Limits on light primordial black holes from high-scale leptogenesis
| Autor: | Calabrese, Roberta, Chianese, Marco, Gunn, Jacob, Miele, Gennaro, Morisi, Stefano, Saviano, Ninetta |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys.Rev.D 107 (2023) 12, 123537 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.107.123537 |
| Popis: | We investigate the role that the evaporation of light primordial black holes may have played in the production of the baryon asymmetry of the Universe through the high-scale leptogenesis. In particular, for mass of primordial black hole in the range [$10^6$-$10^9$] g, we find a dilution of thermally generated lepton asymmetry via entropy injection in the primordial plasma after the sphaleron freeze-out. As a consequence, we can put strong constraints on the primordial black hole parameters, showing the mutual exclusion limits between primordial black holes and high-scale leptogenesis. Remarkably, we point out an interplay between the upper bound on the initial abundance of primordial black holes and the active neutrino mass scale. Comment: 11 pages, 6 figures |
| Databáze: | arXiv |
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