Simple Description of Pion-Pion Scattering to 1 GeV

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dc.creatorHarada, Masayasu
dc.creatorSannino, Francesco
dc.creatorSchechter, Joseph
dc.date1995-11-16
dc.date.accessioned2026-07-07T10:33:16Z
dc.date.available2026-07-07T10:33:16Z
dc.descriptionMotivated by the 1/Nc expansion, we present a simple model of pion-pion scattering as a sum of a `current-algebra' contact term and resonant pole exchanges. The model preserves crossing symmetry as well as unitarity up to 1.2 GeV. Key features include chiral dynamics, vector meson dominance, a broad low energy scalar (sigma) meson and a `Ramsauer-Townsend' mechanism for the understanding of the 980 MeV region. We discuss in detail the `regularization' (corresponding to rescattering effects) necessary to make all these nice features work.
dc.description35 pages (LaTeX), 13 PostScript figures are included as uuencoded-compressed-tar
dc.identifierhttps://arxiv.org/abs/hep-ph/9511335
dc.identifierhttp://arxiv.org/abs/hep-ph/9511335
dc.identifierPhys.Rev.D54:1991-2004,1996
dc.identifierdoi:10.1103/PhysRevD.54.1991
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179049
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleSimple Description of Pion-Pion Scattering to 1 GeV
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