标题： 胶子辐射效应下强子碰撞中的全魅夸克四夸克态产生 显示英文标题

标题： Fully charm tetraquark production at hadronic collisions with gluon radiation effects

摘要： 我们完成了对全魅夸克四夸克态的首次完整的次领头阶QCD计算。 通过重新求和各种胶子辐射效应，我们将它们的强子产生截面精度提高到了${\cal O}(\alpha_s^5)$的量级。 通过对称性分析，我们研究了全魅夸克四夸克态可能的夸克构型，并在其颜色对称-反对称基下扩展了它的状态。 通过结合LHCb对奇异强子X(6900)总产生截面的数据和CMS对其自旋宇称的测量，我们提取了非微扰但普遍的长程距离矩阵元。 最后，预测了快速度和横向动量分布，这些结果有待进一步的实验验证。 显示英文摘要

摘要： We have completed the first complete next-to-leading order QCD calculation for the fully charm tetraquark state. By resumming over various gluon radiation effects, we have improved the precision of their hadroproduction cross-section to the order of ${\cal O}(\alpha_s^5)$. Through symmetry analysis, we investigated the possible quark configurations of the fully charm tetraquark and expanded its states in the color symmetry-antisymmetry basis. By combining LHCb data on the total cross section of the exotic hadron X(6900) and CMS measurements of its spin-parity, we extracted the non-perturbative but universal long-distance matrix elements. In the end, the rapidity and transverse momentum distributions are predicted, which await further experimental verification.