Measurements of J/psi Decays into 2(pi+pi-)eta and 3(pi+pi-)eta

Details Measurements of J/psi Decays into 2(pi+pi-)eta and 3(pi+pi-)eta Measurements of J/psi Decays into 2(pi+pi-)eta and 3(pi+pi-)eta

2004-11-24

arxiv.org/abs/hep-ex/0411073v1

Phys.Lett.B610:192-198,2005

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, 6 figures

Scientific paper

10.1016/j.physletb.2005.02.004

Based on a sample of 5.8X 10^7 J/psi events taken with the BESII detector,
the branching fractions of J/psi--> 2(pi+pi-)eta and J/psi-->3(pi+pi-)eta are
measured for the first time to be (2.26+-0.08+-0.27)X10^{-3} and
(7.24+-0.96+-1.11)X10^{-4}, respectively.

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