title:
Determination of quadrupole strengths in the gamma*p-->Delta(1232)
  transition at Q2= 0.20 (GeV/c)2

abstract:
  We report new precise p$(\vec{e},e^\prime p)\pi^0$ measurements at the peak
of the $\Delta^{+}(1232)$ resonance at $Q^2=\unit[0.20](GeV/c)^2$ performed at
the Mainz Microtron (MAMI). The new data are sensitive to both the electric
quadrupole ($E2$) and the coulomb quadrupole ($C2$) amplitudes of the $\gamma^*
N\to\Delta$ transition. They yield precise quadrupole to dipole amplitude
ratios CMR $= (-5.09 \pm 0.28_{stat+sys}\pm 0.30_{model})%$ and EMR $= (-1.96
\pm 0.68_{stat+sys} \pm 0.41_{model})%$ for $M^{3/2}_{1+} = (39.57 \pm
0.75_{stat+sys}\pm 0.40_{model})(10^{-3}/m_{\pi^+})$. The new results are in
disagreement with Constituent Quark Model predictions and in qualitative
agreement with models that account for mesonic contributions, including recent
Lattice calculations. They thus give further credence to the conjecture of
deformation in hadronic systems favoring the attribution of the origin of
deformation to the dominance of mesonic effects.


title:
First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon
  Photoproduction

abstract:
  Spin transfer from circularly polarized real photons to recoiling hyperons
has been measured for the reactions $\vec\gamma + p \to K^+ + \vec\Lambda$ and
$\vec\gamma + p \to K^+ + \vec\Sigma^0$. The data were obtained using the CLAS
detector at Jefferson Lab for center-of-mass energies $W$ between 1.6 and 2.53
GeV, and for $-0.85<\cos\theta_{K^+}^{c.m.}< +0.95$. For the $\Lambda$, the
polarization transfer coefficient along the photon momentum axis, $C_z$, was
found to be near unity for a wide range of energy and kaon production angles.
The associated transverse polarization coefficient, $C_x$, is smaller than
$C_z$ by a roughly constant difference of unity. Most significantly, the {\it
total} $\Lambda$ polarization vector, including the induced polarization $P$,
has magnitude consistent with unity at all measured energies and production
angles when the beam is fully polarized. For the $\Sigma^0$ this simple
phenomenology does not hold. All existing hadrodynamic models are in poor
agreement with these results.


title: Polarization of Hyperons in Elementary Photoproduction

abstract:
  Recent measurements using the CLAS detector at Jefferson Lab of the reactions
$\vec\gamma + p \to K^+ + \vec\Lambda$ and $\vec\gamma + p \to K^+ +
\vec\Sigma^0$ have been used to extract the spin transfer coefficients $C_x$
and $C_z$ for the first time. These observables quantify the degree of the
photon circular polarization that is transferred to the recoiling hyperons in
the scattering plane. The unexpected result is that $\Lambda$ hyperons are
produced ``100% polarized'' as seen when combining $C_x$ and $C_z$ with the
induced transverse polarization, $P$. Furthermore, $C_x$ and $C_z$ seem to be
linearly related. This paper discusses the experimental results and offers a
hypothesis which can explain these observations. We show how the produced
strange quark can be subject to a pure spin-orbit type of interaction which
preserves its state of polarization throughout the hadronization process.


title:
Evidence for particle-hole excitations in the triaxial strongly-deformed
  well of ^{163}Tm

abstract:
  Two interacting, strongly-deformed triaxial (TSD) bands have been identified
in the Z = 69 nucleus ^{163}Tm. This is the first time that interacting TSD
bands have been observed in an element other than the Z = 71 Lu nuclei, where
wobbling bands have been previously identified. The observed TSD bands in
^{163}Tm appear to be associated with particle-hole excitations, rather than
wobbling. Tilted-Axis Cranking (TAC) calculations reproduce all experimental
observables of these bands reasonably well and also provide an explanation for
the presence of wobbling bands in the Lu nuclei, and their absence in the Tm
isotopes.


title:
Low energy upscattering of UCN in interaction with the surface of solid
  state

abstract:
  In connection with the problem of anomalous losses of ultracold neutrons
(UCN) in the storage in the material traps the measurements of quasi-elastic
scattering of UCN in collisions with trap surface have been carried out. It was
observed that the probability of quasi-elastic scattering of UCN from energy
interval 0-77 neV to 90-200 neV is (2.2+/-0.2)*10^-8 per collision therefore
the process of quasi-elastic scattering can not explain the effect of anomalous
losses which is on the level 3*10^-5.


title: Neutron beta-decay, Standard Model and cosmology

abstract:
  The precise value of the neutron lifetime is of fundamental importance to
particle physics and cosmology. The neutron lifetime recently obtained, 878.5
+/- 0.7stat +/- 0.3sys s, is the most accurate one to date. The new result for
the neutron lifetime differs from the world average value by 6.5 standard
deviations. The impact of the new result on testing of Standard Model and on
data analysis for the primordial nucleosynthesis model is scrutinized.


title: Low-Energy Nuclear Astrophysics - the Fascinating Region of A=7

abstract:
  We discuss results and future plans for low-energy reactions that play an
important role in current nuclear astrophysics research and that happen to
concentrate around the region of A=7. The 7Be(p,gamma)8B and the
3He(4He,gamma)7Be reactions are crucial for understanding the solar-neutrino
oscillations phenomenon and the latter one plays a central role in the issue of
cosmic 7Li abundance and Big-Bang Nucleosynthesis. We also present results
regarding the host dependence of the half life of the electron-capture 7Be
radio-nuclide.


title: Recent Results from RHIC & Some Lessons for Cosmic-Ray Physicists

abstract:
  The Relativistic Heavy Ion Collider (RHIC) studies nuclear matter under a
variety of conditions. Cold nuclear matter is probed with deuteron-gold
collisions, while hot nuclear matter(possibly a quark-gluon plasma (QGP)) is
created in heavy-ion collisions. The distribution of spin in polarized nucleons
is measured with polarized proton collisions, and photoproduction is studied
using the photons that accompany heavy nuclei.
  The deuteron-gold data shows less forward particle production than would be
expected from a superposition of $pp$ collisions, as expected due to
saturation/shadowing. Particle production in $AA$ collisions is well described
by a model of an expanding fireball in thermal equilibrium. Strong hydrodynamic
flow and jet quenching shows that the the produced matter interacts very
strongly. These phenomena are consistent with new non-perturbative interactions
near the transition temperature to the QGP.
  This writeup will discuss these results, and their implications for
cosmic-ray physicists.


title:
On the absence of appreciable half-life changes in alpha emitters cooled
  in metals to 1 Kelvin and below

abstract:
  The recent suggestion that dramatic changes may occur in the lifetime of
alpha and beta decay when the activity, in a pure metal host, is cooled to a
few Kelvin, is examined in the light of published low temperature nuclear
orientation (LTNO) experiments, with emphasis here on alpha decay. In LTNO
observations are made of the anisotropy of radioactive emissions with respect
to an axis of orientation. Correction of data for decay of metallic samples
held at temperatures at and below 1 Kelvin for periods of days and longer has
been a routine element of LTNO experiments for many years. No evidence for any
change of half life on cooling, with an upper level of less than 1%, has been
found, in striking contrast to the predicted changes, for alpha decay, of
several orders of magnitude. The proposal that such dramatic changes might
alleviate problems of disposal of long-lived radioactive waste is shown to be
unrealistic.


title:
Spallation Residues in the Reaction 56Fe + p at 0.3, 0.5, 0.75, 1.0 and
  1.5 A GeV

abstract:
  The spallation residues produced in the bombardment of 56}Fe at 1.5, 1.0,
0.75, 0.5 and 0.3 A GeV on a liquid-hydrogen target have been measured using
the reverse kinematics technique and the Fragment Separator at GSI (Darmstadt).
This technique has permitted the full identification in charge and mass of all
isotopes produced with cross-sections larger than 10^{-2} mb down to Z=8. Their
individual production cross-sections and recoil velocities at the five energies
are presented. Production cross-sections are compared to previously existing
data and to empirical parametric formulas, often used in cosmic-ray
astrophysics. The experimental data are also extensively compared to different
combinations of intra-nuclear cascade and de-excitation models. It is shown
that the yields of the lightest isotopes cannot be accounted for by standard
evaporation models. The GEMINI model, which includes an asymmetric fission
decay mode, gives an overall good agreement with the data. These experimental
data can be directly used for the estimation of composition modifications and
damages in materials containing iron in spallation sources. They are also
useful for improving high precision cosmic-ray measurements.


title:
Elastic Scattering and Total Reaction Cross Section for the 6He + 27Al
  System

abstract:
  The elastic scattering of the radioactive halo nucleus 6He on 27Al target was
measured at four energies close to the Coulomb barrier using the RIBRAS
(Radioactive Ion Beams in Brazil) facility. The Sao Paulo Potential(SPP) was
used and its diffuseness and imaginary strength were adjusted to fit the
elastic scattering angular distributions. Reaction cross-sections were
extracted from the optical model fits. The reduced reaction cross-sections of
6He on 27Al are similar to those for stable, weakly bound projectiles as
{6,7}Li, 9Be and larger than stable, tightly bound projectile as 16O on 27Al.


title: Precision Measurement of the Decay Rate of 7Be in Host Materials

abstract:
  A controlled and precise determination of the cross-sections of the fusion
reactions 7Be(p,gamma)8B and 3He(4He,gamma)7Be, which play an important role in
determining the solar neutrino flux, necessitates the knowledge of a precise
value of the electron-capture half-life of 7Be. This half-life may depend on
the material hosting the 7Be atoms via small modifications of the electron
density around the 7Be nucleus. In this brief communication we report on the
measurement of 7Be implanted in four materials: copper, aluminum, sapphire and
PVC. The four results are consistent with a null host dependence within two
standard deviations and their weighted average of 53.236(39)d agrees very well
with the adopted value in the literature, 53.22(6)d. The present results may
exhibit a slight (0.22%) increase of the half-life at room temperature for
metals compared to insulators that requires further studies.


title:
Possible Systematic Effects in Fomblin Coated Storage Cell Neutron
  Lifetime Measurements

abstract:
  A new neutron lifetime experiment employing frozen Fomblin has produced a
result in significant disagreement with previous experiments that used liquid
Fomblin near room temperature. This new experiment is subject to very few
corrections, so the source of the discrepancy is a mystery. Here we
theoretically investigate several possible systematic effects for
near-room-temperature storage experiments. By considering the combined effect
of gravity with the usual ultracold neutron losses together with surface wave
scattering loss and ultracold spectral evoltuion, a correction to a previous
neutron lifetime experiment is found to be insignificantly small.


title: Vertex Reconstruction Using a Single Layer Silicon Detector

abstract:
  Typical vertex finding algorithms use reconstructed tracks, registered in a
multi-layer detector, which directly point to the common point of origin. A
detector with a single layer of silicon sensors registers the passage of
primary particles only in one place. Nevertheless, the information available
from these hits can also be used to estimate the vertex position, when the
geometrical properties of silicon sensors and the measured ionization energy
losses of the particles are fully exploited. In this paper the algorithm used
for this purpose in the PHOBOS experiment is described. The vertex
reconstruction performance is studied using simulations and compared with
results obtained from real data. The very large acceptance of a single-layered
multiplicity detector permits vertex reconstruction for low multiplicity events
where other methods, using small acceptance subdetectors, fail because of
insufficient number of registered primary tracks.


