Biondini, Simone (2018). Bound-state effects for dark matter with Higgs-like mediators. Journal of High Energy Physics, 2018(6) Springer 10.1007/JHEP06(2018)104
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Biondini2018_Article_Bound-stateEffectsForDarkMatte.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (604kB) | Preview |
In this paper we study the impact of a scalar exchange on the dark matter relic abundance by solving a plasma-modified Schr ̈odinger equation. A simplified model is considered where a Majorana dark matter fermion is embedded in a U(1)′ extension of the Standard Model and couples with a dark Higgs via a Yukawa interaction. We find that the dark-Higgs exchange can increase the overclosure bounds significantly. For the largest (smallest) value of the Yukawa coupling examined in this work, the dark matter mass is lifted from 5 TeV (0.55 TeV) to 27 TeV (0.70 TeV).
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Biondini, Simone |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
30 Aug 2018 15:40 |
Last Modified: |
05 Dec 2022 15:17 |
Publisher DOI: |
10.1007/JHEP06(2018)104 |
ArXiv ID: |
1805.00353 |
BORIS DOI: |
10.7892/boris.119668 |
URI: |
https://boris.unibe.ch/id/eprint/119668 |
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