Extracting alpha_s from Electron-Positron Annihilation around 10 GeV

Details Extracting alpha_s from Electron-Positron Annihilation around 10 GeV Extracting alpha_s from Electron-Positron Annihilation around 10 GeV

1996-09-19

arxiv.org/abs/hep-ph/9609411v2

Phys.Rev. D56 (1997) 3011-3018

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTeX, 4 figures. Discussion of uncertainties slightly modified. Version to appear in Physical Review D. The complet

Scientific paper

10.1103/PhysRevD.56.3011

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.

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