Impact of heavy-quark production measurements in the CT18 global QCD analysis of PDFs
Marco Guzzi, Pavel Nadolsky, and Keping Xie
TL;DR
This paper evaluates how recent heavy-flavor production data from HERA influences the determination of parton distribution functions, especially the gluon distribution, within the CT18 global QCD analysis.
Contribution
It introduces an analysis of the impact of recent charm and bottom production measurements on the CT18 PDFs, highlighting their role in constraining the gluon distribution.
Findings
Heavy-flavor data significantly constrains the gluon PDF.
Inclusion of new measurements improves the fit quality.
Interplay between heavy-flavor data and existing datasets enhances PDF accuracy.
Abstract
We discuss the impact of heavy-flavor production measurements in semi-inclusive deep inelastic scattering at HERA on the CTEQ-TEA PDFs. In particular, we study the impact of the latest charm and bottom production measurements from the H1 and ZEUS collaborations on the gluon, and the interplay of these measurements with the data ensemble of the recent CT18 global QCD analysis.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions