The physics program proposed by the PAX collaboration
includes a first measurement of the transversity distribution of the valence
quarks in the proton, a test of the predicted opposite sign of the
Sivers--function, related to the quark distribution inside a transversely
polarized nucleon, in Drell--Yan (DY) as compared to semi--inclusive Deep
Inelastic Scattering, and a first measurement of the moduli and the relative
phase of the time--like electric and magnetic form factors $G_{E,M}$ of the
proton.


title: Proton induced reactions on naturalU at 62.9 MeV

abstract:
  Double differential cross sections (DDCS) for light charged particles
(proton, deuteron, triton, 3He, alpha) and neutrons produced by a proton beam
impinging on a 238U target at 62.9 MeV were measured at the CYCLONE facility in
Louvain-la-Neuve (Belgium). These measurements have been performed using two
independent experimental set-ups ensuring neutron (DeMoN counters) and light
charged particles (Si-Si-CsI telescopes) detection. The charged particle data
were measured at 11 different angular positions from 25 degrees to 140 degrees
allowing the determination of angle differential, energy differential and total
production cross sections.


title:
Photon production in $\sqrt{s_{NN}}$=200 GeV Au+Au collisions measured
  by the PHENIX experiment at RHIC

abstract:
  Direct photon production in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV has
been measured in the $p_T$ range of 1$<$$p_T$$<$5 GeV/$c$. The yield as
acfunction of centrality is in agreement with published data of the RHIC 2002
run, and with results from a new method that explores very low mass dileptons.
The result is compared to several theoretical calculations, and it is found
that the measurement is not inconsistent with calculations including thermal
photon contributions.


title:
Accuracy of B(E2; 0+ -> 2+) transition rates from intermediate-energy
  Coulomb excitation experiments

abstract:
  The method of intermediate-energy Coulomb excitation has been widely used to
determine absolute B(E2; 0+ -> 2+) quadrupole excitation strengths in exotic
nuclei with even numbers of protons and neutrons. Transition rates measured
with intermediate-energy Coulomb excitation are compared to their respective
adopted values and for the example of 26Mg to the B(E2; 0+ -> 2+) values
obtained with a variety of standard methods. Intermediate-energy Coulomb
excitation is found to have an accuracy comparable to those of long-established
experimental techniques.


title: The (t,3He) and (3He,t) reactions as probes of Gamow-Teller strength

abstract:
  Charge-exchange reactions are an important tool for determining
weak-interaction rates. They provide stringent tests for nuclear structure
models necessary for modeling astrophysical environments such as neutron stars
and core-collapse supernovae. In anticipation of (t,3He) experiments at 115
MeV/nucleon on nuclei of relevance (A~40-120) in the late evolution of stars,
it is shown via a study of the 26Mg(t,3He) reaction that this probe is an
accurate tool for extracting Gamow-Teller transition strengths. To do so, the
data are complemented by results from the 26Mg(3He,t) reaction at 140
MeV/nucleon which allows for a comparison of T=2 analog states excited via the
mirror reactions. Extracted Gamow-Teller strengths from 26Mg(t,3He) and
26Mg(3He,t) are compared with those from 26Mg(d,2He) and 26Mg(p,n) studies,
respectively. A good correspondence is found, indicating probe-independence of
the strength extraction. Furthermore, we test shell-model calculations using
the new USD-05B interaction in the sd-model space and show that it reproduces
the experimental Gamow-Teller strength distributions well. A second goal of
this work is to improve the understanding of the (t,3He) and (3He,t) reaction
mechanisms at intermediate energies since detailed studies are scarce. The
Distorted-Wave Born Approximation is employed, taking into account the
composite structures of the 3He and triton particles. The reaction model
provides the means to explain systematic uncertainties at the 10-20% level in
the extraction of Gamow-Teller strengths as being due to interference between
Gamow-Teller dL=0, dS=1 and dL=2, dS=1 amplitudes that both contribute to
transitions from 0+ to 1+ states.


title:
Photodissociation of p-process nuclei studied by bremsstrahlung induced
  activation

abstract:
  A research program has been started to study experimentally the
near-threshold photodissociation of nuclides in the chain of cosmic heavy
element production with bremsstrahlung from the ELBE accelerator. An important
prerequisite for such studies is good knowledge of the bremsstrahlung
distribution which was determined by measuring the photodissociation of the
deuteron and by comparison with model calculations. First data were obtained
for the astrophysically important target nucleus 92-Mo by observing the
radioactive decay of the nuclides produced by bremsstrahlung irradiation at
end-point energies between 11.8 MeV and 14.0 MeV. The results are compared to
recent statistical model calculations.


title:
Pygmy dipole strength close to particle-separation energies - the case
  of the Mo isotopes

abstract:
  The distribution of electromagnetic dipole strength in 92, 98, 100 Mo has
been investigated by photon scattering using bremsstrahlung from the new ELBE
facility. The experimental data for well separated nuclear resonances indicate
a transition from a regular to a chaotic behaviour above 4 MeV of excitation
energy. As the strength distributions follow a Porter-Thomas distribution much
of the dipole strength is found in weak and in unresolved resonances appearing
as fluctuating cross section. An analysis of this quasi-continuum - here
applied to nuclear resonance fluorescence in a novel way - delivers dipole
strength functions, which are combining smoothly to those obtained from
(g,n)-data. Enhancements at 6.5 MeV and at ~9 MeV are linked to the pygmy
dipole resonances postulated to occur in heavy nuclei.


