Measurement of the mass of the B0s meson
Abstract
We measure the mass of the B0s meson by reconstructing the decay chain B0s-->J/ψφ, J/ψ-->μ+μ-, and φ-->K+K-. The data are obtained from 19.3 pb-1 of integrated luminosity of p¯p collisions at √s=1.8 TeV using the Collider Detector at Fermilab. A sample of 80 000 inclusive J/ψ-->μ+μ- events is used to study systematic biases in track reconstruction and to calibrate the momentum scale. We reconstruct the kinematically similar decays B+-->J/ψK+ and B0-->J/ψK*0 to study the mass measurement technique used for the B0s meson. Based on the observation of 32 +/- 6 candidates, the mass of the B0s meson is measured to be 5369.9 +/- 2.3 +/- 1.3 MeV/c2 and the mass difference between B0s and the average mass of B+ and B0 is determined to be 89.7 +/- 2.7 +/- 1.2 MeV/c2.
- Publication:
-
Physical Review D
- Pub Date:
- April 1996
- DOI:
- 10.1103/PhysRevD.53.3496
- Bibcode:
- 1996PhRvD..53.3496A
- Keywords:
-
- 13.25.Hw;
- 14.40.Nd;
- Decays of bottom mesons;
- Bottom mesons