Amplitude Analysis of the B+- ->phi K*(892)+- Decay
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.
Keywords
Cite
@article{arxiv.0705.1798,
title = {Amplitude Analysis of the B+- ->phi K*(892)+- Decay},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:0705.1798},
year = {2010}
}
Comments
7 pages, 8 postscript figures, submitted to Phys. Rev. Lett