https://doi.org/10.1140/epjp/s13360-024-05865-x
Regular Article
New results in the CTEQ-TEA global analysis of parton distributions in the nucleon
1
Xinjiang University, 830046, Urumqi, Xinjiang, China
2
IF UNAM, Apartado Postal 20-364, 01000, Ciudad de México, Mexico
3
Kennesaw State University, 30144, Kennesaw, GA, USA
4
Argonne National Laboratory, 60439, Argonne, IL, USA
5
University of South China, 421001, Hengyang, Hunan, China
6
Michigan State University, 48824, East Lansing, MI, USA
7
Southern Methodist University, 75275-0181, Dallas, TX, USA
8
Peking University, 100871, Beijing, China
Received:
16
August
2024
Accepted:
17
November
2024
Published online:
4
December
2024
This report summarizes the latest developments in the CTEQ-TEA global analysis of parton distribution functions (PDFs) in the nucleon. The focus is on recent NNLO fits to high-precision LHC data at 8 and 13 TeV, including Drell–Yan, jet, and top-quark pair production, pursued on the way toward the release of the new generation of CTEQ-TEA general-purpose PDFs. The report also discusses advancements in statistical and numerical methods for PDF determination and uncertainty quantification, highlighting the importance of robust and replicable uncertainties for high-stakes observables. Additionally, it covers phenomenological studies related to PDF determination, such as the interplay of experimental constraints, exploration of correlations between high-x nucleon sea and low-energy parity-violating measurements, fitted charm in the nucleon, the photon PDF in the neutron, and simultaneous SMEFT-PDF analyses.
© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2024
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