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

  • Ammar R
  • Baringer P
  • Bean A
  • et al.
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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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Ammar, R., Baringer, P., Bean, A., Besson, D., Coppage, D., Darling, C., … Sadoff, A. J. (1998). Measurement of the total cross section for    e  +      e  −    →  hadrons at    s        = 10.52  GeV. Physical Review D, 57(3), 1350–1358. https://doi.org/10.1103/physrevd.57.1350

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