Pion PDFs confronted by Fixed-Target Charmonium Production
| Autor: | Chang, Wen-Chen, Hsieh, Chia-Yu, Lian, Yu-Shiang, Peng, Jen-Chieh, Platchkov, Stephane, Sawada, Takahiro |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | AAPPS Bulletin volume 33, Article number: 15 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s43673-023-00085-4 |
| Popis: | The pion, as the Goldstone boson of the strong interaction, is the lightest QCD bound state and responsible for the long-range nucleon-nucleon interaction inside the nucleus. Our knowledge on the pion partonic structure is limited by the existing Drell-Yan data which are primarily sensitive to the pion valence-quark distributions. The recent progress of global analysis of pion's parton distribution functions (PDFs) utilizing various experimental approaches are introduced. From comparisons between the pion-induced $J/\psi$ and $\psi(2S)$ production data with theoretical calculations using the CEM and NRQCD models, we show how these charmonium production data could provide useful constraints on the pion PDFs. Comment: 17 pages, 6 figures; invited review. arXiv admin note: text overlap with arXiv:2006.06947, arXiv:2209.04072 |
| Databáze: | arXiv |
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