TTP - TTP99-42 Quark mass effects to \sigma(e^+e^- -> hadrons) at O(\alpha

Institute for Theoretical Particle Physics (TTP)

TTP99-42 Quark mass effects to \sigma(e^+e^- -

hadrons) at O(\alpha_s^3) > The calculation of the quartic mass terms at order \alpha_s^3 to the hadronic R ratio is described. It is based on the operator product expansion for the quark current correlator, combined with an application of the renormalization group equation.

K.G. Chetyrkin, R. Harlander, and J.H. Kuehn

Proc. Int. Europhysics Conf. on High Energy Physics (EPS-HEP99), Tampere, Finland 1999, pg. 382-384

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TTP99-42 Quark mass effects to \sigma(e^+e^- -> hadrons) at O(\alpha_s^3)

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