Neutrino mixing and leptogenesis in the type II seesaw mechanism

Journal Article · Wed Sep 01 04:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.053009· OSTI ID:20705116

Wanlei, Guo ^[1]

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1. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 (China)

In the framework of the type II seesaw mechanism we propose two simple but instructive ansaetze for neutrino mixing and leptogenesis. In each ansatz, the effective Majorana neutrino mass matrix is composed of two parts--the part with Z{sub 2} symmetry arises from the ordinary type I seesaw mechanism and the part with S{sub 3} symmetry arises from an additional Higgs triplet vacuum expectation value. The two ansaetze can simultaneously account for the current neutrino oscillation data and the cosmological baryon number asymmetry via leptogenesis.

• OSTI ID: 20705116
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYON NUMBER
CONSERVATION LAWS
EXPECTATION VALUE
HIGGS BOSONS
HIGGS MODEL
NEUTRINO OSCILLATION
NEUTRINOS
PARTICLE PRODUCTION
REST MASS
SYMMETRY
TRIPLETS
UNIFIED GAUGE MODELS