Could $Z_{b}(10610)$ be a $B^{*}\bar{B}$ molecular state?

TL;DR

This paper uses QCD sum rules to investigate whether the $Z_{b}(10610)$ resonance can be interpreted as a $B^{*}ar{B}$ molecular state, finding consistent mass predictions with experimental data.

Contribution

It provides a QCD sum rule calculation supporting the molecular state interpretation of $Z_{b}(10610)$, aligning theoretical mass with experimental observations.

Findings

Calculated mass $10.54 ext{ GeV}$ matches $Z_{b}(10610)$ mass

Supports molecular state hypothesis for $Z_{b}(10610)$

Consolidates Belle's experimental interpretation

Abstract

Assuming the newly observed structure $Z_{b}(10610)$ as a bottomonium-like molecular state $B^{*}\bar{B}$, we calculate its mass in the framework of QCD sum rules. The numerical result is $10.54\pm0.22 GeV$ for $B^{*}\bar{B}$, which coincide with the mass of $Z_{b}(10610)$. This consolidates the statement made by Belle Collaboration that the $Z_{b}(10610)$ resonance could be a $B^{*}\bar{B}$ molecular state.