Search for Displaced Leptons in root s=13 TeV pp Collisions with the ATLAS Detector
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American Physical Society
Aad, G... [et al.] (2021). Search for Displaced Leptons in root s=13 TeV pp Collisions with the ATLAS Detector. PHYSICAL REVIEW LETTERS 127(5), 051802. DOI: [10.1103/PhysRevLett.127.051802]
SponsorshipANPCyT; Yerevan Physics Institute, Armenia; Australian Research Council; BMWFW and FWF, Austria; Azerbaijan National Academy of Sciences (ANAS); SSTC, Belarus; CNPq and FAPESP, Brazil; Natural Sciences and Engineering Research Council of Canada (NSERC); CERN; Agencia Nacional de Investigacion y Desarrollo, Chile; Chinese Academy of Sciences; Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; MSMT CR, MPO CR, and Committee for Collaboration of the Czech Republic with CERN, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; Shota Rustaveli National Science Foundation of Georgia, Giorgia; BMBF, HGF, and MPG, Germany; Greek Ministry of Development-GSRT; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; Istituto Nazionale di Fisica Nucleare (INFN); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science; CNRST, Morocco; Netherlands Organization for Scientific Research (NWO) Netherlands Government; Research Council of Norway; MNiSW and NCN, Poland; Portuguese Foundation for Science and Technology European Commission; MNE/IFA, Romania; JINR; Ministry of Education and Science of the Russian Federation, Russian Federation and NRC KI, Russian Federation;; Ministry of Education, Science and Technological Development, Serbia; Ministry of Education, Science, Research and Sport, Slovakia; ARRS and Ministry of Education, Science and Sport, Slovenia; DST/NRF, South Africa; Spanish Government; Ministry of Education, Science and Sport, Slovenia and Wallenberg Foundation, Sweden; Secretariat for Education and Research, Switzerland, SNSF, and Cantons of Bern and Geneva, Switzerland; Ministry of Science and Technology, Taiwan; Ministry of Energy & Natural Resources - Turkey; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); DOE and NSF, United States of America.; BCKDF, CANARIE, Compute Canada, CRC, and IVADO, Canada; Beijing Municipal Science & Technology Commission; COST, ERC, ERDF, Horizon 2020, and Marie Sklodowska-Curie Actions, European Union; French National Research Agency (ANR); DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programs cofinanced by EU-ESF and the Greek National Strategic Reference Framework, Greece; BSF-NSF and GIF, Israel; La Caixa Banking Foundation, CERCA Program Generalitat de Catalunya and PROMETEO and GenT Programs Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; Royal Society and Leverhulme Trust, United Kingdom
A search for charged leptons with large impact parameters using 139 fb−1 of ffisffiffi p ¼ 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, 680, and 340 GeV, respectively, are excluded at 95% confidence level, drastically improving on the previous best limits from LEP.