Combining the extended Linear Sigma Model with a parity doublet nucleon model, this paper predicts that most light meson masses drop in nuclear matter and favors a chiral invariant mass M0 around 0.8 GeV.
First Beam Observation and Near Future Plans at SPring-8 LEPS2 Experiments
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abstract
The first photon beam was successfully produced by laser Compton backscattering at the LEPS2 beamline, which was newly constructed at SPring-8 for the purpose to increase the beam intensity one order of magnitude more than that of the LEPS experiments and to achieve the large acceptance coverage with high resolution detectors. The BGOegg electromagnetic calorimeter with associated detectors are being set up at the LEPS2 experimental building for the physics programs, including the searches for $\eta$'-bound nuclei and highly excited baryon resonances. In parallel to the BGOegg experiments, the LEPS2 charged particle spectrometer will be prepared inside the 1 Tesla solenoidal magnet, transported from the BNL-E949 experiment.
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Comprehensive study of mass modifications of light mesons in nuclear matter in the three-flavor extended Linear Sigma Model
Combining the extended Linear Sigma Model with a parity doublet nucleon model, this paper predicts that most light meson masses drop in nuclear matter and favors a chiral invariant mass M0 around 0.8 GeV.