Relic abundance of asymmetric Dark Matter

2011/04/30 by Hoernisa Iminniyaz, Manuel Drees, Xuelei Chen · 2 citations
Physics and Astronomy · #Annihilation #Astrophysics #Asymmetry #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Hot dark matter #Light dark matter #Mixed dark matter #Particle physics #Particle physics theoretical and experimental studies #Physics #Scalar field dark matter #WIMP #Warm dark matter #Weakly interacting massive particles #astro-ph.CO #hep-ph

paper · pdf · doi:10.1088/1475-7516/2011/07/003

20 pages, 11 figures, Accepted by JCAP

arxiv created 2011/06/26 · openalex publication_date 2011/07/04 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the relic abundance of asymmetric Dark Matter particles that were in thermal equilibrium in the early universe. The standard analytic calculation of the symmetric Dark Matter is generalized to the asymmetric case. We calculate the asymmetry required to explain the observed Dark Matter relic abundance as a function of the annihilation cross section. We show that introducing an asymmetry always reduces the indirect detection signal from WIMP annihilation, although it has a larger annihilation cross section than symmetric Dark Matter. This opens new possibilities for the construction of realistic models of MeV Dark Matter.

Citations

• A Unified Theory of Matter Genesis: Asymmetric Freeze-In
• Cosmic abundances of stable particles: Improved analysis
• Massive particle decay and cold dark matter abundance
• Weakly interacting dark matter and baryogenesis
• Constraints on the very early universe from thermal WIMP dark matter
• Nonthermal production of baryon and dark matter
• Asymmetric dark matter
• Smoothly evolving supercritical-string dark energy relaxes supersymmetric-dark-matter constraints
• Leptophilic Dark Matter from the Lepton Asymmetry
• Production of Massive Stable Particles in Inflaton Decay
• MeV Dark Matter: Has It Been Detected?
• Constraining dark matter through 21-cm observations
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Sky Maps, Systematic Errors, and Basic Results
• 10.1007/s11450-008-1016-9

Cited by

• Vector-like technineutron Dark Matter: is a QCD-type Technicolor ruled out by XENON100?
• Relic abundance of asymmetric Dark Matter in quintessence