The Linear Sigma Model at Work: Succesful Postdictions for Pion Scattering

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dc.creatorLucio, J. L.
dc.creatorNapsuciale, M.
dc.creatorRuiz-Altaba, M.
dc.date1999-03-20
dc.date.accessioned2026-07-07T04:06:40Z
dc.date.available2026-07-07T04:06:40Z
dc.descriptionWe enforce chiral Ward identities on the vertices of the linear sigma model to take into account the width of the scalar sigma, considered as a true physical resonance. We consider pion scattering at very low energies and, from a fit to the measured phase shifts in the various angular momentum and isospin channels, conclude a mass for the sigma of 600+200-100 MeV. Its width turns out to be of the same size.
dc.identifierhttps://arxiv.org/abs/hep-ph/9903420
dc.identifierhttp://arxiv.org/abs/hep-ph/9903420
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/48859
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Linear Sigma Model at Work: Succesful Postdictions for Pion Scattering
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