Precision predictions for supersymmetric dark matter

TL;DR

This paper introduces a high-precision computational method for predicting supersymmetric dark matter relic density, matching current experimental accuracy, and explores viable MSSM parameter regions considering various collider and low-energy constraints.

Contribution

It presents the DM@NLO program for next-to-leading order SUSY QCD calculations of dark matter annihilation processes, enabling more accurate relic density predictions.

Findings

Achieved 2% precision in relic density predictions

Identified viable MSSM regions consistent with collider constraints

Enhanced theoretical tools for dark matter phenomenology

Abstract

The dark matter relic density has been measured by Planck and its predecessors with an accuracy of about 2%. We present theoretical calculations with the numerical program DM@NLO in next-to-leading order SUSY QCD and beyond, which allow to reach this precision for gaugino and squark (co-)annihilations, and use them to scan the phenomenological MSSM for viable regions, applying also low-energy, electroweak and hadron collider constraints.