Gu, Pei-Hong ; Hirsch, M. ; Sarkar, Utpal ; Valle, J. W. F. (2009) Neutrino masses, leptogenesis, and dark matter in a hybrid seesaw model Physical Review D - Particles, Fields, Gravitation and Cosmology, 79 (3). 033010_1-033010_4. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v79/i3/e033010
Related URL: http://dx.doi.org/10.1103/PhysRevD.79.033010
Abstract
We suggest a hybrid seesaw model where relatively "light" right-handed neutrinos give no contribution to the 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.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 45437 |
Deposited On: | 28 Jun 2011 05:31 |
Last Modified: | 18 May 2016 01:42 |
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