CMS-PAS-SMP-21-011

CMS-PAS-SMP-21-011
Measurement of electroweak production of W $\gamma$ with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV
CMS Collaboration
May 2022

Abstract: A measurement is presented for the electroweak production of a W boson, a photon ( $\gamma$ ), and two jets (j) in proton-proton collisions. The leptonic decay of W boson is selected by requiring one identified electron or muon and a large missing transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is performed with the data collected by the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb $^{-1}$ . The cross section for the electroweak W $\gamma$ jj production in a restricted fiducial region is 19.2 $\pm$ 4.0 fb, while the inclusive cross section for W $\gamma$ jj production in the same fiducial region is 90 $\pm$ 11 fb. Differential cross sections are also measured with the distributions unfolded to the parton level. Constraints are placed on anomalous quartic gauge couplings in terms of dimension-8 effective field theory operators. All results are in agreement with standard model expectations.
Links: CDS record (PDF) ; Physics Briefing ; CADI line (restricted) ; These preliminary results are superseded in this paper, PRD 108 (2023) 032017. The superseded preliminary plots can be found here.

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