Neutrino masses, leptogenesis, and dark matter in a hybrid seesaw model
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Neutrino masses, leptogenesis, and dark matter in a hybrid seesaw model

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Neutrino masses, leptogenesis, and dark matter in a hybrid seesaw model

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Gu, Pei-Hong; Hirsch, Martin; Sarkar, Utpal; Furtado Valle, José Wagner Perfil
Aquest document és un/a article, creat/da en: 2009
We suggest a hybrid seesaw model where relatively light right-handed neutrinos give no contribution to neutrino mass matrix due to a special symmetry. This allows their Yukawa couplings to the standard model particles to be relatively strong, so that the standard model Higgs boson can decay dominantly to a left- and a right-handed neutrino, leaving another stable right-handed neutrino as cold dark matter. In our model neutrino masses arise via the type-II seesaw mechanism, the Higgs triplet scalars being also responsible for the generation of the matter-antimatter asymmetry via the leptogenesis mechanism.

    Gu, Pei-Hong Hirsch, Martin Sarkar, Utpal Furtado Valle, José Wagner 2009 Neutrino masses, leptogenesis, and dark matter in a hybrid seesaw model Physical Review D 79 3 033010
http://dx.doi.org/10.1103/PhysRevD.79.033010
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