Discovery reach for wino and higgsino dark matter with a disappearing track signature at a 100 TeV $pp$ collider

Abstract

Within the theory of supersymmetry, the lightest neutralino is a dark matter candidate and is often assumed to be the lightest supersymmetric particle (LSP) as well. If the neutral wino or higgsino is dark matter, the upper limit of the LSP mass is determined by the observed relic density of dark matter. If the LSP is a nearly-pure neutral state of the wino or higgsino, the lightest chargino state is expected to have a significant lifetime due to a tiny mass difference between the LSP and the chargino. This article presents discovery potential of the 100 TeV future circular hadron collider (FCC) for the wino and higgsino dark matter using a disappearing-track signature. The search strategy to extend the discovery reach to the thermal limits of wino/higgsino dark matter is discussed with detailed studies on the background rate and the reference design of the FCC-hadron detector under possible running scenarios of the FCC-hadron machine. A proposal of modifying the detector layout and several ideas to improve the sensitivity further are also discussed.

10 pages, 7 figures, 4 tables

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• Muon $g-2$ in Gauge Mediation without SUSY CP Problem
• Dijet and electroweak limits on a $Z^{\prime }$ boson coupled to quarks
• Precision unification and Higgsino dark matter in GUT scale supersymmetry
• Long Dead Winos
• Determining Wino Lifetime in Supersymmetric Model at Future 100 TeV pp Colliders
• Non-perturbative Effects on Electroweakly Interacting Massive Particles at Hadron Collider
• Mono-Higgs and Mono-$Z$ Production in the Minimal Vector Dark Matter Model
• Minimal Nambu-Goldstone Higgs Model in Supersymmetric SU(5) Revisited
• Long-Lived Particles at Future Colliders
• Vector Dark Matter from the 5-Dimensional Representation of $SU(2{)}_L$
• Search for long-lived charginos and $\tau$-sleptons using final states with a disappearing track in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Studying squark mass spectrum through gluino decay at 100 TeV future hadron colliders
• Search for gamma-ray spectral lines from dark matter annihilation with the H.E.S.S. Inner Galaxy Survey