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Search for displaced leptons in √s =13 TeV pp collisions with the ATLAS detector

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    0548988 - FZÚ 2022 RIV US eng J - Journal Article
    Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2836 authors
    Search for displaced leptons in √s =13 TeV pp collisions with the ATLAS detector.
    Physical Review D. Roč. 127, č. 5 (2021), č. článku 051802. ISSN 2470-0010. E-ISSN 2470-0029
    R&D Projects: GA MŠk(CZ) LTT17018
    Research Infrastructure: CERN-CZ II - 90104
    Institutional support: RVO:68378271
    Keywords : ATLAS * CERN LHC Coll * lepton: impact parameter * final state: (dilepton)
    OECD category: Particles and field physics
    Impact factor: 5.296, year: 2020
    Method of publishing: Open access

    A search for charged leptons with large impact parameters using 139  fb−1 of 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, 680, and 340  GeV, respectively, are excluded at 95% confidence level, drastically improving on the previous best limits from LEP.
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