2011

Charm Mass Determination from QCD Charmonium Sum Rules at Order alpha_s^3

Dehnadi, Bahman, Hoang, Andre H., Mateu, Vicent et al.

Understand

We determine the MS-bar charm quark mass from a charmonium QCD sum rules analysis.

  • On the theoretical side we use input from perturbation theory at O(alpha_s^3).
  • Improvements with respect to previous O(alpha_s^3) analyses include (1) an account of all available e+e- hadronic cross section data and (2) a thorough analysis of perturbative uncertainties.
  • Using a data clustering method to combine hadronic cross section data sets from different measurements we demonstrate that using all available experimental data up to c.m.

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