Neutralino Dark Matter

TL;DR

This paper analyzes relic neutralinos within the Minimal Supersymmetric Standard Model, focusing on their relic abundance, detection prospects, and comparison with experimental bounds and other theoretical models.

Contribution

It provides updated predictions for neutralino relic abundance and detection rates based on current accelerator data, including comparisons with more complex unification models.

Findings

Predicted detection rates are close to current experimental bounds.

Relic abundance calculations are consistent with cosmological constraints.

Comparison shows differences with GUT-scale unification models.

Abstract

We examine the main properties of relic neutralinos in the context of the Minimal Supersymmetric extension of the Standard Model. We present a whole set of results obtained for the relic abundance and for detection rates with a model constrained according to the latest accelerator data. Predicted detection rates for relic neutralinos are compared to the present experimental bounds. A comparison with results obtained with more sophisticated theoretical schemes with unification assumptions at M_{GUT} is presented too. We also briefly discuss some properties of a Higgsino-like neutralino which has recently been suggested in connection with a supersymmetric interpretation of a single event at the Fermilab Tevatron.