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arXiv · 1607.06799

Monte Carlo simulations of Higgs-boson production at the LHC with the KrkNLO method

S. Jadach·G. Nail·W. Placzek·S. Sapeta·A. Siodmok·M. Skrzypek
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Abstract

We present numerical tests and predictions of the KrkNLO method for matching of NLO QCD corrections to hard processes with LO parton shower Monte Carlo generators (NLO+PS). This method was described in detail in our previous publications, where it was also compared with other NLO+PS matching approaches (MC@NLO and POWHEG) as well as fixed-order NLO and NNLO calculations. Here we concentrate on presenting some numerical results (cross sections and distributions) for $Z/γ^*$ (Drell-Yan) and Higgs-boson production processes at the LHC. The Drell--Yan process is used mainly to validate the KrkNLO implementation in the Herwig 7 program with respect to the previous implementation in Sherpa. We also show predictions for this process with the new, complete, MC-scheme parton distribution functions and compare them with our previously published results. Then, we present the first results of the KrkNLO method for Higgs production in gluon-gluon fusion at the LHC and compare them with MC@NLO and POWHEG predictions from Herwig 7 fixed-order results from HNNLO and a resummed calculation from HqT, as well as with experimental data from the ATLAS collaboration.

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S. Jadach, G. Nail, W. Placzek, S. Sapeta, A. Siodmok, M. Skrzypek. 2017-05-04. Monte Carlo simulations of Higgs-boson production at the LHC with the KrkNLO method. https://doi.org/10.1140/epjc%2Fs10052-017-4733-9

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