Thermal dark matter co-annihilating with a strongly interacting scalar

Biondini, Simone; Laine, Mikko Sakari (2018). Thermal dark matter co-annihilating with a strongly interacting scalar. Journal of High Energy Physics, 2018(4) Springer 10.1007/JHEP04(2018)072

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Recently many investigations have considered Majorana dark matter co-annihilating with bound states formed by a strongly interacting scalar field. However only the gluon radiation contribution to bound state formation and dissociation, which at high temperatures is subleading to soft 2 → 2 scatterings, has been included. Making use of a non-relativistic effective theory framework and solving a plasma-modified Schrödinger equation, we address the effect of soft 2 → 2 scatterings as well as the thermal dissociation of bound states. We argue that the mass splitting between the Majorana and scalar field has in general both a lower and an upper bound, and that the dark matter mass scale can be pushed at least up to 5…6TeV.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Biondini, Simone and Laine, Mikko Sakari

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

14 May 2018 11:33

Last Modified:

23 Oct 2019 20:20

Publisher DOI:

10.1007/JHEP04(2018)072

ArXiv ID:

1801.05821v2

BORIS DOI:

10.7892/boris.116464

URI:

https://boris.unibe.ch/id/eprint/116464

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