We report the results of a CP violation analysis of the decay B(+/-) -> D(pi+)pi(-)pi(0)K(+/-), where D(pi)(+)pi(-)pi(0) indicates a neutral D meson detected in the final state pi(+)pi(-)pi(0), excluding K(S)(0)pi(0). The analysis makes use of 324x10(6) e(+)e -> B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring. Analyzing the pi(+)pi(-)pi(0) Dalitz plot distribution and the B(+/-) -> D(pi)(+)pi(-)pi(0)K(+/-) branching fraction and decay rate asymmetry, we find the following one-standard-deviation constraints on the amplitude ratio and on the weak and strong phases: 0.06 < r(B)< 0.78, -30 degrees <gamma < 76 degrees, -27 degrees <delta < 78 degrees. We also measure the magnitudes and phases of the components of the D(0) -> pi(+)pi(-)pi(0) decay amplitude.

Measurement of CP violation parameters with a Dalitz plot analysis of B(+/-) -> D(pi+)pi(-)pi(0)K(+/-)

ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;CALDERINI, GIOVANNI;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2007

Abstract

We report the results of a CP violation analysis of the decay B(+/-) -> D(pi+)pi(-)pi(0)K(+/-), where D(pi)(+)pi(-)pi(0) indicates a neutral D meson detected in the final state pi(+)pi(-)pi(0), excluding K(S)(0)pi(0). The analysis makes use of 324x10(6) e(+)e -> B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring. Analyzing the pi(+)pi(-)pi(0) Dalitz plot distribution and the B(+/-) -> D(pi)(+)pi(-)pi(0)K(+/-) branching fraction and decay rate asymmetry, we find the following one-standard-deviation constraints on the amplitude ratio and on the weak and strong phases: 0.06 < r(B)< 0.78, -30 degrees pi(+)pi(-)pi(0) decay amplitude.
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