eta-Nucleus interactions and in-medium properties of N*(1535) in chiral models

Details eta-Nucleus interactions and in-medium properties of N*(1535) in chiral models eta-Nucleus interactions and in-medium properties of N*(1535) in chiral models

2003-04-21

arxiv.org/abs/nucl-th/0304068v2

Phys.Rev. C68 (2003) 035205

Physics

Nuclear Physics

Nuclear Theory

24 pages, 8 figures

Scientific paper

10.1103/PhysRevC.68.035205

The properties of eta-nucleus interaction and their experimental consequences are investigated with eta-nucleus optical potentials obtained by postulating the N*(1535) dominance for eta-N system. The N*(1535) properties in nuclear medium are evaluated by two kinds of chiral effective models based on distinct pictures of N*(1535). We find that these two models provide qualitatively different optical potentials of the eta meson, reflecting the in-medium properties of N*(1535) in these models. In order to compare these models in physical observables, we calculate spectra of (d,3He) reactions for the eta mesic nucleus formation with various kinds of target nuclei. We show that the (d,3He) spectra obtained in these models are significantly different and are expected to be distinguishable in experiments.

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