The S11-P11 phase shifts of pion-nucleon scattering

Robert H. Barron, Jamil Daboul

Research output: Contribution to journalArticlepeer-review

Abstract

The S11 and P11 partial amplitude is calculated using the N/D method. The present calculation differs from the previous ones in the handling of the divergent behavior of the forces due to first-order diagrams, by parameterizing the short-range forces, and in the way of including inelasticity. We obtain the nucleon as a bound state with correct mass and residue and the correct S11 and P11 scattering lengths. The calculated S-wave and P-wave phase shifts and absorption coefficients are in substantial agreement with those from the CERN Theoretical and Almehed-Lovelace phase shift analyses.

Original languageEnglish
Pages (from-to)399-406
Number of pages8
JournalZeitschrift für Physik A: Atoms and Nuclei
Volume274
Issue number4
DOIs
StatePublished - 1 Dec 1975

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