Measurements of the ${\rm Y}(10860)$ and ${\rm Y}(11020)$ resonances via $\sigma (e^{+}{e}^{-}\to {\rm Y}(n\mathrm{S}){\pi }^{+}{\pi }^{-})$

Belle Collaboration, D. Santel, K. Kinoshita +158

We report new measurements of the total cross sections for $e^{+}{e}^{-}\to {\rm Y}(n\mathrm{S}){\pi }^{+}{\pi }^{-}$ ($n$ = 1, 2, 3) and $e^{+}{e}^{-}\to b\bar{b}$ from a high-luminosity fine scan of the region $\sq…