Neutrino Masses, Baryogenesis and Bilinear R-parity Violation

Details Neutrino Masses, Baryogenesis and Bilinear R-parity Violation Neutrino Masses, Baryogenesis and Bilinear R-parity Violation

2003-07-31

arxiv.org/abs/hep-ph/0307385v1

Phys.Lett. B582 (2004) 64-72

Physics

High Energy Physics

High Energy Physics - Phenomenology

15pages, revtex4, 2figures

Scientific paper

10.1016/j.physletb.2003.12.028

We consider the impact of cosmological $B-L$ constraints on supersymmetric standard models with bilinear breaking of R-parity. In order to avoid erasing any primordial baryon or lepton asymmetry above the electroweak scale, $B-L$ violation for at least one generation should be sufficiently small. Working in the context of models with non--universal soft supersymmetry breaking masses, we show how the above cosmological constraint can be satisfied while simultaneously providing a neutrino mass matrix required by current data.

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