arXiv:1909.00001·v1·High Energy Physics — Phenomenology
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🇺🇸
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.
Comments: 6 pages, 2 figures; in Proceedings of the XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019), 8-12 April, 2019, Torino, Italy