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arXiv · 2302.12844

NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region

R. Gauld·A. Gehrmann-De Ridder·E. W. N. Glover·A. Huss·A. Rodriguez Garcia·G. Stagnitto
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Abstract

We compute next-to-next-to-leading order (NNLO) QCD corrections to neutral vector boson production in association with a charm jet at the LHC. This process is studied in the forward kinematics at $\sqrt{s}=13$ TeV, which may provide valuable constraints on the intrinsic charm component of the proton. A comparison is performed between fixed order and NLO predictions matched to a parton shower showing mutual compatibility within the respective uncertainties. NNLO corrections typically lead to a reduction of theoretical uncertainties by a factor of two and the perturbative convergence is further improved through the introduction of a theory-inspired constraint on the transverse momentum of the vector boson plus jet system. A comparison between these predictions with data will require an alignment of a flavour-tagging procedure in theory and experiment that is infrared and collinear safe.

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R. Gauld, A. Gehrmann-De Ridder, E. W. N. Glover, A. Huss, A. Rodriguez Garcia, G. Stagnitto. 2023-02-24. NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region. https://doi.org/10.1140/epjc/s10052-023-11530-x

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