title:
First observation of in-medium effects on phase space distributions of
  antikaons measured in proton-nucleus collisions

abstract:
  Differential production cross sections of $K^{\pm}$ mesons have been measured
in $p$ + C and $p$ + Au collisions at 1.6, 2.5 and 3.5 GeV proton beam energy.
At beam energies close to the production threshold, the $K^-$ multiplicity is
strongly enhanced with respect to proton-proton collisions. According to
microscopic transport calculations, this enhancement is caused by two effects:
the strangeness exchange reaction $NY \to K^- NN$ and an attractive in-medium
$K^-N$ potential at saturation density.


title: Performance of ALICE pixel prototypes in high energy beams

abstract:
  The two innermost layers of the ALICE inner tracking system are instrumented
with silicon pixel detectors. Single chip assembly prototypes of the ALICE
pixels have been tested in high energy particle beams at the CERN SPS.
Detection efficiency and spatial precision have been studied as a function of
the threshold and the track incidence angle. The experimental method, data
analysis and main results are presented.


title: Double Beta Decay of $^{100}$Mo to Excited Final States

abstract:
  A systematic study of the inclusive ($0\nu+2\nu$) double beta ($\beta\beta$)
decay of $^{100}$Mo to various excited final states of $^{100}$Ru was
performed. Utilizing two large HPGe detectors operated in coincidence, a search
for the subsequent deexcitation gamma-gamma cascades was conducted. A 1.05-kg
sample of isotopically enriched (98.4%) $^{100}$Mo was investigated for 455
days, yielding an unambiguous observation of the double beta decay of
$^{100}$Mo to the $0_1^+$ state (1130.3 keV) of $^{100}$Ru. This excited final
state decays via the $0_1^+ \to 2_1^+ \to 0_{gs}^+$ sequence (with
$E_{\gamma1}$ = 590.8 keV and $E_{\gamma2}$ = 539.5 keV), and 22 such
coincidence events were detected, with a continuous background estimated to be
2.5 events. This counting rate corresponds to a decay half-life for the
$\beta\beta($0^+ rightarrow 0_1^+)$ transition of $T_{1/2}^{(0\nu+2\nu)} = [
6.0^{+1.9}_{-1.1} (\rm{stat}) \pm 0.6(\rm{syst})] \times 10^{20}$ years. Lower
limits on decay half-lives were achieved for higher excited final states.


title:
Forward Lambda Production and Nuclear Stopping Power in d+Au Collisions
  at RHIC

abstract:
  Using the forward time projection chambers of STAR we measure the centrality
dependent Lambda and Anti-Lambda yields in d+Au collisions at \sqrt{s_{NN} =
200 GeV at forward and backward rapidities. The contributions of different
processes to particle production and baryon transport are probed exploiting the
inherent asymmetry of the d+Au system. While the d side appears to be dominated
by multiple independent nucleon-nucleon collisions, nuclear effects contribute
significantly on the Au side. Using the constraint of baryon number
conservation, the rapidity loss of baryons in the incoming deuteron can be
estimated as a function of centrality. This is compared to a model and to
similar measurements in Au+Au, which gives insights into the nuclear stopping
power at relativistic energies.


title: Evidence for transfer followed by breakup in 7Li + 65Cu

abstract:
  The observation of a large cross-section for the alpha + d channel compared
to breakup into the alpha + t channel from an exclusive measurement for the
7Li+65Cu system at 25 MeV is presented. A detailed analysis of the angular
distribution using coupled channels Born approximation calculations has
provided clear evidence that the observed alpha + d events arise from a two
step process, i.e. direct transfer to the 2.186 MeV (3+) resonance in the alpha
+ d continuum of 6Li followed by breakup, and are not due to final state
interaction effects.


title:
Energy and centrality dependence of antiproton and proton production and
  the antilambda to antiproton ratio in Pb+Pb collisions between 20A GeV and
  158A GeV

abstract:
  The transverse mass distributions for antiprotons are measured at midrapidity
for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions
at 20A, 30A, 40A and 80A GeV beam energies in the fixed target experiment NA49
at the CERN SPS. The rapidity density, inverse slope parameter and mean
transverse mass derived from the transverse mass distributions are studied as a
function of the incident energy and the collision centrality and compared to
the relevant data on proton production. The shapes of the transverse mass
distributions of antiproton and proton are very similar. The ratios of the
particle yields, antiproton/proton and antilambda/antiproton, are also
analysed. The antiproton to proton ratio exhibits an increase with decreasing
centrality and a steep rise with increasing beam energy. The antilambda to
antiproton ratio increases beyond unity with decreasing beam energy.


title:
Onset of Deconfinement and Critical Point - Future Ion Program at the
  CERN SPS

abstract:
  A new experimental program to study hadron production in collisions of nuclei
at the CERN SPS is presented. The program will focus on measurements of
fluctuations and long correlations with the aim to identify properties of the
onset of deconfinement and search for the critical point of strongly
interacting matter.


title: Production of the 1S0 diproton in the pp -> pp pi0 reaction at 0.8 GeV

abstract:
  The pp -> pp pi0 differential cross section has been measured with the ANKE
spectrometer at COSY-Juelich for pion cms angles between 0 and 15.4 degrees at
a proton beam energy of 0.8 GeV. The selection of diproton pairs with an
excitation energy E_{pp} < 3 MeV ensures that the final pp system is dominantly
in the spin-singlet 1S0 state. The kinematics are therefore very similar to
those of pp -> d pi+ but with different spin and isospin transitions. The
results will thus provide a crucial extra test of pion production models in
nucleon-nucleon collisions.
  The cross sections, which are over two orders of magnitude smaller than those
of pp -> d pi+, show a forward dip, even stronger than that seen at lower
energies. This behaviour is well reproduced in a theoretical model that
includes P-wave Delta-N states.


