Type-II seesaw mass models and baryon asymmetry

Details Type-II seesaw mass models and baryon asymmetry Type-II seesaw mass models and baryon asymmetry

2006-12-12

arxiv.org/abs/hep-ph/0612143v1

Nucl.Phys.B765:142-153,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, no figure, accepted in Nuclear Physics B

Scientific paper

10.1016/j.nuclphysb.2006.12.002

We compute and also compare the contributions of canonical and noncanonical mass terms towards baryon asymmetry by considering type-II seesaw mass models of neutrinos: Degenerare(3 varieties), Normal hierarchical and Inverted hierarchical(2 varieties). We have shown that for particular choices of parameter '$\gamma$'(the so-called discriminator) for different neutrino mass models, the baryon asymmetry is largely dominated by canonical term. Within such type-II seesaw scenario, we find normal hierarchical mass model as the most favourable choice of nature.

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