A lower bound on light neutralino dark matter from LHC data

TL;DR

This paper examines the constraints on light neutralino dark matter within the MSSM framework, using recent LHC data, especially searches involving multiple taus and missing energy, to determine the lower mass bounds.

Contribution

It provides a new analysis of how recent LHC searches restrict the mass of light neutralino dark matter in the MSSM, focusing on tau and missing energy signatures.

Findings

Light neutralino masses are constrained by LHC data.

Tau and missing energy searches significantly limit the parameter space.

The lower bound on neutralino mass is established based on current collider results.

Abstract

Under the hypothesis that the MSSM neutralino accounts for the observed dark matter density, we investigate how light this particle is still allowed to be after the latest LHC data. In particular, we discuss the impact of searches for events with multiple taus and missing transverse momentum, which are a generic prediction of the light neutralino scenario.