Phys. Rev. Lett. 54, 865–868 (1985)Off-shell model for threshold pionic η production on a nucleon and for ηN scatteringReceived 29 October 1984; published in the issue dated 4 March 1985 An off-shell isobar model for πN→πN, πN→ηN, and ηN→ηN t matrices is presented. The πN, ηN, and πΔ+(ππN) channels are treated in a coupled-channel formalism. We are able to determine various vertex functions of the model by using only πN (complex) phase shifts in S11, P11, D13, and P33 partial waves. The model gives good predictions for π-p→ηn cross sections. It also predicts an attractive S-wave ηN interaction. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.54.865
DOI:
10.1103/PhysRevLett.54.865
PACS:
13.75.-n
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