title: Polarization and relaxation of radon

abstract:
  Investigations of the polarization and relaxation of $^{209}$Rn by spin
exchange with laser optically pumped rubidium are reported. On the order of one
million atoms per shot were collected in coated and uncoated glass cells.
Gamma-ray anisotropies were measured as a signal of the alignment (second order
moment of the polarization) resulting from the combination of polarization and
quadrupole relaxation at the cell walls. The temperature dependence over the
range 130$^\circ$C to 220$^\circ$C shows the anisotropies increasing with
increasing temperature as the ratio of the spin exchange polarization rate to
the wall relaxation rate increases faster than the rubidium polarization
decreases. Polarization relaxation rates for coated and uncoated cells are
presented. In addition, improved limits on the multipole mixing ratios of some
of the main gamma-ray transitions have been extracted. These results are
promising for electric dipole moment measurements of octupole-deformed
$^{223}$Rn and other isotopes, provided sufficient quantities of the rare
isotopes can be produced.


title: A new SPS programme

abstract:
  A new experiemntal program to study hadron production in hadron-nucleus and
nucleus-nucleus collisions at the CERN SPS has been recently proposed by the
NA49-future collaboration. The physics goals of the program are: (i) search for
the critical point of strongly interacting matter and a study of the properties
of the onset of deconfinemnt in nucleus-nucleus collisions, (ii) measurements
of correlations, fluctuations and hadron spectra at high transverse momentum in
proton-nucleus collisions needed as for better understanding of nucleus-nucleus
results, (iii) measurements of hadron production in hadron-nucleus interactions
needed for neutrino (T2K) and cosmic-ray (Pierre Auger Observatory and KASCADE)
expriments. The physics of the nucleus-nucleus program is reviewed in this
presentation.


title: Onset of Deconfinement in Pb+Pb Collisions at the Cern SPS

abstract:
  The NA49 fixed-target experiment studied high energy-density matter produced
in nucleus-nucleus reactions at the CERN SPS. In central Pb+Pb collisions at
158A GeV the energy density at the early stage substantially exceeds the
threshold for quark deconfinement predicted by lattice QCD. The produced matter
shows strong transverse and longitudinal flow. Ratios of yields of produced
particles are approximately consistent with statistical equilibration. An
energy scan through the SPS range revealed structure in the energy dependence
of pion and kaon yields as well as of the inverse slopes of transverse mass
distributions. These features suggest that a deconfined phase starts to be
produced at around 30A GeV in central Pb+Pb collisions. The analysis of
fluctuations and correlations has not yet provided evidence for the predicted
critical point of QCD.


title: Study of the 3He-eta system in d-p collisions

abstract:
  We have measured excitation functions for the d+p->3He+X, (X=pi0, eta)
channels near the eta production threshold. The data were taken during a slow
ramping of the COSY internal deuteron beam scattered on a proton target. The
excitation function for the reaction d+p->3He+pi0 does not show any structure
which could originate from the decay of 3He-eta bound state. We measured also
the threshold excitation curve for the d+p->3He+X process, however, contrary to
the SATURNE results, we observe no cusp near the eta threshold.


title:
Centrality and system size dependence of multiplicity fluctuations in
  nuclear collisions at 158 AGeV

abstract:
  The centrality and system size dependence of multiplicity fluctuations of
charged particles produced in nuclear collisions at $158 A$ GeV was studied by
the NA49 collaboration. Centrality selected Pb+Pb collisions, semi-central C+C
and Si+Si collisions as well as inelastic p+p interactions were analyzed. The
number of projectile participants determined on an event-by-event basis was
used to characterize the collision centrality. The scaled variance of the
multiplicity distribution obtained in the forward rapidity region ($1.1
<y_{c.m.} <2.6$) shows a significant increase towards peripheral collisions.
The results are similar for negatively and positively charged particles and
about 50% larger for all charged particles. String-hadronic models of nuclear
reactions without the fusion process do not reproduce the rise of fluctuations
from central towards peripheral collisions. The measured centrality dependence
can be reproduced in superposition models with the assumption of contributions
from target participants to particle production in the forward hemisphere or in
string models with fusion.


title:
Z=50 shell gap near $^{100}$Sn from intermediate-energy Coulomb
  excitations in even-mass $^{106--112}$Sn isotopes

abstract:
  Rare isotope beams of neutron-deficient $^{106,108,110}$Sn nuclei from the
fragmentation of $^{124}$Xe were employed in an intermediate-energy Coulomb
excitation experiment yielding $B(E2, 0^+_1 \to 2^+_1)$ transition strengths.
The results indicate that these $B(E2,0^+_1 \to 2^+_1)$ values are much larger
than predicted by current state-of-the-art shell model calculations. This
discrepancy can be explained if protons from within the Z = 50 shell are
contributing to the structure of low-energy excited states in this region. Such
contributions imply a breaking of the doubly-magic $^{100}$Sn core in the light
Sn isotopes.


title:
J/psi and psi' production and their normal nuclear absorption in
  proton-nucleus collisions at 400 GeV

abstract:
  We report a new measurement of J/psi, psi' and Drell-Yan cross-sections, in
the kinematical domain $-0.425<y_{\rm cm}<0.575$ and $-0.5<\cos\theta_{\rm
CS}<0.5$, performed at the CERN-SPS using 400 GeV/c incident protons on Be, Al,
Cu, Ag, W and Pb targets. The dependence of the charmonia production
cross-sections on the size of the target nucleus allows to quantify the
so-called normal nuclear absorption. In the framework of the Glauber model,
this new measurement is combined with results previously obtained with the same
apparatus, under different experimental conditions, and leads to a precise
determination of the J/psi and psi' absorption cross-sections in the
surrounding nuclear matter.


title: psi' production in Pb-Pb collisions at 158 GeV/nucleon

abstract:
  psi' production is studied in Pb-Pb collisions at 158 GeV/c per nucleon
incident momentum. Absolute cross-sections are measured and production rates
are investigated as a function of the centrality of the collision. The results
are compared with those obtained for lighter colliding systems and also for the
J/psi meson produced under identical conditions.


title: Open questions in quarkonium and electromagnetic probes

abstract:
  In my ("not a summary") talk at the Hard Probes 2006 conference, I gave "a
personal and surely biased view on only a few of the many open questions on
quarkonium and electromagnetic probes". Some of the points reported in that
talk are exposed in this paper, having in mind the most important of all the
open questions: do we have, today, from experimental data on electromagnetic
probes and quarkonium production, convincing evidence that shows, beyond
reasonable doubt, the existence of "new physics" in high-energy heavy-ion
collisions?


title:
Evidence for a 'Narrow' Roper Resonance - the Breathing Mode of the
  Nucleon

abstract:
  All the time since its discovery the N$^*$(1440) baryon state, commonly known
as Roper resonance, has been a state with many question marks - despite of its
4-star ranking in the particle data book. One reason is that it does not
produce any explicit resonance-like structures in the observables of $\pi$N or
$\gamma$N reactions. Only in partial wave analyses of $\pi$N scattering data a
clear resonance strcuture gets obvious in the $P_{11}$ partial wave. Very
recent measurements of the J/$\Psi$ decay by the BES collaboration and of the
$pp \to np\pi^+$ reaction at 1.3 GeV by the CELSIUS-WASA collaboration show for
the first time a clear resonance structure in the invariant $n\pi^+$ mass
spectrum for the Roper resonance at M $\approx$ 1360 MeV with a width of about
150 MeV. These values agree very favorably with the pole position results of
recent $\pi$N phase shift analyses. In consequence of this very low-lying pole
postion, which is roughly 100 MeV below the nominal value, the decay properties
have to be reinvestigated. From our two-pion production data we see that the
decay mainly proceeds via N$^* \to $N$\sigma$, i.e. a monopole transition as
expected for the breathing mode of the nucleon.


title:
Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect -
  Approaching a Puzzleby exclusive and Kinematically complete Measurements

abstract:
  The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant
mass spectrum - is known from inclusive measurements of two-pion production in
nuclear collisions, where it always showed up, if the participating nucleons
fused to a bound nuclear system in the final state. The first exclusive
measurements on the ABC effect have been carried out very recently at
CELSIUS-WASA for the fusion reactions leading to d, $^3$He and $^4$He nuclei in
the final state. The data analyzed so far for the fusion processes to d and
$^3$He reveal this effect to be a $\sigma$ channel phenomenon associated with
the formation of a strongly attractive $\Delta\Delta$ system. The data for the
strictly isospin-selective double-pionic fusion to $^4$He, where we expect the
largest effect, are currently still analyzed. All inclusive data on this system
are well described by our model, too. This case also constitutes the heaviest
nuclear system, where exclusive measurements of double-pionic fusion can be
carried out with present-day instruments. Surprisingly, the $pp \to
pp\pi^0\pi^0$ reaction in the $\Delta\Delta$ region is observed to also show a
ABC-like low-$\pi\pi$ mass enhancement, a phenomenon, which deserves special
attention.


title: Linear polarization sensitivity of SeGA detectors

abstract:
  Parity is a key observable in nuclear spectroscopy. Linear polarization
measurements of $\gamma$-rays are a probe to access the parities of energy
levels. Utilizing the segmentation of detectors in the Segmented Germanium
Array (SeGA) at the NSCL and analyzing the positions of interaction therein
allows the detectors to be used as Compton polarimeters. Unlike other segmented
detectors, SeGA detectors are irradiated from the side to utilize the
transversal segmentation for better Doppler corrections. Sensitivity in such an
orientation has previously been untested. A linear polarization sensitivity $Q
\approx 0.14$ has been measured in the 350-keV energy range for SeGA detectors
using $\alpha$-$\gamma$ correlations from a \nuc{249}{Cf} source.


title: Light Ions Response of Silicon Carbide Detectors

abstract:
  Silicon carbide (SiC) Schottky diodes 21 mum thick with small surfaces and
high N-dopant concentration have been used to detect alpha particles and low
energy light ions. In particular 12C and 16O beams at incident energies between
5 and 18 MeV were used. The diode active-region depletion-thickness, the
linearity of the response, energy resolution and signal rise-time were measured
for different values of the applied reverse bias. Moreover the radiation damage
on SiC diodes irradiated with 53 MeV 16O beam has been explored. The data show
that SiC material is radiation harder than silicon but at least one order of
magnitude less hard than epitaxial silicon diodes. An inversion in the signal
was found at a fluence of 10^15 ions/cm^2.


title: Jet Correlations from PHENIX: Low-pT to High-pT

abstract:
  PHENIX has measured many different two-particle azimuthal correlations in
several different colliding systems, beam energies, $p_{T}$ windows, etc. The
initial striking results from the first full energy Au+Au run have been
confirmed, i.e. the observation of away-side suppression at intermediate
$p_{T}$ and the shape modification at low $p_{T}$. With the new high-statistics
data these results have been extended to further explore the physics resulting
in these modified correlations. In this contribution we present a wide variety
of correlation results at high-$p_{T}$ ($>$ 5 GeV/c) and at low $p_{T}$ ($\sim$
1-4 GeV/c). We discuss the implication of these data on energy loss models and
on the possibilities of determining medium properties from these correlations.


