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Article Dans Une Revue AAPPS Bulletin Année : 2023

Pion PDFs confronted by fixed-target charmonium production

Wen-Chen Chang
  • Fonction : Auteur
Chia-Yu Hsieh
  • Fonction : Auteur
Yu-Shiang Lian
  • Fonction : Auteur
Jen-Chieh Peng
  • Fonction : Auteur
Takahiro Sawada
  • Fonction : Auteur

Résumé

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.

Dates et versions

hal-04155081 , version 1 (07-07-2023)

Identifiants

Citer

Wen-Chen Chang, Chia-Yu Hsieh, Yu-Shiang Lian, Jen-Chieh Peng, Stephane Platchkov, et al.. Pion PDFs confronted by fixed-target charmonium production. AAPPS Bulletin, 2023, 33 (1), pp.15. ⟨10.1007/s43673-023-00085-4⟩. ⟨hal-04155081⟩
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