Minimal type II seesaw model

Journal Article · Sun Oct 01 04:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.076002· OSTI ID:20871339

Peihong, Gu; He, Zhang; Shun, Zhou ^[1]

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1. Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918 (4), Beijing 100049 (China)

We propose a minimal type II seesaw model by introducing only one right-handed neutrino besides the SU(2){sub L} triplet Higgs to the standard model. In the usual type II seesaw models with several right-handed neutrinos, the contributions of the right-handed neutrinos and the triplet Higgs to the CP asymmetry, which stems from the decay of the lightest right-handed neutrino, are proportional to their respective contributions to the light neutrino mass matrix. However, in our minimal type II seesaw model, this CP asymmetry is just given by the one-loop vertex correction involving the triplet Higgs, even though the contribution of the triplet Higgs does not dominate the light neutrino masses. For illustration, the Fritzsch-type lepton mass matrices are considered.

• OSTI ID: 20871339
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CORRECTIONS
HIGGS BOSONS
HIGGS MODEL
MATRICES
NEUTRINOS
PARTICLE DECAY
REST MASS
STANDARD MODEL
SU-2 GROUPS
TRIPLETS