Nuclear Physics B ( IF 2.8 ) Pub Date : 2021-06-16 , DOI: 10.1016/j.nuclphysb.2021.115466 Xu-Dong Huang , Xing-Gang Wu , Qing Yu , Xu-Chang Zheng , Jun Zeng
In the paper, we analyze the properties of Gross-Llewellyn Smith (GLS) sum rule by using the -order QCD corrections with the help of principle of maximum conformality (PMC). By using the PMC single-scale approach, we obtain an accurate renormalization scale-and-scheme independent fixed-order pQCD contribution for GLS sum rule, e.g. , where the error is squared average of those from , the predicted -order terms predicted by using the Padé approximation approach. After applying the PMC, a more convergent pQCD series has been obtained, and the contributions from the unknown higher-order terms are highly suppressed. In combination with the nonperturbative high-twist contribution, our final prediction of GLS sum rule agrees well with the experimental data given by the CCFR collaboration.
中文翻译:
Gross-Llewellyn Smith 总和规则高达 - 阶 QCD 修正
在本文中,我们通过使用以下公式来分析 Gross-Llewellyn Smith (GLS) 求和规则的性质 借助最大保形原则 (PMC) 进行 - 阶 QCD 校正。通过使用 PMC 单尺度方法,我们为 GLS 求和规则获得了精确的重整化尺度和方案独立的固定阶 pQCD 贡献,例如,其中误差是来自 , 预测 使用 Padé 近似方法预测的阶项。应用PMC后,得到了更收敛的pQCD级数,高度抑制了未知高阶项的贡献。结合非微扰高扭曲贡献,我们对 GLS 总和规则的最终预测与 CCFR 合作提供的实验数据非常吻合。