Paper
Charm and Bottom Quark Masses: an Update
Authors
Abstract
Using new four-loop results for the heavy quark vacuum polarization and new data for bottom quark production in electron-positron annihilation, an update on the determination of charm- and bottom-quark masses through sum rules has been performed. The previous result for the charm-quark mass, , based on the lowest moment, is supported by the new results from higher moments which lead to consistent values with comparable errors. The new value for the bottom quark, , corresponding to , makes use both of the new data and the new perturbative results and is consistent with the earlier determination.