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arXiv · 2209.15277

Implications of exclusive $J/\psi$ photoproduction in a tamed collinear factorisation approach to NLO

Chris A. Flett·Alan D. Martin·Misha G. Ryskin·Thomas Teubner
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Abstract

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.

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Chris A. Flett, Alan D. Martin, Misha G. Ryskin, Thomas Teubner. 2022-09-30. Implications of exclusive $J/\psi$ photoproduction in a tamed collinear factorisation approach to NLO. https://arxiv.org/abs/2209.15277

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