Implications of exclusive $J/\psi$ photoproduction in a tamed collinear factorisation approach to NLO
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 fram...
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Zusammenfassung: | 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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DOI: | 10.48550/arxiv.2209.15277 |