Prospects for detection of $Υ(1D) \to Υ(1S) ππ$ via $Υ(3S) \to Υ(1D) + X$
Abstract
Description
At least one state in the first family of D-wave $b \bar b$ quarkonium levels has been discovered near the predicted mass of 10.16 GeV/$c^2$. This state is probably the one with J=2. This state and the ones with J=1 and J=3 may contribute a detectable amount to the decay $Υ(1D) \to Υ(1S) ππ$, depending on the partial widths for these decays for which predictions vary considerably. The prospects for detection of the chain $Υ(3S) \to Υ(1D) + X \to Υππ+ X$ are discussed.
4 pages, LaTeX, 1 figure, to be published in Phys. Rev. D, comment added after Eq. (2)
4 pages, LaTeX, 1 figure, to be published in Phys. Rev. D, comment added after Eq. (2)