Electroweak baryogenesis in the adiabatic limit

Michael Dine, Scott Thomas

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Electroweak baryogenesis can occur in the "adiabatic limit", in which expanding bubbles of true vacuum are assumed to have rather thick walls and be slowly moving. Here the problem of calculating the baryon asymmetry in this limit is reconsidered. A simple prescription for obtaining the relevant kinetic equations is given. An additional suppression beyond that usually assumed is found. This arises because the generation of an asymmetry requires violation of approximately conserved currents by Higgs expectation values, which are small near the front of the walls. As applications, the asymmetries in multi-Higgs models and the minimal supersymmetric standard model are estimated to be proportional to α8w and α6w respectively. Also, in this limit the baryon asymmetry in the minimal standard model is extraordinary small.

Original languageEnglish (US)
Pages (from-to)73-78
Number of pages6
JournalPhysics Letters B
Issue number1-2
StatePublished - May 26 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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