Observation of the decay B0s-->J/ψ φ in p¯p collisions at √s =1.8 TeV
Abstract
This Letter reports the observation and mass measurement of fully reconstructed B0s mesons through the decay chain B0s-->J/ψ ψ, J/ψ-->μ+μ-, φ-->K+K- using data obtained at the Collider Detector at Fermilab in p¯p collisions at √s =1.8 TeV. A signal of 14.0+/-4.7 events is observed. Comparison of the B0s signal with the kinematically similar decays B+-->J/ψ K+ and B0-->J/ψ K*(892)0 is presented. The mass of the B0s meson is determined to be 5383.3+/-4.5(stat)+/-5.0(syst) MeV/c2.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1993
- DOI:
- 10.1103/PhysRevLett.71.1685
- Bibcode:
- 1993PhRvL..71.1685A
- Keywords:
-
- 13.25.+m;
- 14.40.Jz