Abstract: | We report a search for the rare decays B -> h(*) nu nubar, where h(*) stands
for K+, Ks0, K*+, K*0, pi+, pi0, rho+, rho0 and phi. The results are obtained
from a 711 fb-1 data sample that contains 772 million BB pairs collected at the
Y(4S) resonance with the Belle detector at the KEKB e+e- collider. We search
for signal candidates by fully reconstructing a hadronic decay of the
accompanying B meson and requiring a single h(*) meson left on the signal side.
No significant signal is observed and we set upper limits on the branching
fractions at 90% confidence level. The measurements of B+ -> K*+ nu nubar, B+
-> pi+ nu nubar, B0 -> pi0 nu nubar and B0 -> rho^0 nu nubar provide the
world’s currently most restrictive limits. |