title:
Absolute Polarization Measurements at RHIC in the Coulomb Nuclear
  Interference Region

abstract:
  The Relativistic Heavy Ion Collider at Brookhaven National Laboratory
provides polarized proton beams for the investigation of the nucleon spin
structure. For polarimetry, carbon-proton and proton-proton scattering is used
in the Coulomb nuclear interference region at small momentum transfer ($-t$).
Fast polarization measurements of each beam are carried out with carbon fiber
targets at several times during an accelerator store. A polarized hydrogen gas
jet target is needed for absolute normalization over multiple stores, while the
target polarization is constantly monitored in a Breit-Rabi polarimeter. In
2005, the jet polarimeter has been used with both RHIC beams. We present
results from the jet polarimeter including a detailed analysis of background
contributions to asymmetries and to the beam polarization.


title:
Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$
  GeV

abstract:
  Please note that after these results were reported at Quark Matter 2006 and
posted on the preprint server it was found that what is reported here as
\textit{elliptic flow fluctuations}, should rather be taken as an upper limit
on the fluctuations. Further analysis has shown that fitting the multiplicity
dependence of the q-distribution does not enable one to disentangle non-flow
and fluctuations. The data from the q-vector distrubution does not, therefore,
exclude the case of zero fluctuations. The remainder of these proceedings we
leave as they were originally reported.


title: Experiments in Fundamental Neutron Physics

abstract:
  Experiments using slow neutrons address a growing range of scientific issues
spanning nuclear physics, particle physics, astrophysics, and cosmology. The
field of fundamental physics using neutrons has experienced a significant
increase in activity over the last two decades. This review summarizes some of
the recent developments in the field and outlines some of the prospects for
future research.


title: Results on Deeply Virtual Compton Scattering at Jefferson Lab

abstract:
  After about 10 years of growing interest for Generalized Parton Distributions
come the first results from dedicated experiments, using the golden Deeply
Virtual Compton Scattering process. After a short introduction, we will explain
the experimental methodology andshow results of the Hall A E00-110 experiment,
which aimed at measuring helicity-dependent photon electroproduction cross
sections. We will enphasize how this experiment provided the first stringent
tests of the scaling property of this process, allowing for the first time a
model-independent extraction of a linear combination of Generalized Parton
Distributions. We will also describe the Hall B E01-113 experiment which
measured the photon electroproduction beam spin asymmetry over a wide
kinematical range. The summary will include an outlook on the next generation
of experiments which are already planned at Jefferson Lab at 6 GeV, but also
after the planned 12 GeV upgrade.


title:
Selective population and neutron decay of the first excited state of
  semi-magic O-23

abstract:
  We have observed an excited state in the neutron-rich semi-magic nucleus O-23
for the first time. No such states have been found in previous searches using
gamma-ray spectroscopy. The observation of a resonance in n-fragment
coincidence measurements confirms the speculation in the literature that the
lowest excited state is neutron unbound and establishes positive evidence for a
2.8(1) MeV excitation energy of the first excited state in O-23. The
non-observation of a predicted second excited state is explained assuming
selectivity of inner-shell knockout reactions.


title: Future Spin Physics at JLab; 12 GeV and Beyond

abstract:
  The project to upgrade the CEBAF accelerator at Jefferson Lab to 12 GeV is
presented. Most of the research program supporting that upgrade, will require a
highly polarized beam, as will be illustrated by a few selected examples. To
carry out that research program will require an extensively upgraded
instrumentation in two of the existing experimental halls and the addition of a
fourth hall. The plans for a high-luminosity electron-ion collider are briefly
discussed.


title: Nucleon Form Factor Experiments and the Pion Cloud

abstract:
  The experimental and theoretical status of elastic electron scattering from
the nucleon is reviewed. A wealth of new data of unprecedented precision,
especially at small values of the momentum transfer, in parallel to new
theoretical insights, has allowed sensitive tests of the influence of the
pionic cloud surrounding the nucleon.


title: Nucleon Structure and Generalized Parton Distributions

abstract:
  This paper discusses a selected part of the experimental program dedicated to
the study of Generalized Parton Distributions, a recently introduced concept
which provides a comprehensive framework for investigations of the partonic
structure of the nucleon. Particular emphasis is put on the Deeply Virtual
Compton Scattering program performed at the Jefferson Laboratory. The short and
long term future of this program is also discussed in the context of the
several experimental efforts aiming at a complete and exhaustive mapping of
Generalized Parton Distributions.


title: High-pT strange particle spectra and correlations in STAR

abstract:
  We present results on strange particle production in p+p, d+Au and Au+Au
collisions at $\sqrt{s_{NN}}$ = 200 GeV. We discuss the nuclear modification
factors ($R_{CP}$) and ratios of particle yields in order to investigate the
range of anomalous baryon production.The medium modification of the
fragmentation process is further explored by studying azimuthal correlations at
intermediate-$p_T$ for $K^0_S$, $\Lambda$ and $\bar{\Lambda}$ trigger
particles. The results are compared to fragmentation and recombination models.


title: Strong Deformation Effects in Hot Rotating 46Ti

abstract:
  Exotic-deformation effects in 46Ti nucleus were investigated by analysing the
high-energy gamma-ray and the alpha-particle energy spectra. One of the
experiments was performed using the charged-particle multi-detector array ICARE
together with a large volume (4"x4") BGO detector. The study focused on
simultaneous measurement of light charged particles and gamma-rays in
coincidence with the evaporation residues. The experimental data show a
signature of very large deformations of the compound nucleus in the Jacobi
transition region at the highest spins. These results are compared to data from
previous experiments performed with the HECTOR array coupled to the EUROBALL
array, where it was found that the GDR strength function is highly fragmented,
strongly indicating a presence of nuclei with very large deformation.


title: Bimodal pattern in the fragmentation of Au quasi-projectiles

abstract:
  Signals of bimodality have been investigated in experimental data of
quasi-projectile decay produced in Au+Au collisions at 35 AMeV. This same data
set was already shown to present several signals characteristic of a first
order, liquid-gas-like phase transition. For the present analysis, events are
sorted in bins of transverse energy of light charged particles emitted by the
quasi-target source. A sudden change in the fragmentation pattern is observed
from the distributions of the asymmetry of the two largest fragments, and the
charge of the largest fragment. This latter distribution shows a bimodal
behavior. The interpretation of this signal is discussed.


title:
Double radiative pion capture on hydrogen and deuterium and the
  nucleon's pion cloud

abstract:
  We report measurements of double radiative capture in pionic hydrogen and
pionic deuterium. The measurements were performed with the RMC spectrometer at
the TRIUMF cyclotron by recording photon pairs from pion stops in liquid
hydrogen and deuterium targets. We obtained absolute branching ratios of $(3.02
\pm 0.27 (stat.) \pm 0.31 (syst.)) \times 10^{-5}$ for hydrogen and $(1.42 \pm
^{0.09}_{0.12} (stat.) \pm 0.11 (syst.)) \times 10^{-5}$ for deuterium, and
relative branching ratios of double radiative capture to single radiative
capture of $(7.68 \pm 0.69(stat.) \pm 0.79(syst.)) \times 10^{-5}$ for hydrogen
and $(5.44 \pm^{0.34}_{0.46}(stat.) \pm 0.42(syst.)) \times 10^{-5}$ for
deuterium. For hydrogen, the measured branching ratio and photon energy-angle
distributions are in fair agreement with a reaction mechanism involving the
annihilation of the incident $\pi^-$ on the $\pi^+$ cloud of the target proton.
For deuterium, the measured branching ratio and energy-angle distributions are
qualitatively consistent with simple arguments for the expected role of the
spectator neutron. A comparison between our hydrogen and deuterium data and
earlier beryllium and carbon data reveals substantial changes in the relative
branching ratios and the energy-angle distributions and is in agreement with
the expected evolution of the reaction dynamics from an annihilation process in
S-state capture to a bremsstrahlung process in P-state capture. Lastly, we
comment on the relevance of the double radiative process to the investigation
of the charged pion polarizability and the in-medium pion field.


title: Inclusive pion double charge exchange in light p-shell nuclei

abstract:
  We report the results of a series of measurements of the differential cross
sections for inclusive pion double charge exchange in 6,7Li, 9Be, and 12C for
positive and negative incident pions of energies 120, 180, and 240 MeV. The
data are compared with the predictions of an intranuclear cascade model and a
model based on two sequential single charge exchange processes.


title:
Pair correlations in nuclei involved in neutrinoless double beta decay:
  76Ge and 76Se

abstract:
  Precision measurements were carried out to test the similarities between the
ground states of 76Ge and 76Se. The extent to which these two nuclei can be
characterized as consisting of correlated pairs of neutrons in a BCS-like
ground state was studied. The pair removal (p,t) reaction was measured at the
far forward angle of 3 degrees. The relative cross sections are consistent (at
the 5% level) with the description of these nuclei in terms of a correlated
pairing state outside the N=28 closed shells with no pairing vibrations. Data
were also obtained for 74Ge and 78Se.


title:
Characterization of the first true coaxial 18-fold segmented n-type
  prototype detector for the GERDA project

abstract:
  The first true coaxial 18-fold segmented n-type HPGe prototype detector
produced by Canberra-France for the GERDA neutrinoless double beta-decay
project was tested both at Canberra-France and at the Max-Planck-Institut fuer
Physik in Munich. The main characteristics of the detector are given and
measurements concerning detector properties are described. A novel method to
establish contacts between the crystal and a Kapton cable is presented.


title:
Identification of photons in double beta-decay experiments using
  segmented germanium detectors - studies with a GERDA Phase II prototype
  detector

abstract:
  The sensitivity of experiments searching for neutrinoless double beta-decay
of germanium was so far limited by the background induced by external
gamma-radiation. Segmented germanium detectors can be used to identify photons
and thus reduce this background component.
  The GERmanium Detector Array, GERDA, will use highly segmented germanium
detectors in its second phase. The identification of photonic events is
investigated using a prototype detector. The results are compared with Monte
Carlo data.


title:
Isospin dependence of relative yields of $K^+$ and $K^0$ mesons at 1.528
  AGeV

abstract:
  Results on $K^+$ and $K^0$ meson production in $^{96}_{44}$Ru +
$^{96}_{44}$Ru and $^{96}_{40}$Zr + $^{96}_{40}$Zr collisions at a beam kinetic
energy of 1.528$A$ GeV, measured with the FOPI detector at GSI-Darmstadt, are
investigated as a possible probe of isospin effects in high density nuclear
matter. The measured double ratio ($K^+/K^0$)$_{Ru}$/($K^+/K^0$)$_{Zr}$ is
compared to the predictions of a thermal model and a Relativistic Mean Field
transport model using two different collision scenarios and under different
assumptions on the stiffness of the symmetry energy. We find a good agreement
with the thermal model prediction and the assumption of a soft symmetry energy
for infinite nuclear matter while more realistic transport simulations of the
collisions show a similar agreement with the data but also exhibit a reduced
sensitivity to the symmetry term.


