出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The highly-improved staggered quark (HISQ) action is the most accurate discretization scheme to
date for the charm quark. Here we report on the progress of perturbative matching for the quark
mass using the HISQ action. The matching is done through O(a2
s ) using a combination of Monte
Carlo simulations at weak coupling and diagrammatic perturbation theory. When combined with
on-going simulation efforts using the HISQ action, a determination of the charm quark mass to a
few percent accuracy can be achieved. Of particular interest will be a comparison with the recent
sum rule determination of the charm mass due to Kühn et al. [1].
