Abstract
We determine the charm-quark mass mc(mc) in the MS¯ scheme using measurements of charm production in deep-inelastic ep scattering at HERA in the kinematic range of photon virtuality 5 GeV2<Q2<1000 GeV2 and Bjorken scaling variable 10−5<x<10−1. The extraction of mc from this process with space-like kinematics provides complementary information to results from hadronic processes. The QCD analysis of the HERA data yields a value of mc(mc)=1.27±0.05(exp)−0.01+0.06(scale) GeV at next-to-leading order and of mc(mc)=1.36±0.04(exp)−0.00+0.04(scale)±0.1(theory) GeV at approximate next-to-next-to-leading order. The results are consistent with and of comparable precision as the world average.
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