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A Contribution of Photon Hadronic Component in the Leptoproduction Charmed Structure Function at Large x and Q^2

D. Yu. Golubkov·Yu. A. Golubkov
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Abstract

We calculated the contribution of the photon hadronic component in the charmed structure function of the leptoproduction. The contribution comes from scattering of the c quarks of the virtual photon on the quarks and gluons of the proton. Comparison of our calculations with the measurements of the charm production in $μ^+p$-scattering by EMC shows, that contribution of resolved photon can explain the excess of EMC data over the predictions of the photon-gluon fusion model at large momentum transfers. Thus, one does not need to use a non-perturbative admixture of the charmed quarks in the proton wave function (''intrinsic charm'') to describe such an excess in EMC data.

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D. Yu. Golubkov, Yu. A. Golubkov. 2002-09-06. A Contribution of Photon Hadronic Component in the Leptoproduction Charmed Structure Function at Large x and Q^2. https://arxiv.org/abs/hep-ph/0106284

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