Inverse tribimaximal type-III seesaw mechanism and lepton flavor violation

Journal Article · Tue Sep 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.053015· OSTI ID:21322576

Ibanez, D; Morisi, S; Valle, J W. F. ^[1]

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1. Institut de Fisica Corpuscular - C.S.I.C./Universitat de Valencia Edificio Institutos de Paterna, Apt 22085, E-46071 Valencia (Spain)

We present a type-III version of inverse seesaw or, equivalently an inverse version of type-III seesaw. Naturally small neutrino masses arise at low-scale from the exchange of neutral fermions transforming as hyperchargeless SU(2) triplets. In order to implement tribimaximal lepton mixing we supplement the minimal SU(3)xSU(2)xU(1) gauge symmetry with an A{sub 4}-based flavor symmetry. Our scenario induces lepton flavor violating (LFV) l{sub i}{yields}l{sub j}l{sub k}l{sub m} decays that can proceed at the tree level, while radiative l{sub i}{yields}l{sub j}{gamma} decays and mu-e conversion in nuclei are also expected to be sizeable. LFV decays are related by the underlying flavor symmetry and the new fermions are also expected to be accessible for study at the LHC.

• OSTI ID: 21322576
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
CONVERSION
FLAVOR MODEL
GAUGE INVARIANCE
LEPTONS
MASS
MIXING
NEUTRINOS
PARTICLE DECAY
RADIATIVE DECAY
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY
TRIPLETS
U-1 GROUPS