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 ; parity-odd transverse f amplitudes, branching fraction, strong phases, ; six parameters sensitive to CP violation. We use the dependence on the Kπ invariant mass of the interference between the JP=1- ; 0+ Kπ components to resolve the discrete ambiguity in the determination of the strong ; weak phases. Our measurements of fL=0.49±0.05±0. 03, f=0.21±0.05±0.02, ; the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source. © 2007 The American Physical Society.

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

Palano, A.;Pompili, A.;PAPPAGALLO, MARCO IGNAZIO;
2007-01-01

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 ; parity-odd transverse f amplitudes, branching fraction, strong phases, ; six parameters sensitive to CP violation. We use the dependence on the Kπ invariant mass of the interference between the JP=1- ; 0+ Kπ components to resolve the discrete ambiguity in the determination of the strong ; weak phases. Our measurements of fL=0.49±0.05±0. 03, f=0.21±0.05±0.02, ; the strong phases point to the presence of a substantial helicity-plus amplitude from a presently unknown source. © 2007 The American Physical Society.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/194829
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