Journal Article

PUBDB-2021-04790

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On the wall velocity dependence of electroweak baryogenesis

Dorsch, G. C. (Corresponding author) ; Huber, S. J. (Corresponding author) ; Konstandin, T. (Corresponding author)DESY*

2021
IOP London

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Please use a persistent id in citations: doi:10.1088/1475-7516/2021/08/020  doi:10.3204/PUBDB-2021-04790

Report No.: DESY-21-089; arXiv:2106.06547

Abstract: We re-evaluate the status of supersonic electroweak baryogenesis using a generalized fluid Ansatz for the non-equilibrium distribution functions. Instead of truncating the expansion to first order in momentum, we allow for higher order terms as well, including up to 21 fluctuations. The collision terms are computed analytically at leading-log accuracy. We also point out inconsistencies in the standard treatments of transport in electroweak baryogenesis, arguing that one cannot do without specifying an Ansatz for the distribution function. We present the first analysis of baryogenesis using the fluid approximation to higher orders. Our results support the recent findings that baryogenesis may indeed be possible even in the presence of supersonic wall velocities.

Keyword(s): approximation: fluid ; baryogenesis ; electroweak interaction ; higher-order ; distribution function ; fluctuation ; velocity dependence

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project 390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Dorsch, G. C. (Corresponding author) ; Huber, S. J. ; Konstandin, T.DESY*
On the wall velocity dependence of electroweak baryogenesis
[10.3204/PUBDB-2021-02610]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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