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Measurement of sigma(e^+e^- --> psi(3770) --> hadrons) at E_{cm}=3773 MeV

High Energy Physics - Experiment 2010-04-15 v1
Authors: D. Besson
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Abstract

We measure the cross section for e^+e^- -> \psi(3770) -> hadrons at Ecm=3773 MeV to be (6.38+-0.08^{+0.41}_{-0.30}) nb using the CLEO detector at the CESR e^+e^- collider. The difference between this and the e^+e^- -> \psi(3770) -> DD-bar cross section at the same energy is found to be (-0.01+-0.08^{+0.41}_{-0.30}) nb. With the observed total cross section, we extract \Gamma_ee(\psi(3770))=(0.204+-0.003^{+0.041}_{-0.027}) keV. Uncertainties shown are statistical and systematic, respectively.

Keywords

cross section psi(3770) CLEO detector hadronic decays electronic width

Cite

@article{arxiv.hep-ex/0512038,
  title  = {Measurement of sigma(e^+e^- --> psi(3770) --> hadrons) at E_{cm}=3773 MeV},
  author = {D. Besson},
  journal= {arXiv preprint arXiv:hep-ex/0512038},
  year   = {2010}
}

Comments

9 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/, Submitted to PRL

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