First Observation of the Decay B {yields} J/{psi}{phi}K
Journal Article
·
· Physical Review Letters
- Ohio State University, Columbus, Ohio 43210 (United States)
We present the first observation of the decay B{yields}J/{psi}{phi}K . Using 9.6x10{sup 6} BB meson pairs collected with the CLEO detector, we have observed ten fully reconstructed B{yields}J/{psi}{phi}K candidates, whereas the estimated background is 0.5{+-}0.2 event. We obtain a branching fraction of B(B{yields}J/{psi}{phi}K)=( 8.8{sup +3.5}{sub -3.0}[stat] {+-}1.3[syst])x10{sup -5} . This is the first observed B meson decay requiring the creation of an additional ss quark pair. (c) 2000 The American Physical Society.
- OSTI ID:
- 20215542
- Journal Information:
- Physical Review Letters, Vol. 84, Issue 7; Other Information: PBD: 14 Feb 2000; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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