Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-03-22
Eur.Phys.J.C11:673-683,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 9 figures
Scientific paper
10.1007/s100520050663
A next-to-leading order analysis of inelastic electroproduction of charm is performed using an interpolating scheme which maps smoothly onto massless QCD evolution at large Q^2 and photon-gluon fusion at small Q^2. In contrast with earlier analyses, this scheme allows the inclusion of quark and target mass effects and heavy quark thresholds, as well as possible non-perturbative, or intrinsic, charm contributions. We find no conclusive evidence in favor of an intrinsic charm component in the nucleon, although several data points which disagree with perturbative QCD expectations will need to be checked by future experiments.
Melnitchouk Wally
Steffens F. M.
Thomas Anthony W.
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