6533b853fe1ef96bd12ac240
RESEARCH PRODUCT
Probing photophobic axion and relaxion dark matter
Nayara FonsecaEnrico Morgantesubject
PhysicsParticle physics010308 nuclear & particles physicsmedia_common.quotation_subjectDark matterContext (language use)Astrophysics::Cosmology and Extragalactic AstrophysicsElectron01 natural sciencesUniverseCosmology0103 physical sciencesProduction (computer science)Electroweak scale010306 general physicsAxionmedia_commondescription
We investigate the interplay between early universe cosmology and dark matter direct detection, considering axion models with naturally suppressed couplings to photons. In the context of the cosmological relaxation of the electroweak scale, we focus on a scenario of relaxion dark matter, in which the relaxion field constitutes all the observed dark matter relic density and its allowed mass range is fixed to a few keV by construction. In particular, we show that a relaxion particle with mass mϕ=3.0 keV which couples to electrons with gϕ,e=6.8×10−14 is consistent with the XENON1T excess, while accounting for the observed dark matter and satisfying astro/cosmo probes. This scenario uses the electroweak scale as the link connecting the relaxion production at early times with the dark matter absorption rate in direct detection.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-12 | Physical Review |