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Measurements of p p → Z Z production cross sections and constraints on anomalous triple gauge couplings at √s=13TeV

Abstract:

The production of Z boson pairs in proton–proton (p p) collisions, p p → (Z / γ∗) (Z / γ∗) → 2 ℓ2 ℓ′, where ℓ, ℓ′= e or μ , is studied at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137fb-1, collected during 2016–2018. The Z Z production cross section, σtot(pp→ZZ)=17.4±0.3(stat)±0.5(syst)±0.4(theo)±0.3(lumi) pb, measured for events with two pairs of opposite-sign, same-flavor leptons produced in the mass region 60<mℓ+ℓ-<120GeV is consistent with standard model pbkp_redictions. Differential cross sections are also measured and agree with theoretical pbkp_redictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous Z Z Z and Z Z γ couplings.

Año de publicación:

2021

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Física de partículas

    Áreas temáticas:

    • Física moderna
    • Química inorgánica
    • Física

    Contribuidores:

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    Makarenko V.Makarenko V.
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    Valle A.E.D.Valle A.E.D.
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    D’Hondt J.D’Hondt J.
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    Zobec J.Zobec J.
    Zarucki M.Zarucki M.
    Janssen X.Janssen X.
    Wulz C.E.Wulz C.E.
    De Lentdecker G.De Lentdecker G.
    Tavernier S.Tavernier S.
    Chekhovsky V.Chekhovsky V.
    Tytgat M.Tytgat M.
    Skovpen K.Skovpen K.
    Favart L.Favart L.
    Dragicevic M.Dragicevic M.
    Van Doninck W.Van Doninck W.
    Darwish M.R.Darwish M.R.
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    Caputo C.Caputo C.
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    Verbeke W.Verbeke W.
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    Lemaitre V.Lemaitre V.
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    Niedziela M.Niedziela M.
    Moortgat S.Moortgat S.