Abstract
With 7.8 million produced J/ψ events collected by the BES detector at the BEPC, the decay J/ψ→∑0∑̄0 is analysed. The branching ratio is measured to be BR(J/ψ→∑0∑̄0) = (0.97 ± 0.04 ± 0.24) × 10-3. The angular distribution is of the form dN/dcosθ = N0(1 + αcos2θ) with α value of -0.21 ± 0.27 ± 0.13.
| Original language | English |
|---|---|
| Pages (from-to) | 93-99 |
| Number of pages | 7 |
| Journal | Kao Neng Wu Li Yu Ho Wu Li/High Energy Physics and Nuclear Physics |
| Volume | 26 |
| Issue number | 2 |
| State | Published - Feb 2002 |
| Externally published | Yes |
Keywords
- Angular distribution
- Beijing spectrometer
- Branching ratio
- J/ψ particle
- ∑ particle