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Article
Report number arXiv:2203.00587 ; CERN-EP-2021-195
Title Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at s=13  TeV
Author(s) ATLAS Collaboration  Show all 2953 authors
Corporate Author(s) ATLAS Collaboration
Publication 2022-08-01
Imprint 02 Mar 2022
Number of pages 41
Note 41 pages in total, author list starting page 25, 5 figures, 5 tables, published in Phys Rev D. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2019-24
In: Phys. Rev. D 106 (2022) 032005
DOI 10.1103/PhysRevD.106.032005 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; experimental results ; long lived particles
Abstract A search for events with two displaced vertices from long-lived particles (LLP) pairs using data collected by the ATLAS detector at the LHC is presented. This analysis uses 139 fb1 of proton-proton collision data at s=13 TeV recorded in 2015 - 2018. The search employs techniques for reconstructing vertices of LLPs decaying to jets in the muon spectrometer displaced between 3 m and 14 m with respect to the primary interaction vertex. The observed numbers of events are consistent with the expected background and limits for several benchmark signals are determined. For the Higgs boson with a mass of 125 GeV, the paper reports the first exclusion limits for branching fractions into neutral long-lived particles below 0.1%, while branching fractions above 10% are excluded at 95% confidence level for LLP proper lifetimes ranging from 4 cm to 72.4 m. In addition, the paper present the first results for the decay of LLPs into into tt¯ in the ATLAS muon spectrometer.
Related document supersedes: ATLAS-CONF-2021-032
Copyright/License publication: © 2022-2025 CERN (License: CC BY 4.0), sponsored by SCOAP³
preprint: © 2021-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 Záznam vytvorený 2022-03-02, zmenený 2024-06-13


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