Measurement of sin 2β with hadronic and previously unused muonic J/ψ decays
Abstract
We report a measurement of the CP-violation parameter sin 2β with B0→J/ψK0S decays in which the J/ψ decays to hadrons or to muons that do not satisfy our standard identification criteria. With a sample of 88 million BB¯ events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we reconstruct 100±17 such events, with J/ψ→π+π-π0 being the most prevalent, and measure sin 2β=1.56±0.42(stat)±0.21(syst).
- Publication:
-
Physical Review D
- Pub Date:
- March 2004
- DOI:
- 10.1103/PhysRevD.69.052001
- arXiv:
- arXiv:hep-ex/0309039
- Bibcode:
- 2004PhRvD..69e2001A
- Keywords:
-
- 13.25.Hw;
- 11.30.Er;
- 12.15.Hh;
- Decays of bottom mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- Determination of Kobayashi-Maskawa matrix elements;
- High Energy Physics - Experiment
- E-Print:
- 8 pages, three figures, submitted to Physical Review D