Combined HERA data on charm production in deep-inelastic scattering have previously been used to determine the charm-quark running mass m(c)(mc) in the (MS) over bar renormalisation scheme. Here, the same data are used as a function of the photon virtuality Q(2) to evaluate the charm-quark running mass at different scales to one-loop order, in the context of a next-to-leading order QCD analysis. The scale dependence of the mass is found to be consistent with QCD expectations.
Running of the charm-quark mass from HERA deep-inelastic scattering data
Brugnera, R.;Carlin, R.;Garfagnini, A.;Longhin, A.;
2017
Abstract
Combined HERA data on charm production in deep-inelastic scattering have previously been used to determine the charm-quark running mass m(c)(mc) in the (MS) over bar renormalisation scheme. Here, the same data are used as a function of the photon virtuality Q(2) to evaluate the charm-quark running mass at different scales to one-loop order, in the context of a next-to-leading order QCD analysis. The scale dependence of the mass is found to be consistent with QCD expectations.File in questo prodotto:
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