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

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

2007-03-23

arxiv.org/abs/hep-ex/0703037v1

Phys.Rev.Lett.99:251801,2007

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 6 postscript figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.99.251801

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.

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