Measurement of the final states $ωπ^0$, $ρη$, and $ρ η^{'}$ from $\psip$ electromagnetic decays and $\ee$ annihilations

Details Measurement of the final states $ωπ^0$, $ρη$, and $ρ η^{'}$ from $\psip$ electromagnetic decays and $\ee$ annihilations Measurement of the final states $ωπ^0$, $ρη$, and $ρ η^{'}$ from $\psip$ electromagnetic decays and $\ee$ annihilations

2004-10-11

arxiv.org/abs/hep-ex/0410031v1

Phys.Rev.D70:112007,2004; Erratum-ibid.D71:019901,2005

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 4 figures, 4 tables

Scientific paper

10.1103/PhysRevD.70.112007

Cross sections and form factors for $\ee \to \wpi$, $\rho\eta$, and $\rho\etap$ at center of mass energies of 3.650, 3.686, and 3.773 GeV are measured using data samples collected with the BESII detector at the BEPC. Also, the branching fractions of $\psi(2S) \rar \wpi$, $\rho\eta$, and $\rho\etap$ are determined to be $(1.87^{+0.68}_{-0.62}\pm0.28)\times 10^{-5}$, $(1.78^{+0.67}_{-0.62}\pm0.17)\times 10^{-5}$, and $(1.87^{+1.64}_{-1.11}\pm0.33)\times10^{-5}$, respectively.

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