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

Physical Review D 2021
CMS Collaboration, Toms Torims, Viesturs Veckalns

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.

DOI
10.1103/PhysRevD.104.072001
Hyperlink
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.072001

The CMS Collaboration, Tumasyan, A., Torims, T., Veckalns, V. ... [et al.]. 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. Physical Review D, 2021, Vol. 104, No. 7, Article number 072001. ISSN 2470-0010. e-ISSN 2470-0029. Available from: doi:10.1103/PhysRevD.104.072001

Publication language
English (en)