Abstract
In view of the recent experimental results at CERN, we calculate exactly theQ 2-dependence of the inelastic leptoproduction cross-section ofJ/Ψ. We also make predictions for the high enegy (HERA) as well as low energy (30 GeV electron beam on a fixed target) regimes. The exact calculation of theQ 2-dependence of the cross-section is essential to extract the gluon distribution function from data. We find that using the exact leptoproduction cross-section amounts to increase the power in the parametrization of the gluon distribution function extracted so far in muoproduction experiments
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Merabet, H., Mathiot, J.F. & Mendez-Galain, R. Inelastic leptoproduction ofJ/Ψ and the gluon distribution in the nucleon. Z. Phys. C - Particles and Fields 62, 639–647 (1994). https://doi.org/10.1007/BF01574167
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DOI: https://doi.org/10.1007/BF01574167