**Monday,
May 28, 2012, 3:50PM – 5:40PM – **

**Session
EOS + Cluster3 Equation of State of Neutron-Rich Nuclear Matter,
Clusters in Nuclei and Nuclear Reactions III**

**Room:
Pecos**

**Chair:
B. A. Li**

3:50PM

**Three-body
force effect on the properties of neutron-rich nuclear matter**, W. Zuo, *Institute of Modern Physics, Chinese Academy of Sciences,
China* − We shall report our investigation of the three-body force
effect on the equation of state and the single particle properties of
neutron-rich nuclear matter within the extended BHF approach.

4:20PM

**Tensor force induced
short-range nucleon-nucleon correlation and high-density behavior of
nuclear symmetry energy**, C. Xu, *Nanjing
University, China *− The tensor force induced short-range
nucleon-nucleon correlation on the Equations of State of nuclear matter
as well as the nuclear symmetry energy are investigated. It
is found that the tensor force can influence significantly the nuclear
symmetry energy especially at supra-saturation densities. This finding confirms the critical role of the
tensor force acting in neutron-proton isosinglet pairs in determining
the high-density behavior of nuclear symmetry energy predicted by
various microscopic and phenomenological nuclear many-body theories.

4:40PM

**Nuclear symmetry energy and
the role of the tensor force**, I. Vidana, *University
of Coimbra, Portugal* − Using the Hellmann--Feynman theorem we
analyze the contribution of the different terms of the nucleon-nucleon
interaction to the nuclear symmetry energy E_{sym} and the
slope parameter *L*. The
analysis is performed within the microscopic Brueckner--Hartree--Fock
approach using the Argonne V18 potential plus the Urbana IX three-body
force. We find that the main contribution
to E_{sym} and *L* comes from the tensor
component of the nuclear force.

5:00PM

**The ASY-EOS experiment at
GSI: investigating symmetry energy at supra-saturation densities**, P. Russotto, *INFN-LNS
& Università di Catania, Italy* − The elliptic-flow ratio
of neutrons with respect to protons or light complex particles in
reactions of neutron rich heavy-ions at intermediate energies is
proposed as an observable sensitive to the strength of the symmetry
term in the nuclear equation of state at supra-saturation densities. The results obtained from the existing FOPI/LAND
data for ^{197}Au+^{197}Au collisions at 400
MeV/nucleon in comparison with the UrQMD model favours a moderately
soft symmetry term but suffer from a considerable statistical
uncertainty [1]. In order to obtain an
improved data set for Au+Au collisions and to extend the study to other
systems, a new experiment was carried out at the GSI laboratory by the
ASY-EOS collaboration in May 2011. The
flows of neutrons, protons and light complex particles were measured
for ^{197}Au+^{197}Au, ^{96}Ru+^{96}Ru,
and ^{96}Zr+^{96}Zr collisions at 400 MeV/nucleon
using the LAND neutron detector, the forward part of CHIMERA device,
the Aladin ToF-Wall, the Si-CsI Krakow Array and the Microball
detector. First results will be reported.

[1]
P. Russotto *et al.*, Phys. Lett. B **697**
(2011) 471.

5:20PM