Abstract
Precision tests of the Standard Model (SM) require not only accurate experiments, but also precise and reliable theoretical predictions. Triple vector boson production provides a unique opportunity to investigate the quartic gauge couplings and check the validity of the gauge principle in the SM. Since the tree-level predictions alone are inadequate to meet this demand, the next-to-leading order (NLO) calculation becomes compulsory. In this paper, we calculate the NLO QCD + NLO electroweak (EW) corrections to the W ± ZZ productions with subsequent leptonic decays at the 14 TeV LHC by adopting an improved narrow width approximation which takes into account the off-shell contributions and spin correlations from the W ±- and Z-boson leptonic decays. The NLO QCD+EW corrected integrated cross sections for the W ± ZZ productions and some kinematic distributions of final products are provided. The results show that both the NLO QCD and NLO EW corrections are significant. In the jet-veto event selection scheme with p cut T,jet = 50 GeV, the NLO QCD+EW relative corrections to the integrated cross section are 20.5% and 31.1%, while the genuine NLO EW relative corrections are −5.42% and −4.58%, for the W + ZZ and W − ZZ productions, respectively. We also investigate the theoretical dependence of the integrated cross section on the factorization/renormalization scale, and find that the scale uncertainty is underestimated at the LO due to the fact that the strong coupling α s is not involved in the LO matrix elements.
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ArXiv ePrint: 1507.03693
An erratum to this article is available at http://dx.doi.org/10.1007/JHEP10(2016)156.
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Yong-Bai, S., Ren-You, Z., Wen-Gan, M. et al. NLO QCD + NLO EW corrections to WZZ productions with leptonic decays at the LHC. J. High Energ. Phys. 2015, 186 (2015). https://doi.org/10.1007/JHEP10(2015)186
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DOI: https://doi.org/10.1007/JHEP10(2015)186