Baryogenesis at low reheating temperatures

Sacha Davidson, Marta Losada, Antonio Riotto

Research output: Contribution to journalArticlepeer-review

Abstract

We note that the maximum temperature during reheating can be much greater than the reheating temperature Tr at which the universe becomes radiation dominated. We show that the standard model anomalous (B+L)-violating processes can therefore be in thermal equilibrium for 1 GeV ≲ Tr≪ 100 GeV . Electroweak baryogenesis could work and the traditional upper bound on the Higgs mass coming from the requirement of the preservation of the baryon asymmetry may be relaxed. Alternatively, the baryon asymmetry may be reprocessed by sphaleron transitions either from a (B-L) asymmetry generated by the Affleck-Dine mechanism or from a chiral asymmetry between eR and eL in a B-L=0 universe.

Original languageEnglish (US)
Pages (from-to)4284-4287
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number19
DOIs
StatePublished - 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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