Volume 512 -
XXXII International Workshop on Deep Inelastic Scattering and Related Subjects
(DIS2025) -
WG1: Structure Functions and Parton Densities
Status of ABMP16/ABMPtt/ABMPgam PDF fits
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Pre-published on:
December 15, 2025
Published on:
January 28, 2026
Abstract
We study the impact of state-of-the-art top-quark data collected at the Large Hadron Collider (LHC) on proton parton distribution functions (PDFs) using the ABMP16 methodology. The gluon PDF at large x and the top-quark mass value derived from these data are well compatible with the previous ABMP16 results, but with significantly reduced uncertainties by up to a factor of two. We discuss the compatibility of different datasets and the compatibility of the fitted PDFs with other modern global PDF sets.
DOI: https://doi.org/10.22323/1.512.0023
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.