Gu, Pei-Hong ; Sarkar, Utpal (2010) Leptogenesis with linear, inverse or double seesaw Physics Letters B, 694 (3). pp. 226-232. ISSN 0370-2693
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.physletb.2010.09.062
Abstract
The left-right symmetric model with doublet and bi-doublet Higgs scalars can accommodate linear, inverse or double seesaw for generating small neutrino masses in the presence of three singlet fermions. If the singlet fermions have small Majorana masses, they can form three pairs of quasi-degenerate Majorana fermions with three right-handed neutrinos. The decays of the quasi-degenerate Majorana fermions can realize the resonant leptogenesis. Alternatively, the right-handed neutrinos can obtain seesaw suppressed Majorana masses if the singlet fermions are very heavy. In this case leptogenesis, with or without resonant effect, is allowed in the decays of the right-handed neutrinos.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Leptogenesis; Seesaw; Left–Right Symmetry |
ID Code: | 95788 |
Deposited On: | 07 Dec 2012 12:02 |
Last Modified: | 07 Dec 2012 12:02 |
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