Boosting Searches for Natural SUSY with RPV via Gluino Cascades

TL;DR

This paper proposes new search strategies for R-parity violating stops produced in gluino cascades, focusing on single-lepton channels and jet substructure to improve detection prospects at the LHC.

Contribution

It introduces novel search methods for RPV stops in gluino cascades, emphasizing single-lepton channels and advanced jet analysis techniques.

Findings

Stop mass peaks can be reconstructed across various spectra.

New strategies enhance detection of RPV stops in high jet multiplicity events.

Potential for double-discovery of top-partner in multijet environments.

Abstract

In the presence of even minuscule baryonic R-parity violation, the stop can be the lightest superpartner and evade LHC searches because it decays into two jets. In order to cover this interesting possibility, we here consider new searches for RPV stops produced in gluino cascades. While typical searches for gluinos decaying to stops rely on same-sign dileptons, the RPV cascades usually have fewer hard leptons, less excess missing energy, and more jets than R-parity conserving cascades. If the gluino is a Dirac fermion, same-sign dilepton signals are also often highly depleted. We therefore explore search strategies that use single-lepton channels, and combat backgrounds using HT, jet counting, and more detailed multijet kinematics or jet substructure. We demonstrate that the stop mass peaks can be fully reconstructed over a broad range of spectra, even given the very high jet multiplicities. This would not only serve as a "double-discovery" opportunity, but would also be a spectacular confirmation that the elusive top-partner has been hiding in multijets.