title: CLAS: Double-Pion Beam Asymmetry

abstract:
  Beam-helicity asymmetries for the gamma+p -> pi+ + pi- + p reaction have been
measured for center-of-mass energies between 1.35 GeV and 2.30 GeV at Jefferson
Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized
tagged photons. The beam-helicity asymmetries vary with kinematics and exhibit
strong sensitivity to the dynamics of the reaction, as demonstrated in the
comparison of the data with results of various phenomenological model
calculations. These models currently do not provide an adequate description of
the data over the entire kinematic range covered in this experiment. Additional
polarization observables are accessible in an upcoming experiment at Jefferson
Lab with polarized beam and target.


title:
Energy Dependence Systematics of Strange and Multi-Strange Particle
  Production

abstract:
  We present results on systematic measurements of strange and multi-strange
particles with the STAR detector for center of mass energies per nucleon pair
of 62.4 and 200 GeV in ultra-relativistic Au+Au collisions at RHIC. We use
these results to characterize the chemical and kinetic freeze-out properties of
the fireball produced by the collision. This is done by comparison to
statistical and hydrodynamical models as well as parameterization. We emphasize
particularly the energy dependence of these features comparing measurements
obtained at RHIC with different energies but also at the lower energies
available at the SPS.


title: Experiments with polarized 3He at MAMI

abstract:
  Experiments with polarized 3He at MAMI have already a long tradition. The A3
collaboration started in 1993 with the aim to measure the electric form factor
of the neutron. At this time MAMI was the second accelerator where experiments
with 3He were possible. Some years before this pilot experiment the development
of the apparatus to polarize 3He in Mainz started. There are two techniques
which allow to polarize sufficient large quantities of 3He. Both techniques
will be compared and the benefit of 3He for nuclear physics will be discussed.
An review of the experiments done so far with 3He at MAMI will be given and the
progress in the target development, the detector setup and the electron beam
performance will be pointed out.


title: K^*0 Photoproduction off the proton at CLAS

abstract:
  We report here differential cross sections for the reaction $\gamma p \to
K^{*0}\Sigma^+$ for the first time with high statistics. The measurements were
done using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab.
Data were taken at 3.115 GeV electron beam energy using tagged photons incident
upon a liquid hydrogen target. In addition, our analysis provides information
about nucleon resonances and their couplings to $K^*$ decay. Our data will be
used to test predictions of theoretical models of K$^*$ production, and to
provide constraints on the $K^*\Sigma N$ coupling constant used in these
models.


title: $2\alpha+t$ cluster structure in $^{11}$B

abstract:
  The cluster structures of the excited states in $^{11}$B are studied by
analyzing the isoscalar monopole and quadrupole strengths in the
$^{11}$B($d$,$d'$) reaction at $E_d=200$ MeV. The excitation strengths are
compared with the predictions by the shell-model and antisymmetrized
molecular-dynamics (AMD) calculations. It is found that the large monopole
strength for the $3/2^-_3$ state at $E_x=8.56$ MeV is well described by the AMD
calculation and is an evidence for a developed $2\alpha+t$ cluster structure.


title:
Measurement of the response of a Ga solar neutrino experiment to
  neutrinos from an 37Ar source

abstract:
  An intense source of 37Ar was produced by the (n,alpha) reaction on 40Ca by
irradiating 330 kg of calcium oxide in the fast neutron breeder reactor at
Zarechny, Russia. The 37Ar was released from the solid target by dissolution in
acid, collected from this solution, purified, sealed into a small source, and
brought to the Baksan Neutrino Observatory where it was used to irradiate 13
tonnes of gallium metal in the Russian-American gallium solar neutrino
experiment SAGE. Ten exposures of the gallium to the source, whose initial
strength was 409 +/- 2 kCi, were carried out during the period April to
September 2004. The 71Ge produced by the reaction 71Ga(nu_e,e^-)71Ge was
extracted, purified, and counted. The measured production rate was 11.0 ^+1.0
_-0.9 (stat) +/- 0.6 (syst) atoms of 71Ge/d, which is 0.79 ^+0.09_-0.10 of the
theoretically calculated production rate. When all neutrino source experiments
with gallium are considered together, there is an indication the theoretical
cross section has been overestimated.


title: The Rise and Fall of Pentaquarks in Experiments

abstract:
  Experimental evidence for and against the existence of pentaquarks has
accumulated rapidly in the last three years. If they exist, they would be
dramatic examples of hadronic states beyond our well-tested and successful
particle models. The positive evidence suggests existence of baryonic objects
with widths of at most a few MeV, some displaying exotic quantum numbers, such
as baryons with strangeness $S = +1$. The non-observations of these states have
often come from reaction channels very different from the positive evidence
channels, making comparisons difficult. The situation has now been largely
clarified, however, by high-statistics repetitions of the positive sightings,
with the result that none of the positive sightings have been convincingly
reproduced. The most recent unconfirmed positive sightings suffer again from
low statistics and large backgrounds. It seems that a kind of ``bandwagon''
effect led to the overly-optimistic interpretation of numerous experiments in
the earlier reports of exotic pentaquarks.


title: Some Striking New STAR Results

abstract:
  Recent high-statistics Au+Au and Cu+Cu runs at RHIC have provided a wealth of
new data that allow STAR to answer several outstanding questions regarding the
nature of the hot, dense medium that is created in ultrarelativistic heavy-ion
collisions. However, the new data also raise new questions that require further
study. Here, we focus on a few qualitatively new results presented by STAR for
the first time at Quark Matter `05.


