Search for the decay $B_s^0\to \hat{I}{\cdot }^{\prime }{K}_S^0$

Abstract

We report the results of the first search for the decay $B_s^0\to \hat{I}{\cdot }^{\prime }{K}_S^0$ using $121.4{\mathrm{fb}}^{-1}$ of data collected at the $\hat{I}\yen (5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. We observe no signal and set a 90\% confidence-level upper limit of $8.16\times 10^{-6}$ on the $B_s^0\to \hat{I}{\cdot }^{\prime }{K}_S^0$ branching fraction.

8 pages, 2 figures, submitted to Physical Review D (Letters)