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Pion damping width from SU(2) x SU(2) NJL model

D. Blaschke·M. K. Volkov·V. L. Yudichev
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Abstract

Within the framework of the NJL model, we investigate the modification of the pion damping width in a hot pion gas for temperatures ranging from 0 to 180 MeV. The pion is found to broaden noticeably at T > 60 MeV. Near the chiral phase transition T ~ 180 MeV, the pion width is saturated and amounts to 70 MeV. The main contribution to the width comes from pion-pion collisions. Other contributions are found negligibly small.

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D. Blaschke, M. K. Volkov, V. L. Yudichev. 2003-03-14. Pion damping width from SU(2) x SU(2) NJL model. https://doi.org/10.1134/1.1634332

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