Supersymmetric Monojets at the Large Hadron Collider

TL;DR

This paper explores the potential of detecting supersymmetric monojets at the LHC, focusing on measuring the neutralino_1-squark-quark coupling to inform dark matter properties and test supersymmetric relations.

Contribution

It analyzes the feasibility of using monojet events at the LHC to measure key supersymmetric couplings and their implications for dark matter and supersymmetry validation.

Findings

Monojet signals can provide information on neutralino_1-squark-quark coupling.

The coupling measurement can constrain dark matter properties.

The study assesses the precision of coupling determination at the LHC.

Abstract

Supersymmetric monojets may be produced at the Large Hadron Collider by the process qg -> squark neutralino_1 -> q neutralino_1 neutralino_1, leading to a jet recoiling against missing transverse momentum. We discuss the feasibility and utility of the supersymmetric monojet signal. In particular, we examine the possible precision with which one can ascertain the neutralino_1-squark-quark coupling via the rate for monojet events. Such a coupling contains information on the composition of the neutralino_1 and helps bound dark matter direct detection cross-sections and the dark matter relic density of the neutralino_1. It also provides a check of the supersymmetric relation between gauge couplings and gaugino-quark-squark couplings.