Measurement of the WZ production cross section in pp collisions at sqrt(s) = 13 TeV

TL;DR

This paper reports a measurement of the WZ production cross section in proton-proton collisions at 13 TeV using CMS data, confirming consistency with the Standard Model predictions.

Contribution

First measurement of WZ cross section at 13 TeV in leptonic decay modes with detailed uncertainty analysis.

Findings

Measured cross section: 39.9 pb

Results agree with Standard Model predictions

Uncertainty components are statistically and systematically quantified

Abstract

The WZ production cross section in proton-proton collisions at sqrt(s) = 13 TeV is measured with the CMS experiment at the LHC using a data sample corresponding to an integrated luminosity of 2.3 inverse femtobarns. The measurement is performed in the leptonic decay modes WZ to l nu l' l', where l, l'= e, mu. The measured cross section for the range 60 < m[l'l'] < 120 GeV is sigma(pp to WZ) = 39.9 +/- 3.2 (stat) +2.9/-3.1 (syst) +/- 0.4 (theo) +/- 1.3 (lumi) pb, consistent with the standard model prediction.