Hunting electroweakinos at future hadron colliders and direct detection experiments

TL;DR

This paper assesses the potential of future high-energy colliders and direct detection experiments to discover electroweakinos, focusing on split supersymmetry models and their implications for dark matter detection.

Contribution

It provides detailed projections of electroweakino mass reach at 100 TeV colliders and explores their complementarity with direct detection experiments in various supersymmetry scenarios.

Findings

A 100 TeV collider can probe Winos up to ~7 TeV.

Collider and direct detection experiments can cover large parameter space.

Potential to detect electroweakinos even if they don't account for all dark matter.

Abstract

We analyse the mass reach for electroweakinos at future hadron colliders and their interplay with direct detection experiments. Motivated by the LHC data, we focus on split supersymmetry models with different electroweakino spectra. We find for example that a 100 TeV collider may explore Winos up to ~ 7 TeV in low scale gauge mediation models or thermal Wino dark matter around 3 TeV in models of anomaly mediation with long-lived Winos. We show moreover how collider searches and direct detection experiments have the potential to cover large part of the parameter space even in scenarios where the lightest neutralino does not contribute to the whole dark matter relic density.