title:
The WITCH Experiment: towards weak interactions studies. Status and
  prospects

abstract:
  Primary goal of the WITCH experiment is to test the Standard Model for a
possible ad-mixture of a scalar or tensor type interaction in beta-decay. This
information will be inferred from the shape of the recoil energy spectrum. The
experimental set-up was completed and is under intensive commissioning at
ISOLDE (CERN). It combines a Penning trap to store the ions and a retardation
spectrometer to probe the recoil ion energy. A brief overview of the WITCH
set-up and the results of commissioning tests performed until now are
presented. Finally, perspectives of the physics program are reviewed.


title:
Spectator detection for the measurement of proton neutron interactions
  at ANKE

abstract:
  A telescope of three silicon detectors has been installed close to the
internal target position of the ANKE spectrometer, which is situated inside the
ultra-high vacuum of the COSY-Juelich light-ion storage ring. The detection and
identification of slow protons and deuterons emerging from a deuterium
cluster-jet target thus becomes feasible. A good measurement of the energy and
angle of such a spectator proton (p_sp) allows one to identify a reaction as
having taken place on the neutron in the target and then to determine the
kinematical variables of the ion-neutron system on an event-by-event basis over
a range of c.m. energies.
  The system has been successfully tested under laboratory conditions. By
measuring the spectator proton in the p d to p_sp d pi^0 reaction in
coincidence with a fast deuteron in the ANKE Forward Detector, values of the p
n to d pi^0 total cross-section have been deduced. Further applications of the
telescope include the determination of the luminosity and beam polarisation
which are required for several experiments.


title: Differential cross section for neutron-proton bremsstrahlung

abstract:
  The neutron-proton bremsstrahlung process $(np \to np\gamma)$ is known to be
sensitive to meson exchange currents in the nucleon-nucleon interaction. The
triply differential cross section for this reaction has been measured for the
first time at the Los Alamos Neutron Science Center, using an intense, pulsed
beam of up to 700 MeV neutrons to bombard a liquid hydrogen target. Scattered
neutrons were observed at six angles between 12$^\circ$ and 32$^\circ$, and the
recoil protons were observed in coincidence at 12$^\circ$, 20$^\circ$, and
28$^\circ$ on the opposite side of the beam. Measurement of the neutron and
proton energies at known angles allows full kinematic reconstruction of each
event. The data are compared with predictions of two theoretical calculations,
based on relativistic soft-photon and non-relativistic potential models.


title:
Mass, quark-number, and $\sqrt{s_{NN}}$ dependence of the second and
  fourth flow harmonics in ultra-relativistic nucleus-nucleus collisions

abstract:
  We present STAR measurements of the azimuthal anisotropy parameter $v_2$ for
pions, kaons, protons, $\Lambda$, $\bar{\Lambda}$, $\Xi+\bar{\Xi}$, and $\Omega
+ \bar{\Omega}$, along with $v_4$ for pions, kaons, protons, and $\Lambda +
\bar{\Lambda}$ at mid-rapidity for Au+Au collisions at $\sqrt{s_{_{NN}}}=62.4$
and 200 GeV. The $v_2(p_T)$ values for all hadron species at 62.4 GeV are
similar to those observed in 130 and 200 GeV collisions. For observed kinematic
ranges, $v_2$ values at 62.4, 130, and 200 GeV are as little as 10%--15% larger
than those in Pb+Pb collisions at $\sqrt{s_{_{NN}}}=17.3$ GeV. At intermediate
transverse momentum ($p_T$ from 1.5--5 GeV/c), the 62.4 GeV $v_2(p_T)$ and
$v_4(p_T)$ values are consistent with the quark-number scaling first observed
at 200 GeV. A four-particle cumulant analysis is used to assess the non-flow
contributions to pions and protons and some indications are found for a smaller
non-flow contribution to protons than pions. Baryon $v_2$ is larger than
anti-baryon $v_2$ at 62.4 and 200 GeV perhaps indicating either that the
initial spatial net-baryon distribution is anisotropic, that the mechanism
leading to transport of baryon number from beam- to mid-rapidity enhances
$v_2$, or that anti-baryon and baryon annihilation is larger in the in-plane
direction.


title:
Design and Characterization of a Neutron Calibration Facility for the
  Study of sub-keV Nuclear Recoils

abstract:
  As part of an experimental effort to demonstrate sensitivity in a large-mass
detector to the ultra-low energy recoils expected from coherent
neutrino-nucleus elastic scattering, we have designed and built a highly
monochromatic 24 keV neutron beam at the Kansas State University Triga Mark-II
reactor. The beam characteristics were chosen so as to mimic the soft recoil
energies expected from reactor antineutrinos in a variety of targets, allowing
to understand the response of dedicated detector technologies in this yet
unexplored sub-keV recoil range. A full characterization of the beam properties
(intensity, monochromaticity, contaminations, beam profile) is presented,
together with first tests of the calibration setup using proton recoils in
organic scintillator.


title:
Large-Mass Ultra-Low Noise Germanium Detectors: Performance and
  Applications in Neutrino and Astroparticle Physics

abstract:
  A new type of radiation detector, a p-type modified electrode germanium
diode, is presented. The prototype displays, for the first time, a combination
of features (mass, energy threshold and background expectation) required for a
measurement of coherent neutrino-nucleus scattering in a nuclear reactor
experiment. The device hybridizes the mass and energy resolution of a
conventional HPGe coaxial gamma spectrometer with the low electronic noise and
threshold of a small x-ray semiconductor detector, also displaying an intrinsic
ability to distinguish multiple from single-site particle interactions. The
present performance of the prototype and possible further improvements are
discussed, as well as other applications for this new type of device in
neutrino and astroparticle physics (double-beta decay, neutrino magnetic moment
and WIMP searches).


title:
Experimental study of exclusive $^2$H$(e,e^\prime p)n$ reaction
  mechanisms at high $Q^2$

abstract:
  The reaction $^2$H$(e,e^\prime p)n$ has been studied with full kinematic
coverage for photon virtuality $1.75<Q^2<5.5$ GeV$^2$. Comparisons of
experimental data with theory indicate that for very low values of neutron
recoil momentum ($p_n<100$ MeV/c) the neutron is primarily a spectator and the
reaction can be described by the plane-wave impulse approximation. For
$100<p_n<750$ MeV/c proton-neutron rescattering dominates the cross section,
while $\Delta$ production followed by the $N\Delta \to NN$ transition is the
primary contribution at higher momenta.


title:
Production of K+ and of K- Mesons in Heavy-Ion Collisions from 0.6 to
  2.0 AGeV Incident Energy

abstract:
  This paper summarizes the yields and the emission patterns of K+ and of K-
mesons measured in inclusive C+C, Ni+Ni and Au+Au collisions at incident
energies from 0.6 AGeV to 2.0 AGeV using the Kaon Spectrometer KaoS at GSI. For
Ni+Ni collisions at 1.5 and at 1.93 AGeV as well as for Au+Au at 1.5 AGeV
detailed results of the multiplicities, of the inverse slope parameters of the
energy distributions and of the anisotropies in the angular emission patterns
as a function of the collision centrality are presented. When comparing
transport-model calculations to the measured K+ production yields an agreement
is only obtained for a soft nuclear equation of state (compression modulus KN ~
200 MeV). The production of K- mesons at energies around 1 to 2 AGeV is
dominated by the strangeness-exchange reaction K- N <-> pi Y (Y = Lambda,
Sigma) which leads to a coupling between the K- and the K+ yields. However,
both particle species show distinct differences in their emission patterns
suggesting different freeze-out conditions for K+ and for K- mesons.


title: NA60 results on the rho spectral function in In-In collisions

abstract:
  The NA60 experiment at the CERN SPS has studied low-mass muon pairs in 158
AGeV In-In collisions. A strong excess of pairs is observed above the yield
expected from neutral meson decays. After subtraction of the decay sources, the
shape of the resulting mass spectrum is largely consistent with a dominant
contribution from pi+pi- -> rho -> mu+mu- annihilation. The associated rho
spectral function exhibits considerable broadening, but essentially no shift in
mass. The acceptance-corrected pT spectra have a shape atypical for radial
flow. They also significantly depend on mass, pointing to different sources in
different mass regions. Both mass and pT spectra are compared to recent
theoretical predictions.


title:
Clock and Trigger Synchronization between Several Chassis of Digital
  Data Acquisition Modules

abstract:
  In applications with segmented high purity Ge detectors or other detector
arrays with tens or hundreds of channels, where the high development cost and
limited flexibility of application specific integrated circuits outweigh their
benefits of low power and small size, the readout electronics typically consist
of multi-channel data acquisition modules in a common chassis for power, clock
and trigger distribution, and data readout. As arrays become larger and reach
several hundred channels, the readout electronics have to be divided over
several chassis, but still must maintain precise synchronization of clocks and
trigger signals across all channels. This division becomes necessary not only
because of limits given by the instrumentation standards on module size and
chassis slot numbers, but also because data readout times increase when more
modules share the same data bus and because power requirements approach the
limits of readily available power supplies. In this paper, we present a method
for distributing clocks and triggers between 4 PXI chassis containing DGF
Pixie-16 modules with up to 226 acquisition channels per chassis in a data
acquisition system intended to instrument the over 600 channels of the SeGA
detector array at the National Superconducting Cyclotron Laboratory. Our
solution is designed to achieve synchronous acquisition of detector waveforms
from all channels with a jitter of less then 1 ns, and can be extended to a
larger number of chassis if desired.


title: New Measurements of the EMC Effect in Few-Body Nuclei

abstract:
  Measurements of the EMC effect show that the quark distributions in nuclei
are not simply the sum of the quark distributions of the constituent nucleons.
However, interpretation of the EMC effect is limited by the lack of a reliable
baseline calculation of the effects of Fermi motion and nucleon binding. We
present preliminary results from JLab experiment E03-103, a precise measurement
of the EMC effect in few-body and heavy nuclei. These data emphasize the
large-x region, where binding and Fermi motion effects dominate, and thus will
provide much better constraints on the effects of binding. These data will also
allow for comparisons to calculations for few-body nuclei, where the
uncertainty in the nuclear structure is minimized.


title:
Evolution of event-by-event transverse-energy fluctuations over
  collision centrality in RHIC interactions

abstract:
  Preliminary results are presented for two analyses of transverse energy (ET)
production measured with the electromagnetic calorimeters of the Pioneering
High Energy Nuclear Interaction Experiment (PHENIX), in nuclear interactions in
Au+Au heavy-ion collisions created by the Relativistic Heavy Ion Collider
(RHIC), at Brookhaven National Laboratory. Event-by-event ET distributions made
across collision centrality were used in (1) measurements of 200 GeV mean ET,
and (2) measurements of 200 GeV and 62.4 GeV ET distribution fluctuations.
Event centrality was selected in 5% wide bins and each bin represented by a
modeled mean number of participant nucleons.


