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Evidence for electroweak production of four charged leptons and two jets in proton-proton collisions at $\sqrt{;;;;s};;;; =$ 13 TeV (CROSBI ID 307932)

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(CMS Collaboration) Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta et al. Evidence for electroweak production of four charged leptons and two jets in proton-proton collisions at $\sqrt{;;;;s};;;; =$ 13 TeV // Physics letters. B, 812 (2021), 135992, 38. doi: 10.1016/j.physletb.2020.135992

Podaci o odgovornosti

Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Vetens, Wren

CMS Collaboration

engleski

Evidence for electroweak production of four charged leptons and two jets in proton-proton collisions at $\sqrt{;;;;s};;;; =$ 13 TeV

Evidence is presented for the electroweak (EW) production of two jets (jj) in association with two Z bosons and constraints on anomalous quartic gauge couplings are set. The analysis is based on a data sample of proton-proton collisions at $\sqrt{; ; ; ; s}; ; ; ; = $ 13 TeV collected with the CMS detector in 2016-2018, and corresponding to an integrated luminosity of 137 fb$^{; ; ; ; -1}; ; ; ; $. The search is performed in the fully leptonic final state ZZ $\to$ $\ell\ell\ell'\ell'$, where $\ell, \ell' = $ e, $\mu$. The EW production of two jets in association with two Z bosons is measured with an observed (expected) significance of 4.0 (3.5) standard deviations. The cross sections for the EW production are measured in three fiducial volumes and the result is $\sigma_{; ; ; ; \mathrm{; ; ; ; EW}; ; ; ; }; ; ; ; $(pp $\to$ ZZjj $\to$ $\ell\ell\ell'\ell'$jj) = 0.33 $^{; ; ; ; +0.11}; ; ; ; _{; ; ; ; -0.10}; ; ; ; $ (stat) $^{; ; ; ; +0.04}; ; ; ; _{; ; ; ; -0.03}; ; ; ; $ (syst) fb in the most inclusive volume, in agreement with the standard model prediction of 0.275 $\pm$ 0.021 fb. Measurements of total cross sections for jj production in association with two Z bosons are also reported. Limits on anomalous quartic gauge couplings are derived in terms of the effective field theory operators T0, T1, T2, T8, and T9.

High energy physics ; Experimental particle physics ; LHC ; CMS ; Hadron-Hadron scattering (experiments) ; Higgs physics ; p p: colliding beams ; Higgs particle: pair production ; bottom: 2 ; p p: scattering ; Higgs particle: coupling ; Higgs particle: hadroproduction ; Higgs particle: decay modes ; bottom: pair production ; photon: pair production ; top: pair production ; coupling: Yukawa ; coupling constant: upper limit ; vector boson: fusion ; mass spectrum: two-photon ; Standard model

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Podaci o izdanju

812

2021.

135992

38

objavljeno

0370-2693

1873-2445

10.1016/j.physletb.2020.135992

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Fizika

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