Neutrino masses in a 5D SU(3)W TeV unification model

Chia Hung V. Chang, We Fu Chang, J. N. Ng

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We study the generation of neutrino masses in the SU(3)W electroweak unified theory in M4 x S1/(Z2 x Z2′) spacetime. By appropriate orbifolding, the bulk symmetry SU(3)W is broken into SU(2)L x U(1)Y at one of the fixed points, where the quarks reside. The leptons form SU(3)W triplets, localized at the other symmetric fixed point. The fermion masses arise from the bulk Higgs sector containing a triplet and an anti-sextet. We construct neutrino Majorana masses via 1-loop quantum corrections by adding a parity odd bulk triplet scalar. No right-handed neutrino is needed. The neutrino mass matrix is of the inverted hierarchy type. We show that the model can easily accommodate the bi-large mixing angle solution favored by the recent neutrino experiments without much fine tuning of parameters. The constraints from μ → 3e transition and neutrinoless double β decays are discussed. Crown copyright

Original languageEnglish
Pages (from-to)92-102
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume558
Issue number1-2
DOIs
Publication statusPublished - 2003 Apr 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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