Measurement of the Branching Fraction, and Bounds on the CP-Violating Asymmetries, of NeutralBDecays toD*±D∓

We present measurements of the branching fraction and CP-violating asymmetries for neutral $B$ decays to $D^{*\pm }{D}^{\mp }$. The measurement uses a data sample of approximately $88\times {10}^6$ ${\rm Y}(4S)\to B\overline{B}$ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy $e^{+}\mathrm{\text{−}}{e}^{-}$ collider. By fully reconstructing the $D^{*\pm }{D}^{\mp }$ decay products, we measure the branching fraction to be $(8.8\pm 1.0\pm 1.3)\times {10}^{-4}$ and the time-integrated CP-violating asymmetry between the rates to $D^{*-}{D}^{+}$ and $D^{*+}{D}^{-}$ to be $\mathcal{A}=-0.03\pm 0.11\pm 0.05$. We also measure the time-dependent CP-violating asymmetry parameters to be $S_{-+}=-0.24\pm 0.69\pm 0.12$, $C_{-+}=-0.22\pm 0.37\pm 0.10$ for $B\to D^{*-}{D}^{+}$ and $S_{+-}=-0.82\pm 0.75\pm 0.14$, $C_{+-}=-0.47\pm 0.40\pm 0.12$ for $B\to D^{*+}{D}^{-}$. In each case, the first error is statistical and the second error is systematic.