Evidence of time-dependent CP violation in the decay B0 to D*+D*-

Abstract

We report a measurement of the CP-odd fraction and the time-dependent CP violation in B0 to D*+D*- decays, using 657.10^6 BBbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a CP-odd fraction of Rperp=0.125+/-0.043(stat)+/-0.023(syst). From the distributions of the proper-time intervals between a B0to D*+D*- decay and the other B meson in the event, we obtain evidence of CP violation with measured parameters AD*+D*-=0.15+/-0.13(stat)+/-0.04(syst) and SD*+D*-=-0.96+/-0.25(stat)-0.16+0.13(syst).

Published in PRD

References in corpus (3)

• Measurement of CP-Violating Asymmetries in B0->D(*)+D-
• Evidence for CP Violation in B0 -> D+D- Decays
• Measurements of time-dependent CP asymmetries in B0 --> D(*)+D(*)- decays

Cited by in corpus (3)

• Measurements of Branching Fractions and Time-dependent CP Violating Asymmetries in $B^0\to D^{(\ast )\pm }{D}^{\mp }$ Decays
• Measurement of the Time-Dependent CP Asymmetry of Partially Reconstructed B0->D*+D*- Decays
• First observation of CP violation and improved measurement of the branching fraction and polarization of B0 -> D*+ D*- decays