title: Time-variability of alpha from realistic models of Oklo reactors

abstract:
  We reanalyze Oklo $^{149}$Sm data using realistic models of the natural
nuclear reactors. Disagreements among recent Oklo determinations of the time
evolution of $\alpha$, the electromagnetic fine structure constant, are shown
to be due to different reactor models, which led to different neutron spectra
used in the calculations. We use known Oklo reactor epithermal spectral indices
as criteria for selecting realistic reactor models. Two Oklo reactors, RZ2 and
RZ10, were modeled with MCNP. The resulting neutron spectra were used to
calculate the change in the $^{149}$Sm effective neutron capture cross section
as a function of a possible shift in the energy of the 97.3-meV resonance. We
independently deduce ancient $^{149}$Sm effective cross sections, and use these
values to set limits on the time-variation of $\alpha$. Our study resolves a
contradictory situation with previous Oklo $\alpha$-results. Our suggested $2
\sigma$ bound on a possible time variation of $\alpha$ over two billion years
is stringent: $ -0.24 \times 10^{-7} \le \frac{\Delta \alpha}{\alpha} \le 0.11
\times 10^{-7}$, but model dependent in that it assumes only $\alpha$ has
varied over time.


title:
Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by
  negatively charged hadrons

abstract:
  In this paper we present results on transverse mass spectra and Hanbury-Brown
and Twiss correlation functions of negatively charged hadrons, which are
expected to be mostly negative pions, measured in Pb-Pb collisions at 40 A
GeV/c beam momentum. Based on these data, the collision dynamics and the
space-time extent of the system at the thermal freeze-out are studied over a
centrality range corresponding to the most central 53% of the Pb--Pb inelastic
cross section. Comparisons with freeze-out conditions of strange particles and
HBT results from other experiments are discussed.


title: RHIC Results on J/Psi

abstract:
  Quarkonia ($J/\psi$, $\psi$', $\Upsilon$) production provides a sensitive
probe of gluon distributions and their modification in nuclei; and is a leading
probe of the hot-dense (deconfined) matter created in high-energy collisions of
heavy ions. We will discuss the current understanding of the production process
and of the cold-nuclear-matter effects that modify this production in nuclei in
the context of recent p+p and p(d)+A quarkonia measurements. Then we will
review the latest results for nucleus-nucleus collisions from RHIC, and
together with the baseline results from d+A and p+p collisions, discuss several
alternative explanations for the observed suppressions and future prospects for
distinguishing these different pictures.


title: Direct photons in d+Au collisions at s_(NN)**(1/2)=200GeV with STAR

abstract:
  Results are presented of an ongoing analysis of direct photon production in
s_(NN)=200GeV deuteron-gold collisions with the STAR experiment at RHIC. A
significant excess of direct photons is observed near mid-rapidity 0<y<1 and
found to be consistent with next-to-leading order pQCD calculations including
the contribution from fragmentation photons.


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

abstract:
  The analysis of two-particle azimuthal angular correlations at high
transverse momentum from Pb+Au collisions at 158 AGeV/c at SPS reveals
substantial modifications of the away-side peak as compared to the
distributions from p+p reactions. The data recorded with the CERES
Time-Projection Chamber, which provides excellent tracking efficiency, suggest
that the observed modification of the back-to-back structure implies
significant re-interactions of the scattered partons within the medium. These
findings at top SPS energy show features qualitatively similar to the results
obtained at RHIC from Au+Au collisions at $\sqrt{s} = 200$ GeV/c and Cu+Cu
collisions at $\sqrt{s} = 62$ GeV/c. We present the centrality and charge
dependent conditional di-jet yields for similar transverse momentum windows as
investigated by the RHIC experiments


title: Accuracy of Extracted Multipoles from gamma* N -> Delta Data

abstract:
  This work evaluates the model dependence of the electric and Coulomb
quadrupole amplitudes (E2, C2) in the predominantly M1 (magnetic dipole-quark
spin flip) gamma* N -> Delta transition. Both the model-to-model dependence and
the intrinsic model uncertainties are evaluated and found to be comparable to
each other and no larger than the experimental errors. It is confirmed that the
quadrupole amplitudes have been accurately measured indicating significant
non-zero angular momentum components in the proton and Delta.


title: Glauber Modeling in High Energy Nuclear Collisions

abstract:
  This is a review of the theoretical background, experimental techniques, and
phenomenology of what is called the "Glauber Model" in relativistic heavy ion
physics. This model is used to calculate "geometric" quantities, which are
typically expressed as impact parameter (b), number of participating nucleons
(N_part) and number of binary nucleon-nucleon collisions (N_coll). A brief
history of the original Glauber model is presented, with emphasis on its
development into the purely classical, geometric picture that is used for
present-day data analyses. Distinctions are made between the "optical limit"
and Monte Carlo approaches, which are often used interchangably but have some
essential differences in particular contexts. The methods used by the four RHIC
experiments are compared and contrasted, although the end results are
reassuringly similar for the various geometric observables. Finally, several
important RHIC measurements are highlighted that rely on geometric quantities,
estimated from Glauber calculations, to draw insight from experimental
observables. The status and future of Glauber modeling in the next generation
of heavy ion physics studies is briefly discussed.


title:
Recent results for source function imaging from AGS through CERN SPS to
  RHIC

abstract:
  Recent femtoscopic measurements involving the use of an imaging technique and
a newly developed moment analysis are presented and discussed. We show that
this new paradigm allows robust investigation of reaction dynamics for which
the sound speed $c_s \neq 0$ during an extended hadronization period. Source
functions extracted for charged pions produced in Au+Au and Pb+Pb collisions
show non-Gaussian tails for a broad selection of collision energies. The ratio
of the RMS radii of these source functions in the out and side directions are
found to be greater than 1, suggesting a finite emission time for pions.


title:
Separated Oscillatory Fields for High-Precision Penning Trap Mass
  Spectrometry

abstract:
  Ramsey's method of separated oscillatory fields is applied to the excitation
of the cyclotron motion of short-lived ions in a Penning trap to improve the
precision of their measured mass. The theoretical description of the extracted
ion-cyclotron-resonance line shape is derived out and its correctness
demonstrated experimentally by measuring the mass of the short-lived $^{38}$Ca
nuclide with an uncertainty of $1.6\cdot 10^{-8}$ using the ISOLTRAP Penning
trap mass spectrometer at CERN. The mass value of the superallowed beta-emitter
$^{38}$Ca is an important contribution for testing the conserved-vector-current
hypothesis of the electroweak interaction. It is shown that the Ramsey method
applied to mass measurements yields a statistical uncertainty similar to that
obtained by the conventional technique ten times faster.


title: RHIC Critical Point Search: Assessing STAR's Capabilities

abstract:
  In this report we discuss the capabilities and limitations of the STAR
detector to search for signatures of the QCD critical point in a low energy
scan at RHIC. We find that a RHIC low energy scan will cover a broad region of
interest in the nuclear matter phase diagram and that the STAR detector -- a
detector designed to measure the quantities that will be of interest in this
search -- will provide new observables and improve on previous measurements in
this energy range.


title:
High-precision mass measurements of nickel, copper, and gallium isotopes
  and the purported shell closure at N=40

abstract:
  High-precision mass measurements of more than thirty neutron-rich nuclides
around the Z=28 closed proton shell were performed with the triple-trap mass
spectrometer ISOLTRAP at ISOLDE/CERN to address the question of a possible
neutron shell closure at N=40. The results, for 57,60,64-69Ni (Z=28),
65-74,76Cu (Z=29), and 63-65,68-78Ga (Z=31), have a relative uncertainty of the
order of 10^8. In particular, the masses of 72-74,76Cu have been measured for
the first time. We analyse the resulting mass surface for signs of magicity,
comparing the behavior of N=40 to that of known magic numbers and to mid-shell
behavior. Contrary to nuclear spectroscopy studies, no indications of a shell
or sub-shell closure are found for N=40.


title: Direct mass measurements beyond the proton drip-line

abstract:
  First on-line mass measurements were performed at the SHIPTRAP Penning trap
mass spectrometer. The masses of 18 neutron-deficient isotopes in the
terbium-to-thulium region produced in fusion-evaporation reactions were
determined with relative uncertainties of about $7\cdot 10^{-8}$, nine of them
for the first time. Four nuclides ($^{144, 145}$Ho and $^{147, 148}$Tm) were
found to be proton-unbound. The implication of the results on the location of
the proton drip-line is discussed by analyzing the one-proton separation
energies.


title:
Single Spin Transverse Asymmetries of Neutral Pions at Forward
  Rapidities in sqrt(s) = 62.4 GeV Polarized Proton Collisions in PHENIX

abstract:
  In the RHIC run of 2006, PHENIX recorded data from about 20/nb of
transversely polarized p+p collisions at sqrt(s) = 62.4 GeV and polarization of
about 50%. Also in this last run PHENIX successfully commissioned a new
lead-tungstate based electromagnetic calorimeter, the Muon Piston Calorimeter
(MPC), covering 2 pi in azimuth and 3.1<eta<3.7. The forward coverage allows
PHENIX to measure high x_F pi^0 production. We present the current status of
the analysis for the single inclusive pi^0 transverse asymmetry A_N at forward
rapidities in PHENIX.


title: Identified Particle Jet Correlations from PHENIX

abstract:
  Two-particle azimuthal correlations have been shown to be a powerful probe
for extracting novel features of the interaction between hard scattered partons
and the medium produced in Au+Au collisions at RHIC. At intermediate $p_T$,
2-5GeV/c, jets have been shown to be significantly modified in both particle
composition and angular distribution compared to p+pcollisions. We present
recent PHENIX results from Au+Au collisions for a variety of $p_T$ and particle
combinations.


title: J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon

abstract:
  The NA60 experiment has studied J/$\psi$ production in Indium-Indium
collisions at 158 A$\cdot$GeV. In this paper we present an updated set of
results obtained with the complete set of available statistics and an improved
alignment of the vertex tracker. The centrality dependence of the J/$\psi$
production, obtained with an analysis technique based only on the J/$\psi$
sample, indicates that a suppression beyond that induced by nuclear absorption
is present in In-In collisions, setting in at $\sim$80 participant nucleons. A
first study of the systematic errors related with this measurement is
discussed. We also present preliminary results on the J/$\psi$ azimuthal
distributions.


title:
Centrality dependence of hyperon global polarization in Au+Au collisions
  at RHIC

abstract:
  We present the centrality dependence of Lambda and Anti-Lambda hyperon global
polarization in Au+Au collisions at sqrt{s_NN}=62 GeV and 200 GeV measured with
the STAR detector at RHIC. Within the precision of the measurement, we observe
no centrality dependence of Lambda and Anti-Lambda hyperon global polarization
and within our acceptance it is consistent with zero. Different sources of
systematic uncertainties (feed down effects, spin precession) are discussed and
estimated. The obtained upper limit, |P_{Lambda,Anti-Lambda}| < 0.02, is
compared to theoretical predictions discussed recently in literatures.


title: Quarkonium Production in PHENIX

abstract:
  Quarkonia provide a sensitive probe of the properties of the hot dense medium
created in high energy heavy ion collisions. Hard scattering processes result
in the production of heavy quark pairs that interact with the collision medium
during hadronization. These in medium interactions convey information about the
fundamental properties of the medium itself and can be used to examine the
modification of the QCD confining potential in the collision environment.
Baseline measurements from the d+Au and p+p collision systems can be used to
distinguish cold nuclear matter effects while measurements from heavy ion
collision systems, Au+Au and Cu+Cu, can be used to quantify in-medium effects.
PHENIX results for the production of the $J/\psi$ for a diverse set of
collision systems and energies and for the $\Upsilon$ in p+p collisions are
presented.


