We report improved measurements of time-dependent CP violation parameters for B0(B̄0)→J/ψπ0 decay. This analysis is based on 535×106 BB̄ pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters SJ/ψπ0=-0.65±0.21(stat) ±0.05(syst)andAJ/ψπ0=+0.08±0.16(stat)±0.05(syst), which are consistent with standard model expectations.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 2008 Apr 1|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)