Observation of a Near-Threshold ωJ/ψ Mass Enhancement in Exclusive B→KωJ/ψ Decays
Abstract
We report the observation of a near-threshold enhancement in the ωJ/ψ invariant mass distribution for exclusive B→KωJ/ψ decays. The results are obtained from a 253 fb-1 data sample that contains 275×106 BB¯ pairs that were collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. The statistical significance of the ωJ/ψ mass enhancement is estimated to be greater than 8σ.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 2005
- DOI:
- 10.1103/PhysRevLett.94.182002
- arXiv:
- arXiv:hep-ex/0408126
- Bibcode:
- 2005PhRvL..94r2002C
- Keywords:
-
- 14.40.Gx;
- 12.39.Mk;
- 13.25.Hw;
- Mesons with S=C=B=0 mass>2.5 GeV;
- Glueball and nonstandard multi-quark/gluon states;
- Decays of bottom mesons;
- High Energy Physics - Experiment
- E-Print:
- 12 pages, 4 figures, submitted to Physical Review Letters