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arXiv · hep-ph/9809529

Damping rates in the MSSM and electroweak baryogenesis

Per Elmfors·Kari Enqvist·Antonio Riotto·Iiro Vilja
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Abstract

We present an analysis of the thermalization rate of Higgsinos and winos based on the imaginary part of the two-point Green function in the {\it unbroken} phase of the MSSM. We use improved propagators including resummation of hard thermal loops and the thermalization rate is computed at the one-loop level in the high temperature approximation. We find that the damping is typically dominated by scattering with gauge bosons, resulting in a damping rate of about $γ_{\Ht}\simeq 0.025T$, $γ_{\Wt}\simeq 0.065T$. The contribution from scattering with scalars is relatively small. Implications for baryogenesis are also discussed.

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Per Elmfors, Kari Enqvist, Antonio Riotto, Iiro Vilja. 1998-09-25. Damping rates in the MSSM and electroweak baryogenesis. https://doi.org/10.1016/s0370-2693(99)00169-0

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