论文标题
$ j/ψ$，$ψ（2s）$和$υ$ nate in pnrqccd的包含性生产
Inclusive production of $J/ψ$, $ψ(2S)$, and $Υ$ states in pNRQCD
论文作者
论文摘要
根据有关相关能量尺度层次结构的一些假设，我们计算了非率级QCD（NRQCD）长距离矩阵元素（LDMES），用于纳入$ j/ψ$，$ψ（2s）$和$υ$ state，以及基于潜在的NRQCD（PNRQCD）的生产。基于PNRQCD形式主义，我们根据原点和通用gluonic相关剂的夸克波函数获得了LDMES的表达，这不取决于浓重的夸克风味或径向激发。这大大减少了非扰动未知数的数量，并大大减少了非依赖性有效野外理论形式主义的预测能力。由于Gluonic相关器的通用性，我们可以改善对$ J/ψ$，$ψ（2s）$和$υ$状态的LDMES的确定，并在LHC上与测量值非常一致，并在横截面和极化方面获得极化的现象学结果。
Under some assumptions on the hierarchy of relevant energy scales, we compute the nonrelativistic QCD (NRQCD) long-distance matrix elements (LDMEs) for inclusive production of $J/ψ$, $ψ(2S)$, and $Υ$ states based on the potential NRQCD (pNRQCD) effective field theory. Based on the pNRQCD formalism, we obtain expressions for the LDMEs in terms of the quarkonium wavefunctions at the origin and universal gluonic correlators, which do not depend on the heavy quark flavor or the radial excitation. This greatly reduces the number of nonperturbative unknowns and substantially enhances the predictive power of the nonrelativistic effective field theory formalism. We obtain improved determinations of the LDMEs for $J/ψ$, $ψ(2S)$, and $Υ$ states thanks to the universality of the gluonic correlators, and obtain phenomenological results for cross sections and polarizations at large transverse momentum that agree well with measurements at the LHC.
