Abstract
We present a novel method to combine QCD calculations at next-to-next-to-leading order (NNLO) with parton shower (PS) simulations, that can be applied to the production of heavy systems in hadronic collisions, such as colour singlets or a toverline{t} pair. The NNLO corrections are included by connecting the MiNLO′ method with transverse- momentum resummation, and they are calculated at generation time without any additional reweighting, making the algorithm considerably efficient. Moreover, the combination of different jet multiplicities does not require any unphysical merging scale, and the matching preserves the structure of the leading logarithmic corrections of the Monte Carlo simulation for parton showers ordered in transverse momentum. We present proof-of-concept applications to hadronic Higgs production and the Drell-Yan process at the LHC.
Highlights
Modifications of the electroweak sector, induced by many BSM theories, can be unravelled through precision studies of electroweak interactions
We present a novel method to combine QCD calculations at next-to-next-toleading order (NNLO) with parton shower (PS) simulations, that can be applied to the production of heavy systems in hadronic collisions, such as colour singlets or a ttpair
In this article we have presented a novel approach, dubbed MiNNLOPS, to combine NNLO QCD calculations with parton showers for colour-singlet production at the LHC
Summary
We describe the procedure to perform a consistent matching of a NNLO QCD calculation for the production of a heavy colour-singlet system to a fully exclusive parton-shower simulation. We start by recalling the necessary elements of the MiNLO method in section 2.1 and 2.2, while in section 2.3 we derive the additional terms necessary to achieve NNLO accuracy
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