PoS - Proceedings of Science
Volume 432 - 16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2023) - Main session
Combining NNLO QCD and NLO EW corrections matched to parton showers for $W^\pm Z$ production using $\mathrm{MiNNLO}_\mathrm{PS}$
S. Zanoli
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Pre-published on: November 09, 2023
Published on: January 22, 2024
We present results for $W^\pm Z$ production at NNLO QCD and NLO electroweak (EW) accuracy matched to parton showers. NNLO QCD corrections matched to parton showers are obtained through the $\mathrm{MiNNLO}_\mathrm{PS}$ method, while NLO EW results matched to parton showers are produced using the POWHEG approach. We identify different combination schemes between QCD and EW corrections with QCD and/or QED showers and we conduct a phenomenological study to analyze their capabilities for describing certain kinematic regions of relevant distributions. We present results for the fully leptonic decay channel $pp \to \ell^+\ell^-\ell'^\pm \nu_{\ell'}$, with both $\ell'\neq\ell$ and $\ell'=\ell$, including spin correlation, interferences and off-shell effects. We observe that NNLO QCD corrections with both QCD and QED showers provide an excellent description of the bulk of the cross section, while EW corrections become dominant in the deep tails of kinematic distributions. Our results are in good agreement with recent ATLAS data.
DOI: https://doi.org/10.22323/1.432.0068
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