Novel demonstration of the rgl of fixed-order predictions Jian-Min Sheng, XGW, SJB PRD2018 Introducing new coupling, whose scheme dependence is governed by a single- parameter C, and whose scale running equation is scheme-independent P4(k4marm上 m四出Mx动M区、 inimum.The dash-dot line represents the four-loop PMC prediction, and the darker shaded band is for A-#rgy the 20=8(a) he independence of the PMC prediction ou the parameter C demonstrates its scheme- independenc B1 apn dau dpn ac aa -B(ap)oPr FIG 8(color online)60(M2, C)for decay as a function of the parameter C. The solid line is the prediction using conventional 消除β-项,即消除方案C依赖 scale setting, the lighter-shaded band is the uncertainty lor a four-loop prediction A-+ a/f, )a MAX IM.AM. ).When x prediction on the parameter C demostra, and the darker shaded band is for A-tlrapaQ I. The independence of the PMCNovel demonstration of the RGI of fixed-order predictions Jian-Min Sheng, XGW, SJB PRD2018 Introducing new coupling, whose scheme dependence is governed by a single￾parameter C, and whose scale running equation is scheme-independent 消除-项，即消除方案C依赖