Measurement of time-dependent CP asymmetries and constraints on $sin(2\beta+\gamma)$ with partial reconstruction of $B^0 \to D^{*\mp} \pi^{\pm}$ decays

Abstract : We present a measurement of time-dependent CP-violating asymmetries in decays of neutral B mesons to the final states D*-+ pi+-, using approximately 82 million B B bar events recorded by the BABAR experiment at the PEP-II e+ e- storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high-momentum pi+- from the B decay and the low-momentum pi-+ from the D*-+ decay are used. We measure the amplitude of the asymmetry to be -0.063 +- 0.024(stat.) +- 0.014(syst.) and compute bounds on |sin(2beta + gamma)|.
Document type :
Journal articles

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Submitted on : Tuesday, July 27, 2004 - 3:54:10 PM
Last modification on : Friday, October 8, 2021 - 10:20:02 AM

Citation

B. Aubert, R. Barate, D. Boutigny, F. Couderc, J.M. Gaillard, et al.. Measurement of time-dependent CP asymmetries and constraints on $sin(2\beta+\gamma)$ with partial reconstruction of $B^0 \to D^{*\mp} \pi^{\pm}$ decays. Physical Review Letters, American Physical Society, 2004, 92, pp.251802. ⟨in2p3-00022134⟩

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