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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
 
Creator SAHU, N
SANKAR, SU
 
Subject left-right symmetry
lepton number
non-conservation
unified model
violation
baryogenesis
parity
oscillations
constraints
baryon
 
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.
 
Publisher AMERICAN PHYSICAL SOC
 
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
 
Type Article
 
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
 
Language en