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arXiv · hep-ph/9904224

Pion Scattering Revisited

M. Ruiz-Altaba·J. L. Lucio·M. Napsuciale
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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.

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M. Ruiz-Altaba, J. L. Lucio, M. Napsuciale. 1999-04-05. Pion Scattering Revisited. https://doi.org/10.1063/1.1301413

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