Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-05-25
Phys.Rev.D84:012001,2011
Physics
High Energy Physics
High Energy Physics - Experiment
14 pages, 14 postscript figures, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.84.012001
We present branching fraction and CP asymmetry measurements as well as angular studies of B to phi phi K decays using 464 x 10^6 BBbar events collected by the BaBar experiment. The branching fractions are measured in the phi phi invariant mass range below the eta_c resonance (m_phiphi <2.85 GeV). We find B(B+ to phi phi K+) = (5.6 +/- 0.5 +/- 0.3) x 10^-6 and B(B0 to phi phi K0) = (4.5 +/- 0.8 +/- 0.3) x 10^-6, where the first uncertaintiy 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 eta_c threshold and A_CP = 0.09 +/- 0.10 +?- 0.02 in the eta_c resonance region (m_phiphi in [2.94,3.02] GeV). Angular distributions are consistent with J^P = 0- in the eta_c resonance region and favor J^P = 0+ below the eta_c resonance.
"The BABAR Collaboration
Lees Jean-Pierre
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