H1 and ZEUS

Running charm mass H1+ZEUS

Reference April 2014
Document Conference paper or talk
Figures  (1)  (2)  (3)  (4)
Contact A. Geiser, K. Daum
Abstract The combined HERA data on charm production in deep inelastic scattering have recently been used to determine the charm quark running mass m_c(m_c) in the MS-bar renormalisation scheme. The same data are used differentially as a function of the photon virtuality Q^2 to evaluate the charm quark running mass at different physical scales to one-loop order. The scale dependence of the mass is found to be consistent with QCD expectations, and a graphical represention of the charm mass running, similar to the representation of the beauty mass running from LEP data, is obtained for the first time.
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