Measurement of the inclusive cross sections for W and Z boson production in proton-proton collisions at √s = 5.02 and 13 TeVстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.
Аннотация: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.