|
Physics 1999
Pion Scattering RevisitedDOI: 10.1063/1.1301413 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.
|