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We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$states of bottomonium at Belle. The $P$-wave states are reconstructed intransitions to the $\Upsilon(1S)$ with the emission of an $\omega$ meson. Thetransitions of the $n=2$ triplet states provide a unique laboratory in which tostudy nonrelativistic quantum chromodynamics, as the kinematic threshold forproduction of an $\omega$ and $\Upsilon(1S)$ lies between the $J=0$ and $J=1$states. A search for the $\chi_{bJ}(3P)$ states is also reported.

Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle