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Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in pp collisions at √s=13 TeV with the ATLAS detector

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A search for long-lived particles decaying into hadrons and at least one muon is presented. The analysis selects events that pass a muon or missing-transverse-momentum trigger and contain a displaced muon track and a displaced vertex. The analyzed dataset of proton-proton collisions at √s=13 TeV was...

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Autori principali: Aad, Georges (Autore) , Anders, Christoph (Autore) , Andrei, George Victor (Autore) , Antel, Claire (Autore) , Bolz, Arthur (Autore) , Dunford, Monica (Autore) , Ferreira de Lima, Danilo Enoque (Autore) , Franchino, Silvia (Autore) , Helary, Louis (Autore) , Jongmanns, Jan (Autore) , Klassen, Martin (Autore) , Kolb, Mathis (Autore) , Krishnan, Anjali (Autore) , Kugel, Andreas (Autore) , Lisovyi, Mykhailo (Autore) , Meyer zu Theenhausen, Hanno (Autore) , Napolitano, Fabrizio (Autore) , Ott, Philipp (Autore) , S̜ahinsoy, Merve (Autore) , Schöning, André (Autore) , Schultz-Coulon, Hans-Christian (Autore) , Spieker, Thomas (Autore) , Stamen, Rainer (Autore) , Starovoitov, Pavel (Autore) , Suchek, Stanislav (Autore) , Vigani, Luigi (Autore) , Wang, Jike (Autore) , Weber, Sebastian (Autore) , Wessels, Martin (Autore) , Yue, Xiaoguang (Autore)
Ente Autore: ATLAS Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 14 August 2020
In: Physical review
Year: 2020, Volume: 102, Fascicolo: 3
ISSN:2470-0029
DOI:10.1103/PhysRevD.102.032006
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.102.032006
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.102.032006
Testo
Note sull'autore:G. Aad et al. (ATLAS Collaboration)
Descrizione
Riassunto:A search for long-lived particles decaying into hadrons and at least one muon is presented. The analysis selects events that pass a muon or missing-transverse-momentum trigger and contain a displaced muon track and a displaced vertex. The analyzed dataset of proton-proton collisions at √s=13 TeV was collected with the ATLAS detector and corresponds to 136 fb−1. The search employs dedicated reconstruction techniques that significantly increase the sensitivity to long-lived particle decays that occur in the ATLAS inner detector. Background estimates for Standard Model processes and instrumental effects are extracted from data. The observed event yields are compatible with those expected from background processes. The results are presented as limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model, and interpreted as exclusion limits in scenarios with pair production of long-lived top squarks that decay via a small R-parity-violating coupling into a quark and a muon. Top squarks with masses up to 1.7 TeV are excluded for a lifetime of 0.1 ns, and masses below 1.3 TeV are excluded for lifetimes between 0.01 ns and 30 ns.
Descrizione del documento:ATLAS Collaboration: Georges Aad, Christoph Anders, George Victor Andrei, Claire Antel, Arthur Bolz, Monica Dunford, Danilo Enoque Ferreira de Lima, Silvia Franchino, Louis Helary, Jan Jongmanns, Martin Klassen, Mathis Kolb, Anjali Krishnan, Andreas Kugel, Mykhailo Lisovyi, Hanno Meyer zu Theenhausen, Fabrizio Napolitano, Philipp Ott, Merve Sahinsoy, André Schöning, Hans-Christian Schultz-Coulon, Thomas Spieker, Rainer Stamen, Pavel Starovoitov, Stanislav Suchek, Luigi Vigani, Jike Wang, Sebastian Weber, Martin Wessels, Xiaoguang Yue und weitere 2921
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Gesehen am 24.09.2020
Descrizione fisica:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.102.032006

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