We present an indirect determination of the top-quark pole mass mt within a global analysis of parton distribution functions (PDFs), based on the public NNPDF framework. We consider a wide range of measurements, including both single- and double-differential observables, computed at NNLO QCD accuracy with EW corrections, and analyse their individual as well as combined impact on the joint (αs,mt) parameter space, while accounting for PDF evolution up to approximate N3LO QCD accuracy with QED corrections. We account for missing higher order QCD uncertainties by default. Unique to our analysis are the inclusion of, first, toponium contributions around the ttˉ threshold, second, state-of-the-art constraints on αs from the lattice, and finally, a detailed sensitivity study of the various ATLAS and CMS differential cross-section measurements at 8 and 13 TeV. We demonstrate explicitly how a combined determination requires the refitting of the PDFs in order to correctly correlate uncertainties. We find mt=172.80±0.26 GeV at approximate N3LO QCD including NLO QED, EW and toponium corrections.
@article{arxiv.2603.28865,
title = {A Determination of the Top Mass from a Global PDF Analysis},
author = {Richard D. Ball and Jaco ter Hoeve and Roy Stegeman},
journal= {arXiv preprint arXiv:2603.28865},
year = {2026}
}