Finite Temperature Corrections to Relic Density Calculations

Abstract

In this paper we evaluate finite temperature corrections to the dark matter relic density within the context of minimal supersymmetry with a neutralino LSP. We identify several regions of parameter space where the WIMP annihilation cross section is especially sensitive to small corrections to the undelrlying parameters. In these regions, finite temperature effects have the potential to be important. However, we shall show by explicit calculation that these effects are small. In the regions we investigated, the maximal corrections are on the order of 10^{-4} and are therefore negligible compared with theoretical and experimental uncertainties.

arXiv comment17 pages

References in corpus (11)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Physics Interplay of the LHC and the ILC
• Supersymmetric Dark Matter in the Light of LEP and the Tevatron Collider
• Accurate relic densities with neutralino, chargino and sfermion coannihilations in mSUGRA
• WIMP Dark Matter and the QCD Equation of State
• Linear Collider Capabilities for Supersymmetry in Dark Matter Allowed Regions of the mSUGRA Model
• The Stau Neutralino Co-annihilation Region at an International Linear Collider
• Temperature Power Law of Equilibrium Heavy Particle Density
• Propagation of Majorana fermions in hot plasma
• Post freeze-out annihilations in the early universe

Cited by in corpus (5)

• Full one-loop corrections to the relic density in the MSSM: A few examples
• On thermal corrections to near-threshold annihilation
• Re-derived overclosure bound for the inert doublet model
• Relic density of dark matter in the inert doublet model beyond leading order for the low mass region: 1. Renormalisation and constraints
• Charged-Particle Decay at Finite Temperature