Measurement of the total cross section for e⁺e^-→hadrons at √s=10.52 GeV

Authors

R. Ammar, University of Kansas - Lawrence
Kenneth A. Bloom, University of Nebraska-LincolnFollow
CLEO Collaboration

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 α_s(10.52 GeV) =0.20±0.01±0.06, or α_s (M_Z)=0.13±0.005±0.03.