The first observation of the electroweak (EW) production of a Z boson, a photon, and two forward jets (Zγjj) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. A data set corresponding to an integrated luminosity of 137  fb−1, collected by the CMS experiment at the LHC in 2016–2018 is used. The measured fiducial cross section for EW Zγjj is σEW=5.21±0.52(stat)±0.56(syst)  fb=5.21±0.76  fb. Single-differential cross sections in photon, leading lepton, and leading jet transverse momenta, and double-differential cross sections in mjj and |Δηjj| are also measured. Exclusion limits on anomalous quartic gauge couplings are derived at 95% confidence level in terms of the effective field theory operators M0 to M5, M7, T0 to T2, and T5 to T9.

(2021). Measurement of the electroweak production of Zγ and two jets in proton-proton collisions at √s=13  TeV and constraints on anomalous quartic gauge couplings [journal article - articolo]. In PHYSICAL REVIEW D. Retrieved from http://hdl.handle.net/10446/195736

Measurement of the electroweak production of Zγ and two jets in proton-proton collisions at √s=13  TeV and constraints on anomalous quartic gauge couplings

Re, V.;Vai, I.;
2021-01-01

Abstract

The first observation of the electroweak (EW) production of a Z boson, a photon, and two forward jets (Zγjj) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. A data set corresponding to an integrated luminosity of 137  fb−1, collected by the CMS experiment at the LHC in 2016–2018 is used. The measured fiducial cross section for EW Zγjj is σEW=5.21±0.52(stat)±0.56(syst)  fb=5.21±0.76  fb. Single-differential cross sections in photon, leading lepton, and leading jet transverse momenta, and double-differential cross sections in mjj and |Δηjj| are also measured. Exclusion limits on anomalous quartic gauge couplings are derived at 95% confidence level in terms of the effective field theory operators M0 to M5, M7, T0 to T2, and T5 to T9.
articolo
2021
Inglese
online
104
7 (art. 072001)
1
29
Settore FIS/01 - Fisica Sperimentale
Photons; W & Z bosons; Hadron colliders
indice consultabile alla pagina https://journals.aps.org/prd/issues/104/7
Tumasyan, A.; Adam, W.; Andrejkovic, J.  W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.; Kramme...espandi
info:eu-repo/semantics/article
open
(2021). Measurement of the electroweak production of Zγ and two jets in proton-proton collisions at √s=13  TeV and constraints on anomalous quartic gauge couplings [journal article - articolo]. In PHYSICAL REVIEW D. Retrieved from http://hdl.handle.net/10446/195736
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