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arXiv · 1609.09719

ZZ production in gluon fusion at NLO matched to parton-shower

Simone Alioli·Fabrizio Caola·Gionata Luisoni·Raul Röntsch
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Abstract

We present a calculation of the next-to-leading order (NLO) QCD corrections to the hadroproduction process $gg\to ZZ \to e^+e^- \mu^+ \mu^-$, matched to the parton shower in the POWHEG framework. We take advantage of the POWHEG BOX tool for the implementation and rely on PYTHIA 8 for the showering and hadronization stages. We fully include $\gamma^*/Z$ interference effects, while also covering the single-resonant region. For this phenomenological study we focus on four lepton production as a signal process, neglecting all quark mass effects as well as the Higgs-mediated contributions, which are known to be subdominant in this case. We provide predictions from our simulations for the 13 TeV LHC Run II setup, including realistic experimental cuts.

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Simone Alioli, Fabrizio Caola, Gionata Luisoni, Raul Röntsch. 2016-09-30. ZZ production in gluon fusion at NLO matched to parton-shower. https://doi.org/10.1103/physrevd.95.034042

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