New results in the CTEQ-TEA global analysis of parton distributions in the nucleon
| Autor: | Ablat, A., Courtoy, A., Dulat, S., Guzzi, M., Hobbs, T. J., Hou, T. -J., Huston, J., Mohan, K., Lin, H. -W., Nadolsky, P., Sitiwaldi, I., Xie, K., Yan, M., Yuan, C. -P. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | 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. Comment: 38 pages, 19 figures |
| Databáze: | arXiv |
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