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arXiv · 1004.2546

On fast CP violating interactions in leptogenesis

Chee Sheng Fong·J. Racker
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Abstract

We show that when the relevant CP violating interactions in leptogenesis are fast, the different matter density asymmetries are determined at each instant by a balance condition between the amount of asymmetry being created and destroyed. This fact allows to understand in a simple way many features of leptogenesis in the strong washout regime. In particular, we find some non-trivial effects of flavour changing interactions that conserve lepton number, which are specially relevant in models for leptogenesis that rely heavily on flavour effects.

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Chee Sheng Fong, J. Racker. 2010-04-15. On fast CP violating interactions in leptogenesis. https://doi.org/10.1088/1475-7516/2010/07/001

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