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        【1.12】Academic Lecture: A new mechanism of baryogenesis: leptogenesis via phase transition TEXT SIZE: A A A


Title: A new mechanism of baryogenesis: leptogenesis via phase transition

Speaker: Dr.Ye-Ling Zhou(周也铃)(Durham University, UK)

Time: 10:00AM, Jan.12 2017(Thursday)

Place: Theoretical Physics Division,319

Abstract: The speaker will talk about a new mechanism of baryogenesis (arXiv:1611.04817). It generates a lepton asymmetry via phase transition and partially converts it to abaryon asymmetry through sphaleron processes. It differs from the classical thermal leptogenesis in type-I seesaw, where the lepton asymmetry is generated through the decay of right-handed neutrinos. This mechanism does not specify any neutrino mass origins, but requires just a Weinberg operator and a CP-violating phase transition. It provides strong connections with low-energy neutrino experiments and leptonic flavour models.





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