Neutralino Annihilation into Massive Quarks with SUSY-QCD Corrections

TL;DR

This paper calculates detailed SUSY-QCD corrections to neutralino annihilation into massive quarks, showing these effects significantly influence the interpretation of cosmological data in supersymmetric models.

Contribution

It provides the full O(alpha_s) SUSY-QCD correction calculations for neutralino annihilation into massive quarks within the MSSM, including resummation of logarithmic terms.

Findings

Corrections have a sizable impact on SUSY parameter extraction.

Inclusion of corrections is essential for accurate cosmological analyses.

Results improve the precision of neutralino annihilation predictions.

Abstract

We compute the full O(alpha_s) supersymmetric (SUSY) QCD corrections for neutralino annihilation into massive quarks through gauge or Higgs bosons and squarks in the Minimal Supersymmetric Standard Model (MSSM), including the known resummation of logarithmically enhanced terms. The numerical impact of the corrections on the extraction of SUSY mass parameters from cosmological data is analyzed for gravity-mediated SUSY breaking scenarios and shown to be sizable, so that these corrections must be included in common analysis tools.