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Article
Report number arXiv:2301.08096 ; CMS-SUS-21-003 ; CERN-EP-2022-254 ; CMS-SUS-21-003-003
Title Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at s= 13 TeV
Author(s) CMS Collaboration  显示全部 2358 名作者
Corporate Author(s) CMS Collaboration
Publication 2023-06-12
Imprint 19 Jan 2023
Number of pages 26
Note Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-21-003 (CMS Public Pages)
In: JHEP 2306 (2023) 060
DOI 10.1007/JHEP06(2023)060
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords supersymmetry
Abstract A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark (˜t1), is presented. The search targets the four-body decay of the ˜t1, which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino (˜χ01), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m(˜t1) and m(˜χ01). The contribution from leading background processes is estimated from data. No significant excess is observed above the expectation from standard model processes. The results of this search exclude top squarks at 95% confidence level for masses up to 480 and 700 GeV for m(˜t1)m(˜χ01)= 10 and 80 GeV, respectively.
Related document supersedes: CMS-PAS-SUS-21-003
Copyright/License Publication: © 2023-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³
Preprint: © 2022-2025 CERN (License: CC-BY-4.0)



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Email contact: cms-publication-committee-chair@cern.ch


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