Explaining the anomalous $\Upsilon(5S)\to \chi_{bJ}\omega$ decays through the hadronic loop effect

TL;DR

This paper investigates the anomalous decay rates of $S$ to $_{bJ}$ using the hadronic loop mechanism, successfully explaining experimental data and revealing underlying similarities among these decays.

Contribution

It introduces a hadronic loop model to explain the decay patterns of $S$ to $_{bJ}$, aligning theoretical predictions with experimental observations.

Findings

The model reproduces Belle's preliminary data on branching ratios.

The decay processes share a common parameter range, indicating underlying similarity.

The hadronic loop effect is significant in explaining these decay anomalies.

Abstract

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