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Title: Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet

Abstract

We show that the neutrino models, as suggested by Low 1, which have an additional Abelian family symmetry and a real Higgs singlet to the default see-saw do not hinder the possibility of successful thermal leptogenesis. For these models (neglecting radiative effects), we have investigated the situation of strong washout in both the one-flavor approximation and when flavor effects are included. The result is that while such models predict that {theta}{sub 13}=0 and that one light neutrino to be massless, they do not modify or provide significant constraints on the typical leptogenesis scenario where the final asymmetry is dominated by the decays of the lightest right-handed neutrinos.

Authors:
;  [1]
  1. School of Physics, Research Centre for High Energy Physics, University of Melbourne, Victoria 3010 (Australia)
Publication Date:
OSTI Identifier:
21011053
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.75.043510; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; ASYMMETRY; FLAVOR MODEL; HIGGS BOSONS; HIGGS MODEL; NEUTRINOS; PARTICLE DECAY; PARTICLE PRODUCTION; SYMMETRY

Citation Formats

Law, Sandy S. C., and Volkas, Raymond R. Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.043510.
Law, Sandy S. C., & Volkas, Raymond R. Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet. United States. doi:10.1103/PHYSREVD.75.043510.
Law, Sandy S. C., and Volkas, Raymond R. Thu . "Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet". United States. doi:10.1103/PHYSREVD.75.043510.
@article{osti_21011053,
title = {Leptogenesis implications in models with Abelian family symmetry and one extra real Higgs singlet},
author = {Law, Sandy S. C. and Volkas, Raymond R.},
abstractNote = {We show that the neutrino models, as suggested by Low 1, which have an additional Abelian family symmetry and a real Higgs singlet to the default see-saw do not hinder the possibility of successful thermal leptogenesis. For these models (neglecting radiative effects), we have investigated the situation of strong washout in both the one-flavor approximation and when flavor effects are included. The result is that while such models predict that {theta}{sub 13}=0 and that one light neutrino to be massless, they do not modify or provide significant constraints on the typical leptogenesis scenario where the final asymmetry is dominated by the decays of the lightest right-handed neutrinos.},
doi = {10.1103/PHYSREVD.75.043510},
journal = {Physical Review. D, Particles Fields},
number = 4,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}