Standard model baryon number violation seeded by black holes

We show that black holes with a Schwarzschild radius of the order of the electroweak scale may act as seeds for the baryon number violation within the Standard model via sphaleron transitions. The corresponding rate is faster than the one in the pure vacuum and baryon number violation around black h...

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Bibliographic Details
Published in:Physics letters. B 2021-08, Vol.819, p.136454, Article 136454
Main Authors: De Luca, V., Franciolini, G., Kehagias, A., Riotto, A.
Format: Article
Language:English
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Summary:We show that black holes with a Schwarzschild radius of the order of the electroweak scale may act as seeds for the baryon number violation within the Standard model via sphaleron transitions. The corresponding rate is faster than the one in the pure vacuum and baryon number violation around black holes can take place during the evolution of the universe after the electroweak phase transition. We show however that this does not pose any threat for a pre-existing baryon asymmetry in the universe.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2021.136454