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MiNNLO$_{PS}$: a new method to match NNLO QCD to parton showers

Authors :
Emanuele Re
Marius Wiesemann
Paolo Nason
Pier Francesco Monni
Giulia Zanderighi
Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH)
Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)
Monni, P
Nason, P
Re, E
Wiesemann, M
Zanderighi, G
Source :
Journal of High Energy Physics, Journal of High Energy Physics, Springer, 2020, 05, pp.143. ⟨10.1007/JHEP05(2020)143⟩, JHEP, JHEP, 2020, 05, pp.143. ⟨10.1007/JHEP05(2020)143⟩, Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-45 (2020)
Publication Year :
2020
Publisher :
HAL CCSD, 2020.

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 $t\bar{t}$ pair. The NNLO corrections are included by connecting the MiNLO$^\prime$ 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.<br />Comment: Fixed sign typo in Eq. (4.24)

Details

Language :
English
ISSN :
11266708 and 10298479
Database :
OpenAIRE
Journal :
Journal of High Energy Physics, Journal of High Energy Physics, Springer, 2020, 05, pp.143. ⟨10.1007/JHEP05(2020)143⟩, JHEP, JHEP, 2020, 05, pp.143. ⟨10.1007/JHEP05(2020)143⟩, Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-45 (2020)
Accession number :
edsair.doi.dedup.....4f12f1bfe48358ff31fb4006827e2b82
Full Text :
https://doi.org/10.1007/JHEP05(2020)143⟩