A statistical combination of ATLAS Run 2 searches for charginos and neutralinos at the LHC

Abstract

Statistical combinations of searches for charginos and neutralinos using various decay channels are performed using $139$fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$TeV with the ATLAS detector at the Large Hadron Collider. Searches targeting pure-wino chargino pair production, pure-wino chargino-neutralino production, or higgsino production decaying via Standard Model $W$, $Z$, or $h$ bosons are combined to extend the mass reach to the produced SUSY particles by 30-100 GeV. The depth of the sensitivity of the original searches is also improved by the combinations, lowering the 95% CL cross-section upper limits by 15%-40%.

28 pages in total, author list starting page 11, 2 figures, 1 table, published in PRL. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2020-05

References in corpus (17)

• General Gauge Mediation
• Simplified Models for a First Characterization of New Physics at the LHC
• Muon reconstruction and identification efficiency in ATLAS using the full Run 2 $pp$ collision data set at $\sqrt{s}=13$ TeV
• Squark and gluino production cross sections in pp collisions at $\sqrt{s}$ = 13, 14, 33 and 100 TeV
• HistFitter software framework for statistical data analysis
• Searching for Directly Decaying Gluinos at the Tevatron
• Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb${}^{-1}$ of $\sqrt{s}$ =13 TeV $pp$ collision data with the ATLAS detector
• Search for chargino--neutralino pair production in final states with three leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• (Extra)Ordinary Gauge Mediation
• Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• RECAST: Extending the Impact of Existing Analyses
• Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the $W$-boson mass in $\sqrt{s}=13$TeV $pp$ collisions with the ATLAS detector
• Search for supersymmetry in events with four or more charged leptons in $139\,\mbox{fb\(^{-1}\)}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Combined search for electroweak production of winos, binos, higgsinos, and sleptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for direct production of winos and higgsinos in events with two same-charge leptons or three leptons in $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for direct production of electroweakinos in final states with one lepton, jets and missing transverse momentum in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

Cited by in corpus (5)

• Probing sub-TeV Higgsinos aided by a ML-based top tagger in the context of Trilinear RPV SUSY
• General search for supersymmetric particles in scenarios with compressed mass spectra using proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Markov Chain Monte Carlo analysis to probe trilinear $R$-parity violating SUSY scenarios and possible LHC signatures
• Search for Higgsinos in final states with low-momentum lepton-track pairs at 13 TeV
• Search for new physics in jet multiplicity patterns of multilepton events at $\sqrt{s}$ = 13 TeV