title:
Cross Sections for the $\gamma p \to K^{*0}\Sigma^+$ Reaction at
  $E_\gamma = 1.7 - 3.0$ GeV

abstract:
  Differential cross sections for the reaction $\gamma p \to K^{*0} \Sigma^+$
are presented at nine bins in photon energy in the range from 1.7 to 3.0 GeV.
The \kstar was detected by its decay products, $K^+\pi^-$, in the CLAS detector
at Jefferson Lab. These data are the first \kstar photoproduction cross
sections ever published over a broad range of angles. Comparison with a
theoretical model based on the vector and tensor $K^*$-quark couplings shows
good agreement with the data in general, after adjusting the model's two
parameters in a fit to our data. Disagreement between the data at forward
angles and the global angle-energy fit to the model suggests that the role of
scalar $\kappa$ meson exchange in $t$-channel diagrams should be investigated.


title: Heavy Quarkonia Production in p+p Collisions from the PHENIX Experiment

abstract:
  Quarkonia provide a sensitive probe of the properties of the hot dense medium
created in high energy heavy ion collisions. Hard scattering processes result
in the production of heavy quark pairs that interact with the collision medium
during hadronization. These in-medium interactions convey information about the
fundamental properties of the medium itself and can be used to examine the
modification of the QCD confining potential in the collision environment.
Baseline measurements from p+p and d+Au collision systems are used to
distinguish cold nuclear matter effects while measurements from heavy ion
collision systems are used to quantify in-medium effects. The PHENIX experiment
has the capability of detecting heavy quarkonia at $1.2<|\eta|<2.2$ via the
$\mu^+\mu^-$ decay channel and at $|\eta|<0.35$ via the $e^+e^-$ decay channel.
Recent runs have resulted in the collection of high statistics p+p data sets
that provide an essential baseline reference for heavy ion measurements and
allow for further critical evaluation of heavy quarkonia production mechanisms.
The latest PHENIX results for the production of the $J/\psi$ in p+p collisions
are presented and future prospects for $\psi'$, $\chi_{c}$ and $\Upsilon$
measurements are discussed.


title:
Energy and system size dependence of charged particle elliptic flow and
  $v_2/\eps$ scaling

abstract:
  We report measurements of charged particle elliptic flow %($v_2$) at
mid-rapidity in Au+Au and Cu+Cu collisions at $\sqrt{s_{_{NN}}}=62$ and 200
GeV. Using correlations between main STAR TPC and Forward TPCs ensures minimal
bias due to non-flow effects. We further investigate the effect of flow
fluctuations on $v_2/\eps$ scaling studying initial geometry eccentricity
fluctuations in Monte-Carlo Glauber model, consistent with STAR direct
measurements of elliptic flow fluctuations. It is found that accounting for the
effect of flow fluctuations improves $v_2/\eps$ scaling.


title:
Determination of the cross sections of (n,2n), (n,gamma) nuclear
  reactions on germanium isotopes at the energy of neutrons 13.96 MeV

abstract:
  The cross sections of 70Ge(n,2n)69Ge, 72Ge(n,2n)71Ge,
76Ge(n,gamma)77(g+0.21m)Ge, 76Ge(n,2n)75Ge nuclear reactions were measured at
the energy of neutrons 13.96(6) MeV by activation method with gamma-ray and
X-ray spectra studies.


title:
Systematic Study of High-pT Direct Photon Production with the PHENIX
  Experiment at RHIC

abstract:
  When studying the initial state and evolution of the matter created in
relativistic heavy ion collisions, high-pT direct photons are a powerful probe.
They are created in initial hard processes and in parton fragmentation, and
possibly in interactions of partons with the hot and dense medium. We present
systematic measurements of high-pT direct photon production in \sqrt{s_{NN}} =
200 GeV p+p and Au+Au collisions. The nuclear modification factor of direct
photons is shown for 5 < pT < 18 GeV/c, and at very high transverse momenta it
seems to be below unity in the most central Au+Au collisions.


title: Collective Dynamics at RHIC

abstract:
  The property of the ``perfect liquid'' created at RHIC is probed with
anisotropic flow measurements. Different initial conditions and their
consequences on flow measurements are discussed. The collectivity is shown to
be achieved fast and early. The thermalization is investigated with the ratio
of $v_4/v_2^2$. Measurements from three sectors of soft physics (HBT, flow and
strangeness) are shown to have a simple, linear, length scaling. Directed flow
is found to be independent of system size.


title:
Centrality and Energy Dependence of Proton, Light Fragment and Hyperon
  Production

abstract:
  Recent results of the NA49 collaboration are discussed. These include the
energy dependence of stopping and the production of the light fragments t and
3He. New data on the system size dependence of hyperon production at 40A and
158AGeV are also presented.


title:
Are High-pT Pions Suppressed in Pb+Pb Collisions at sqrt(sNN) = 17.3
  GeV?

abstract:
  Transverse momentum spectra of neutral pions in the range 0.7 < pT < 3.2
GeV/c have been measured at 2.3 < eta < 3.0 by the WA98 experiment in p+C and
p+Pb collisions at sqrt(sNN) = 17.3 GeV. Scaled by the number of
nucleon-nucleon collisions (Ncoll) the pi^0 yields in p+C and p+Pb at pT ~ 2.0
- 2.5 GeV/c are higher than the respective yields in central Pb+Pb collisions
with Npart > 300. This observation is qualitatively consistent with
expectations from parton energy loss.


title:
The anisotropic flow coefficients $v_2$ and $v_4$ in Au+Au collisions at
  RHIC

abstract:
  We present measurements by STAR of the anisotropic flow coefficients $v_2$
and $v_4$ as a function of particle-type, centrality, transverse momentum and
pseudorapidity in Au+Au collisions at RHIC.


title: Incident-energy and system-size dependence of directed flow

abstract:
  We present STAR's measurements of directed flow for charged hadrons in Au+Au
and Cu+Cu collisions at $\sqrt{s_\mathrm{NN}} = 200$ GeV and 62.4 GeV, as a
function of pseudorapidity, transverse momentum and centrality. We find that
directed flow depends on the incident energy, but not on the system size. We
extend the validity of limiting fragmentation hypothesis to different collision
systems.


title: Neutron Transfer reactions induced by 8Li on 9Be

abstract:
  Angular distributions for the elastic scattering of 8Li on 9Be and the
neutron transfer reactions 9Be(8Li,7Li)10Be and 9Be(8Li,9Li)8Be have been
measured with a 27 MeV 8Li radioactive nuclear beam. Spectroscopic factors for
8Li|n=9Li and 7Li|n=8Li bound systems were obtained from the comparison between
the experimental differential cross section and finite-range DWBA calculations
with the code FRESCO. The spectroscopic factors obtained are compared to shell
model calculations and to other experimental values from (d,p) reactions. Using
the present values for the spectroscopic factor, cross sections for the direct
neutron-capture reactions 7Li(n,g)8Li and 8Li(n,g)9Li were calculated in the
framework of a potential model.


title:
Azimuthal and pseudo-rapidity correlations with strange particles at
  intermediate-p$_T$ at RHIC

abstract:
  We present results on two-particle azimuthal correlations with strange
trigger particles ($K^0_S$, $\Lambda$, $\Xi$, $\Omega$) associated with
unidentified charged particles %at intermediate $p_T$ in d+Au and Au+Au
collisions at $\sqrt{s_{NN}}$ = 200 GeV. We investigate, in detail, the
near-side associated yield as a function of centrality, $p_T$ and strangeness
content in the trigger particle to look for possible flavor and baryon/meson
differences. We compare our results to a fragmentation and recombination model,
where the study of $\Omega$-triggered correlations is used as a critical test
of the validity of the recombination picture.


title:
Evidence from Identified Particles for Active Quark and Gluon Degrees of
  Freedom

abstract:
  Measurements of intermediate pT (1.5 < pT < 5.0 GeV/c) identified particle
distributions in heavy ion collisions at SPS and RHIC energies display striking
dependencies on the number of constituent quarks in the corresponding hadron.
One finds that elliptic flow at intermediate pT follows a constituent quark
scaling law as predicted by models of hadron formation through coalescence. In
addition, baryon production is also found to increase with event multiplicity
much faster than meson production. The rate of increase is similar for all
baryons, and seemingly independent of mass. This indicates that the number of
constituent quarks determines the multiplicity dependence of identified hadron
production at intermediate pT. We review these measurements and interpret the
experimental findings.


title: Elliptic flow fluctuations in 200 GeV Au+Au collisions at RHIC

abstract:
  We present first results on event-by-event elliptic flow fluctuations in
Au+Au collisions at 200 GeV obtained with the PHOBOS detector. Over the
measured range in centrality, large relative fluctuations of 40--50% are found.
The elliptic flow fluctuations are well described as being proportional to
fluctuations in the shape of the initial collision region, as estimated
event-by-event with the participant eccentricity using Glauber Monte Carlo.


title:
The first measurement of $B$ meson semi-leptonic decay contribution to
  non-photonic electrons at RHIC

abstract:
  We present the first measurement for the $B$ meson semi-leptonic decay
contribution to non-photonic electrons at RHIC using non-photonic electron
azimuthal correlations with charged hadrons in p+p collisions at $\sqrt{s_{NN}}
= 200$ GeV from STAR.


title: Latest Results from PHOBOS

abstract:
  This manuscript contains a summary of the latest physics results from PHOBOS,
as reported at Quark Matter 2006. Highlights include the first measurement from
PHOBOS of dynamical elliptic flow fluctuations as well as an explanation of
their possible origin, two-particle correlations, identified particle ratios,
identified particle spectra and the latest results in global charged particle
production.


title:
Centrality dependence of the $N(\Omega)/N(\phi)$ ratios and $\phi$
  $v_{2}$ - a test of thermalization in Au+Au collisions at RHIC

abstract:
  We present the centrality dependence of the $N(\Omega)/N(\phi)$ ratios and
$\phi$ $v_{2}$ measured in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV by the
STAR experiment at RHIC. The results are compared to measurements of other
identified particles and recombination model expectations in order to gain
insight into the partonic collectivity and possible thermalization of the
produced medium.


title: First measurements of the ^16O(e,e'pn)^14N reaction

abstract:
  This paper reports on the first measurement of the ^16O(e,e'pn)^14N reaction.
Data were measured in kinematics centred on a super-parallel geometry at energy
and momentum transfers of 215 MeV and 316 MeV/c. The experimental resolution
was sufficient to distinguish groups of states in the residual nucleus but not
good enough to separate individual states. The data show a strong dependence on
missing momentum and this dependence appears to be different for two groups of
states in the residual nucleus. Theoretical calculations of the reaction using
the Pavia code do not reproduce the shape or the magnitude of the data.


