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

doi:10.1140/epjc/s10052-023-11530-x

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › Research › peer-review

15 Citations (Scopus)

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 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.

Original language	English
Article number	336
Pages (from-to)	1-13
Number of pages	13
Journal	Zeitschrift fur Physik C-Particles and Fields
Volume	83
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s10052-023-11530-x
Publication status	Published - 27 Apr 2023
Externally published	Yes

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

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 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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AU - Gehrmann-De Ridder, A

AU - Glover, E W N

AU - Huss, A

AU - Rodriguez Garcia, A

AU - Stagnitto, G

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

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