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Phys. Rev. C 53, 385 - 389 (1996)

S-wave resonance coupled-channel approach to the reactions π-+p→η+n and K-+p→η+Λ, and a determination of the ηn and ηΛ scattering lengths

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V. V. Abaev
St. Petersburg Institute of Nuclear Physics, Gatchina, Russia

B. M. K. Nefkens
University of California, Los Angeles, California 90095

Received 21 November 1994

The total cross sections of the reactions π-+p→η+n and K-+p→η+Λ near threshold have been calculated in an S-wave resonance coupled-channel approach. The ηN scattering length is [0.621±0.040+i(0.306±0.034)] fm and the ηΛ scattering length is [0.64±0.29+i(0.80±0.30)] fm. The large value of the ηΛ scattering length leads us to speculate on the possible existence of η-mesic hypernuclei. © 1996 The American Physical Society.


©1996 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.53.385
DOI: 10.1103/PhysRevC.53.385
PACS: 13.75.Gx, 13.75.Jz, 21.80.+a, 25.80.-e

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