title:
Elliptic Flow and Initial Eccentricity in Cu+Cu and Au+Au Collisions at
  RHIC

abstract:
  We present a systematic study of elliptic flow as a function of centrality,
pseudorapidity, transverse momentum and energy for Cu+Cu and Au+Au collisions
from the PHOBOS experiment. New data on elliptic flow in Cu+Cu collisions at
22.4 GeV are shown. Elliptic flow scaled by participant eccentricity is found
to be similar for both systems when collisions with the same number of
participants or the same average area density are compared. This similarity is
observed over a wide range in pseudorapidity and transverse momentum,
indicating that participant eccentricity is the relevant quantity for
generating the azimuthal asymmetry leading to the observed elliptic flow.


title: Two-particle angular correlations in p+p and Cu+Cu collisions at PHOBOS

abstract:
  We present results on two-particle angular correlations in p+p and Cu+Cu
collisions over a broad range of ($\eta$,$\phi$). The PHOBOS detector has a
uniquely large angular coverage for inclusive charged particles. This allows
for the study of correlations on both long and short range pseudorapidity
scales. A complex two-dimensional correlation structure emerges which is
interpreted in the context of a cluster model. The cluster size and its decay
width are extracted from the two-particle pseudorapidity correlation function.
Relative to p+p collisions, Cu+Cu reactions show a non-trivial decrease of
cluster size with increasing centrality. These results may provide insight into
the hadronization stage of the hot and dense medium created in heavy ion
collisions.


title:
Properties of particle production at large transverse momentum in Au+Au
  and Cu+Cu collisions at RHIC

abstract:
  We present the incident energy and system size dependence of the pT spectra
for charged pions, protons, and anti-protons using Au+Au and Cu+Cu collisions
at Sqrt(sNN) = 62.4 and 200 GeV in STAR experiment at RHIC. Through these
measurements in the pT range of 0.2 < pT < 10 GeV/c we conduct a systematic
study of the beam energy, system size and particle species dependence of
nuclear modification factors and address specific predictions from the quark
coalescence models regarding the beam energy dependence of baryon enhancement
in the intermediate pT (2 < pT < 6 GeV/c) region.


title:
Yields and elliptic flow of d(dbar) and He3(He3bar) in Au+Au collisions
  at sqrt(sNN)= 200 GeV

abstract:
  We present the transverse momentum spectra at mid-rapidity for $d$, $\bar{d}$
($1<p_{T}<4 GeV/c$) and $^{3}He$, $\bar{^{3}He}$ ($2<p_{T}<6 GeV/c$) measured
by the STAR experiment at RHIC and extract the coalescence parameters $B_{2}$
and $B_{3}$ (respectively). We also present the $v_{2}$ measurement for
$d(\bar{d})$ and $^{3}He(\bar{^{3}He})$. We find that the $d(\bar{d})$ and
$p(\bar{p})$ $v_{2}$ follows the atomic mass number A scaling within errors and
a negative $v_{2}$ has been observed for $\bar{d}$ at low $p_{T}$.


title:
Angular Distributions of the Particles Emitted in Kr (at 0.95 a Gev) and
  Au (at 10.7 a Gev) Emulsion Reactions

abstract:
  We will discuss the experimental results of the behavior of the angular
distributions of slow particles emitted in hadron-nuclear and nuclear-nuclear
interactions at relativistic energies.


title:
STAR Results on High Transverse Momentum, Heavy Flavor and
  Electromagnetic Probes

abstract:
  We summarize here recent results from the STAR collaboration focusing on
processes involving large momentum transfers. Measurements of angular
correlations of di-hadrons are explored in both the pseudorapidity (eta) and
azimuthal (phi) projections. In central Au+Au, an elongated structure is found
in the eta projection which persists up to the highest measured pT. After
quantifying the particle yield in this structure and subtracting it from the
near-side yield, we observe that the remainder exhibits a behavior strikingly
similar to that of the near-side yield in d+Au. For heavy flavor production,
using electron-hadron correlations in p+p collisions, we obtain an estimate of
the b-quark contribution to the non-photonic electrons in the pT region 3-6
GeV/c, and find it consistent with FONLL calculations. Together with the
observed suppression of non-photonic electrons in Au+Au, this strongly suggests
suppression of b-quark production in Au+Au collisions. We discuss results on
the mid-rapidity Upsilon cross-section in p+p collisions. Finally, we present a
proof-of-principle measurement of photon-hadron correlations in p+p collisions,
paving the way for the tomographic study of the matter produced in central
Au+Au via gamma-jet measurements.


title: Diagnosing Energy Loss: PHENIX Results on High-pT Hadron Spectra

abstract:
  Measurements of inclusive spectra of hadrons at large transverse momentum
over a broad range of energy in different collision systems have been performed
with the PHENIX experiment at RHIC. The data allow to study the energy and
system size dependence of the suppression observed in RAA of high-pT hadrons at
sqrt(s_NN)= 200 GeV. Due to the large energy range from sqrt(s_NN)= 22 GeV to
200 GeV, the results can be compared to results from CERN SPS at a similar
energy. The large Au+Au dataset from the 2004 run of RHIC also allows to
constrain theoretical models that describe the hot and dense matter produced in
such collisions. Investigation of particle ratios such as eta/pi0 helps
understanding the mechanisms of energy loss.


title:
Jet-like correlations between Forward- and Mid- rapidity in p+p, d+Au
  and Au+Au collisions from STAR at 200 GeV

abstract:
  In this proceedings we present STAR measurements of two particle azimuthal
correlations between trigger particles at mid-rapidity ($|\eta|<$ 1) and
associated particles at forward rapidities (2.7 $<|\eta|<$ 3.9) in p+p, d+Au
and Au+Au collisions at $\sqrt{s_{NN}} $= 200 GeV. Two particle azimuthal
correlations between a mid-rapidity trigger particle and forward-rapidity
associated particles preferably probe large-x quarks scattered off small-x
gluons in RHIC collisions. Comparison of the separate d- and Au-side
measurements in d+Au collisions may potentially probe gluon saturation and the
presence of Color Glass Condensate. In Au+Au collisions quark energy loss can
be probed at large rapidities, which may be different from gluon energy loss
measured at mid-rapidity.


title: Scaling Properties of Fluctuation and Correlation Results from PHENIX

abstract:
  Recent surveys of multiplicity fluctuations, transverse momentum
fluctuations, and two-particle azimuthal correlations are presented for several
collision systems as a function of centrality and transverse momentum. Both
multiplicity and transverse momentum fluctuations exhibit a power law scaling
as a function of the number of participants that is independent of the
collision system. Although these observations are consistent with critical
behavior, the critical exponent $\eta$ measured using azimuthal correlations is
seen to be independent of centrality and collision system. Also observed in the
azimuthal correlations is a displaced away side peak in central Au+Au
collisions when the pairs are restricted to low transverse momentum.


title:
$\Xi^{0}(1530)$ Production in Heavy-Ion Collisions \linebreak and its
  Implications for $\Delta t_{therm-chem}$

abstract:
  We present the first measurements of the transverse momentum spectra and
mid-rapidity yields of the $\Xi^{0}(1530)$ multi-strange baryon resonance, from
$\sqrt{\mathrm{s_{NN}}}=200$ GeV Au+Au collisions at RHIC from the STAR
experiment. Ratios of the mid-rapidity yield of this long-lived ($c\tau=21$ fm)
resonance to its non-resonance partner (the $\Xi$ baryon) are compared to
predictions from thermal models and to the corresponding ratios for other
resonances previously reported by STAR. Conclusions will be drawn about the
implication of these measurements for the time between chemical and thermal
freeze-out ($\Delta t_{therm-chem}$) and any observed deviations from the
expected mass and width will be discussed.


title:
Antiparticle to particle ratios and identified hadron spectra in Cu+Cu
  and Au+Au collisions

abstract:
  New results on antiparticle to particle ratios in Cu+Cu and Au+Au collisions
at sqrt(s_NN) = 62.4 and 200 GeV from the PHOBOS experiment at RHIC are
presented. Transverse momentum spectra of pions, kaons, protons and antiprotons
from Au+Au collisions at sqrt(s_NN) = 62.4 GeV close to mid-rapidity are also
discussed. Antiparticle to particle ratios are found to be remarkably
independent of the collision centrality in both colliding systems. The
collision energy dependence of the pbar/p ratios is very significant in Cu+Cu
collisions. Baryons are found to have substantially harder transverse momentum
spectra than mesons. The pT region in which the proton to pion ratio reaches
unity in central Au+Au collisions at sqrt(s_NN) = 62.4 GeV fits into a smooth
trend as a function of collision energy. The observed particle yields at very
low pT are comparable to extrapolations from higher pT for kaons, protons and
antiprotons. The net proton yield at mid-rapidity is found to be proportional
to the number of participant nucleons in Au+Au collisions at 62.4 and 200 GeV
energies.


title:
Measurement of the Enhanced Screening Effect of the d+d Reactions in
  Metals

abstract:
  The investigation of the d+d fusion reactions in metallic environments at
sub-Coulomb energies demands especially adapted techniques beyond standard
procedures in nuclear physics. The measurements which were performed with an
electrostatic accelerator at different self-implanted metallic target materials
show an enhancement of the reaction cross-section compared to the gas target
experiments. The resulting electron screening energy values are about one order
of magnitude larger relative to the gas target experiments and exceed
significantly the theoretical predictions. The measurements on deuterium inside
metals are heavily affected by the interference of two peculiarities of this
system: the possibly very high mobility of deuterium in solids and the
formation of surface contamination layers under ion beam irradiation in high
vacuum systems. Thorough investigations of these processes show their crucial
influence on the interpretation of the experimental raw data. The differential
data acquisition and analysis method employed to it is outlined. Non observance
of these problems by using standard procedures results in fatal errors for the
extraction of the screening energies.


title:
Low Energy States of $^{81}_{31} Ga_{50}$ : Elements on the Doubly-Magic
  Nature of $^{78}$Ni

abstract:
  Excited levels were attributed to $^{81}_{31}$Ga$_{50}$ for the first time
which were fed in the $\beta$-decay of its mother nucleus $^{81}$Zn produced in
the fission of $^{nat}$U using the ISOL technique. We show that the structure
of this nucleus is consistent with that of the less exotic proton-deficient
N=50 isotones within the assumption of strong proton Z=28 and neutron N=50
effective shell effects.


title: Proton-proton physics in ALICE

abstract:
  The ALICE experiment has several unique features which makes it an important
contributor to proton-proton physics at the LHC, in addition to its specific
design goal of studying the physics of strongly interacting matter in heavy-ion
collisions. The unique capabilities include its low transverse momentum (\pT)
acceptance, excellent vertexing, particle identification over a broad \pT range
and jet reconstruction. In this report, a brief review of ALICE capabilities is
given for studying bulk properties of produced particles which characterize the
underlying events, and the physics of heavy-flavour, quarkonia, photons,
di-leptons and jets.


title: Compton Scattering Cross Section on the Proton at High Momentum Transfer

abstract:
  Cross-section values for Compton scattering on the proton were measured at 25
kinematic settings over the range s = 5-11 and -t = 2-7 GeV2 with statistical
accuracy of a few percent. The scaling power for the s-dependence of the cross
section at fixed center of mass angle was found to be 8.0 +/ 0.2, strongly
inconsistent with the prediction of perturbative QCD. The observed
cross-section values are in fair agreement with the calculations using the
handbag mechanism, in which the external photons couple to a single quark.


