Search for $h_b(2P)\to {\hat{I}}^3\ddot{I}{‡}_{bJ}(1P)$ at $\sqrt{s}=10.860$ GeV

Belle Collaboration, A. Boschetti, R. Mussa +140

In the bottomonium sector, the hindered magnetic dipole (M1) transitions between P-wave states $h_b(2P)\to \ddot{I}{‡}_{bJ}(1P){\hat{I}}^3$, $J=0,1,2$, are expected to be severely…