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arXiv · 0903.3473

Annihilating Leptogenesis

Pei-Hong Gu·Utpal Sarkar
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Abstract

Leptogenesis is usually realized through decays of heavy particles. In this article we consider another possibility of generating a lepton asymmetry through annihilations of heavy particles. We demonstrate our idea with a realistic extension of the standard model containing a heavy doublet and a light singlet scalars in addition to right-handed neutrinos and Higgs triplets required for type-I+II seesaw of neutrino masses. We also clarify that this annihilating leptogenesis scenario can be naturally embedded in more fundamental theories, like left-right symmetric models or grand unified theories.

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Pei-Hong Gu, Utpal Sarkar. 2009-07-16. Annihilating Leptogenesis. https://doi.org/10.1016/j.physletb.2009.07.029

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