Pion scattering revisited
/ Authors
/ Abstract
Chiral Ward identities lead to consistent accounting for the σ’s width in the linear sigma model’s Feynman rules. Reanalysis of pion scattering data at threshold imply a mass for the σ of 600−100+200 MeV.
Journal: arXiv: High Energy Physics - Phenomenology
DOI: 10.1063/1.1301413