Evidence of psi(3770) nonD anti-D decay to J / psi pi+ pi-
Jul, 20034 pages
Published in:
- Phys.Lett.B 605 (2005) 63-71
e-Print:
- hep-ex/0307028 [hep-ex]
Experiments:
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Abstract: (Elsevier)
Evidence of ψ(3770) decays to a non- DD¯ final state is observed. A total of 11.8±4.8±1.3 ψ(3770)→J/ψπ+π− events are obtained from a data sample of 27.7 pb −1 taken at center-of-mass energies around 3.773 GeV using the BES-II detector at the BEPC. The branching fraction is determined to be BF(ψ(3770)→J/ψπ+π−)=(0.34±0.14±0.09)% , corresponding to the partial width of Γ(ψ(3770)→J/ψπ+π−)=(80±33±23) keV .Note:
- 8 pages, 7 figures, Submitted to Physics Letters B
- electron positron: colliding beams
- electron positron: annihilation
- psi(3770): electroproduction
- psi(3770): hadronic decay
- psi(3770): width
- psi(3770): branching ratio
- J/psi(3100)
- energy spectrum: (pi+ pi-)
- BES
- experimental results
References(12)
Figures(8)