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Abstract
The production of four top quarks (ttt¯ t)¯ is studied with LHC proton-proton collision data samples
collected by the CMS experiment at a center-of-mass energy of 13 TeV, and corresponding to integrated
luminosities of up to 138 fb−1. Events that have no leptons (all-hadronic), one lepton, or two oppositesign leptons (where lepton refers only to prompt electrons or prompt muons) are considered. This is
the first ttt¯ t measurement ¯ that includes the all-hadronic final state. The observed significance of the ttt¯ t¯
signal in these final states of 3.9 standard deviations (1.5 expected) provides evidence for ttt¯ t production, ¯
with a measured cross section of 36+12
−11 fb. Combined with earlier CMS results in other final states, the
signal significance is 4.0 standard deviations (3.2 expected). The combination returns an observed cross
section of 17 ± 4 (stat) ± 3 (syst) fb, which is consistent with the standard model prediction.
collected by the CMS experiment at a center-of-mass energy of 13 TeV, and corresponding to integrated
luminosities of up to 138 fb−1. Events that have no leptons (all-hadronic), one lepton, or two oppositesign leptons (where lepton refers only to prompt electrons or prompt muons) are considered. This is
the first ttt¯ t measurement ¯ that includes the all-hadronic final state. The observed significance of the ttt¯ t¯
signal in these final states of 3.9 standard deviations (1.5 expected) provides evidence for ttt¯ t production, ¯
with a measured cross section of 36+12
−11 fb. Combined with earlier CMS results in other final states, the
signal significance is 4.0 standard deviations (3.2 expected). The combination returns an observed cross
section of 17 ± 4 (stat) ± 3 (syst) fb, which is consistent with the standard model prediction.
Datum van beschikbaarheid | 5 aug 2023 |
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Uitgever | HEPData |
Format
- Format
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iBOF/23/074: Ontsluiten van de charm-Higgs koppeling bij de LHC
D'Hondt, J., Lowette, S., Van Mechelen, P. & Dobur, D.
1/01/23 → 31/12/26
Project: Fundamenteel
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Onderzoekersoutput
- 1 Article
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Evidence for four-top quark production in proton-proton collisions at s=13TeV
CMS Collaboration, 10 sep 2023, In: Phys. Lett. B. 844, 2023, 23 blz., 138076.Onderzoeksoutput: Article › peer review
Open AccessBestand9 Citaten (Scopus)18 Downloads (Pure)