Bounds on neutrino masses from leptogenesis in type-II seesaw models
DSpace at IIT Bombay
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Title |
Bounds on neutrino masses from leptogenesis in type-II seesaw models
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Creator |
SAHU, N
SANKAR, SU |
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Subject |
left-right symmetry
lepton number non-conservation unified model violation baryogenesis parity oscillations constraints baryon |
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Description |
The presence of the triplet Delta(L) in left-right symmetric theories leads to type-II seesaw mechanism for the neutrino masses. In these models, assuming a normal mass hierarchy for the heavy Majorana neutrinos, we derive a lower bound on the mass of the lightest of heavy Majorana neutrinos from the leptogenesis constraint. From this bound we establish a consistent picture for the hierarchy of heavy Majorana neutrinos in a class of left-right symmetric models in which we identify the neutrino Dirac mass matrix with that of Fritzsch type charged lepton mass matrix. It is shown that these values are compatible with the current neutrino oscillation data.
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Publisher |
AMERICAN PHYSICAL SOC
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Date |
2011-07-17T11:37:49Z
2011-12-26T12:50:17Z 2011-12-27T05:36:29Z 2011-07-17T11:37:49Z 2011-12-26T12:50:17Z 2011-12-27T05:36:29Z 2005 |
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Type |
Article
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Identifier |
PHYSICAL REVIEW D, 71(1), -
0556-2821 http://dx.doi.org/10.1103/PhysRevD.71.013006 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4719 http://hdl.handle.net/10054/4719 |
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Language |
en
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