title:
Similarity of Initial States in A+A and p+p Collisions in Constituent
  Quarks Framework

abstract:
  The multiparticle production results from A+A and p(\bar{p})+p collisions
have been compared based on the number of nucleon participants and the number
of constituent quark (parton) participants. In both normalizations, we observe
that the charged particle densities in Au+Au and Cu+Cu collisions are similar
for both \sqrt{s_{NN}} = 62.4 and 200 GeV. This implies that in symmetric
nucleus-nucleus collisions the charged particle density does not depend on the
size of the two colliding nuclei but only on the collision energy. In the
nucleon participants framework, the particle density at mid-rapidity as well as
in the limiting fragmentation region from A+A collisions are higher than those
of p(\bar{p})+p collisions at the same energy. Also the integrated total
charged particle in A+A collisions as a function of number nucleon participants
is higher than p(\bar{p})+p collisions at the same energy indicating that there
is no smooth transition between peripheral A+A and nucleon-nucleon collisions.
However, when the comparison is made in the constituent quarks framework, A+A
and p(\bar{p})+p collisions exhibit a striking degree of agreement. The
observations presented in this paper imply that the number of constituent quark
pairs participating in the collision controls the particle production. One may
therefore conjecture that the initial states A+A and p+p collisions are similar
when the partonic considerations are used in normalization. Another interesting
result is that there is an overall factorization of dN/d\eta shapes as a
function of collision centrality between Au+Au and Cu+Cu collisions at the same
energy, \sqrt{s_{NN}} = 200 GeV.


title:
Coherent photoproduction of J/Psi and high-mass e+e- pairs in
  ultra-peripheral Au+Au collisions at sqrt(s_NN) = 200 GeV

abstract:
  High energy ultra-peripheral collisions (UPC) of heavy-ions generate strong
electromagnetic fields which open the possibility to study gamma-gamma and
gamma-nucleus processes in a kinematic regime so far unexplored. We report on
preliminary PHENIX results of J/Psi and high-mass e+e- photoproduction at
mid-rapidity in coherent electromagnetic Au+Au interactions at sqrt(s_NN) = 200
GeV tagged with forward neutron emission from the Au* dissociation.


title:
Application of the Time of Flight Technique for Lifetime Measurements
  with Relativistic Beams of Heavy Nuclei

abstract:
  A novel method for picosecond lifetime measurements of excited gamma-ray
emitting nuclear states has been developed for fast beams from fragmentation
reactions. A test measurement was carried out with a beam of 124Xe at an energy
of ~55 MeV/u. The beam ions were Coulomb excited to the first 2+ state on a
movable target. Excited nuclei emerged from the target and decayed in flight
after a distance related to the lifetime. A stationary degrader positioned
downstream with respect to the target was used to further reduce the velocity
of the excited nuclei. As a consequence, the gamma-ray decays from the 2+
excited state that occurred before or after traversing the degrader were
measured at a different Doppler shift. The gamma-ray spectra were analyzed from
the forward ring of the Segmented Germanium Array; this ring positioned at 37
deg. simultaneously provides the largest sensitivity to changes in velocity and
the best energy resolution. The ratio of intensities in the peaks at different
Doppler shifts gives information about the lifetime if the velocity is
measured. The results and range of the application of the method are discussed.


title:
First measurement of the spectral function at high energy and momentum
  in medium-heavy nuclei

abstract:
  The experiment E97-006 was performed at Jefferson Lab to measure the momentum
and energy distribution of protons in the nucleus far from the region of the
(approximate) validity of the mean field description, i.e. at high momentum and
energies. The occurrence of this strength is long known from occupation numbers
less than one. In the experiment reported here this strength was directly
measured for the first time. The results are compared to modern many-body
theories. Further the transparency factor of C12 was determined in the
Q^2-region of 0.6 to 1.8 (GeV/c)^2.


title:
Precision Measurement of PArity Violation in Polarized Cold Neutron
  Capture on the Proton: the NPDGamma Experiment

abstract:
  The NPDGamma experiment at the Los Alamos Neutron Science Center (LANSCE) is
dedicated to measure with high precision the parity violating asymmetry in the
$\gamma$ emission after capture of spin polarized cold neutrons in
para-hydrogen. The measurement will determine unambiguously the weak
pion-nucleon-nucleon ($\pi NN$) coupling constant {\it f$^1_{\pi}$}


title:
Direct photon measurement in Au+Au collisions at $\sqrt{s_{NN}}$=200GeV
  a t RHIC

abstract:
  Direct photon production in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV has
been measured. The result is compared to several theoretical calculations, and
found that it is not inconsistent with ones including thermal radiation from
QGP or jet-photon conversion process on top of a NLO pQCD expectation. The
direct photon contribution in dilepton measurement is also evaluated.


title: Symmetry Energy in the Equation of State of Asymmetric Nuclear Matte

abstract:
  The symmetry energy is an important quantity in the equation of state of
isospin asymmetric nuclear matter. This currently unknown quantity is key to
understanding the structure of systems as diverse as the neutron-rich nuclei
and neutron stars. At TAMU, we have carried out studies, aimed at understanding
the symmetry energy, in a variety of reactions such as, the multifragmentation
of $^{40}$Ar, $^{40}$Ca + $^{58}$Fe, $^{58}$Ni and $^{58}$Ni, $^{58}$Fe +
$^{58}$Ni, $^{58}$Fe reactions at 25 - 53 AMeV, and deep-inelastic reactions of
$^{86}$Kr + $^{124,112}$Sn, $^{64,58}$Ni (25 AMeV), $^{64}$Ni + $^{64,58}$Ni,
$^{112,124}$Sn, $^{232}$Th, $^{208}$Pb (25 AMeV) and $^{136}$Xe + $^{64,58}$Ni,
$^{112,124}$Sn, $^{232}$Th, $^{197}$Au (20 AMeV). Here we present an overview
of some of the results obtained from these studies. The results are analyzed
within the framework of statistical and dynamical models, and have important
implications for future experiments using beams of neutron-rich nuclei.


