Damping rates in the MSSM and electroweak baryogenesis

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-loo...

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Detalles Bibliográficos
Autores principales: Elmfors, Per, Enqvist, Kari, Riotto, Antonio, Vilja, Iiro
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00169-0
http://cds.cern.ch/record/366371
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author Elmfors, Per
Enqvist, Kari
Riotto, Antonio
Vilja, Iiro
author_facet Elmfors, Per
Enqvist, Kari
Riotto, Antonio
Vilja, Iiro
author_sort Elmfors, Per
collection CERN
description 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 $\gamma_{\Ht}\simeq 0.025T$, $\gamma_{\Wt}\simeq 0.065T$. The contribution from scattering with scalars is relatively small. Implications for baryogenesis are also discussed.
id cern-366371
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3663712023-03-14T18:44:05Zdoi:10.1016/S0370-2693(99)00169-0http://cds.cern.ch/record/366371engElmfors, PerEnqvist, KariRiotto, AntonioVilja, IiroDamping rates in the MSSM and electroweak baryogenesisParticle Physics - PhenomenologyWe 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 $\gamma_{\Ht}\simeq 0.025T$, $\gamma_{\Wt}\simeq 0.065T$. The contribution from scattering with scalars is relatively small. Implications for baryogenesis are also discussed.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 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 H ̃ ≃0.025T , γ W ̃ ≃0.065T . The contribution from scattering with scalars is relatively small. Implications for baryogenesis are also discussed.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 $\gamma_{\Ht}\simeq 0.025T$, $\gamma_{\Wt}\simeq 0.065T$. The contribution from scattering with scalars is relatively small. Implications for baryogenesis are also discussed.hep-ph/9809529HIP-1998-64-THSU-ITP-98-18TURKU-FL-P30-98CERN-TH-98-313CERN-TH-98-313HIP-1998-64-THSU-ITP-98-18TURKU-FL-P-30oai:cds.cern.ch:3663711998-09-28
spellingShingle Particle Physics - Phenomenology
Elmfors, Per
Enqvist, Kari
Riotto, Antonio
Vilja, Iiro
Damping rates in the MSSM and electroweak baryogenesis
title Damping rates in the MSSM and electroweak baryogenesis
title_full Damping rates in the MSSM and electroweak baryogenesis
title_fullStr Damping rates in the MSSM and electroweak baryogenesis
title_full_unstemmed Damping rates in the MSSM and electroweak baryogenesis
title_short Damping rates in the MSSM and electroweak baryogenesis
title_sort damping rates in the mssm and electroweak baryogenesis
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00169-0
http://cds.cern.ch/record/366371
work_keys_str_mv AT elmforsper dampingratesinthemssmandelectroweakbaryogenesis
AT enqvistkari dampingratesinthemssmandelectroweakbaryogenesis
AT riottoantonio dampingratesinthemssmandelectroweakbaryogenesis
AT viljaiiro dampingratesinthemssmandelectroweakbaryogenesis

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