Abstract
We observe signals for the decays ψ(3770)→XJ/ψ from data acquired with the CLEO detector operating at the CESR e+e- collider with s=3773MeV. We measure the following branching fractions B(ψ(3770)→XJ/ ψ) and significances: (189±20±20)×10-5 (11.6σ) for X=π+π-, (80±25±16)×10-5 (3.4σ) for X=π0π0, and (87±33±22)×10-5 (3.5σ) for X=η, where the errors are statistical and systematic, respectively. The radiative return process e+e-→γψ(2S) populates the same event sample and is used to measure Γee[ψ(2S)]=(2.54±0.03±0.11)keV.
| Original language | English (US) |
|---|---|
| Article number | 082004 |
| Journal | Physical review letters |
| Volume | 96 |
| Issue number | 8 |
| DOIs | |
| State | Published - 2006 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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