6533b834fe1ef96bd129d780
RESEARCH PRODUCT
Neutrino-dark matter connections in gauge theories
Clara MurguiAlexis D. PlascenciaPavel Fileviez Pérezsubject
PhysicsParticle physics010308 nuclear & particles physicsHigh Energy Physics::LatticeSpontaneous symmetry breakingHigh Energy Physics::PhenomenologyDark matterFOS: Physical sciences01 natural sciencesLepton numberHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyStandard Model (mathematical formulation)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesHigh Energy Physics::ExperimentGauge theoryAnomaly (physics)Neutrino010306 general physicsGauge symmetrydescription
We discuss the connection between the origin of neutrino masses and the properties of dark matter candidates in the context of gauge extensions of the Standard Model. We investigate minimal gauge theories for neutrino masses where the neutrinos are predicted to be Dirac or Majorana fermions. We find that the upper bound on the effective number of relativistic species provides a strong constraint in the scenarios with Dirac neutrinos. In the context of theories where the lepton number is a local gauge symmetry spontaneously broken at the low scale, the existence of dark matter is predicted from the condition of anomaly cancellation. Applying the cosmological bound on the dark matter relic density, we find an upper bound on the symmetry breaking scale in the multi-TeV region. These results imply we could hope to test simple gauge theories for neutrino masses at current or future experiments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-30 | Physical Review D |