LHC and DIS experimental data in the CT18(Z) global QCD analysis
Tie-Jiun Hou, Keping Xie, Jun Gao, Sayipjamal Dulat, Marco Guzzi, T., J. Hobbs, Joey Huston, Pavel Nadolsky, Jon Pumplin, Carl Schmidt, Ibrahim, Sitiwaldi, Dan Stump, Bo-Ting Wang, C.-P. Yuan
TL;DR
This paper integrates LHC data into the CT18 global QCD analysis at NNLO, introduces new methodological approaches, reviews PDF behaviors, and presents four new PDF families for improved theoretical predictions.
Contribution
It introduces new methodological developments and four new PDF families in the CT18 analysis, enhancing the accuracy of QCD modeling with LHC data.
Findings
New PDF families CT18, A, X, Z are presented.
Behavior of PDFs with different factorization scales is analyzed.
Methodological improvements in global QCD fitting are discussed.
Abstract
We discuss implementation of the LHC experimental data sets in the new CT18 global analysis of quantum chromodynamics (QCD) at the next-to-next-leading order of the QCD coupling strength. New methodological developments in the fitting methodology are discussed. Behavior of the CT18 NNLO PDFs for the conventional and "saturation-inspired" factorization scales in deep-inelastic scattering is reviewed. Four new families of (N)NLO CTEQ-TEA PDFs are presented: CT18, A, X, and Z.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research