Branching Fractions for ψ(2S)-to-J/ψ Transitions
Abstract
We describe new measurements of the inclusive and exclusive branching fractions for ψ(2S) transitions to J/ψ using e+e- collision data collected with the CLEO detector operating at CESR. All branching fractions and ratios of branching fractions reported here represent either the most precise measurements to date or the first direct measurements. Indirectly and in combination with other CLEO measurements, we determine B(χcJ→γJ/ψ) and B[ψ(2S)→ light hadrons].
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2005
- DOI:
- 10.1103/PhysRevLett.94.232002
- arXiv:
- arXiv:hep-ex/0503028
- Bibcode:
- 2005PhRvL..94w2002A
- Keywords:
-
- 13.20.Gd;
- 13.25.Gv;
- Decays of J/psi Upsilon and other quarkonia;
- High Energy Physics - Experiment
- E-Print:
- 11 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/