Pion--Nucleon Scattering in a New Approach to Chiral Perturbation Theory

Simple item page
dc.creatorEllis, Paul J.
dc.creatorTang, Hua-Bin
dc.date1997-09-15
dc.date1998-06-11
dc.date.accessioned2026-07-07T11:09:40Z
dc.date.available2026-07-07T11:09:40Z
dc.descriptionWe study pion--nucleon scattering with a chiral lagrangian of pions, nucleons, and $Δ$-isobars. The scattering amplitude is evaluated to one-loop $Q^3$ order, where $Q$ is a generic small momentum, using a new approach which is equivalent to heavy baryon chiral perturbation theory. We obtain a good fit to the experimental phase shifts for pion center-of-mass kinetic energies up to 100 MeV. A sigma term greater than 45 MeV is favored, but the value is not well determined.
dc.description46 pages, RevTex, 14 figures and 2 tables, minor changes for publication
dc.identifierhttps://arxiv.org/abs/hep-ph/9709354
dc.identifierhttp://arxiv.org/abs/hep-ph/9709354
dc.identifierPhys.Rev.C57:3356-3375,1998
dc.identifierdoi:10.1103/PhysRevC.57.3356
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190548
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titlePion--Nucleon Scattering in a New Approach to Chiral Perturbation Theory
dc.typetext

Files

Collections

arXiv