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arXiv · hep-ph/9406242

Damping Rate of a Yukawa Fermion at Finite Temperature

Markus H. Thoma
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Abstract

The damping of a massless fermion coupled to a massless scalar particle at finite temperature is considered using the Braaten-Pisarski resummation technique. First the hard thermal loop diagrams of this theory are extracted and effective Green's functions are constructed. Using these effective Green's functions the damping rate of a soft Yukawa fermion is calculated. This rate provides the most simple example for the damping of a soft particle. To leading order it is proportional to $g^2T$, whereas the one of a hard fermion is of higher order.

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Markus H. Thoma. 1994-06-07. Damping Rate of a Yukawa Fermion at Finite Temperature. https://doi.org/10.1007/bf01556376

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