title:
Single pi+ Electroproduction on the Proton in the First and Second
  Resonance Regions at 0.25GeV^2 < Q^2 < 0.65GeV^2 Using CLAS

abstract:
  The ep -> e'pi^+n reaction was studied in the first and second nucleon
resonance regions in the 0.25 GeV^2 < Q^2 < 0.65 GeV^2 range using the CLAS
detector at Thomas Jefferson National Accelerator Facility. For the first time
the absolute cross sections were measured covering nearly the full angular
range in the hadronic center-of-mass frame. The structure functions sigma_TL,
sigma_TT and the linear combination sigma_T+epsilon*sigma_L were extracted by
fitting the phi-dependence of the measured cross sections, and were compared to
the MAID and Sato-Lee models.


title: Single Spin Asymmetries in the BRAHMS Experiment

abstract:
  The BRAHMS experiment at RHIC has measured the transverse single spin
asymmetries in polarized pp induced pion production at RHIC. The results from
the RHIC run-5 shows a significant asymmetry for pi+ and pi- at moderate xF.
The trend of the data is in agreement with lower energy results while the
absolute values are surprisingly large. The pT dependence is approximately
inversely propotional to pT in agreement with the pQCD expectations.


title: "Bi-modal'' Isoscalar Giant Dipole Strength in $^{58}$Ni

abstract:
  The strength distribution of the isoscalar giant dipole resonance (ISGDR) in
$^{58}$Ni has been obtained over the energy range 10.5--49.5 MeV via extreme
forward angle scattering (including 0$^{\circ}$) of 386 MeV $\alpha$ particles.
We observe a ``bi-modal'' ${E1}$ strength distribution for the first time in an
A $<$ 90 nucleus. The observed ISGDR strength distribution is in good agreement
with the predictions of a recent QRPA calculation.


title: Rapidity Dependence of Elliptic Flow at RHIC

abstract:
  The measured elliptic flow (v2) of identified particles as a function of pT
and centrality at RHIC suggests the created medium in Au+Au collisions achieves
early local thermal equilibrium that is followed by hydrodynamic expansion. It
is not known if the eta dependence on v2 is a general feature of elliptic flow
or reflects other changes in the particle spectra in going from mid-rapidity to
foward rapidities. The BRAHMS experiment provides a unique capability compared
to the other RHIC experiments to measure v2 for identified particles over a
wide rapidity range. From Run 4 Au+Au collision at sqrt{s_{NN}} = 200GeV,
identified elliptic flow is studied using the BRAHMS spectrometers, which cover
0<eta<3.4. The BRAHMS multiplicity array is used to determine the v2 event
plane for the identified particle elliptic flow and to measure the
pT-integrated flow for charged hadrons.


title: High pT Suppression in CuCu Collsions at 200 GeV/NN at RHIC

abstract:
  Collisions between hadronic systems at relativistic energies provide a window
on the small-x gluon distributions of fast moving nuclei. It has been predicted
that gluon saturation effects will manifest themselves as a suppression in the
transverse momentum (pT) distribution at a scale which is connected with the
rapidity of the measured particles. Saturation effects are most evident at
large (pseudo)-rapidity, i.e., at small angles relative to the beam direction.
The dependence of the nuclear modification factor on the number of participants
provides a constraint on the mechanism underlying the high-pT suppression. Here
we present results for the nuclear modification factor Rcp at forward rapidity
as a function of system mass comparing results from CuCu, AuAu and dAu
collsions at 200 GeV/NN.


title: $J/\psi$ Production in $p+p$, $d+Au$, and $Cu+Cu$ Collisions at RHIC

abstract:
  PHENIX results for $J/\psi$ production in $p+p$, $d+Au$, and $Cu+Cu$
collisions at $\sqrt{s_{NN}}=200$ GeV are presented.


title: Reactor Neutrinos

abstract:
  We review the status and the results of reactor neutrino experiments, that
toe the cutting edge of neutrino research. Short baseline experiments have
provided the measurement of the reactor neutrino spectrum, and are still
searching for important phenomena such as the neutrino magnetic moment. They
could open the door to the measurement of coherent neutrino scattering in a
near future. Middle and long baseline oscillation experiments at Chooz and
KamLAND have played a relevant role in neutrino oscillation physics in the last
years. It is now widely accepted that a new middle baseline disappearance
reactor neutrino experiment with multiple detectors could provide a clean
measurement of the last undetermined neutrino mixing angle theta13. We conclude
by opening on possible use of neutrinos for Society: NonProliferation of
Nuclear materials and Geophysics.


title:
The Effects of Varying the Correlation Volume on Strangeness Production
  in High Energy Collisions

abstract:
  Preliminary results on strange particle production versus collision
centrality are presented. STAR measurements from \sqrts = 200 GeV heavy-ion and
\pp collisions are compared to SPS measurements. A systematic study of strange
particle production is presented with the aim of establishing how the
correlation volume of the produced source affects the scale of strange particle
creation, including that of the multi-strange baryons. A linear increase of
strangeness production with volume has been suggested by thermal models as an
indication that the collision region has reached sufficient size such that
small volume effects can be neglected. Analysis of preliminary results from
STAR show that, using the assumption that the number of participants is
linearly correlated with the volume, no such regime was obtained. This suggests
that the correlation volume ''seen" by strange quarks is not merely that of the
initial overlap.


