Observation of Υ(4S) decays into non-BB¯final states containing ψ mesons
- 7 May 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (19) , 2226-2229
- https://doi.org/10.1103/physrevlett.64.2226
Abstract
We report on the observation of ψ mesons from Υ(4S) decays which are too energetic to come from B mesons. These events provide the first evidence for non-BB¯ decays of the Υ(4S). The measured rate is B[Υ(4s)→ψX]=(0.22±0.06±0.04)% for ψ momentum above 2 GeV/c.Keywords
This publication has 11 references indexed in Scilit:
- Exclusive decays and masses of theBmesonsPhysical Review D, 1987
- The OZI rule in charmonium decays above D
- B-meson production between the Υ(4S) and Υ(6S) and the possibility of detecting B-B¯ mixingPhysical Review D, 1986
- Observation of B-meson decay into JψPhysics Letters B, 1985
- DecayPhysical Review Letters, 1985
- q $$\bar q$$ g Hybrid mesons in ψ → γ+hadronsThe European Physical Journal C, 1985
- Inclusive hadron production in upsilon decays and in nonresonant electron-positron annihilation at 10.49 GeVPhysical Review D, 1985
- The CLEO detectorNuclear Instruments and Methods in Physics Research, 1983
- Testing QCD trough inclusiveJ/?-production ine +e? annihilationsThe European Physical Journal C, 1981
- Observables for the Analysis of Event Shapes inAnnihilation and Other ProcessesPhysical Review Letters, 1978