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Journal of High Energy Physics

, 2016:10

First Online: 02 November 2016Received: 01 October 2016Accepted: 26 October 2016 Abstract

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.

KeywordsCosmology of Theories beyond the SM CP violation Neutrino Physics ArXiv ePrint: 1609.05028

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Author: Yuta Hamada - Ryuichiro Kitano

Source: https://link.springer.com/







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