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QCD axion dark matter from a late time phase transition
The journal of high energy physics, 2020-06, Vol.2020 (6), p.1-18, Article 34
[Peer Reviewed Journal]
The Author(s) 2020 ;The Author(s) 2020. ;ISSN: 1029-8479 ;EISSN: 1029-8479 ;DOI: 10.1007/JHEP06(2020)034
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Title:
QCD axion dark matter from a late time phase transition
Author:
Harigaya, Keisuke
;
Leedom, Jacob M.
Subjects:
Beyond Standard Model
;
Broken symmetry
;
Classical and Quantum Gravitation
;
Cosmology of Theories beyond the SM
;
Dark matter
;
Decay rate
;
Elementary Particles
;
Kaons
;
Phase transitions
;
Physics
;
Physics and Astronomy
;
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
;
Quantum Field Theories
;
Quantum Field Theory
;
Quantum Physics
;
Regular Article - Theoretical Physics
;
Relativity Theory
;
String Theory
;
Symmetry
;
Temperature
Is Part Of:
The journal of high energy physics, 2020-06, Vol.2020 (6), p.1-18, Article 34
Description:
A bstract We investigate the possibility that the Peccei-Quinn phase transition occurs at a temperature far below the symmetry breaking scale. Low phase transition temperatures are typical in supersymmetric theories, where symmetry breaking fields have small masses. We find that QCD axions are abundantly produced just after the phase transition. The observed dark matter abundance is reproduced even if the decay constant is much lower than 10 11 GeV. The produced axions tend to be warm. For some range of the decay constant, the effect of the predicted warmness on structure formation can be confirmed by future observations of 21 cm lines. A portion of parameter space requires a mixing between the Peccei-Quinn symmetry breaking field and the Standard Model Higgs, and predicts an observable rate of rare Kaon decays.
Publisher:
Berlin/Heidelberg: Springer Berlin Heidelberg
Language:
English
Identifier:
ISSN: 1029-8479
EISSN: 1029-8479
DOI: 10.1007/JHEP06(2020)034
Source:
Springer Nature OA/Free Journals
ProQuest Central
DOAJ Directory of Open Access Journals
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