A model of radiative neutrino mass: with or without dark matter

Amine Ahriche, Kristian L. McDonald, Salah Nasri

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Abstract: We present a three-loop model of neutrino mass whose most-general Lagrangian possesses a softly-broken accidental Z2 symmetry. In the limit that a single parameter vanishes, λ →0, the Z2 symmetry becomes exact and the model contains a stable dark-matter candidate. However, even for finite λ ≪1, long-lived dark matter is possible, giving a unified solution to the neutrino mass and dark matter problems that does not invoke a new symmetry. Taken purely as a neutrino mass model, the new physics can be at the TeV scale. When dark matter is incorporated, however, only a singlet scalar can remain this light, though the dark matter can be tested in direct-detection experiments.

Original languageEnglish
Article number167
JournalJournal of High Energy Physics
Issue number10
Publication statusPublished - Oct 2014


  • Beyond Standard Model
  • Cosmology of Theories beyond the SM
  • Neutrino Physics
  • Phenomenological Models

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'A model of radiative neutrino mass: with or without dark matter'. Together they form a unique fingerprint.

Cite this