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Type: Journal article
Title: Search for bottom-squark pair production in pp collision events at √s = 13 TeV with hadronically decaying τ -leptons, b -jets, and missing transverse momentum using the ATLAS detector
Other Titles: Search for bottom-squark pair production in pp collision events at root s = 13 TeV with hadronically decaying τ -leptons, b -jets, and missing transverse momentum using the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adiguzel, A.
et al.
Citation: Physical Review D, 2021; 104(3):032014-1-032014-31
Publisher: American Physical Society (APS)
Issue Date: 2021
ISSN: 2470-0010
Statement of
G. Aad … D. Duvnjak … P. Jackson … A.X.Y. Kong … J.L. Oliver … H. Potti … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: A search for pair production of bottom squarks in events with hadronically decaying τ-leptons, b-tagged jets, and large missing transverse momentum is presented. The analyzed dataset is based on proton-proton collisions at √s=13  TeV delivered by the Large Hadron Collider and recorded by the ATLAS detector from 2015 to 2018, and corresponds to an integrated luminosity of 139  fb⁻¹. The observed data are compatible with the expected Standard Model background. Results are interpreted in a simplified model where each bottom squark is assumed to decay into the second-lightest neutralino (⁻χ02) and a bottom quark, with (˜χ02) decaying into a Higgs boson and the lightest neutralino (˜χ01). The search focuses on final states where at least one Higgs boson decays into a pair of hadronically decaying τ-leptons. This allows the acceptance and thus the sensitivity to be significantly improved relative to the previous results at low masses of the (˜χ02), where bottom-squark masses up to 850 GeV are excluded at the 95% confidence level, assuming a mass difference of 130 GeV between (˜χ02) and (˜χ01). Model-independent upper limits are also set on the cross section of processes beyond the Standard Model.
Rights: © 2021 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.
DOI: 10.1103/physrevd.104.032014
Grant ID: ARC
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Appears in Collections:Physics publications

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