论文标题
潜在的非顾问QCD的$ s $ - $ wave quarkonia的生产和两极分化
Production and polarization of $S$-wave quarkonia in potential nonrelativistic QCD
论文作者
论文摘要
基于潜在的非同性QCD形式主义，我们计算了非递归QCD长距离矩阵元素（LDMES），用于纳入$ S $ - 波重量Quarkonia。这大大减少了非扰动未知数的数量，并带来了非依赖性QCD分解形式主义的预测能力的实质性增强。我们获得了改进的LDMES的确定，并找到$ j/ψ$，$ψ（2s）$的横截面和极性化，以及与LHC数据非常吻合的激动$υ$状态。我们的结果可能对固定大量的夸克生产机制具有重要意义。
Based on the potential nonrelativistic QCD formalism, we compute the nonrelativistic QCD long-distance matrix elements (LDMEs) for inclusive production of $S$-wave heavy quarkonia. This greatly reduces the number of nonperturbative unknowns and brings in a substantial enhancement in the predictive power of the nonrelativistic QCD factorization formalism. We obtain improved determinations of the LDMEs and find cross sections and polarizations of $J/ψ$, $ψ(2S)$, and excited $Υ$ states that agree well with LHC data. Our results may have important implications in pinning down the heavy quarkonium production mechanism.
