engleski

Measurements of the electroweak diboson production cross sections in proton-proton collisions at √s=5.02  TeV using leptonic decays

The first measurements of diboson production cross sections in proton-proton interactions at a center-of-mass energy of 5.02 TeV are reported. They are based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 302 pb−1. Events with two, three, or four charged light leptons (electrons or muons) in the final state are analyzed. The WW, WZ, and ZZ total cross sections are measured as σWW=37.0+5.5−5.2(stat)+2.7−2.6(syst) pb, σWZ=6.4+2.5−2.1(stat)+0.5−0.3(syst) pb, and σZZ=5.3+2.5−2.1(stat)+0.5−0.4(syst) pb. All measurements are in good agreement with theoretical calculations at combined next-to-next-to-leading order quantum chromodynamics and next-to-leading order electroweak accuracy.

high energy physics ; experimental particle physics ; LHC ; CMS ; radiation-hard detectors ; Si microstrip and pad detectors ; radiation damage to detector materials (solid state) ; particle tracking detectors (solid-state detectors) ; radiation: damage ; CMS: upgrade ; tracking detector ; semiconductor detector: design ; semiconductor detector: microstrip ; performance ; Hadron-Hadron scattering (experiments) ; top physics ; p p: scattering ; p p: colliding beams ; top: single production

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