Higher Moments of Heavy Quark Vacuum Polarization

نویسندگان

  • J. H. Kühn
  • M. Steinhauser
چکیده

We present analytical calculation of the first seven moments of the heavy quark vacuum polarization function in the three-loop order. The obtained results are compared against the asymptotic formulas following from the threshold singulari-ties. We also discuss the µ dependence of the moments within the BLM procedure.

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تاریخ انتشار 1996