标题： 内在魅夸克对高能下$J/ψ$加开魅夸克联合产生的贡献 显示英文标题

标题： Intrinsic Charm Contribution to $J/ψ$ Plus Open Charm Associated Production at High Energies

摘要： 我们给出了在高能强子碰撞中，大横向动量下$J/\psi$加上开放奇夸克相关产生过程中内在奇夸克贡献的计算结果。 结果显示，该过程的截面值及其能量依赖性在很大程度上由奇夸克分布函数的选择决定。 我们发现，内在奇夸克对包含性$J/\psi$强子产生贡献约为所有机制总贡献的1%。 显示英文摘要

摘要： We present the results of a calculation of the intrinsic charm quark contribution to $J/\psi$ plus open charm associated production at large transverse momentum in hadron collisions at high energies. It is shown that the value of the cross section for such process and its energy dependence are significantly determined by the choice of charm quark distribution function. We find that intrinsic charm contribution to inclusive $J/\psi$ hadroproduction is about 1\% of the total contribution of all mechanisms.