Abstract
We have studied the inclusive photon spectrum in ψ(2S) decays using the CLEO III detector. We present the most precise measurements of electric dipole (E1) photon transition rates for ψ(25) → γχ eJ(1P) (J = 0, 1, 2). We also confirm the hindered magnetic dipole (M1) transition, ψ(2S) → γη c(1S). However, the direct M1 transition ψ(2S) → γη c(2S) observed by the Crystal Ball as a narrow peak at a photon energy of 91 McV is not found in our data.
| Original language | English (US) |
|---|---|
| Article number | 112002 |
| Pages (from-to) | 112002-1-112002-6 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 70 |
| Issue number | 11 |
| DOIs | |
| State | Published - Dec 2004 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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