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

ATLAS Publications, T.M. Carter, A. Hasib, M.P. Heath, S. Palazzo, A. Søgaard, E.P. Takeva, N. Themistokleous, E.M. Villhauer

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

A search for long-lived particles, which have come to rest within the ATLAS de-
tector, 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 decays 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 → q ¯q ˜χ01) = 100%, with masses of up to 1.4 TeV excluded for gluino lifetimes of 10−5to 103 s.
Original languageEnglish
Article number173
Pages (from-to)1-48
Number of pages48
Journal Journal of High Energy Physics
Volume2021
Issue number7
DOIs
Publication statusPublished - 23 Jul 2021

Keywords / Materials (for Non-textual outputs)

  • Hadron-Hadron scattering (experiments)

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