We present a measurement of the decay amplitudes in B → J/ΨK* channels using 20.7 fb−1 of data collected at the ϒ(4S) resonance with the BABAR detector at PEP-II. We measure a P-wave fraction R⊥=(16.0°3.2°1.4)% and a longitudinal polarization fraction (59.7°2.8°2.4)%. The measurement of a relative phase that is neither 0 nor π, ψ‖ = 2.50°0.20°0.08 radians, favors a departure from the factorization hypothesis. Although the decay B → J/ΨKπ proceeds mainly via K*(892), there is also evidence for K* 2(1430) and KπS-wave contributions.
ASJC Scopus subject areas
- Physics and Astronomy(all)