Research Papers in Physics and Astronomy

 

Date of this Version

2-1-1998

Comments

Published by American Physical Society. Phys. Rev. D 57, 1350 (1998). Permission to use. http://prd.aps.org/. Copyright © 1998 American Physical Society.

Abstract

Using the CLEO detector at the Cornell Electron Storage Ring, we have made a measurement of R≡ σ(e+e- → hadrons)/σ(e+e-μ+μ-)=3.56± 0.01± 0.07 at √s= 10.52 GeV. This implies a value for the strong coupling constant of αs(10.52 GeV) =0.20±0.01±0.06, or αs (MZ)=0.13±0.005±0.03.

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