Δ effects in pion-nucleon scattering and the strength of the two-pion-exchange three-nucleon interaction

V. R. Pandharipande, D. R. Phillips, U. Van Kolck

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

We consider the relationship between p-wave πN scattering and the strength of the p-wave two-pion-exchange three-nucleon interaction (TPE3NI). We explain why effective theories that do not contain the Delta resonance as an explicit degree of freedom tend to overestimate the strength of the TPE3NI. The overestimation can be remedied by higher-order terms in these "Delta-less" theories, but such terms are not yet included in state-of-the-art chiral effective field theory calculations of the nuclear force. This suggests that these calculations can predict the strength of the TPE3NI only to an accuracy of ±25%.

Original languageEnglish (US)
Article number064002
JournalPhysical Review C - Nuclear Physics
Volume71
Issue number6
DOIs
StatePublished - Jun 2005

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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