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arXiv · 1111.1444

Z0 - boson production in association with a top anti-top pair at NLO accuracy with parton shower effects

M. V. Garzelli·A. Kardos·C. G. Papadopoulos·Z. Trocsanyi
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Abstract

We present predictions for the production cross section of a Standard Model Z0-boson in association with a top-antitop pair at the next-to-leading order accuracy in QCD, matched with shower Monte Carlo programs to evolve the system down to the hadronization energy scale. We adopt a framework based on three well established numerical codes, namely the POWHEG-BOX, used for computing the cross section, HELAC-NLO, which generates all necessary input matrix elements, and finally a parton shower program, such as PYTHIA or HERWIG, which allows for including t-quark and Z0-boson decays at the leading order accuracy and generates shower emissions, hadronization and hadron decays.

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M. V. Garzelli, A. Kardos, C. G. Papadopoulos, Z. Trocsanyi. 2011-12-21. Z0 - boson production in association with a top anti-top pair at NLO accuracy with parton shower effects. https://doi.org/10.1103/physrevd.85.074022

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