Journal Article

PUBDB-2021-05447

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dark Matter from Exponential Growth

Bringmann, T. (Corresponding author) ; Depta, P. F. (Corresponding author)DESY* ; Hufnagel, M. (Corresponding author)Extern* ; Ruderman, J. T. (Corresponding author)DESY* ; Schmidt-Hoberg, K. (Corresponding author)DESY*

2021
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.127.191802  doi:10.3204/PUBDB-2021-05447

Abstract: We propose a novel mechanism for the production of dark matter (DM) from a thermal bath based on the idea that DM particles $χ$ can transform heat bath particles $ψ: χψ→χχ$. For a small initial abundance of $χ$, this leads to an exponential growth of the DM number density in close analogy to other familiar exponential growth processes in nature. We demonstrate that this mechanism complements freeze-in and freeze-out production in a generic way, opening new parameter space to explain the observed DM abundance, and we discuss observational prospects for such scenarios.

Keyword(s): dark matter: production ; cosmic background radiation ; freeze-out ; thermal ; density

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project 390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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