OPE, Heavy-Quark Mass, and Heavy-Meson Decay Constants from QCD Sum Rules

@inproceedings{Lucha2010OPEHM,
  title={OPE, Heavy-Quark Mass, and Heavy-Meson Decay Constants from QCD Sum Rules},
  author={Wolfgang Lucha and Dmitri Melikhov and S. Simula},
  year={2010}
}
We present a sum-rule extraction of the decay constants of he avy-light mesons from the two-point correlator of pseudoscalar currents [1]. To this end, we com pare the perturbative expansions for the correlator and the decay constant performed in terms of e ither the pole mass or the running MS mass of the heavy quark. The perturbative expansion express ed in terms of the pole mass exhibits no sign of convergence whereas reorganizing this very expan sion in terms of theMS mass yields a rather… CONTINUE READING

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