A search for the decays of stopped long-lived particles at √s = 13 TeV with the ATLAS detector


Aad, G ORCID: 0000-0002-6665-4934, Abbott, B ORCID: 0000-0002-5888-2734, Abbott, DC ORCID: 0000-0002-7248-3203, Abed Abud, A ORCID: 0000-0002-2788-3822, Abeling, K ORCID: 0000-0002-1002-1652, Abhayasinghe, DK ORCID: 0000-0002-2987-4006, Abidi, SH ORCID: 0000-0002-8496-9294, AbouZeid, OS ORCID: 0000-0002-8279-9324, Abraham, NL, Abramowicz, H ORCID: 0000-0001-5329-6640 et al (show 90 more authors) (2021) A search for the decays of stopped long-lived particles at √s = 13 TeV with the ATLAS detector Journal of High Energy Physics, 2021 (7). 173-. ISSN 1126-6708, 1029-8479

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Abstract

A search for long-lived particles, which have come to rest within the ATLAS detector, is presented. The subsequent decays of these particles can produce high-momentum jets, resulting in large out-of-time energy deposits in the ATLAS calorimeters. These de- cays are detected using data collected during periods in the LHC bunch structure when collisions are absent. The analysed dataset is composed of events from proton-proton collisions produced by the Large Hadron Collider at a centre-of-mass energy of s = 13 TeV and recorded by the ATLAS experiment during 2017 and 2018. The dataset used for this search corresponds to a total live time of 579 hours. The results of this search are used to derive lower limits on the mass of gluino R-hadrons, assuming a branching fraction B(g~→qq¯χ10) = 100%, with masses of up to 1.4 TeV excluded for gluino lifetimes of 10−5 to 103 s. [Figure not available: see fulltext.]

Item Type: Article
Additional Information: 48 pages in total, author list starting page 32, 10 figures, 8 tables, published in JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-15
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 06 Sep 2021 10:05
Last Modified: 01 Mar 2026 10:20
DOI: 10.1007/JHEP07(2021)173
Open Access URL: https://link.springer.com/article/10.1007%2FJHEP07...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3136076
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