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PreprintCC BY 4.0HAL

NNLL fit of the transverse-momentum-dependent distribution of unpolarised gluons to LHCb data on J/ψ-pair production

  • Daniël Boer
  • Jelle Bor
  • Alice Colpani Serri
  • Miguel G Echevarria
  • Jean-Philippe Lansberg
  • Samuel F Romera
  • Pieter Taels
Open at sourcePDFDOICite

Abstract

We perform the first fit of the unpolarised gluon transverse-momentum-dependent distribution f1g up to next-to-next-to-leading-logarithmic accuracy to the double-differential distribution in the invariant mass and transverse momentum of the latest J/ψ-pair production LHCb data. We review previous attempts to describe the older J/ψ-pair LHCb data using f1g, and discuss two novel methodologies which allow us to account in the fit for both the perturbative and PDF uncertainties to construct f1g in the perturbative region. It turns out that the consideration of these uncertainties is crucial for a meaningful fit to such low-scale gluon-sensitive data.

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Cite

BibTeXRIS
BibTeX
@misc{boer2026nnll,
  title = {{NNLL fit of the transverse-momentum-dependent distribution of unpolarised gluons to LHCb data on $J/ψ$-pair production}},
  author = {Daniël Boer and Jelle Bor and Alice Colpani Serri and Miguel G Echevarria and Jean-Philippe Lansberg and Samuel F Romera and Pieter Taels},
  howpublished = {HAL},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.01000},
  eprint = {2609.01000},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05759093v1},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - NNLL fit of the transverse-momentum-dependent distribution of unpolarised gluons to LHCb data on J/ψ-pair production
AU  - Daniël Boer
AU  - Jelle Bor
AU  - Alice Colpani Serri
AU  - Miguel G Echevarria
AU  - Jean-Philippe Lansberg
AU  - Samuel F Romera
AU  - Pieter Taels
PY  - 2026
DA  - 2026/09/01
PB  - HAL
DO  - 10.48550/arxiv.2609.01000
UR  - https://hal.science/hal-05759093v1
AB  - We perform the first fit of the unpolarised gluon transverse-momentum-dependent distribution f_1^g up to next-to-next-to-leading-logarithmic accuracy to the double-differential distribution in the invariant mass and transverse momentum of the latest J/ψ-pair production LHCb data. We review previous attempts to describe the older J/ψ-pair LHCb data using f_1^g, and discuss two novel methodologies which allow us to account in the fit for both the perturbative and PDF uncertainties to construct f_1^g in the perturbative region. It turns out that the consideration of these uncertainties is crucial for a meaningful fit to such low-scale gluon-sensitive data.
ER  -