Parton distributions confront LHC Run II data: a quantitative appraisal
Abstract
We present a systematic comparison of theoretical predictions and various high-precision experimental measurements, specifically of differential cross sections performed by the LHC run II for Drell-Yan gauge boson, top-quark pair, single-inclusive jet and di-jet production, and by HERA for single-inclusive jet and di-jet production. Theoretical predictions are computed at next-to-next-to-leading order (NNLO) accuracy in perturbative Quantum Chromodynamics. The most widely employed sets of Parton Distribution Functions (PDFs) are used, and PDF, strong coupling, and missing higher order uncertainties are taken into account. We quantitatively assess the predictive power of each PDF set and the contribution of the different sources of experimental and theoretical uncertainty to the agreement between data and predictions. We show that control over all of these aspects is crucial to precision physics studies, such as the determination of Standard Model parameters at the LHC.
Cite
@article{arxiv.2501.10359,
title = {Parton distributions confront LHC Run II data: a quantitative appraisal},
author = {Amedeo Chiefa and Mark N. Costantini and Juan Cruz-Martinez and Emanuele R. Nocera and Tanjona R. Rabemananjara and Juan Rojo and Tanishq Sharma and Roy Stegeman and Maria Ubiali},
journal= {arXiv preprint arXiv:2501.10359},
year = {2025}
}
Comments
51 pages, 28 figures