Journal Article

PUBDB-2023-01100

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Axion dark matter from frictional misalignment

Papageorgiou, A. ; Quilez Lasanta, P. (Corresponding author)DESY* ; Schmitz, K.

2023
SISSA [Trieste]

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Please use a persistent id in citations: doi:10.1007/JHEP01(2023)169  doi:10.3204/PUBDB-2023-01100

Report No.: CERN-TH-2022-091; CTPU-PTC-22-11; DESY-22-094; MS-TP-22-17; arXiv:2206.01129

Abstract: We study the impact of sphaleron-induced thermal friction on the axion dark-matter abundance due to the interaction of an axion-like particle (ALP) with a dark non-abelian gauge sector in a secluded thermal bath. Thermal friction can either enhance the axion relic density by delaying the onset of oscillations or suppress it by damping them. We derive an analytical formula for the $frictional$ $adiabatic$ $invariant$, which remains constant along the axion evolution and which allows us to compute the axion relic density in a general set-up. Even in the most minimal scenario, in which a single gauge group is responsible for both the generation of the ALP mass and the friction force, we find that the resulting dark-matter abundance from the misalignment mechanism deviates from the standard scenario for axion masses $m_a\gtrsim 100 \; {\rm eV}$. We also generalize our analysis to the case where the gauge field that induces friction and the gauge sector responsible for the ALP mass are distinct and their couplings to the axion have a large hierarchy as can be justified by means of alignment or clockwork scenarios. We find that it is easy to open up the ALP parameter space where the resulting axion abundance matches the observed dark-matter relic density both in the traditionally over- and underabundant regimes. This conclusion also holds for the QCD axion.

Keyword(s): axion: dark matter ; axion: relic density ; dark matter: relic density ; quantum chromodynamics: axion ; gauge: nonabelian ; axion: mass ; invariance: adiabatic ; thermal ; alignment ; oscillation ; hierarchy ; gauge field theory ; axion-like particles ; numerical calculations ; Axions and ALPs ; Cosmology of Theories BSM ; Early Universe Particle Physics ; Particle Nature of Dark Matter

Note: 18 pages, 6 figures and 2 tables. v3: Published version in JHEP. Typos and references corrected. Ten-minute video abstract on Youtube: https://youtu.be/PBtN0XAubfM

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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)
3. HIDDeN - Hunting Invisibles: Dark sectors, Dark matter and Neutrinos (860881) (860881)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOAP3 sponsored Journal ; 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 Papageorgiou, A. ; Quilez Lasanta, P. (Corresponding author)DESY* ; Schmitz, K.
Axion dark matter from frictional misalignment
[10.3204/PUBDB-2022-02799]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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