title: Primary versus secondary gamma intensities in 171Yb(n_th,gamma)

abstract:
  The two published literature values [Greenwood et al., Nucl. Phys. A252, 260
(1975) and Gelletly et al., J. Phys. G 11, 1055 (1985)] for absolute primary
gamma intensities following thermal neutron capture of 171Yb differ in average
by a factor of three. We have resolved this conflict in favor of Greenwood et
al. by a measurement of primary versus secondary intensities.


title: The i11/2 f5/2 and i11/2 p3/2 neutron particle-hole multiplets in 208Pb

abstract:
  Inelastic proton scattering via isobaric analog resonances allows to derive
rather complete information about neutron particle-hole states. We applied this
method to the doubly-magic nucleus 208Pb by measuring angular distributions of
208Pb(p, p') on top of the isobaric analog resonances in 209Bi with the Q3D
magnetic spectrograph at M\"unchen. We identify the six states of the i11/2
f5/2 multiplet and the four states of the i11/2 p3/2 multiplet in the energy
range 4.6 MeV < Ex < 5.3 MeV. Firm spin assignments for the ten states are
given, some of them new. Additional measurements of the reaction 207Pb(d, p)
confirm the fragmented i11/2 p1/2 multiplet.


title: On the experimental search for neutron -- mirror neutron oscillations

abstract:
  Fast neutron-mirror neutron (n-n') oscillations were proposed recently as the
explanation of the GZK puzzle. We discuss possible laboratory experiments to
search for such oscillaions and to improve the present very weak constraints on
the value of the n-n' oscillation probability.


title:
Conversion electrons used to monitor the energy scale of electron
  spectrometer near tritium endpoint - a simulation study

abstract:
  Measurements of the endpoint region of the tritium beta-decay spectrum
provides good possibility to determine neutrino mass. This, however, needs a
perfect monitoring of the spectrometer energy scale. A parallel measurement of
electron line of known energy - in particular the 83mKr conversion K-line - may
serve well to this purpose. The 83Rb decaying to 83mKr seems to be a very
suitable radioactive source due to its halflife of 86.2 day. In this work, we
determine the amount of 83Rb which is necessary for a successful monitoring.


title: Cosmic muon flux at shallow depths underground

abstract:
  We consider the cosmic muon background for the installations located at
shallow depths. We suggest a relatively simple formula for the sea-level muon
spectrum, which allows calculate dependencies of the vertical muon intensity
and integral muon flux density on overburden. Muon flux dependency on the
zenith angle at overburden of 10 to 100 meters of standard rock shows that muon
angular distribution practically does not change in this interval. We present
muon angular distributions for three typical apparatus locations in
measurements on the surface and at shallow depths. It is shown that for such
installations the active shielding "umbrella" should overlap a zenith angle of
\theta ~ 80^o to remove the cosmic muon background.


title: TRImP - A new facility to produce and trap radioactive isotopes

abstract:
  At the Kernfysisch Vensneller Institiutr (KVI) in Groningen, NL, a new
facility (TRImP) is under development. It aims for producing, slowing down, and
trapping of radioactive isotopes in order to perform accurate measurements on
fundamental symmetries and interactions. A production target station and a dual
magnetic separator installed and commissioned. We will slow down the isotopes
of interest using an ion catcher and in a further stage a radiofrequency
quadropole gas cooler (RFQ). The isotopes will finally be trapped in an atomic
trap for precision studies.


title:
Enhancement of hyperon production at central rapidity in 158 A GeV/c
  Pb-Pb collisions

abstract:
  Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and
pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been
measured at central rapidity and medium transverse momentum as functions of the
centrality of the collision. Comparing the yields in Pb-Pb to those in pBe
interactions, strangeness enhancement is observed. The enhancement increases
with the centrality and with the strangeness content of the hyperons, reaching
a factor of about 20 for the Omega in the central Pb-Pb collisions.


title:
Identified particle transverse momentum spectra in p+p and d+Au
  collisions at sqrt{s_NN} = 200 GeV

abstract:
  The transverse momentum ($p_{\mathrm T}$) spectra for identified charged
pions, protons and anti-protons from $p$+$p$ and $d$+Au collisions are measured
around midrapidity ($\mid$y$\mid$ $<$ 0.5) over the range of 0.3 $<$
$p_{\mathrm T}$ $<$ 10 GeV/$c$ at $\sqrt{s_{\mathrm {NN}}}$ = 200 GeV. The
charged pion and proton+anti-proton spectra at high p_{T} in p+p collisions
have been compared with the next-to-leading order perturbative quantum
chromodynamic (NLO pQCD) calculations with a specific fragmentation scheme. The
p/pi^{+} and pbar/pi^{-}has been studied at high p_{T}. The nuclear
modification factor (R_{dAu}) shows that the identified particle Cronin effects
around midrapidity are significantly non-zero for charged pions and to be even
larger for protons at intermediate p_{T} (2 < p_{T} < 5 GeV/c).


title: Some thoughts on di-jet correlation in Au + Au collisions from PHENIX

abstract:
  PHENIX has measured the two particle azimuth correlation in Au + Au at
$\sqrt{s}$ = 200 GeV. Jet shape and yield at the away side are found to be
strongly modified at intermediate and low $p_T$, and the modifications vary
dramatically with $p_T$ and centrality. At high $p_T$, away side jet peak
reappears but the yield is suppressed. We discuss the possible physics pictures
leading to these complicated modifications.


