Journal of High Energy Physics

, 2019:16 | Cite as

Coloured coannihilations: dark matter phenomenology meets non-relativistic EFTs

  • S. BiondiniEmail author
  • S. Vogl
Open Access
Regular Article - Theoretical Physics


We investigate the phenomenology of a simplified model with a Majorana fermion as dark matter candidate which interacts with Standard Model quarks via a colourcharged coannihilation partner. Recently it has been realized that non-perturbative dynamics, including the Sommerfeld effect, bound state formation/dissociation and thermal corrections, play an important role in coannihilations with coloured mediators. This calls for a careful analysis of thermal freeze-out and a new look at the experimental signatures expected for a thermal relic. We employ a state of the art calculation of the relic density which makes use of a non-relativistic effective theory framework and calculate the effective annihilation rates by solving a plasma-modified Schrödinger equation. We determine the cosmologically preferred parameter space and confront it with current experimental limits and future prospects for dark matter detection.


Beyond Standard Model Cosmology of Theories beyond the SM Effective Field Theories Thermal Field Theory 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Van Swinderen InstituteUniversity of GroningenGroningenNetherlands
  2. 2.Max-Planck-Institut für Kernphysik (MPIK)HeidelbergGermany

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