Gauge trimming of neutrino masses

Mu Chun Chen*, André De Gouvêa, Bogdan A. Dobrescu

*Corresponding author for this work

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

We show that under a new U(1) gauge symmetry, which is nonanomalous in the presence of one "right-handed neutrino" per generation and consistent with the standard model Yukawa couplings, the most general fermion charges are determined in terms of four rational parameters. This generalization of the B-L symmetry with generation-dependent lepton charges leads to neutrino masses induced by operators of high dimensionality. Neutrino masses are thus naturally small without invoking physics at energies above the TeV scale, whether neutrinos are Majorana or Dirac fermions. This "leptocratic" model predicts the existence of light quasisterile neutrinos with consequences for cosmology, and implies that collider experiments may reveal the origin of neutrino masses.

Original languageEnglish (US)
Article number055009
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number5
DOIs
StatePublished - Mar 15 2007

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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