Psi(2S) two- and three-body hadronic decays

Details Psi(2S) two- and three-body hadronic decays Psi(2S) two- and three-body hadronic decays

2002-09-30

arxiv.org/abs/hep-ex/0209080v4

Phys.Rev.D67:052002,2003

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages,12 figures and 1 table

Scientific paper

10.1103/PhysRevD.67.052002

We report measurements of branching fractions for psi(2S) decays into omega pi pi, b1 pi,omega f2(1270),omega KK, omega p pbar, phi pi pi, phi f0(980),phi KK, and an upper limit for phi p pbar final states based on a data sample of 4 X 10^6 psi(2S) events collected with the BESI detector at the Beijing Electron-Positron Collider. The branching fractions for b1 pi and omega f2(1270) update previous BES results, while those for other decay modes are first measurements. The ratios of psi(2S)and J/psi branching fractions are smaller than what is expected from the 12% rule by a factor of five for omega f2(1270),by a factor of two for omega pi pi, omega p pbar, and phi KK, while for other studied channels the ratios are consistent with expectation within errors.

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