TTP96-35 Extracting alpha_s from Electron-Positron Annihilation around 10 GeV

TTP96-35 Extracting alpha_s from Electron-Positron Annihilation around 10 GeV

TTP96-35 Extracting alpha_s from Electron-Positron Annihilation around 10 GeV

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 alpha_QED and the tails of the Upsilon resonances are included in the prediction. For given alpha_s the prediction is accurate to 0.5 percent. An experimental measurement with the corresponding precision would allow to determine alpha_s with high accuracy at intermediate energies.

K. G. Chetyrkin, J. H. Kuehn, T. Teubner
Phys.Rev. D56 3011-3018 1997
PDF PostScript arXiv
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