publication . Other literature type . Article . Preprint . 2018

Self-interacting dark matter with a stable vector mediator

Duerr, Michael; Schmidt-Hoberg, Kai; Wild, Sebastian;
Open Access en
  • Published: 27 Apr 2018 Journal: issn: 1475-7516, Copyright policy
  • Publisher: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Abstract
Light vector mediators can naturally induce velocity-dependent dark matter self-interactions while at the same time allowing for the correct dark matter relic abundance via thermal freeze-out. If these mediators subsequently decay into Standard Model states such as electrons or photons however, this is robustly excluded by constraints from the Cosmic Microwave Background. We study to what extent this conclusion can be circumvented if the vector mediator is stable and hence contributes to the dark matter density while annihilating into lighter degrees of freedom. We find viable parts of parameter space which lead to the desired self-interaction cross section of d...
Subjects
arxiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: coupling [dark matter], dark matter: coupling, new physics, cosmic background radiation, dark matter: interaction, dark matter: freeze-out, relic density [dark matter], dark matter: mediation, big bang [nucleosynthesis], Astrophysics - Cosmology and Nongalactic Astrophysics, nucleosynthesis: big bang, thermal [freeze-out], High Energy Physics - Phenomenology, mediation [dark matter], interaction [dark matter], freeze-out: thermal, dark matter: relic density, freeze-out [dark matter], 530, ddc:530
Funded by
EC| NewAve
Project
NewAve
New avenues towards solving the dark matter puzzle
  • Funder: European Commission (EC)
  • Project Code: 638528
  • Funding stream: H2020 | ERC | ERC-STG
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publication . Other literature type . Article . Preprint . 2018

Self-interacting dark matter with a stable vector mediator

Duerr, Michael; Schmidt-Hoberg, Kai; Wild, Sebastian;