Measurement of Branching Fraction and Time-Dependent CP Asymmetry Parameters in B0 -> D*+ D*- Ks Decays

TL;DR

This paper reports measurements of the branching fraction and CP asymmetry parameters in B0 decays to D*+ D*- Ks, using a large data sample from the Belle detector, and sets an upper limit on a related two-body decay.

Contribution

First measurement of CP violation parameters in B0 -> D*+ D*- Ks decays using Belle data, providing new insights into CP violation in B meson systems.

Findings

Measured branching fraction for B0 -> D*+ D*- Ks.

Determined time-dependent CP asymmetry parameters.

Set an upper limit on B0 -> Ds1+(2536) D*- decay.

Abstract

We present a measurement of the branching fraction and time-dependent CP violation parameters for B0 -> D*+ D*- Ks decays. We also obtain an upper limit on the product branching fraction for the possible two-body decay, B0 -> Ds1+(2536) D*-. These results are obtained from a 414 fb-1 data sample that contains 449e10^6 BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider.