Abstract

New upper limits on the intrinsic-charm contribution to the proton are obtained on the basis of experimental data on the existence of pentaquarks involving a hidden charm. Possible distributions of heavy quarks within the proton are analyzed.

中文翻译：

---

质子和五夸克隐性内在魅力的假说

摘要

根据有关包含隐藏魅力的五夸克存在的实验数据，获得了对内在魅力对质子贡献的新上限。分析质子中重夸克的可能分布。