title: Rapidity dependence of Bose-Einstein correlations at SPS energies

abstract:
  This article is devoted to results on pion-pion -Bose-Einstein correlations
in central Pb+Pb collisions measured by the NA49 experiment at the CERN SPS.
Rapidity as well as transverse momentum dependences of the correlation lengths
will be shown for collisions at 20A, 30A, 40A, 80A, and 158A GeV beam energy.
Only a weak energy dependence of the radii is observed at SPS energies. The
kt-dependence of the correlation lengths as well as the single particle
mt-spectra will be compared to model calculations. The rapidity dependence is
analysed in a range of 2.5 units of rapidity starting at the center of mass
rapidity at each beam energy. The correlation lengths measured in the
longitudinally comoving system show only a weak dependence on rapidity.


title:
Polarization transfer in the d(epol,e' ppol)n reaction up to Q^2=1.61
  (GeV/c)^2

abstract:
  The recoil proton polarization was measured in the d(epol,e' ppol)n reaction
in Hall A of the Thomas Jefferson National Accelerator Facility (JLab). The
electron kinematics were centered on the quasielastic peak (x_{Bj}~1) and
included three values of the squared four-momentum transfer, Q^2=0.43, 1.00 and
1.61 (GeV/c)^2. For Q^2=0.43 and 1.61 (GeV/c)^2, the missing momentum, p_m, was
centered at zero while for Q^2=1.00 (GeV/c)^2 two values of p_m were chosen: 0
and 174 MeV/c. At low p_m, the Q^2 dependence of the longitudinal polarization,
P_z', is not well described by a state-of-the-art calculation. Further, at
higher p_m, a 3.5 sigma discrepancy was observed in the transverse
polarization, P_x'. Understanding the origin of these discrepancies is
important in order to confidently extract the neutron electric form factor from
the analogous d(epol,e' npol)p experiment.


title:
Systematics of Global Observables in Cu+Cu and Au+Au Collisions at RHIC
  Energies

abstract:
  Charged particles produced in Cu+Cu collisions at \sqrt{s_{NN}} = 200 and
62.4 GeV have been measured in the PHOBOS experiment at RHIC. The comparison of
the results for Cu+Cu and Au+Au for the most central collisions at the same
energy reveals that the particle density per nucleon participant pair and the
extended longitudinal scaling behavior are similar in both systems. This
implies that for the most central events in symmetric nucleus-nucleus
collisions the particle density per nucleon participant pair does not depend on
the size of the two colliding nuclei but only on the collision energy. Also the
extended longitudinal scaling seems independent of the colliding energy and
species for central collisions. In addition, there is an overall factorization
of dN/dEta shapes as a function of collision centrality between Au+Au and Cu+Cu
collisions at the same energy.


title:
Variation with mass of $\boldmath{B(E3; 0_1^+ \to 3_1^-)}$ transition
  rates in $A=124-134$ even-mass xenon nuclei

abstract:
  $B(E3; 0_1^+ \to 3_1^-)$ transition matrix elements have been measured for
even-mass $^{124-134}$Xe nuclei using sub-barrier Coulomb excitation in inverse
kinematics. The trends in energy $E(3^-)$ and $B(E3; 0_1^+ \to 3_1^-)$
excitation strengths are well reproduced using phenomenological models based on
a strong coupling picture with a soft quadrupole mode and an increasing
occupation of the intruder $h_{11/2}$ orbital.


title: Half-Life of $^{14}$O

abstract:
  We have measured the half-life of $^{14}$O, a superallowed $(0^{+} \to
0^{+})$ $\beta$ decay isotope. The $^{14}$O was produced by the
$^{12}$C($^{3}$He,n)$^{14}$O reaction using a carbon aerogel target. A
low-energy ion beam of $^{14}$O was mass separated and implanted in a thin
beryllium foil. The beta particles were counted with plastic scintillator
detectors. We find $t_{1/2} = 70.696\pm 0.052$ s. This result is $1.5\sigma$
higher than an average value from six earlier experiments, but agrees more
closely with the most recent previous measurement.


title: Coincidence Measurement of the Nonmesonic Weak Decay of ^{12}_{Lambda}C

abstract:
  We have measured the angular correlation of the pair nucleons np and nn
emitted from the nonmesonic weak decay (NMWD) of ^{12}_{Lambda}C produced via
the (pi^+,K^+) reaction in coincidence measurement. The Lambda p -> np and
Lambda n -> nn modes were clearly identified by measuring the back-to-back
correlation of the emitted nucleon pairs which is the characteristic of
two-body kinematics. From the measured nucleon pair numbers N_{nn} and N_{np},
the ratio Gamma_n/Gamma_p of the partial decay widths Gamma_n(Lambda n -> nn)
and Gamma_p(Lambda p -> np) of ^{12}_{Lambda}C was extracted to be
0.51+-0.13(stat) +- 0.05(syst); this result is almost free from the ambiguity
due to the nuclear final state interaction and 3-body decay process, which were
inherent in the previous results. The obtained Gamma_n/Gamma_p ratio of
^{12}_{Lambda}C (p-shell) is close to that of ^5_{Lambda}He (s-shell). The
results are consistent with those of recent theoretical calculations.


