Open charm production at HERA
摘要
Inclusive charm meson production cross sections in the deep inelastic scattering and photoproduction regimes are compared with QCD leading and next-to-leading (NLO) calculations. The NLO predictions are significantly below the data in some parts of the measured kinematic range. Angular distributions of dijet events with charm show clear evidence for the existence of charm originating from the incoming photon. The charm fragmentation function is measured for the first time at HERA. Various fragmentation ratios and the fragmentation fractions of the low-lying charm hadrons are determined and compared to previous e+e- results.
关键词
引用
@article{arxiv.hep-ex/0307007,
title = {Open charm production at HERA},
author = {Uri Karshon},
journal= {arXiv preprint arXiv:hep-ex/0307007},
year = {2019}
}
备注
6 pages, 7 figures, to appear in the proceedings of the International Conference on the Structure and Interactions of the Photon, Frascati (Italy), 7-11 April 2003