UC Irvine

We present branching fraction and CP asymmetry measurements as well as angular studies of B→ÏÏK decays using 464×106 BB̄ events collected by the BABAR experiment. The branching fractions are measured in the ÏÏ invariant mass range below the ηc resonance (mÏÏ<2.85GeV). We find B(B+→ÏÏ K+)=(5.6±0.5±0.3)×10-6 and B(B0→ÏÏK0)=(4.5±0.8±0.3)×10-6, where the first uncertainty is statistical and the second systematic. The measured direct CP asymmetries for the B± decays are A CP=-0.10±0.08±0.02 below the ηc threshold (mÏÏ<2.85GeV) and ACP=0. 09±0.10±0.02 in the ηc resonance region (m ÏÏ in [2.94, 3.02] GeV). Angular distributions are consistent with JP=0- in the ηc resonance region and favor JP=0+ below the ηc resonance. © 2011 American Physical Society.