On Quantum Effects in Soft Leptogenesis

Details On Quantum Effects in Soft Leptogenesis On Quantum Effects in Soft Leptogenesis

2008-06-18

arxiv.org/abs/0806.3077v2

JCAP 0808:008,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures. Replacement to match published version

Scientific paper

10.1088/1475-7516/2008/08/008

It has been recently shown that quantum Boltzman equations may be relevant for leptogenesis. Quantum effects, which lead to a time-dependent CP asymmetry, have been shown to be particularly important for resonant leptogenesis when the asymmetry is generated by the decay of two nearly degenerate states. In this work we investigate the impact of the use of quantum Boltzman equations in the framework ``soft leptogenesis'' in which supersymmetry soft-breaking terms give a small mass splitting between the CP-even and CP-odd right-handed sneutrino states of a single generation and provide the CP-violating phase to generate the lepton asymmetry.

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