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arXiv · hep-ph/9901406

Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis

Ernest Ma·Martti Raidal·Utpal Sarkar
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Abstract

In the supersymmetric standard model of particle interactions, R-parity nonconservation is often invoked to obtain nonzero neutrino masses. We point out here that such interactions of the supersymmetric particles would erase any pre-existing lepton or baryon asymmetry of the universe before the electroweak phase transition through the $B + L$ violating sphaleron processes. We then show how neutrino masses may be obtained in supersymmetry (assuming R-parity conservation) together with successful leptogenesis and predict the possible existence of new observable particles.

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Ernest Ma, Martti Raidal, Utpal Sarkar. 1999-01-25. Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis. https://doi.org/10.1016/s0370-2693(99)00755-8

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