Search for resonant B±→K±h→K±γγ decays at Belle

We report measurements and searches for resonant B±→K±h→K±γγ decays where h is a η, η', ηc, ηc(2S), χc0, χc2, J/ψ meson or the X(3872) particle. The results are based on a data sample containing 535 million BB-bar pairs collected with the Belle detector at the KEKB e+e- asymmetric-energy collider operating at the Y(4S) resonance. Signals are observed in the modes with η and η', and we obtain evidence for a signal in the mode with ηc. We measure B(B±→K±η→K±γγ)=(0.87-0.15+0.16(stat)-0.07+0.10(syst))x10-6, B(B±→K±η'→K±γγ)=(1.40-0.15+0.16(stat)-0.12+0.15(syst))x10-6 and B(B±→K±ηc→K±γγ)=(0.22-0.07+0.09(stat)-0.02+0.04(syst))x10-6. We set upper limits on the branching fractions of the other modes