On the Anomalous Electroweak Baryon Number Nonconservation in the Early Universe
Jan, 19857 pages
Published in:
- Phys.Lett.B 155 (1985) 36
- Published: 1985
Report number:
- IC/85/8
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Abstract: (Elsevier)
We estimate the rate of the anomalous electroweak baryon-number non-conserving processes in the cosmic plasma and find that it exceeds the expansion rate of the universe at T > ( a few ) × 10 2 GeV. We study whether these processes wash out the baryon asymmetry of the universe (BAU) generated at some earlier state (say, at GUT temperatures). We also discuss the possibility of BAU generation by the electroweak processes themselves and find that this does not take place if the electroweak phase transition is of second order. No definite conclusion is made for the strongly first-order phase transition. We point out that the BAU might be attributed to the anomalous decays of heavy ( M F ⪆ M W /α W ) fermions if these decays are unsuppressed.- cosmological model
- critical phenomena
- baryon number: violation
- baryon: asymmetry
- electroweak interaction
- fermion number: violation
- thermodynamics
- heavy lepton: decay
- decay: heavy lepton
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