Abstract
A
bstract
Measurements of fiducial and total inclusive cross sections for W and Z boson production are presented in proton-proton collisions at
s
= 5.02 and 13 TeV. Electron and muon decay modes (
ℓ
= e or
μ
) are studied in the data collected with the CMS detector in 2017, in dedicated runs with reduced instantaneous luminosity. The data sets correspond to integrated luminosities of 298 ± 6 pb
−
1
at 5.02 TeV and 206 ± 5 pb
−
1
at 13 TeV. Measured values of the products of the total inclusive cross sections and the branching fractions at 5.02 TeV are
σ
(pp
→
W + X)
B
(W
→ ℓν
) = 7300
±
10 (stat)
±
60 (syst)
±
140 (lumi) pb, and
σ
(pp
→
Z+X)
B
(Z
→ ℓ
+
ℓ
−
) = 669
±
2 (stat)
±
6 (syst)
±
13 (lumi) pb for the dilepton invariant mass in the range of 60–120 GeV. The corresponding results at 13 TeV are 20480
±
10 (stat)
±
170 (syst)
±
470 (lumi) pb and 1952
±
4 (stat)
±
18 (syst)
±
45 (lumi) pb. The measured values agree with cross section calculations at next-to-next-to-leading-order in perturbative quantum chromodynamics. Fiducial and total inclusive cross sections, ratios of cross sections of W
+
and W
−
production as well as inclusive W and Z boson production, and ratios of these measurements at 5.02 and 13 TeV are reported.