Explaining the anomalous $Υ(5S)\to χ_{bJ}ω$ decays through the hadronic loop effect

Abstract

In this work, we carry out the study on $Υ(5S)\to χ_{bJ}ω$ ($J=0,1,2$) by considering the hadronic loop mechanism. Our results show that the Belle's preliminary data of the branching ratios for $Υ(5S)\to χ_{bJ}ω$ can be well reproduced in our calculation with a common parameter range, which reflects the similarity among these $Υ(5S)\to χ_{bJ}ω$ decays of concern.

6 pages, 3 figures, 1 table. More discussions and explanations added. Accepted by Phys. Rev. D