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

2); D. Blaschke (1; Dubna; Germany; (2) JINR; M. K. Volkov (2); Russia); V. L. Yudichev (2) ((1) Rostock Univ.

arxiv: nucl-th/0303034 · v1 · submitted 2003-03-14 · ⚛️ nucl-th

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

D. Blaschke (1 , 2) , M. K. Volkov (2) , V. L. Yudichev (2) ((1) Rostock Univ. , Germany; (2) JINR , Dubna , Russia) This is my paper

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keywords pionwidthdampingfoundmodelamountsbroadenchiral

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

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