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arXiv · hep-ph/9711327

Massive Quark Production in Electron Positron Annihilation to Order $α_s^2$

K. G. Chetyrkin·A. H. Hoang·J. H. Kühn·M. Steinhauser·T. Teubner
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Abstract

Recent analytical and numerical results for the three-loop polarization function allow to present a phenomenological analysis of the cross section for massive quark production in electron positron annihilation to order $α_s^2$. Numerical predictions based on fixed order perturbation theory are presented for charm and bottom production above 5 and 11.5 GeV, respectively. The contribution from these energy regions to $α(M_Z^2)$, the running QED coupling constant at scale M_Z, are given. The dominant terms close to threshold, i.e. in an expansion for small quark velocity $β$, are presented.

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K. G. Chetyrkin, A. H. Hoang, J. H. Kühn, M. Steinhauser, T. Teubner. 1997-11-13. Massive Quark Production in Electron Positron Annihilation to Order $α_s^2$. https://doi.org/10.1007/s100520050128

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