Search for transitions from $\hat{I}\yen (4S)$ and $\hat{I}\yen (5S)$ to $\hat{I}{\cdot }_b(1S)$ and $\hat{I}{\cdot }_b(2S)$ with emission of an $\ddot{I}‰$ meson

Abstract

Using data collected in the Belle experiment at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider we search for transitions $\hat{I}\yen (4S)\to \hat{I}{\cdot }_b(1S)\ddot{I}‰$, $\hat{I}\yen (5S)\to \hat{I}{\cdot }_b(1S)\ddot{I}‰$ and $\hat{I}\yen (5S)\to \hat{I}{\cdot }_b(2S)\ddot{I}‰$. No significant signals are observed and we set 90\% confidence level upper limits on the corresponding visible cross sections: $0.2\text{pb},0.4\text{pb}$ and $1.9\text{pb}$, respectively.

7 pages, 5 figures