NNLO constraints on proton PDFs from the SeaQuest and STAR experiments and other developments in the CTEQ-TEA global analysis
Marco Guzzi, T. J. Hobbs, Tie-Jiun Hou, Xiaoxian Jing, Keping Xie, Aurore Courtoy, Sayipjamal Dulat, Jun Gao, Joey Huston, Pavel M. Nadolsky, Carl Schmidt, Ibrahim Sitiwaldi, Mengshi Yan, C.-P. Yuan
SciPost Phys. Proc. 8, 005 (2022) · published 11 July 2022
- doi: 10.21468/SciPostPhysProc.8.005
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Proceedings event
28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects
Abstract
We review progress in the global QCD analysis by the CTEQ-TEA group since the publication of CT18 parton distribution functions (PDFs) in the proton. Specifically, we discuss comparisons of CT18 NNLO predictions with the LHC 13 TeV measurements as well as with the FNAL SeaQuest and BNL STAR data on lepton pair production. The specialized CT18X PDFs approximating saturation effects are compared with the CT18sx PDFs obtained using NLL/NLO small-x resummation. Short summaries are presented for the special CT18 parton distributions with fitted charm and with lattice QCD inputs. A recent comparative analysis of the impact of deuteron nuclear effects on the parton distributions by the CTEQ-JLab and CTEQ-TEA groups is summarized.
Cited by 6
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Marco Guzzi,
- 2 3 Timothy Hobbs,
- 4 Tie-Jiun Hou,
- 5 Xiaoxian Jing,
- 6 Keping Xie,
- 7 Aurore Courtoy,
- 8 Sayipjamal Dulat,
- 9 Jun Gao,
- 10 Joey Huston,
- 5 Pavel Nadolsky,
- 10 Carl Schmidt,
- 8 Ibrahim Sitiwaldi,
- 11 Mengshi Yan,
- 10 Chien-Peng Yuan
- 1 Kennesaw State University [KSU]
- 2 Illinois Institute of Technology [IIT]
- 3 Fermi National Accelerator Laboratory [Fermilab]
- 4 Northeastern University [NEU]
- 5 Southern Methodist University [SMU]
- 6 University of Pittsburgh
- 7 Universidad Nacional Autónoma de México / National Autonomous University of Mexico [UNAM]
- 8 新疆大学 / Xinjiang University
- 9 上海交通大学 / Shanghai Jiao Tong University [SJTU]
- 10 Michigan State University [MSU]
- 11 北京大学 / Peking University [PKU]