Level Crossing of N* (1535)-hole and η Modes and Partial Restoration of Chiral Symmetry in η-mesic Nuclei

摘要：

We investigate the properties of the η-nucleus interaction by postulating the N* (1535) dominance for ηN system.Since the mass gap of N* and N is very close to the η meson mass,there is the possibility of the level crossing between the N*-h and η modes in finite density.We postulate the N* (1535) resonance for the ηN system and consider quite distinct N* properties in finite density which are predicted by two independent chiral models.We find that we can obtain clearer information on the in-medium N* properties and also on the η-nucleus interaction through the formation of the η-mesic nuclei by (π,N) reactions under the appropriate experimental conditions,which can be performed at existing and/or forthcoming facilities like J-PARC.

关键词： A eta-mesic nuclei N* (1535) in medium partial restoration of chiral symmetry

作者: H.Nagahiro D.Jido E.E.Kolomeitsev S.Hirenzaki

作者单位: Research Center for Nuclear Physics (RCNP),Osaka University,Ibaraki,Osaka 567-0047,Japan Yukawa Institute for Theoretical Physics,Kyoto University,Kyoto 606-8502,Japan School of Physics and Astronomy,University of Minnesota,116 Church Str SE,Minneapolis 55455,USA;Gese Department of Physics,Nara Womens University,Nara 630-8506,Japan

会议类型: 国际会议

会议名称: 3rd China-Japan-Korea Hadron and Nuclear Physics 2008 Symposium(第三届中日韩强子物理与核物理研讨会)

会议地点: 兰州

会议语种:英文

页码: 100-103

在线出版日期: 2008-06-23（万方平台首次上网日期，不代表论文的发表时间）