Delta Effects in Pion-Nucleon Scattering and the Strength of the Two-Pion-Exchange Three-Nucleon Interaction

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dc.creatorPandharipande, V. R.
dc.creatorPhillips, D. R.
dc.creatorvan Kolck, U.
dc.date2005-01-25
dc.date.accessioned2026-07-07T13:05:14Z
dc.date.available2026-07-07T13:05:14Z
dc.descriptionWe consider the relationship between P-wave pi-N 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 EFT calculations of the nuclear force. This suggests that these calculations can only predict the strength of the TPE3NI to an accuracy of +/-25%.
dc.description13 pages, 2 figures, uses epsf
dc.identifierhttps://arxiv.org/abs/nucl-th/0501061
dc.identifierhttp://arxiv.org/abs/nucl-th/0501061
dc.identifierPhys.Rev.C71:064002,2005
dc.identifierdoi:10.1103/PhysRevC.71.064002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227425
dc.subjectNuclear Theory
dc.titleDelta Effects in Pion-Nucleon Scattering and the Strength of the Two-Pion-Exchange Three-Nucleon Interaction
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