Title: Next-to-leading-logarithmic power corrections for $N$-jettiness subtraction in color-singlet production Show Chinese title

Title: 下一阶对数功率修正用于色单态产生中的$N$-jettiness减法

Abstract: We present a detailed derivation of the power corrections to the factorization theorem for the 0-jettiness event shape variable $\mathcal{T}$. Our calculation is performed directly in QCD without using the formalism of effective field theory. We analytically calculate the next-to-leading logarithmic power corrections for small $\mathcal{T}$ at next-to-leading order in the strong coupling constant, extending previous computations which obtained only the leading-logarithmic power corrections. We address a discrepancy in the literature between results for the leading-logarithmic power corrections to a particular definition of 0-jettiness. We present a numerical study of the power corrections in the context of their application to the $N$-jettiness subtraction method for higher-order calculations, using gluon-fusion Higgs production as an example. The inclusion of the next-to-leading-logarithmic power corrections further improves the numerical efficiency of the approach beyond the improvement obtained from the leading-logarithmic power corrections. Show Chinese abstract

Abstract: 我们详细推导了0喷注性事件形状变量$\mathcal{T}$的因子化定理的功率修正。我们的计算直接在QCD中进行，没有使用有效场论的形式主义。我们解析计算了强耦合常数的次领头对数功率修正，针对小$\mathcal{T}$，在次领头阶，扩展了之前仅获得领头对数功率修正的计算。我们解决了文献中关于0喷注性特定定义的领头对数功率修正结果之间的差异。我们提出了一个数值研究，在其应用于更高阶计算的$N$喷注性减法方法的背景下，以胶子融合希格斯粒子产生为例。包括次领头对数功率修正进一步提高了该方法的数值效率，超过了从领头对数功率修正中获得的改进。