We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0?D*+D*- decays using a data sample of 772×106BB pairs, collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain a branching fraction of B=(7.82±0.38±0.63)×10-4, a CP-odd fraction of R?=0.138±0.024±0.006 and, additionally, a fraction of the longitudinal component in the transversity base of R0=0.624±0.029±0.011. The measured values of the parameters of the CP violation are SD*+D*-=-0.79±0.13±0.03 and AD*+D*-=0.15±0.08±0.04.
Revised: August 29, 2016 |
Published: October 18, 2012
Citation
Kronenbitter B., I. Adachi, H. Aihara, K. Arinstein, D.M. Asner, T. Aushev, and T. Aziz, et al. 2012.First observation of CP violation and improved measurement of the branching fraction and polarization of B0?D*+D*- decays.Physical Review D 86, no. 7:Article No. 071103.PNNL-SA-92407.doi:10.1103/PhysRevD.86.071103