Aad, G;
Abbott, B;
Abbott, DC;
Abud, AA;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... Zwalinski, L; + view all
(2021)
Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using \sqrt{s} = 13\hbox {TeV} proton–proton collision data.
The European Physical Journal C
, 81
(11)
, Article 1023. 10.1140/epjc/s10052-021-09761-x.
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Abstract
A search for R-parity-violating supersymmetry in final states characterized by high jet multiplicity, at least one isolated light lepton and either zero or at least three b-tagged jets is presented. The search uses {139}\,{\text {fb}^{-1}} of \sqrt{s} = {13}\hbox { TeV} proton–proton collision data collected by the ATLAS experiment during Run 2 of the Large Hadron Collider. The results are interpreted in the context of R-parity-violating supersymmetry models that feature gluino production, top-squark production, or electroweakino production. The dominant sources of background are estimated using a data-driven model, based on observables at medium jet multiplicity, to predict the b-tagged jet multiplicity distribution at the higher jet multiplicities used in the search. Machine-learning techniques are used to reach sensitivity to electroweakino production, extending the data-driven background estimation to the shape of the machine-learning discriminant. No significant excess over the Standard Model expectation is observed and exclusion limits at the 95% confidence level are extracted, reaching as high as 2.4 TeV in gluino mass, 1.35 TeV in top-squark mass, and 320 (365) GeV in higgsino (wino) mass.
| Type: | Article |
|---|---|
| Title: | Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using \sqrt{s} = 13\hbox {TeV} proton–proton collision data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-021-09761-x |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-021-09761-x |
| Language: | English |
| Additional information: | © 2021 Springer Nature Switzerland AG. This article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10139542 |
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