Extracting alphas from Electron-Positron Annihilation around 10 GeV
K. G. Chetyrkin, J. H. Kuhn, T. Teubner
Abstract
The total cross section for electron-positron annihilation into hadrons is calculated in the region just below the B meson threshold. QCD corrections up to third order, quark mass effects, initial state radiation, the running of alphaQED and the tails of the Upsilon resonances are included in the prediction. For given alphas the prediction is accurate to 0.5 percent. An experimental measurement with the corresponding precision would allow to determine alphas with high accuracy at intermediate energies.
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