arXiv:hep-ph/9904224·v1·High Energy Physics — Phenomenology
Pion Scattering Revisited
M. Ruiz-Altaba🇲🇽 · J.L. Lucio🇲🇽 · M. Napsuciale🇲🇽
Abstract
Chiral Ward identities lead to consistent accounting for the sigma's width in the linear sigma model's Feynman rules. Reanalysis of pion scattering data at threshold imply a mass for the sigma of 600+ 200 - 100 MeV.
Comments: latex; VIII EMPC (Oaxaca, Nov 98) Proceedings