Measurement of the total cross section for $e^{+} e^{-} \to$ hadrons at $\sqrt{s} = 10.52$ GeV

Publisher Website

1 February 1998

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 57 (3) , 1350-1358
https://doi.org/10.1103/physrevd.57.1350

Abstract

Using the CLEO detector at the Cornell Electron Storage Ring, we have made a measurement of

R \equiv σ {(e}^{+} e^{-} \to hadrons) / σ {(e}^{+} e^{-} \to μ^{+} μ^{-}) = 3.56 \pm 0.01 \pm 0.07

at

\sqrt{s}

=10.52 GeV. This implies a value for the strong coupling constant of

α_{s} (10.52 GeV) = 0.20 \pm 0.01 \pm 0.06

, or

α_{s} {(M}_{Z}) = 0.13 \pm 0.005 \pm 0.03

.

Keywords

CLEO

All Related Versions

Version 1, 1997-07-08, ArXiv

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