# Measurement of CP-Violating Asymmetries in $B^0 \to D^{(*)\pm}D^{\mp}$

Abstract : We present updated measurements of \CP-violating asymmetries in the decays $\Bz\to\Dstarpm\Dmp$ and $\Bz\to\Dp\Dm$ using $(383\pm 4) \times 10^{6} \BB$ pairs collected by the \babar detector at the PEP-II $B$ factory. We determine the time-integrated \CP asymmetry ${\mathcal{A}}_{\Dstarpm\Dmp}=0.12\pm 0.06\pm 0.02$, and the time-dependent asymmetry parameters to be $C_{\Dstarp\Dm} =0.18\pm 0.15\pm 0.04$, $S_{\Dstarp\Dm}=-0.79\pm 0.21\pm 0.06$, $C_{\Dstarm\Dp} =0.23\pm 0.15\pm 0.04$, $S_{\Dstarm\Dp} =-0.44\pm 0.22\pm 0.06$, $C_{\Dp\Dm} =0.11\pm 0.22\pm 0.07$, and $S_{\Dp\Dm} =-0.54\pm 0.34\pm 0.06$, where the first uncertainty is statistical and the second is systematic.
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http://hal.in2p3.fr/in2p3-00149825
Contributor : Claudine Bombar <>
Submitted on : Monday, May 28, 2007 - 4:58:28 PM
Last modification on : Tuesday, December 22, 2020 - 12:40:02 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Measurement of CP-Violating Asymmetries in $B^0 \to D^{(*)\pm}D^{\mp}$. Physical Review Letters, American Physical Society, 2007, 99, pp.071801. ⟨10.1103/PhysRevLett.99.071801⟩. ⟨in2p3-00149825⟩

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