📝 SummarXiv

Abstract

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.