Interplay of super-WIMP and freeze-in production of dark matter

Garny, Mathias;Heisig, Jan
(2018) Physical Review D, Particles, Fields, Gravitation and Cosmology — Vol. 98, n° np, p. 95031 (2018)

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  • Garny, MathiasPhysik Department T31, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany
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  • Heisig, Janorcid-logoUCLouvain
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Abstract
Nonthermalized dark matter is a cosmologically valid alternative to the paradigm of weakly interacting massive particles. For dark matter belonging to a \(Z_2\)-odd sector that contains in addition a thermalized mediator particle, dark matter production proceeds, in general, via both the freeze-in and super-WIMP mechanism. We highlight their interplay and emphasize the connection to long-lived particles at colliders. For the explicit example of a colored \(t\)-channel mediator model we map out the entire accessible parameter space, cornered by bounds from the LHC, big bang nucleosynthesis and Lyman-\(\alpha\) forest observations, respectively. We discuss prospects for the HL- and HE-LHC.
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Garny, M., & Heisig, J. (2018). Interplay of super-WIMP and freeze-in production of dark matter. Physical Review D, Particles, Fields, Gravitation and Cosmology, 98(np), 95031. https://doi.org/10.1103/PhysRevD.98.095031 (Original work published 2018)