A4 Article in conference proceedings
Constraints for nuclear PDFs from the LHCb D-meson data (2019)

Paukkunen, H., Eskola, K., Helenius, I., & Paakkinen, P. (2019). Constraints for nuclear PDFs from the LHCb D-meson data. In DIS 2019 : Proceedings of the XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (Article 026). Sissa. POS Proceedings of Science, 352. https://doi.org/10.22323/1.352.0026

JYU authors or editors

Publication details

All authors or editors: Paukkunen, H.; Eskola, K.; Helenius, I.; Paakkinen, P.

Parent publication: DIS 2019 : Proceedings of the XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects

Place and date of conference: Torino, Italy, 8.-12.4.2019

Journal or series: POS Proceedings of Science

eISSN: 1824-8039

Publication year: 2019

Number in series: 352

Article number: 026

Publisher: Sissa

Publication country: Italy

Publication language: English

DOI: https://doi.org/10.22323/1.352.0026

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67013

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1906.03943

Abstract

We quantify the impact of LHCb D-meson measurements at s√=5TeV on the EPPS16 and nCTEQ15 nuclear PDFs. In our study, the theoretical description of D-meson production is based on the recently developed SACOT-mT variant of the general-mass variable-flavour-number formalism, and the impact on PDFs is estimated via reweighting methods. We pay special attention on the theoretical uncertainties known to us, and are led to exclude the pT<3GeV region from our main analysis. The LHCb data can be accommodated well within EPPS16 and nCTEQ15, and the data provide stringent constraints on the gluons in the shadowing/antishadowing regions. No evidence of non-linear effects beyond standard DGLAP evolution is found even if the full kinematic region down to zero pT is considered.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2019

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