Strong decays of the $XYZ$ states

TL;DR

This paper investigates the decay patterns and production mechanisms of hidden beauty and charmonium-like states using spin rearrangement in the heavy quark limit, providing predictions for future experimental verification.

Contribution

It offers a comprehensive analysis of decay behaviors of exotic heavy meson states and extends formulas to charmonium-like states, aiding understanding of their internal structures.

Findings

Predicted decay ratios for hidden beauty states

Extended decay formulas to charmonium-like states

Guidance for future experimental measurements

Abstract

Through the spin rearrangement scheme in the heavy quark limit, we have performed a comprehensive investigation of the decay pattern and production mechanism of the hidden beauty di-meson states, which are either composed of a P-wave bottom meson and an S-wave bottom meson or two S-wave bottom mesons. We further extend the corresponding formula to discuss the decay behavior of some charmonium-like states by combining the experimental information with our numerical results. The typical ratios presented in this work can be measured by future experiments like BESIII, Belle, LHCb and the forthcoming BelleII, which shall provide important clues to the inner structures of the exotic states.