Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-04-17
Phys.Rev.Lett.95:091601,2005
Physics
High Energy Physics
High Energy Physics - Experiment
10 pages, 2 tables, 3 figures, submitted to PRL; Replaced with the version resubmitted to PRL (Jul.13,2005)
Scientific paper
10.1103/PhysRevLett.95.091601
CP violation in $B\to J/\psi K^*$ decays is studied using an angular analysis in a data sample of 253 fb$^{-1}$ recorded with the Belle detector at the KEKB $e^+e^-$ collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the Standard Model null predictions. The time-dependent angular analysis gives the following values of CP violating parameters: $\sin 2\phi_1 = 0.24 \pm 0.31 \pm 0.05$ and $\cos 2\phi_1 = 0.56 \pm 0.79 \pm 0.11$.
for the Belle Collaboration
Itoh Ryosuke
Onuki Yoshichika
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