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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4719

Title: Bounds on neutrino masses from leptogenesis in type-II seesaw models
Authors: SAHU, N
SANKAR, SU
Keywords: left-right symmetry
lepton number
non-conservation
unified model
violation
baryogenesis
parity
oscillations
constraints
baryon
Issue Date: 2005
Publisher: AMERICAN PHYSICAL SOC
Citation: PHYSICAL REVIEW D, 71(1), -
Abstract: 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.
URI: 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
ISSN: 0556-2821
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