Search for supersymmetry in events with at least three electrons or muons, jets, and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV

Abstract

A search for new physics is carried out in events with at least three electrons or muons in any combination, jets, and missing transverse momentum. Results are based on the sample of proton-proton collision data produced by the LHC at a center-of-mass energy of 13 TeV and collected by the CMS experiment in 2016. The data sample analyzed corresponds to an integrated luminosity of 35.9 fb${}^{-1}$. Events are classified according to the number of b jets, missing transverse momentum, hadronic transverse momentum, and the invariant mass of same-flavor dilepton pairs with opposite charge. No significant excess above the expected standard model background is observed. Exclusion limits at 95% confidence level are computed for four different supersymmetric simplified models with pair production of gluinos or third-generation squarks. In the model with gluino pair production, with subsequent decays into a top quark-antiquark pair and a neutralino, gluinos with masses smaller than 1610 GeV are excluded for a massless lightest supersymmetric particle. In the case of bottom squark pair production, the bottom squark masses are excluded up to 840 GeV for charginos lighter than 200 GeV. For a simplified model of heavy top squark pair production, the ${\tilde{\text{t}}}_2$ mass is excluded up to 720, 780, or 710 GeV for models with an exclusive ${\tilde{\text{t}}}_2\to {\tilde{\text{t}}}_1\mathrm{H}$ decay, an exclusive ${\tilde{\text{t}}}_2\to {\tilde{\text{t}}}_1\mathrm{Z}$ decay, or an equally probable mix of those two decays. In order to provide a simplified version of the analysis for easier interpretation, a small set of aggregate signal regions also has been defined, providing a compromise between simplicity and analysis sensitivity.

Replaced with the published version. Added the journal reference and DOI. All the figures and tables, including additional supplementary tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-16-041/ (CMS Public Pages)

References in corpus (18)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Particle-flow reconstruction and global event description with the CMS detector
• The CMS trigger system
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• ZZ production at hadron colliders in NNLO QCD
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Squark and gluino production cross sections in pp collisions at $\sqrt{s}$ = 13, 14, 33 and 100 TeV
• Higgs boson production in association with top quarks in the POWHEG BOX
• Next-to-leading order QCD corrections to t-tbar-Z production at the LHC
• Performance of the CMS missing transverse energy reconstruction in pp data at sqrt(s) = 8 TeV
• NLO QCD corrections to tri-boson production
• Next-to-Leading-Order QCD corrections to J/ψ(Υ)+γproduction at the LHC
• NLO QCD + EW corrections to $ZZZ$ production with subsequent leptonic decays at LHC
• Next-to-leading-order QCD corrections to $e^{+}{e}^{-}\to H+\gamma$

Cited by in corpus (12)

• Constraining new physics with SModelS version 2
• Clockwork / Linear Dilaton: Structure and Phenomenology
• Search for leptoquarks coupled to third-generation quarks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb${}^{-1}$ of data collected with the ATLAS detector
• GUT Physics in the era of the LHC
• Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons, $b$-jets and missing transverse momentum
• Search for physics beyond the standard model in events with jets and two same-sign or at least three charged leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• SModelS v2.3: enabling global likelihood analyses
• Combined search for electroweak production of winos, binos, higgsinos, and sleptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Searching for heavy Higgs in supersymmetric final states at the LHC
• Magnifying the ATLAS Stealth Stop Splinter: Impact of Spin Correlations and Finite Widths
• SModelS extension with the CMS supersymmetry search results from Run 2