Search for displaced leptons in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector

Abstract

A search for charged leptons with large impact parameters using 139 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data from the ATLAS detector at the LHC is presented, addressing a long-standing gap in coverage of possible new physics signatures. Results are consistent with the background prediction. This search provides unique sensitivity to long-lived scalar supersymmetric lepton-partners (sleptons). For lifetimes of 0.1 ns, selectron, smuon and stau masses up to 720 GeV, 680 GeV, and 340 GeV are respectively excluded at 95% confidence level, drastically improving on the previous best limits from LEP.

arXiv comment30 pages in total, author list starting page 15, 2 figures, 2 tables, published in PRL. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-14

References in corpus (61)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Parton distributions with LHC data
• Bounds on Universal Extra Dimensions
• R-parity violating supersymmetry
• Supersymmetric Unification Without Low Energy Supersymmetry And Signatures for Fine-Tuning at the LHC
• Performance of the ATLAS Trigger System in 2015
• Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV
• Production and Integration of the ATLAS Insertable B-Layer
• Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data
• Simplified Models for LHC New Physics Searches
• The Production of Charginos/Neutralinos and Sleptons at Hadron Colliders
• 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
• Bosonic Supersymmetry? Getting Fooled at the LHC
• Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• HistFitter software framework for statistical data analysis
• Searches for supersymmetric particles in e+e- collisions up to 208 GeV and interpretation of the results within the MSSM
• Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• Precision predictions for electroweak superpartner production at hadron colliders with Resummino
• Searches for electroweak production of charginos, neutralinos, and sleptons decaying to leptons and W, Z, and Higgs bosons in pp collisions at 8 TeV
• Split Supersymmetry
• Gaugino production in proton-proton collisions at a center-of-mass energy of 8 TeV
• Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Performance of the ATLAS Track Reconstruction Algorithms in Dense Environments in LHC Run 2
• Searching for Directly Decaying Gluinos at the Tevatron
• Search for long-lived charginos based on a disappearing-track signature in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for heavy neutral leptons in decays of $W$ bosons produced in 13 TeV $pp$ collisions using prompt and displaced signatures with the ATLAS detector
• Search for long-lived, massive particles in events with displaced vertices and missing transverse momentum in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector
• Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at sqrt(s) = 8 TeV
• Searches for physics beyond the standard model with the $M_{T2}$ variable in hadronic final states with and without disappearing tracks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Threshold resummation for gaugino pair production at hadron colliders
• Search for supersymmetric partners of electrons and muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
• Search for Displaced Supersymmetry in events with an electron and a muon with large impact parameters
• Search for long-lived particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer
• Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for metastable heavy charged particles with large ionization energy loss in pp collisions at $\sqrt{s}=13$ TeV using the ATLAS experiment
• Search for long-lived neutral particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter
• ABCDisCo: Automating the ABCD Method with Machine Learning
• Search for gauge mediated SUSY breaking topologies in e+e- collisions at centre-of-mass energies up to 209GeV
• Long-Lived Staus and Displaced Leptons at the LHC
• Search for long-lived particles using displaced jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Neutralino/chargino pair production at NLO+NLL with resummation-improved PDFs for LHC Run II
• Mass Spectrum in R-Parity Violating mSUGRA and Benchmark Points
• Search for long-lived particles decaying into displaced jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for long-lived particles using nonprompt jets and missing transverse momentum with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for long-lived particles in final states with displaced dimuon vertices in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Search for long-lived neutral particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer
• Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searches for Gauge-Mediated Supersymmetry Breaking Topologies in e+e- collisions at LEP2
• Search for long-lived particles with displaced vertices in multijet events in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for metastable heavy charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s}$ = 8 TeV using the ATLAS experiment
• Search for long-lived particles using delayed photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Performance of the reconstruction of large impact parameter tracks in the inner detector of ATLAS
• Search for supersymmetric particles in light gravitino scenarios and sleptons NLSP
• Search for R-parity violating supersymmetry with displaced vertices in proton-proton collisions at sqrt(s) = 8 TeV

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• Publishing statistical models: Getting the most out of particle physics experiments
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