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Energy and width of. sigma. hyperon in nuclear matter

Journal Article · · Phys. Rev., C; (United States)
The width GAMMA and the potential well depth -V/sub ..sigma../ of the ..sigma.. hyperon in nuclear matter are calculated with the help of the Brueckner theory. Results obtained for GAMMA and V/sub ..sigma../ with model D of the Nijmegen baryon-baryon interaction and simple estimates of GAMMA in terms of the cross section for the ..sigma../sup -/p..--> lambda..n process are consistent with empirical estimates. It is shown that the exclusion principle and dispersive effects strongly suppress the ..sigma..N..--> lambda..N process in nuclear matter and are capable of reducing GAMMA to values suggested by recent (K,..pi..) experiments.
Research Organization:
Institute of Nuclear Research, Hoza 69, PL-00-681 Warsaw, Poland
OSTI ID:
6521093
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 23:4; ISSN PRVCA
Country of Publication:
United States
Language:
English