Abstract
We present results on decays using annihilation data collected with the BABAR detector at the resonance. The detector is located at the PEP-II asymmetric-energy storage ring facility at the Stanford Linear Accelerator Center. Using approximately pairs, we measure the decay amplitudes for the flavor eigenmodes and observe strong-phase differences indicative of final-state interactions with a significance of 7.6 standard deviations. We use the interference between the -wave and -wave amplitudes in the region of the to resolve the ambiguity in the determination of these strong phases. We then perform an ambiguity-free measurement of using the angular and time-dependent asymmetry in decays. With fixed at its measured value and treated as an independent parameter, we find , determining the sign of to be positive at 86% C.L.
10 More- Received 2 November 2004
DOI:https://doi.org/10.1103/PhysRevD.71.032005
©2005 American Physical Society