Measurements of the Cross Section for $e^{+} e^{-} \to Hadrons$ at Center-of-Mass Energies from 2 to 5 GeV

Authors:

YBY. Ban
Y. Ban
JBJ. G. Bian
J. G. Bian
ACA. D. Chen
A. D. Chen
HCH. S. Chen
H. S. Chen
JCJ. C. Chen
J. C. Chen
XCX. D. Chen
X. D. Chen
YCY. B. Chen
Y. B. Chen
BCB. S. Cheng
B. S. Cheng
SCS. P. Chi
S. P. Chi
YCY. P. Chu
Y. P. Chu
JCJ. B. Choi
J. B. Choi

Publisher website

25 February 2002

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

Vol. 88 (10) , 101802
DOI:10.1103/physrevlett.88.101802
PMID:11909342

Abstract

We report values of

R = σ (e^{+} e^{-} \to hadrons) / σ (e^{+} e^{-} \to μ^{+} μ^{-})

for 85 center-of-mass energies between 2 and

5 GeV

measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.

Keywords

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