We report a study of the B meson decays, B+→J/ψϕK+, B0→J/ψϕKS0, B0→J/ψϕ, B0→J/ψη, and B0→J/ψη′ using 56×106 BB̅ events collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We measure the branching fractions B(B+→J/ψϕK+)=(4.4±1.4(stat)±0.5(syst))×10-5 and B(B0→J/ψϕKS0)=(5.1±1.9(stat)±0.5(syst))×10-5, and set upper limits at 90% confidence level for the branching fractions B(B0→J/ψϕ)<9.2×10-6, B(B0→J/ψη)<2.7×10-5, and B(B0→J/ψη′)<6.3×10-5.
Rare B Decays into States Containing a J/ψ Meson and a Meson with ss¯ Quark Content
LO VETERE, MAURIZIO;MONGE, MARIA ROBERTA;PATRIGNANI, CLAUDIA;TOSI, SILVANO;
2003-01-01
Abstract
We report a study of the B meson decays, B+→J/ψϕK+, B0→J/ψϕKS0, B0→J/ψϕ, B0→J/ψη, and B0→J/ψη′ using 56×106 BB̅ events collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We measure the branching fractions B(B+→J/ψϕK+)=(4.4±1.4(stat)±0.5(syst))×10-5 and B(B0→J/ψϕKS0)=(5.1±1.9(stat)±0.5(syst))×10-5, and set upper limits at 90% confidence level for the branching fractions B(B0→J/ψϕ)<9.2×10-6, B(B0→J/ψη)<2.7×10-5, and B(B0→J/ψη′)<6.3×10-5.
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