First measurement of the top quark pair production cross section in proton-proton collisions at s = 13.6 TeV

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    Abstract

    The first measurement of the top quark pair (tt¯) production cross section in proton-proton collisions at s = 13.6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1.21 fb−1, are analyzed. Events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive tt¯ production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of 924−40+32 pb.

    Original languageEnglish
    Article number204
    JournalJournal of High Energy Physics
    Volume2023
    Issue number8
    DOIs
    Publication statusPublished - 2023 Sept

    Bibliographical note

    Publisher Copyright:
    © The Author(s) 2023.

    Keywords

    • Hadron-Hadron Scattering
    • Top Physics

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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