We perform an amplitude analysis of B±→φ(1020)K*(892) ± decay with a sample of about 384×106 BB̄ pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal fL and parity-odd transverse f amplitudes, branching fraction, strong phases, and six parameters sensitive to CP violation. We use the dependence on the Kπ invariant mass of the interference between the JP=1- and 0+ Kπ components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of fL=0.49±0.05±0. 03, f=0.21±0.05±0.02, and the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Amplitude analysis of the B±→φK*(892)± decay. PHYSICAL REVIEW LETTERS, 99(20) [10.1103/PhysRevLett.99.201802].

Amplitude analysis of the B±→φK*(892)± decay

CARPINELLI, Massimo;
2007

Abstract

We perform an amplitude analysis of B±→φ(1020)K*(892) ± decay with a sample of about 384×106 BB̄ pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal fL and parity-odd transverse f amplitudes, branching fraction, strong phases, and six parameters sensitive to CP violation. We use the dependence on the Kπ invariant mass of the interference between the JP=1- and 0+ Kπ components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of fL=0.49±0.05±0. 03, f=0.21±0.05±0.02, and the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source.
Articolo in rivista - Articolo scientifico
High energy physics; Measurement theory; Parameter estimation; Wave interference; Amplitude analysis; Branching fraction; Discrete ambiguity; Weak phases; Particle detectors;
English
2007
99
20
201802
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Amplitude analysis of the B±→φK*(892)± decay. PHYSICAL REVIEW LETTERS, 99(20) [10.1103/PhysRevLett.99.201802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389667
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