Charm in the Nucleon
高能物理 - 唯象学
2010-03-26 v1 高能物理 - 实验
核理论
摘要
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.
引用
@article{arxiv.hep-ph/9903441,
title = {Charm in the Nucleon},
author = {F. M. Steffens and W. Melnitchouk and A. W. Thomas},
journal= {arXiv preprint arXiv:hep-ph/9903441},
year = {2010}
}
备注
23 pages, 9 figures