NRQCD Re-Confronts LHCb Data on Quarkonium Production within Jets
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| Format: | Preprint |
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2025
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| _version_ | 1866918104254119936 |
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| author | Wang, Yunlu Kang, Daekyoung Chung, Hee Sok |
| author_facet | Wang, Yunlu Kang, Daekyoung Chung, Hee Sok |
| contents | We compare LHCb measurements of $J/ψ$ and $ψ(2S)$ transverse momentum distributions within jets with QCD calculations, which may be crucial in understanding the quarkonium production mechanism. Our theoretical calculations are based on the fragmenting jet function formalism, while the nonperturbative formation of quarkonia is described by the nonrelativistic QCD factorization formalism. We include the newest refinements in the perturbative calculation including resummation of threshold and DGLAP logarithms. We find that the $ψ(2S)$ data has the potential to discriminate between the different production mechanisms proposed in the literature. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_19022 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NRQCD Re-Confronts LHCb Data on Quarkonium Production within Jets Wang, Yunlu Kang, Daekyoung Chung, Hee Sok High Energy Physics - Phenomenology We compare LHCb measurements of $J/ψ$ and $ψ(2S)$ transverse momentum distributions within jets with QCD calculations, which may be crucial in understanding the quarkonium production mechanism. Our theoretical calculations are based on the fragmenting jet function formalism, while the nonperturbative formation of quarkonia is described by the nonrelativistic QCD factorization formalism. We include the newest refinements in the perturbative calculation including resummation of threshold and DGLAP logarithms. We find that the $ψ(2S)$ data has the potential to discriminate between the different production mechanisms proposed in the literature. |
| title | NRQCD Re-Confronts LHCb Data on Quarkonium Production within Jets |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2507.19022 |