Measurement of the Total Cross Section for Hadronic Production by e+e- Annihilation at Energies between 2.6-5 Gev

et al (BES collaboration); J. Z. Bai

arxiv: hep-ex/9908046 · v1 · submitted 1999-08-11 · ✦ hep-ex

Measurement of the Total Cross Section for Hadronic Production by e+e- Annihilation at Energies between 2.6-5 Gev

J. Z. Bai , et al (BES collaboration) This is my paper

classification ✦ hep-ex

keywords annihilationcrossenergieshadronicsectionsigmatotalbeijing

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Using the upgraded Beijing Spectrometer (BESII), we have measured the total cross section for $e^+e^-$ annihilation into hadronic final states at center-of-mass energies of 2.6, 3.2, 3.4, 3.55, 4.6 and 5.0 GeV. Values of $R$, $\sigma(e^+e^-\to {hadrons})/\sigma(e^+e^-\to\mu^+\mu^-)$, are determined.

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