Chirally motivated separable potential model for eta N amplitudes

0422070 - ÚJF 2014 RIV NL eng J - Journal Article
Cieplý, Aleš - Smejkal, J.
Chirally motivated separable potential model for eta N amplitudes.
Nuclear Physics. A. Roč. 919, DEC (2013), s. 46-66. ISSN 0375-9474. E-ISSN 1873-1554
R&D Projects: GA ČR(CZ) GAP203/12/2126
Institutional support: RVO:61389005
Keywords : Chrial model * eta-nucleon amplitude * Baryon resonances
Subject RIV: BE - Theoretical Physics
Impact factor: 2.499, year: 2013

We analyze the eta N interaction using a coupled channel separable potential model that implements the chiral symmetry. The model predicts an eta N scattering length Ha(eta N) approximate to 0.7 fm and in-medium subthreshold attraction most likely sufficient to generate eta-nuclear bound states. The energy dependence of the eta N amplitude and pole content of the model are discussed. An idea of the same origin of the baryon resonances N* (1535) and N*(1650) is presented.
Permanent Link: http://hdl.handle.net/11104/0228339