Neutrino masses in supersymmetry: R-parity and leptogenesis

Ma, Ernest ; Raidal, Martti ; Sarkar, Utpal (1999) Neutrino masses in supersymmetry: R-parity and leptogenesis Physics Letters B, 460 (3-4). pp. 359-364. ISSN 0370-2693

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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 also point out that all models of radiative generation of neutrino masses suffer from the same problem. 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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:45383
Deposited On:28 Jun 2011 05:13
Last Modified:18 May 2016 01:39

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