Abstract
The ηc meson leptoproduction is calculated within the nonrelativistic QCD framework for the first time. It is found that the colour-singlet channel, although suppressed by a factor of αs relative to the colour-octet ones, provides important contribution for almost all the experimental conditions, which disagrees with some of the expectations before computation. We present the differential cross sections with respect to \( {p}_t^2 \), \( {p}_t^{\bigstar 2} \), Q2, W, and z, for both HERA and EIC experimental conditions as a reference for future studies. The scale dependence and long-distance-matrix-element dependence are also investigated in this paper.
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Zhang, HF., Mo, XM. Kinematic distributions of the ηc leptoproduction in association with light hadrons. J. High Energ. Phys. 2021, 168 (2021). https://doi.org/10.1007/JHEP12(2021)168
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DOI: https://doi.org/10.1007/JHEP12(2021)168