Two real scalar WIMP model in the assisted freeze-out scenario

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

We study a simple dark matter model given by two interacting real singlet scalars, with only one of them coupled to the Higgs. The model therefore presents a minimal assisted-freeze-out framework: both scalars contribute to the dark matter relic density, but only one of them takes part in the elastic scattering with nuclei. This reduces the expected interaction rate in direct detection experiments in such a way that the model in some regions of the parameter space may evade XENON1T constraints. We explore the model under theoretical (perturbativity, stability potential and unitarity) and experimental constraints (Higgs to invisible, relic density, direct detection), with the use of the narrow-width-approximation near the Higgs resonance to calculate the averaged annihilation cross section. We show that the model is viable in the Higgs resonance region and for scalar singlets masses of hundreds of GeV, although the model becomes highly constrained at high energies.

Details

Original languageEnglish
Article number027
Pages (from-to)027
Number of pages1
JournalJournal of Cosmology and Astroparticle Physics
Volume2021
Issue number10
Publication statusPublished - Oct 2021
Peer-reviewedYes

External IDs

Scopus 85117710415

Keywords