Asymmetric dark matter: residual annihilations and self-interactions

Baldes, Iason; Cirelli, Marco; Panci, Paolo; Petraki, Kalliopi; Sala, Filippo; Taoso, Marco

doi:10.21468/SciPostPhys.4.6.041

SciPost Physics

Asymmetric dark matter: residual annihilations and self-interactions

Iason Baldes, Marco Cirelli, Paolo Panci, Kalliopi Petraki, Filippo Sala, Marco Taoso

SciPost Phys. 4, 041 (2018) · published 26 June 2018

doi: 10.21468/SciPostPhys.4.6.041
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Submissions/Reports

Abstract

Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, $\gamma$-ray searches and the CMB strongly constrain such scenarios. To ease the tension, we consider asymmetric DM. We show that, contrary to the common lore, detectable annihilations occur even for large asymmetries, and derive bounds from the CMB, $\gamma$-ray, neutrino and antiproton searches. We then identify the viable space for self-interacting DM. Direct detection does not exclude this scenario, but provides a way to test it.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.4.6.041
TI  - Asymmetric dark matter: residual annihilations and self-interactions
PY  - 2018/06/26
UR  - https://scipost.org/SciPostPhys.4.6.041
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 4
IS  - 6
SP  - 041
A1  - Baldes, Iason
AU  - Cirelli, Marco
AU  - Panci, Paolo
AU  - Petraki, Kalliopi
AU  - Sala, Filippo
AU  - Taoso, Marco
AB  - Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, $\gamma$-ray searches and the CMB strongly constrain such scenarios. To ease the tension, we consider asymmetric DM. We show that, contrary to the common lore, detectable annihilations occur even for large asymmetries, and derive bounds from the CMB, $\gamma$-ray, neutrino and antiproton searches. We then identify the viable space for self-interacting DM. Direct detection does not exclude this scenario, but provides a way to test it.
ER  -

@Article{10.21468/SciPostPhys.4.6.041,
	title={{Asymmetric dark matter: residual annihilations and self-interactions}},
	author={Iason Baldes and Marco Cirelli and Paolo Panci and Kalliopi Petraki and Filippo Sala and Marco Taoso},
	journal={SciPost Phys.},
	volume={4},
	pages={041},
	year={2018},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.4.6.041},
	url={https://scipost.org/10.21468/SciPostPhys.4.6.041},
}

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Ontology / Topics

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Cosmic microwave background (CMB) Dark matter Galactic structure

Authors / Affiliations: mappings to Contributors and Organizations

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¹ Iason Baldes,
² Marco Cirelli,
³ Paolo Panci,
² ⁴ Kalliopi Petraki,
¹ Filippo Sala,
⁵ ⁶ ⁷ Marco Taoso

Funders for the research work leading to this publication

Agence Nationale de la Recherche [ANR]
European Research Council [ERC]
Nederlandse Organisatie voor Wetenschappelijk Onderzoek / Netherlands Organisation for Scientific Research [NWO]
Secretaría de Estado de Investigacion, Desarrollo e Innovacion (through Organization: Ministerio de Economía, Industria y Competitividad / Ministry of Economy, Industry and Competitiveness [MINECO])