We report the results of a CP violation analysis of the decay B±→Dπ+π-π0K±, where Dπ+π-π0 indicates a neutral D meson detected in the final state π+π-π0, excluding KS0π0. The analysis makes use of 324×106 e+e-→BB̄ events recorded by the BABAR experiment at the PEP-II e+e- storage ring. Analyzing the π+π-π0 Dalitz plot distribution and the B±→Dπ+π- π0K± 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<0.78, -30°<76°, -27°<78°. We also measure the magnitudes and phases of the components of the D0→π+π-π0 decay amplitude.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurement of CP violation parameters with a dalitz plot analysis of B±→Dπ+π-π0K±. PHYSICAL REVIEW LETTERS, 99(25) [10.1103/PhysRevLett.99.251801].

Measurement of CP violation parameters with a dalitz plot analysis of B±→Dπ+π-π0K±

Carpinelli M;
2007

Abstract

We report the results of a CP violation analysis of the decay B±→Dπ+π-π0K±, where Dπ+π-π0 indicates a neutral D meson detected in the final state π+π-π0, excluding KS0π0. The analysis makes use of 324×106 e+e-→BB̄ events recorded by the BABAR experiment at the PEP-II e+e- storage ring. Analyzing the π+π-π0 Dalitz plot distribution and the B±→Dπ+π- π0K± 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<0.78, -30°<76°, -27°<78°. We also measure the magnitudes and phases of the components of the D0→π+π-π0 decay amplitude.
Articolo in rivista - Articolo scientifico
Measurement theory; Parameter estimation; Amplitude ratio; Branching fraction; Decay amplitude; Decay rate; High energy physics;
English
2007
99
25
251801
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurement of CP violation parameters with a dalitz plot analysis of B±→Dπ+π-π0K±. PHYSICAL REVIEW LETTERS, 99(25) [10.1103/PhysRevLett.99.251801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389703
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