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Article Dans Une Revue Phys.Lett.B Année : 2024

First Extraction of Kaon Partonic Distribution Functions from Drell-Yan and $J/\psi$ Production Data

Franco Buccella
  • Fonction : Auteur
Wen-Chen Chang
  • Fonction : Auteur
Jen-Chieh Peng
  • Fonction : Auteur

Résumé

We present an analysis to extract kaon parton distribution functions (PDFs) for the first time using meson-induced Drell-Yan and quarkonium production data. Starting from the statistical model first developed for determining the partonic structure of spin-1/2 nucleon and later applied to the spin-0 pion, we have extended this approach to perform a global fit to existing kaon-induced Drell-Yan and $J/\psi$ production data. These data are well described by the statistical model, allowing a first extraction of the kaon PDFs. We find that both the Drell-Yan and the $J/\psi$ data favor a harder valence distribution for strange quark than for up quark in kaon. The kaon gluon distribution is further constrained by the $J/\psi$ production data. In particular, the momentum fraction carried by gluons is found to be similar for pion and kaon.

Dates et versions

hal-04126241 , version 1 (13-06-2023)

Identifiants

Citer

Claude Bourrely, Franco Buccella, Wen-Chen Chang, Jen-Chieh Peng. First Extraction of Kaon Partonic Distribution Functions from Drell-Yan and $J/\psi$ Production Data. Phys.Lett.B, 2024, 848, pp.138395. ⟨10.1016/j.physletb.2023.138395⟩. ⟨hal-04126241⟩
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