Primordial Lepton Oscillations and Baryogenesis

Sep 16, 2016
10 pages
Published in:
  • JHEP 11 (2016) 010
  • Published: Nov 2, 2016
e-Print:
Report number:
  • KEK-TH-1932,
  • MAD-TH-16-06

Citations per year

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Abstract: (Springer)
The baryon asymmetry of the Universe should have been produced after the inflation era. We consider the possibility that the asymmetry is generated by the flavor oscillations in the reheating process after inflation, so that the baryon asymmetry is realized already at the beginning of the radiation dominated era. In the seesaw model, we show that the propagators of the left-handed leptons generically have flavor mixings in the thermal background, that can generate flavor-dependent lepton asymmetry through the CP violation in the oscillation phenomena. The flavor dependent rates for the wash-out process can leave the net asymmetry today.
Note:
  • 10 pages; published version(v2)
  • Cosmology of Theories beyond the SM
  • CP violation
  • Neutrino Physics
  • baryon: asymmetry
  • lepton: asymmetry
  • lepton: oscillation
  • flavor: oscillation
  • flavor: dependence
  • flavor: mixing
  • background: thermal