Two-photon decay of heavy hadron molecules

TL;DR

This paper investigates the two-photon decay widths of heavy hadron molecules, emphasizing how constituent meson masses, binding energy, and finite size effects influence decay predictions.

Contribution

It provides a detailed analysis of how the structure and binding characteristics of heavy hadron molecules affect their two-photon decay widths, including finite size effects.

Findings

Decay width depends on constituent meson masses and binding energy.

Finite size effects significantly alter decay width predictions.

The study offers insights into the structure of heavy hadron molecules.

Abstract

We discuss the two-photon decay width of heavy hadron molecules and study the dependence on the constituent meson masses and on the binding energy. In addition finite size effects due to the extended structure of the bound state are shown to have a strong influence on the predictions for this decay width.