发表机构
Nanjing Normal University（南京师范大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究全粲四夸克轻强子衰变的NLO QCD修正，基于NRQCD框架解析短程系数，发现修正显著，给出的理论预言可为相关实验研究提供参考。
AI 中文摘要
我们在非相对论量子色动力学（NRQCD）因子化框架下，计算全粲四夸克的轻强子衰变的次领头阶（NLO）QCD修正，解析得到全粲四夸克到$gg$和$q\bar{q}$末态的短程系数。结果显示NLO修正显著，使$0^{++}$态的领头阶（LO）预言改变约170%，$2^{++}$态改变约30%；所得$\mathcal{R}_{\mathrm{LH}}$值为$10^{-5}$至$10^{-4}$ MeV量级，比双光子道大三个数量级，符合强作用衰变预期。本结果为未来全粲四夸克衰变的实验研究提供了更新的理论预言。
英文摘要
We compute the next-to-leading order (NLO) QCD corrections to the light hadron decays of fully charm tetraquarks within the nonrelativistic QCD (NRQCD) factorization framework. The short-distance coefficients for the $gg$ and $q\bar{q}$ final states from fully charm tetraquarks are obtained analytically. The NLO corrections are found to be significant, altering the LO predictions by about $170\%$ for the $0^{++}$ state and $30\%$ for the $2^{++}$ state. The resulting $\mathcal{R}_{\mathrm{LH}}$ values are of order $10^{-5}$ to $10^{-4}$ MeV, about three orders of magnitude larger than the diphoton channel, as expected for strong-interaction decays. Our results provide updated theoretical predictions for future experimental studies of fully charm tetraquark decays.
Comments17 pages, 3 figures
