Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
AffiliationDepartment of Physics, University of Arizona
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CitationAad, G., ATLAS Collaboration., Abbott, B. et al. Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC. Eur. Phys. J. C 81, 11 (2021).
JournalEuropean Physical Journal C
RightsCopyright © CERN for the benefit of the ATLAS collaboration 2021, corrected publication 2021. This article is licensed under a Creative Commons Attribution 4.0 International License.
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AbstractA search is presented for new phenomena in events characterised by high jet multiplicity, no leptons (electrons or muons), and four or more jets originating from the fragmentation of b-quarks (b-jets). The search uses 139fb-1 of s = 13 TeV proton–proton collision data collected by the ATLAS experiment at the Large Hadron Collider during Run 2. The dominant Standard Model background originates from multijet production and is estimated using a data-driven technique based on an extrapolation from events with low b-jet multiplicity to the high b-jet multiplicities used in the search. No significant excess over the Standard Model expectation is observed and 95% confidence-level limits that constrain simplified models of R-parity-violating supersymmetry are determined. The exclusion limits reach 950 GeV in top-squark mass in the models considered. © 2021, The Author(s).
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VersionFinal published version
Except where otherwise noted, this item's license is described as Copyright © CERN for the benefit of the ATLAS collaboration 2021, corrected publication 2021. This article is licensed under a Creative Commons Attribution 4.0 International License.