title:
Low- and Intermediate-p$_T$ Di-hadron Distributions in Au+Au Collisions
  at $\sqrt{s_{NN}}=200$ GeV from STAR

abstract:
  We present a study of low- and intermediate-p$_T$ correlated azimuthal
angular distributions in Au+Au collisions at $\sqrt{s_{NN}}=200 \rm{GeV}$ from
STAR. The near-side associated yields in Au+Au collisions are found to be
strongly enhanced, due to contributions from large $\Delta\eta$. The
enhancement is reduced for high \pTtrig. We show a strong broadening and
enhancement of the away-side yield. The evolution of the away-side shape may be
explained as the sum of a broad structure from bulk response and a narrow peak
from jet fragmentation.


title: Physics with Identified Particles at STAR

abstract:
  New physics results with identified particles at STAR are presented.
Measurements at low $p_T$ address bulk properties of the collision, while those
at high $p_T$ address jet energy loss in the bulk matter produced. Between
these extremes, measurements at intermediate $p_T$ address the interplay
between jets and the bulk. We highlight: measurements of $v_2$ fluctuations as
a new, sensitive probe of the initial conditions and the equation of state;
correlations involving multi-strange particles, along with ratios of identified
particles to test coalescence as a mechanism of particle production at
intermediate $p_T$; three particle azimuthal correlation to search for conical
emission; and the energy and particle-type dependence of hadron production at
high $p_T$ to study quark and gluon jet energy loss.


title: Direct photons in d+Au and p+p collisions

abstract:
  Results are presented from an ongoing analysis of direct photon production
with the STAR experiment at RHIC. The direct photon measurement in d+Au
collisions and the neutral pion spectrum in p+p collisions are found to be in
agreement with NLO pQCD calculations.


title: Precision study of the eta-3He system using the d+p->3He+eta reaction

abstract:
  The differential and total cross sections for the d+p->3He+eta reaction have
been measured in a high precision high statistics COSY-ANKE experiment near
threshold using a continuous beam energy ramp up to an excess energy Q of 11.3
MeV with essentially 100% acceptance. The kinematics allowed the mean value of
Q to be determined to about 9 keV. Evidence is found for the effects of higher
partial waves for Q>4 MeV. The very rapid rise of the total cross section to
its maximum value within 0.5 MeV of threshold implies a very large eta-3He
scattering length and hence the presence of a quasi-bound state extremely close
to threshold.


title:
Near-barrier Fusion and Transfer/Breakup induced by Weakly Bound and
  Exotic Halo Nuclei

abstract:
  This submission has been withdrawn by arXiv administrators because it is a
duplicate of nucl-th/0610004.


title: Intra-jet correlations of high-$p_t$ hadrons from STAR

abstract:
  Systematic measurements of pseudorapidity ($\Delta\eta$) and azimuthal
($\Delta\phi$) correlations between high-$p_t$ charged hadrons in
$\sqrt{s_{NN}}$=200 GeV Au+Au collisions are presented. An enhancement of
correlated yield at large $\Delta\eta$ on the near-side is observed. This
effect persists up to trigger $p_{t}^{trig}$ $\sim$ 9 GeV/c, indicating that it
is associated with jet production. More detailed analysis suggests distinct
short-range and long-range components in the correlation.


title: Upsilon cross section in p+p collisions at STAR

abstract:
  The main focus of the heavy flavor program at RHIC is to investigate the
properties of the dense matter produced in heavy-ion collisions by studying its
effect on open heavy flavor and quarkonia production. This in turn requires a
detailed understanding of their production in elementary p+p collisions so that
the dense matter effects can be later unfolded. In this paper, we present the
first mid-rapidity cross section measurement of bottomonium at $\sqrt{s}=200$
GeV with the STAR experiment. We compare our results with perturbative QCD
calculations. A brief status on the study of charmonium in STAR is given.


title: Rapidity and pt dependence of identified-particle elliptic flow at RHIC

abstract:
  Elliptic flow has been measured by the BRAHMS experiment as a function of
transverse momentum and pseudorapidity for the Au+Au reaction at sqrt[s_{NN}] =
200 GeV. Identified-particle v2 (eta, pt) values were obtained with the two
BRAHMS spectrometers at pseudorapidities eta approximately equal to 0, 1, and
3.4. The results show that the differential v2(eta, pt) values for a given
particle type are essentially constant over the covered pseudorapidity range.
It is suggested that the dominant cause of the observed fall-off of the
integral v2 values going away from mid-rapidity is a corresponding softening of
the particle spectra .


title: Ultra-peripheral heavy ion collisions at STAR

abstract:
  Ultra-peripheral heavy ion collisions involve long range electromagnetic
interactions at impact parameters larger than twice the nuclear radius, where
the strong nucleon-nuecleon interactions are uneffective. We present recent
results from the STAR collaboration on these ultra-peripheral interactions
likes incoherent rho0 production in deuteron-gold collisions and interferometry
in gold-gold collisions


title:
Differential elliptic flow at forward rapidity in 200 GeV AuAu
  collisions

abstract:
  Identified particle elliptic flow results are presented for the Au+Au
reaction at sqrt[s_{NN}] = 200$ GeV as a function of transverse momentum and
pseudorapidity. Data at pseudorapidities eta approximately equal to 0, 1, and
3.4 were obtained using the two BRAHMS spectrometers. Differential v2(eta, pt)
values for a given particle type are found to be essentially constant over the
covered pseudorapidity range, in contrast to the integral v2 values which have
previously been observed to decrease at forward rapidities. A softening of the
particle spectra at forward angles is found to account for at least part of the
integral v2 falloff. The data are found to be consistent with existing
constituent quark scaling systematics.


title: The PHENIX Potential in the Search for the QCD Critical Point

abstract:
  With the measurement of several observables at SPS energies that demonstrate
non-monotonic behavior as a function of centrality and $\sqrt{s_{NN}}$, there
is growing interest in pursuing a scan of relativistic heavy ion collisions at
low energies at the Relativistic Heavy Ion Collider. The capabilities of the
PHENIX experiment to take quality measurements at low RHIC energies is
described and directly demonstrated with analyses of Au+Au collisions at
$\sqrt{s_{NN}}$ = 19.6 GeV and Cu+Cu collisions at $\sqrt{s_{NN}}$ = 22.5 GeV.
The contribution of upgrades to the PHENIX detector in the upcoming years will
also be discussed in the context of a low energy RHIC run.


title: Fluctuations and low transverse momentum correlation results from PHENIX

abstract:
  The PHENIX Experiment at the Relativistic Heavy Ion Collider has conducted a
survey of fluctuations in charged hadron multiplicity in Au+Au and Cu+Cu
collisions at $\sqrt{s_{NN}}$ = 22, 62, and 200 GeV. A universal power law
scaling for multiplicity fluctuations expressed as $\sigma^2/\mu^2$ is observed
as a function of $N_{part}$ for all species studied that is independent of the
transverse momentum range of the measurement. PHENIX has also measured
transverse momentum correlation amplitudes in p+p, d+Au, and Au+Au collisions.
At low transverse momentum, significant differences in the correlations between
the baseline p+p and d+Au data and the Au+Au data are presented.


title: Anti-Lambda hyperon global polarization in Au+Au collisions at RHIC

abstract:
  We present the Anti-Lambda hyperon global polarization in Au+Au collisions at
sqrt(s_NN) = 62 GeV and 200 GeV measured with the STAR detector at RHIC. The
observed Anti-Lambda hyperon global polarization is consistent with zero, what
is in agreement with recent measurements of Lambda global polarization, as well
as phi(1020) and K*0(892) vector mesons spin alignment with respect to the
reaction plane. The possible dependence of the global polarization on relative
azimuthal angle between the orbital momentum of the system and the hyperon
3-momentum is discussed. The corresponding systematic uncertainty due to
detector acceptance is found to be less than 20%.


title:
Angular dependence of recoil proton polarization in high-energy \gamma d
  \to p n

abstract:
  We measured the angular dependence of the three recoil proton polarization
components in two-body photodisintegration of the deuteron at a photon energy
of 2 GeV. These new data provide a benchmark for calculations based on quantum
chromodynamics. Two of the five existing models have made predictions of
polarization observables. Both explain the longitudinal polarization transfer
satisfactorily.. Transverse polarizations are not well described, but suggest
isovector dominance.


title: 3He(alpha,gamma)7Be cross section at low energies

abstract:
  The flux of 7Be and 8B neutrinos from the Sun and the production of 7Li via
primordial nucleosynthesis depend on the rate of the 3He(alpha,gamma)7Be
reaction. In extension of a previous study showing cross section data at 127 -
167 keV center of mass energy, the present work reports on a measurement of the
3He(alpha,gamma)7Be cross section at 106 keV performed at Italy's Gran Sasso
underground laboratory by the activation method. This energy is closer to the
solar Gamow energy than ever reached before. The result is sigma = 0.567 +-
0.029(stat) +- 0.016(syst) nbarn. The data are compared with previous
activation studies at high energy, and a recommended S(0) value for all
3He(alpha,gamma)7Be activation studies, including the present work, is given.


title: Identified Particle Production in d+Au and p+p collisions at RHIC

abstract:
  The BRAHMS experiment at RHIC has measured the transverse momentum spectra of
charged pions, kaons and (anti-)protons over a wide range of rapidity in d+Au
and p+p collisions at $\sqrt{s_{NN}}=200 $GeV. The nuclear modification factor
$R_{dAu}$ at forward rapidities shows a clear suppression for $\pi^{+}$. The
measured net-proton yields in p+p collisions are compared to PYTHIA and
HIJING/B and seem to be better described by the latter.


title:
Search for Low Mass Exotic Baryons in One Pion Electroproduction Data
  Measured at JLAB

abstract:
  This paper aims to give further evidence for the existence of low mass exotic
baryons. Narrow structures in baryonic missing mass or baryonic invariant mass
were previously observed during the last ten years. Since their existence is
sometimes questionable, the structure functions of one pion electroproduction
cross sections, measured at JLAB, are studied to add informations on the
possible existence of these narrow exotic baryonic resonances.


title: Candidate chiral doublet bands in the odd-odd nucleus $^{126}$Cs

abstract:
  The candidate chiral doublet bands recently observed in $^{126}$Cs have been
extended to higher spins, several new linking transitions between the two
partner members of the chiral doublet bands are observed, and
$\gamma$$-$intensities related to the chiral doublet bands are presented by
analyzing the $\gamma$$-$$\gamma$ coincidence data collected earlier at the
NORDBALL through the $^{116}$Cd$($$^{14}$N, 4n$)$$^{126}$Cs reaction at a beam
energy of 65 MeV. The intraband $B(M1)/B(E2)$ and interband
$B(M1)_{in}/B(M1)_{out}$ ratios and the energy staggering parameter, S(I), have
been deduced for these doublet bands. The results are found to be consistent
with the chiral interpretation for the two structures. Furthermore, the
observation of chiral doublet bands in $^{126}$Cs together with those in
$^{124}$Cs, $^{128}$Cs, $^{130}$Cs and $^{132}$Cs also indicates that the
chiral conditions do not change rapidly with decreasing neutron number in these
odd-odd Cesium isotopes.