Hierarchical Neutrinos and Supersymmetric Inflation

Details Hierarchical Neutrinos and Supersymmetric Inflation Hierarchical Neutrinos and Supersymmetric Inflation

1999-03-29

arxiv.org/abs/hep-ph/9903511v2

Phys.Lett.B459:482-488,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages (including 2 figures), Revtex, minor corrections

Scientific paper

10.1016/S0370-2693(99)00697-8

A moderate extension of MSSM based on a left-right symmetric gauge group, within which hybrid inflation is `naturally' realized, is discussed. The mu problem is solved via a Peccei-Quinn symmetry. Light neutrinos acquire hierarchical masses by the seesaw mechanism. They are taken from the small angle MSW resolution of the solar neutrino puzzle and the SuperKamiokande data. The range of parameters consistent with maximal nu_mu-nu_tau mixing and the gravitino constraint is determined. The baryon asymmetry of the universe is generated through a primordial leptogenesis. The subrange of parameters, where the baryogenesis constraint is also met, is specified. The required values of parameters are more or less `natural'.

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