Constraining heavy dark matter with cosmic-ray antiprotons

2017/11/30 by A. Cuoco, Alessandro Cuoco, Jan Heisig +2 · 86 citations
Physics and Astronomy · #Annihilation #Antiproton #Astronomy #Astrophysics #Baryonic dark matter #Context (archaeology) #Cosmic ray #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Dark matter halo #Galaxy #Halo #Hot dark matter #Light dark matter #Mixed dark matter #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Scalar field dark matter #Warm dark matter #astro-ph.HE #hep-ph

paper · pdf · doi:10.1088/1475-7516/2018/04/004

published in Journal of Cosmology and Astroparticle Physics 2018(04), 004 (Institute of Physics) · 14 pages + references, 5 figures; v2: HESS limits added in Fig. 2, matches published version

openalex publication_date 2018/04/03 · arxiv created 2018/04/20 · arxiv updated 2018/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Cosmic-ray observations provide a powerful probe of dark matter annihilation in the Galaxy. In this paper we derive constraints on heavy dark matter from the recent precise AMS-02 antiproton data. We consider all possible annihilation channels into pairs of standard model particles. Furthermore, we interpret our results in the context of minimal dark matter, including higgsino, wino and quintuplet dark matter. We compare the cosmic-ray antiproton limits to limits from γ-ray observations of dwarf spheroidal galaxies and to limits from γ-ray and γ-line observations towards the Galactic center. While the latter limits are highly dependent on the dark matter density distribution and only exclude a thermal wino for cuspy profiles, the cosmic-ray limits are more robust, strongly disfavoring the thermal wino dark matter scenario even for a conservative estimate of systematic uncertainties.

Citations

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