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- W2949528148 abstract "Based on a perturbative theory of quantum chromodynamics and non-relativistic quark model, associated $J/psi$ plus open charm photoproduction on charm quarks in a proton via partonic subprocess $gamma cto J/psi c$ is discussed. It is shown that the value and energy dependence of the cross section for such process remarkably depends on the choice of charm distribution function in a proton. In the region of small $z=E_J/E_{gamma}<0.2$ the contribution of the $gamma cto J/psi c$ subprocess in the inelastic $J/psi$ photoproduction spectra is larger than the contribution of the photon-gluon fusion subprocess. At the energy range of HERA collider intrinsic charm contribution in the total inclusive $J/psi$ photoproduction cross section may be equal to 4% of the dominant contribution of photon-gluon fusion mechanism." @default.
- W2949528148 created "2019-06-27" @default.
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- W2949528148 date "1994-04-20" @default.
- W2949528148 modified "2023-10-16" @default.
- W2949528148 title "INTRINSIC CHARM IN PROTON AND J/ψ PHOTOPRODUCTION AT HIGH ENERGIES" @default.
- W2949528148 doi "https://doi.org/10.1142/s0217732394000903" @default.
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