6533b7d5fe1ef96bd1264874
RESEARCH PRODUCT
Sterile neutrino portal to Dark Matter I: the U(1) B−L case
Miguel EscuderoVeronica SanzNuria Riussubject
Sterile neutrinoParticle physicsNuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Physics beyond the Standard ModelHigh Energy Physics::LatticeDark matterFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciences7. Clean energyStandard ModelHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsQCMajoronPhysicsGauge boson010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyHigh Energy Physics - PhenomenologyHiggs bosonHigh Energy Physics::ExperimentNeutrinoAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
In this paper we explore the possibility that the sterile neutrino and Dark Matter sectors in the Universe have a common origin. We study the consequences of this assumption in the simple case of coupling the dark sector to the Standard Model via a global $U(1)_{B-L}$, broken down spontaneously by a dark scalar. This dark scalar provides masses to the dark fermions and communicates with the Higgs via a Higgs portal coupling. We find an interesting interplay between Dark Matter annihilation to dark scalars - the CP-even that mixes with the Higgs and the CP-odd which becomes a Goldstone boson, the Majoron - and heavy neutrinos, as well as collider probes via the coupling to the Higgs. Moreover, Dark Matter annihilation into sterile neutrinos and its subsequent decay to gauge bosons and quarks, charged leptons or neutrinos lead to indirect detection signatures which are close to current bounds on the gamma ray flux from the galactic center and dwarf galaxies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-02-08 | Journal of High Energy Physics |