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.

Gauld, R., Gehrmann-De Ridder, A., Glover, E., Huss, A., Rodriguez Garcia, A., Stagnitto, G. (2023). NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(4) [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

Stagnitto, G
2023

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.
Articolo in rivista - Articolo scientifico
High Energy Physics - Phenomenology; High Energy Physics - Experiment
English
27-apr-2023
2023
83
4
336
open
Gauld, R., Gehrmann-De Ridder, A., Glover, E., Huss, A., Rodriguez Garcia, A., Stagnitto, G. (2023). NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(4) [10.1140/epjc/s10052-023-11530-x].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/442618
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