Prospects for detection ofΥ(1D)→Υ(1S)ππviaΥ(3S)→Υ(1D)+X

At least one state in the first family of D-wave $b\overline{b}$ quarkonium levels has been discovered near the predicted mass of $10.16\mathrm{GeV}{/c}^2.$ This state is probably the one with $J=2.\mathrm{}$ This state and the ones with $J=1\mathrm{}$ and $J=3\mathrm{}$ may contribute a detectable amount to the decay ${\rm Y}\mathrm{}\left(1D\right)\mathrm{}\to {\rm Y}\mathrm{}\left(1S\right)\mathrm{}\pi \pi ,$ depending on the partial widths for these decays for which predictions vary considerably. The prospects for detection of the chain ${\rm Y}\mathrm{}\left(3S\right)\mathrm{}\to {\rm Y}\mathrm{}\left(1D\right)+\overrightarrow{X}{\rm Y}\pi \pi +X$ are discussed.