Extraction of kaon partonic distribution functions from Drell-Yan and J/ψ production data
We present an analysis to extract kaon parton distribution functions (PDFs) 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 exten...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-01-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323007281 |
| Summary: | We present an analysis to extract kaon parton distribution functions (PDFs) 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/ψ production data. These data are well described by the statistical model, allowing an extraction of the kaon PDFs. We find that both the Drell-Yan and the J/ψ 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/ψ production data. In particular, the momentum fraction carried by gluons is found to be similar for pion and kaon. |
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| ISSN: | 0370-2693 |