Evidence of time-dependent CP violation in the decay B0 to D*+D*-
High Energy Physics - Experiment
2019-08-13 v2
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).
Cite
@article{arxiv.0901.4057,
title = {Evidence of time-dependent CP violation in the decay B0 to D*+D*-},
author = {K. Vervink and T. Aushev and O. Schneider},
journal= {arXiv preprint arXiv:0901.4057},
year = {2019}
}
Comments
Published in PRD