Fermion masses, leptogenesis and supersymmetric SO (10) unification
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Fermion masses, leptogenesis and supersymmetric SO (10) unification

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Fermion masses, leptogenesis and supersymmetric SO (10) unification

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Romao, J. C.; Tórtola Baixauli, María Amparo Perfil; Hirsch, Martin; Furtado Valle, José Wagner Perfil
This document is a artículoDate2008

Este documento está disponible también en : http://hdl.handle.net/10550/37376
Current neutrino oscillation data indicate the existence of two large lepton mixing angles, while Kobayashi-Maskawa matrix elements are all small. Here we show how supersymmetric SO(10) with extra chiral singlets can easily reconcile large lepton mixing angles with small quark mixing angles within the framework of the successful Fritzsch ansatz. Moreover, we show how this is fully consistent with the thermal leptogenesis scenario, avoiding the so-called gravitino problem. A sizable asymmetry can be generated at scales as low as possible within the leptogenesis mechanism. We present our results in terms of the leptonic CP violation parameter that characterizes neutrino oscillations.

    Romao, J. C. Tórtola Baixauli, María Amparo Hirsch, Martin Furtado Valle, José Wagner 2008 Fermion masses, leptogenesis and supersymmetric SO (10) unification Physical Review D 77 5 055002
http://dx.doi.org/10.1103/PhysRevD.77.055002

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