Novel Higgsino Dark Matter Signatures at the LHC
Ernesto Arganda, Antonio Delgado, Roberto A. Morales, Mariano Quir\'os

TL;DR
This paper proposes a new supersymmetric signal involving gluino decay chains leading to Higgsino dark matter, and develops a search strategy for detecting this at the high-luminosity LHC with promising discovery prospects.
Contribution
It introduces a novel gluino decay channel involving Higgsino dark matter and designs a search strategy for high-luminosity LHC runs.
Findings
Potential for discovery at 3000 fb$^{-1}$ luminosity.
Identification of main background processes.
Development of a targeted search strategy.
Abstract
In the LHC searches for gluinos it is usually assumed that they decay predominantly into the lightest neutralino plus jets. In this work we perform a proof-of-concept collider analysis of a novel supersymmetric signal in which gluinos decay mostly into jets and the bino-like neutralino (), which in turn decays into the lightest Higgsino-like neutralino (), considered the dark matter candidate, together with the SM-like Higgs boson (). This new physics signal then consists of an LHC final state made up by four light jets, four -jets, and a large amount of missing transverse energy. We identify , +jets (= , ), and ( = , , , ) productions as the most problematic backgrounds, and develop a search strategy for the high luminosity phase of the LHC, reaching signal significances at the evidence…
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Dark Matter and Cosmic Phenomena · Cosmology and Gravitation Theories
