Abstract
Using 5.63pb-1 of data accumulated at the ψ(2S) resonance with the CLEO III and CLEO-c detectors corresponding to 3.08×106 ψ(2S) decays, a search is performed for the decay ψ(2S)→ηcπ+π-π0 to test a theoretical prediction based upon the assumption that the cc̄ pair in the ψ(2S) does not annihilate directly into three gluons but rather survives before annihilating. No signal is observed, and a combined upper limit from six ηc decay modes is determined to be B(ψ(2S)→ηcπ+π-π0) ≤1.0×10-3 at 90% C.L. This upper limit is about an order of magnitude below the theoretical expectation.
Original language | English (US) |
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Article number | 011102 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 75 |
Issue number | 1 |
DOIs | |
State | Published - 2007 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)