A critical analysis of one-loop neutrino mass models with minimal dark matter

Amine Ahriche, Kristian L. McDonald, Salah Nasri, Ivica Picek

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


A recent paper investigated minimal RνMDM models with the type T1-iii and T3 one-loop topologies. However, the candidate most-minimal model does not possess an accidental symmetry - the scalar potential contains an explicit symmetry breaking term, rendering the dark matter unstable. We present two models that cure this problem. However, we further show that all of the proposed minimal one-loop RνMDM models suffer from a second problem - an additional source of explicit Z2 symmetry breaking in the Yukawa sector. We perform a more-general analysis to show that neutrino mass models using either the type T3 or type T1-iii one-loop topologies do not give viable minimal dark matter candidates. Consequently, one-loop models of neutrino mass with minimal dark matter do not appear possible. Thus, presently there remains a single known (three-loop) model of neutrino mass that gives stable dark matter without invoking any new symmetries.

Original languageEnglish
Pages (from-to)399-404
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - Jun 10 2016

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'A critical analysis of one-loop neutrino mass models with minimal dark matter'. Together they form a unique fingerprint.

Cite this