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Article
Report number arXiv:2306.17642 ; CERN-EP-2023-087
Title Search for leptoquark pair production decaying into teˉte+te¯te+ or tμˉtμ+tμ¯tμ+ in multi-lepton final states in pp collisions at s=13TeVs=13TeV with the ATLAS detector
Author(s) ATLAS Collaboration  ყველა 2974 ავტორის ჩვენება
Corporate Author(s) ATLAS Collaboration
Publication 2024-08-14
Imprint 30 Jun 2023
Number of pages 61
Note 61 pages in total, author list starting page 44, 11 figures, 6 tables, published by EPJC. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2020-08
In: Eur. Phys. J. C 84 (2024) 818
DOI 10.1140/epjc/s10052-024-12975-4
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; experimental results ; leptoquark
Abstract A search for leptoquark pair production decaying into teˉte+te¯te+ or tμˉtμ+tμ¯tμ+ in final states with multiple leptons is presented. The search is based on a dataset of pppp collisions at ss=13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb11. Events are selected with two or more light leptons (electron or muon) and at least two jets out of which at least one jet is identified as coming from a bb-hadron. Four signal regions, with the requirement of at least three light leptons, are considered based on the number of leptons of a given flavour. The main background processes are estimated using dedicated control regions in a simultaneous fit with the signal regions to data. No excess above the Standard Model background prediction is observed and 95% confidence level limits on the production cross section times branching ratio are derived as a function of the leptoquark mass. Under the assumption of exclusive decays into tete (tμtμ), the corresponding lower limit on the scalar mixed-generation leptoquark mass mLQdmixmLQdmix is at 1.58 (1.59) TeV and on the vector leptoquark mass m˜U1m~U1 at 1.67 (1.67) TeV in the minimal coupling scenario and at 1.95 (1.95) TeV in the Yang-Mills scenario.
Related document supersedes: ATLAS-CONF-2022-052
Copyright/License Publication: © 2024-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³
Preprint: © 2023-2025 CERN (License: CC-BY-4.0)



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


 ჩანაწერი შექმნილია 2023-06-30, ბოლოს შესწორებულია 2024-12-25


სრული ტექსტი:
2306.17642 - სრული ტექსტის ჩამოტვირთვაPDF
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