PSI(2S) Two- and Three-Body Hadronic Decays
- SLAC
The authors report measurements of branching fractions for {psi}(2S) decays into {omega}{pi}{sup +} {pi}{sup -}, b{sub 1}{pi}, {omega}f{sub 2}(1270), {omega}K{sup +}K{sup -}, {omega}p{bar p}, {phi}{pi}{sup +}{pi}{sup -}, {phi}f{sub 0}(980), {phi}K{sup +} K{sup -}, and an upper limit for {phi}p{bar p} final states based on a data sample of (4.02 {+-} 0.22) x 10{sup 6} {psi}(2S) events collected with the BESI detector at the Beijing Electron-Positron Collider. The branching fractions for b{sub 1}{pi} and {omega}f{sub 2}(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 six for {omega}f{sub 2}(1270), by a factor of two for {omega}{pi}{sup +} {pi}{sup -}, {omega}p{bar p}, and {phi}K{sup +} K{sup -}, while for other studied channels the ratios are consistent with expectation within errors.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 808672
- Report Number(s):
- SLAC-PUB-9569
- Country of Publication:
- United States
- Language:
- English
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