Implications of exclusive $J/\psi$ photoproduction in a tamed collinear factorisation approach to NLO
| Autor: | Flett, Chris A., Martin, Alan D., Ryskin, Misha G., Teubner, Thomas |
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| Rok vydání: | 2022 |
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| Druh dokumentu: | Working Paper |
| Popis: | We discuss exclusive $J/\psi$ photoproduction, initially in conventional collinear factorisation at NLO and then subsequently in a refined approach with a programme of low $x$ resummation and implementation of a crucial low $Q_0$ subtraction included. We compare and contrast predictions in both frameworks and remark about the possibility to constrain and ultimately determine the low $x$ and low scale gluon PDF, emphasising the significance of this for future global PDF analyses. Comment: 6 pages, 4 figures. Presented by C. Flett at the 51st International Symposium on Multiparticle Dynamics (ISMD2022) Pitlochry, Scottish Highlands, 1-5 August 2022 |
| Databáze: | arXiv |
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