Kinetic decoupling of neutralino dark matter

2001/03/31 by Xuelei Chen, Marc Kamionkowski, Xinmin Zhang · 6 citations
Physics and Astronomy · #Astrophysics #Classical mechanics #Cold dark matter #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Decoupling (probability) #Elastic scattering #Kinetic energy #Neutralino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Scattering #Universe #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevd.64.021302

published as Phys.Rev.D64:021302,2001 · Replaced with revised version, new references added

arxiv created 2001/06/08 · openalex publication_date 2001/06/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

After neutralinos cease annihilating in the early Universe, they may still scatter elastically from other particles in the primordial plasma. At some point in time, however, they will eventually stop scattering. We calculate the cross sections for neutralino elastic scattering from standard-model particles to determine the time at which this kinetic decoupling occurs. We show that kinetic decoupling occurs above a temperature T\ensuremath∼MeV. Thereafter, neutralinos act as collisionless cold dark matter.

Citations

• Model-Independent Comparison of Direct versus Indirect Detection of Supersymmetric Dark Matter

Cited by

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• Multi-frequency analysis of neutralino dark matter annihilations in the Coma cluster
• Ultra-cold weakly interacting massive particles: relics of non-standard pre-big-bang-nucleosynthesis cosmologies
• Small scale structure formation in chameleon cosmology
• Relic density of asymmetric Dark Matter with Sommerfeld enhancement *
• Nonthermal histories and implications for structure formation