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Francesco Giuli

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Preprint Sep 2026

Resummation-scale uncertainties in PDF determinations

We investigate the impact of resummation-scale variations on parton distribution function (PDF) determinations. These variations introduce an additional source of theoretical uncertainty related to the evolution of PDFs and strong coupling $\alpha_s$ that has never previously been accounted for in PDF fits. Using the o...

H. Abdolmaleki, Valerio Bertone, G. Bozzi et al. · 0 citations
Preprint Sep 2026

Resummation-scale effects in DIS PDF fits with xFitter

Renormalisation-group evolution enters PDF determinations through the running coupling and the splitting functions. At fixed perturbative order, the solution of the evolution equations is not unique beyond the nominal accuracy, and this residual freedom can be probed through resummation-scale variations. This contribut...

Francesco Giuli · 0 citations

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