The MSR mass and the O(ΛQCD) renormalon sum rule

This is the authors' abstract. We don't add key points for this paper.

We provide a detailed description and analysis of a low-scale short-distance mass scheme, called the MSR mass, that is useful for high-precision top quark mass determinations, but can be applied for any heavy quarkQ. In contrast to earlier low-scale short-distance mass schemes, the MSR scheme has a direct connection to the well known MS̄ MS¯ mass commonly used for high-energy applications, and is determined by heavy quark on-shell self-energy Feynman diagrams. Indeed, the MSR mass scheme can be viewed as the simplest extension of the MS̄ MS¯ mass concept to renormalization scales ≪mQ. The MSR mass depends on a scaleRthat can be chosen freely, and its renormalization group evolution has a linear dependence onR, which is known as R-evolution. Using R-evolution for the MSR mass we provide details of the derivation of an analytic expression for the normalization of the O(QCD) OΛQCD renormalon asymptotic behavior of the pole mass in perturbation theory. This is referred to as the O(QCD) OΛQCD renormalon sum rule, and can be applied to any perturbative series. The relations of the MSR mass scheme to other low-scale short-distance masses are analyzed as well.