Measurement of Bs0 Mixing Parameters from the Flavor-Tagged Decay Bs0→J/ψϕ
Abstract
From an analysis of the flavor-tagged decay Bs0→J/ψϕ we obtain the width difference between the Bs0 light and heavy mass eigenstates, ΔΓs=0.19±0.07(stat)-0.01+0.02(syst)ps-1, and the CP-violating phase, ϕs=-0.57-0.30+0.24(stat)-0.02+0.08(syst). The allowed 90% CL intervals of ΔΓs and ϕs are 0.06<ΔΓs<0.30ps-1 and -1.20<ϕs<0.06, respectively. The data sample corresponds to an integrated luminosity of 2.8fb-1 accumulated with the D0 detector at the Fermilab Tevatron collider.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2008
- DOI:
- 10.1103/PhysRevLett.101.241801
- arXiv:
- arXiv:0802.2255
- Bibcode:
- 2008PhRvL.101x1801A
- Keywords:
-
- 13.25.Hw;
- 11.30.Er;
- Decays of bottom mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- High Energy Physics - Experiment
- E-Print:
- 7 pages, 2 figures