The three-body force, off-shell πN scattering and binding energies in nuclear matter

Sidney A. Coon, Michael D. Scadron, Bruce R. Barrett

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

We re-examine the off-shell πN amplitude occurring in the two-pion exchange three-body force, subject to all of the constraints of current algebra. This amplitude is not dominated by the Δ(1231) isobar; instead, if the σ-term is known, it can be determined from on-shell scattering. The resulting contribution to the binding energy of nuclear matter is small but attractive, varying from 0.2 MeV to 1.5 MeV, corresponding to πN σ-terms of 70 MeV to 40 MeV.

Original languageEnglish (US)
Pages (from-to)467-480
Number of pages14
JournalNuclear Physics, Section A
Volume242
Issue number3
DOIs
StatePublished - May 5 1975

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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