Energy scan of the cross sections and evidence for decays into charged bottomoniumlike states

反応断面積のエネルギー依存性と荷電ボトモニウム様状態に崩壊するの証拠

Mizuk, R.*; 谷田 聖   ; Belle Collaboration*; 他166名*

Mizuk, R.*; Tanida, Kiyoshi; Belle Collaboration*; 166 of others*

Using data collected with the Belle detector at the KEKB asymmetric-energy collider, we measure the energy dependence of the cross sections from thresholds up to 11.02 GeV. We find clear and peaks with little or no continuum contribution. We study the resonant substructure of the transitions and find evidence that they proceed entirely via the intermediate isovector states and . The relative fraction of these states is loosely constrained by the current data: The hypothesis that only is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only is produced is not excluded at a significant level.