Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis

Details Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis

1999-01-25

arxiv.org/abs/hep-ph/9901406v1

Phys.Lett.B460:359-364,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

LATEX, 12 pages

Scientific paper

10.1016/S0370-2693(99)00755-8

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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