2011/04/30 by Matthew R. Buckley
Mathematics · Physics and Astronomy · #Annihilation #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Light dark matter #Mathematics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quark #Scalar field dark matter #Standard Model (mathematical formulation) #Theoretical physics #Universe #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.84.043510
published as Phys.Rev.D84:043510,2011 · 6 pages, 1 figure. V2 replacement: Citations added. Shading error in Fig. 1 (L_FV panel) corrected. Addition of direct detection bounds on m_chi <5 GeV added, minor alterations in text to reflect these changes
openalex publication_date 2011/08/09 · arxiv created 2011/09/10 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
In order to annihilate in the early Universe to levels well below the measured dark matter density, asymmetric dark matter must possess large couplings to the standard model. In this paper, we consider effective operators which allow asymmetric dark matter to annihilate into quarks. In addition to a bound from requiring sufficient annihilation, the energy scale of such operators can be constrained by limits from direct detection and monojet searches at colliders. We show that the allowed parameter space for these operators is highly constrained, leading to nontrivial requirements that any model of asymmetric dark matter must satisfy.