# Measurement of CP Violation Parameters with a Dalitz Plot Analysis of $B^\pm \to D_{\pi^+\pi^-\pi^0} K^\pm$

Abstract : We report the results of a CP violation analysis of the decay B+/- --> D(pipipi0)K+/-, where D(pipipi0) indicates a neutral D meson detected in the final state pi+pi-pi0, excluding K_S pi0. The analysis makes use of 324 million e+e- --> BB events recorded by the BaBar experiment at the PEP-II e+e- storage ring. By analyzing the pi+pi-pi0 Dalitz plot distribution and the B+/- --> D(pipipi0)K+/- branching fraction and decay rate asymmetry, we calculate parameters related to the phase gamma of the CKM unitarity triangle. We also measure the magnitudes and phases of the components of the D0 --> pi+pi-pi0 decay amplitude.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00149776
Contributor : Claudine Bombar <>
Submitted on : Monday, May 28, 2007 - 3:03:20 PM
Last modification on : Saturday, November 28, 2020 - 12:58:03 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Measurement of CP Violation Parameters with a Dalitz Plot Analysis of $B^\pm \to D_{\pi^+\pi^-\pi^0} K^\pm$. Physical Review Letters, American Physical Society, 2007, 99, pp.251801. ⟨10.1103/PhysRevLett.99.251801⟩. ⟨in2p3-00149776⟩