title: Extracting the charm cross section from semileptonic decays into muons

abstract:
  We propose a sensitive measurement of the charm total cross-section at RHIC
through muon identification from charm semileptonic decay at low transverse
momentum ($p_T$). This can test the binary-collision scaling ($N_{bin}$)
properties of the charm total cross-section and be used to study whether
heavy-flavor quarks, which are used as a probe, are produced exclusively at the
initial impact in hadron-hadron collisions. The effect of the charm
semileptonic decay form factor on extracting the total charm cross section and
on the shape of the lepton spectra are also discussed in detail. We conclude
that lepton spectra from charmed hadron decays at transverse momentum
$p_T\simeq1.0$ GeV/$c$ are sensitive to the charmed hadron spectrum shape.
Therefore, the interactions of heavy quarks with the medium created in
relativistic heavy-ion collisions, especially the flow effects, can be
extracted from the lepton spectra from charmed hadron decays at low $p_T$.


title:
Systematic comparison of ISOLDE-SC yields with calculated in-target
  production rates

abstract:
  Recently, a series of dedicated inverse-kinematics experiments performed at
GSI, Darmstadt, has brought an important progress in our understanding of
proton and heavy-ion induced reactions at relativistic energies. The nuclear
reaction code ABRABLA that has been developed and benchmarked against the
results of these experiments has been used to calculate nuclide production
cross sections at different energies and with different targets and beams.
These calculations are used to estimate nuclide production rates by protons in
thick targets, taking into account the energy loss and the attenuation of the
proton beam in the target, as well as the low-energy fission induced by the
secondary neutrons. The results are compared to the yields of isotopes of
various elements obtained from different targets at CERN-ISOLDE with 600 MeV
protons, and the overall extraction efficiencies are deduced. The dependence of
these extraction efficiencies on the nuclide half-life is found to follow a
simple pattern in many different cases. A simple function is proposed to
parameterize this behavior in a way that quantifies the essential properties of
the extraction efficiency for the element and the target - ion-source system in
question.


title: Search for Theta+ via pi- p --> K- X reaction near production threshold

abstract:
  We have searched for $\Theta^{+}$ via $\pi^{-}p \to K^{-}X$ reaction using
1.87 and 1.92 GeV/c $\pi^{-}$ beam at the K2 beam line of the KEK 12 GeV Proton
Synchrotron. In the missing mass spectrum at beam momentum of 1.92 GeV/$c$, a
bump has been found at 1530 MeV/$c^{2}$ which is consistent with the mass
reported by several experiments. The statistical significance of this bump,
however, is only 2.5$-2.7\sigma$. Therefore we have derived the upper limit of
$\Theta^{+}$ production cross section via $\pi^{-}p \to K^{-}\Theta^{+}$
reaction which is 4.3$\mu$b at 90% confidence level assuming that $\Theta^{+}$
is produced isotropically in the center of mass system.


title:
Identified hadron spectra at large transverse momentum in p+p and d+Au
  collisions at \sqrts_NN = 200 GeV

abstract:
  We present the transverse momentum (pT) spectra for identified charged pions,
protons and anti-protons from p+p and d+Au collisions at \sqrts_NN = 200 GeV.
The spectra are measured around midrapidity (|y| < 0.5) over the range of 0.3 <
pT < 10 GeV/c with particle identification from the ionization energy loss and
its relativistic rise in the Time Projection Chamber and Time-of-Flight in
STAR. The charged pion and proton+anti-proton spectra at high pT in p+p and
d+Au collisions are in good agreement with a phenomenological model (EPOS) and
with the next-to-leading order perturbative quantum chromodynamic (NLO pQCD)
calculations with a specific fragmentation scheme and factorization scale. We
found that all proton, anti-proton and charged pion spectra in p+p collisions
follow xT-scalings for the momentum range where particle production is
dominated by hard processes (pT > 2 GeV/c). The nuclear modification factor
around midrapidity are found to be greater than unity for charged pions and to
be even larger for protons at 2 < pT < 5 GeV/c.


title:
Towards Searching for a Mixed Phase of Strongly Interacting QCD Matter
  at the JINR Nuclotron

abstract:
  Available experimental data in respect to a possible formation of a strongly
interacting mixed phase are outlined. A physical program is formulated for new
facilities being opend in Dubna for acceleration of heavy ions with an energy
up to 5 AGeV.


title:
Precision Measurements of d(d,p)t and d(d,n)^3He Total Cross Sections at
  Big-Bang Nucleosynthesis Energies

abstract:
  Recent Wilkinson Microwave Anisotropy Probe (WMAP) measurements have
determined the baryon density of the Universe $\Omega_b$ with a precision of
about 4%. With $\Omega_b$ tightly constrained, comparisons of Big Bang
Nucleosynthesis (BBN) abundance predictions to primordial abundance
observations can be made and used to test BBN models and/or to further
constrain abundances of isotopes with weak observational limits. To push the
limits and improve constraints on BBN models, uncertainties in key nuclear
reaction rates must be minimized. To this end, we made new precise measurements
of the d(d,p)t and d(d,n)^3He total cross sections at lab energies from 110 keV
to 650 keV.
  A complete fit was performed in energy and angle to both angular distribution
and normalization data for both reactions simultaneously. By including
parameters for experimental variables in the fit, error correlations between
detectors, reactions, and reaction energies were accurately tabulated by
computational methods. With uncertainties around 2% +/- 1% scale error, these
new measurements significantly improve on the existing data set. At relevant
temperatures, using the data of the present work, both reaction rates are found
to be about 7% higher than those in the widely used Nuclear Astrophysics
Compilation of Reaction Rates (NACRE). These data will thus lead not only to
reduced uncertainties, but also to modifications in the BBN abundance
predictions.


title: Quark Matter 2005: Experimental Conference Summary

abstract:
  Highlights of the experimental results presented at the Quark Matter 2005
Conference in Budapest (Hungary) are reviewed and open issues are discussed.