Journal Article

PUBDB-2024-06427

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hunting WIMPs with LISA: correlating dark matter and gravitational wave signals

Bringmann, T. ; Gonzalo, T. E. ; Kahlhoefer, F. ; Matuszak, J. (Corresponding author) ; Tasillo, C.DESY*

2024
IOP London

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Please use a persistent id in citations: doi:10.1088/1475-7516/2024/05/065  doi:10.3204/PUBDB-2024-06427

Report No.: DESY-23-184; P3H-086; TTP-055; arXiv:2311.06346

Abstract: The thermal freeze-out mechanism in its classical form is tightly connected to physicsbeyond the Standard Model around the electroweak scale, which has been the target of enormousexperimental efforts. In this work we study a dark matter model in which freeze-out is triggeredby a strong first-order phase transition in a dark sector, and show that this phase transitionmust also happen close to the electroweak scale, i.e. in the temperature range relevant forgravitational wave searches with the LISA mission. Specifically, we consider the spontaneousbreaking of a U(1)′ gauge symmetry through the vacuum expectation value of a scalar field,which generates the mass of a fermionic dark matter candidate that subsequently annihilates intodark Higgs and gauge bosons. In this set-up the peak frequency of the gravitational wavebackground is tightly correlated with the dark matter relic abundance, and imposing the observedvalue for the latter implies that the former must lie in the milli-Hertz range. A peculiar featureof our set-up is that the dark sector is not necessarily in thermal equilibrium with the StandardModel during the phase transition, and hence the temperatures of the two sectors evolveindependently. Nevertheless, the requirement that the universe does not enter an extended periodof matter domination after the phase transition, which would strongly dilute any gravitationalwave signal, places a lower bound on the portal coupling that governs the entropy transfer betweenthe two sectors. As a result, the predictions for the peak frequency of gravitational waves in theLISA band are robust, while the amplitude can change depending on the initial dark sectortemperature.

Keyword(s): gravitational radiation: frequency ; scale: electroweak interaction ; symmetry: gauge ; freeze-out: thermal ; fermion: dark matter ; dark matter: relic density ; gravitational radiation: background ; fermion: mass ; field theory: scalar ; critical phenomena ; temperature ; LISA ; hidden sector ; new physics ; WIMP ; U(1) ; entropy ; gauge boson ; spontaneous symmetry breaking ; correlation ; gravitational radiation: primordial ; cosmological model ; higher-order: 1 ; dark matter: annihilation ; Higgs particle ; cosmological phase transitions ; dark matter theory ; particle physics - cosmology connection ; primordial gravitational waves (theory)

Note: 29 pages, 12 figures + appendices

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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. ASYMMETRY - Essential Asymmetries of Nature (101086085) (101086085)
3. DFG project 396021762 - TRR 257: Phänomenologische Elementarteilchenphysik nach der Higgs-Entdeckung (396021762) (396021762)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Bringmann, T.Extern* ; Gonzalo, T. E. ; Kahlhoefer, F. ; Matuszak, J. (Corresponding author) ; Tasillo, C.DESY*
Hunting WIMPs with LISA: Correlating dark matter and gravitational wave signals
[10.3204/PUBDB-2023-06699]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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