We consider the MiNNLOPS method to consistently combine next-to-next-to-leading order (NNLO) QCD calculations with parton-shower simulations. We identify the main sources of differences between MiNNLOPS and fixed-order NNLO predictions for inclusive observables due to corrections beyond NNLO accuracy and present simple prescriptions to either reduce or remove them. Refined predictions are presented for Higgs, charged- and neutral-current Drell Yan production. The agreement with fixed-order NNLO calculations is considerably improved for inclusive observables and scale uncertainties are reduced. The codes are released within the POWHEG-BOX.
Monni, P., Re, E., Wiesemann, M. (2020). MiNNLO PS : optimizing 2 → 1 hadronic processes. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 80(11) [10.1140/epjc/s10052-020-08658-5].
MiNNLO PS : optimizing 2 → 1 hadronic processes
Re E.;
2020
Abstract
We consider the MiNNLOPS method to consistently combine next-to-next-to-leading order (NNLO) QCD calculations with parton-shower simulations. We identify the main sources of differences between MiNNLOPS and fixed-order NNLO predictions for inclusive observables due to corrections beyond NNLO accuracy and present simple prescriptions to either reduce or remove them. Refined predictions are presented for Higgs, charged- and neutral-current Drell Yan production. The agreement with fixed-order NNLO calculations is considerably improved for inclusive observables and scale uncertainties are reduced. The codes are released within the POWHEG-BOX.
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