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Polarization observables in WZ production at the 13 TEV Lhc: Inclusive case

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We present a study of the polarization observables of the W and Z bosons in the process pp → W±Z → e ±νeµ +µ − at the 13 TeV Large Hadron Collider. The calculation is performed at next-to-leading order, including the full QCD corrections as well as the electroweak corrections, the latter being calculated in the double-pole approximation. The results are presented in the helicity coordinate system adopted by ATLAS and for different inclusive cuts on the di-muon invariant mass. We define left-right charge asymmetries related to the polarization fractions between the W+Z and W−Z channels and we find that these asymmetries are large and sensitive to higher-order effects. Similar findings are also presented for charge asymmetries related to a P-even angular coefficient. | Polarization observables in WZ production at the 13 TEV Lhc: Inclusive case