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arXiv · 0705.1798

Amplitude Analysis of the B+- ->phi K*(892)+- Decay

The BABAR Collaboration·B. Aubert
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Abstract

We perform an amplitude analysis of B+- -> phi(1020) K*(892)+- decay with a sample of about 384 million BBbar pairs recorded with the BABAR detector. Overall, twelve parameters are measured, including the fractions of longitudinal f_L and parity-odd transverse f_perp amplitudes, branching fraction, strong phases, and six parameters sensitive to CP-violation. We use the dependence on the Kpi invariant mass of the interference between the JP=1- and 0+ Kpi components to resolve the discrete ambiguity in the determination of the strong and weak phases. Our measurements of f_L=0.49+-0.05+-0.03, f_perp=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.

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The BABAR Collaboration, B. Aubert. 2007-05-12. Amplitude Analysis of the B+- ->phi K*(892)+- Decay. https://doi.org/10.1103/physrevlett.99.201802

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