Reheating temperature independence of cosmological baryon asymmetry in Affleck-Dine leptogenesis
Feb, 200122 pages
Published in:
- Phys.Rev.D 63 (2001) 123513
e-Print:
- hep-ph/0102187 [hep-ph]
Report number:
- UT-924
Citations per year
Abstract:
In this paper we point out that the cosmological baryon asymmetry in our universe is generated almost independently of the reheating temperature in Affleck-Dine leptogenesis and it is determined mainly by the mass of the lightest neutrino, , in a wide range of the reheating temperature -- GeV. The present baryon asymmetry predicts the in a narrow region, -- eV. Such a small mass of the lightest neutrino leads to a high predictability on the mass parameter contributing to the neutrinoless double beta decay. We also propose an explicit model in which such an ultralight neutrino can be naturally obtained.- baryon: asymmetry
- lepton: production
- neutrino: mass
- double-beta decay: (0neutrino)
- field theory: scalar
- inflation
- neutrino: oscillation
- neutrino: solar
- numerical calculations: interpretation of experiments
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