Two-photon decay 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.

5 pages, 4 figures

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• Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons
• Weak decays of heavy hadrons into dynamically generated resonances
• J/psi gamma and psi(2S) gamma decay modes of the X(3872)
• Decays of Zb(+) and Zb'(+) as hadronic molecules
• Structure and decays of hidden heavy pentaquarks
• Selected strong decays of $\eta (2225)$ and $\varphi (2170)$ as $\Lambda \bar{\Lambda }$ bound states
• Four-quark structure of Zc(3900), Z(4430) and Xb(5568) states
• Electroproduction of the Roper resonance on the proton: the role of the three-quark core and the molecular N-sigma component
• Strong three-body decays of Lambdac(2940)+
• Radiative decays of the Y(3940), Z(3930) and the X(4160) as dynamically generated resonances
• Excited Scalar and Pseudoscalar Mesons in the Extended Linear Sigma Model
• Could $Z_c(4025)$ be a $J^P=1^{+}$ $D^{\ast }\overline{D^{\ast }}$ molecular state?
• Meson production in two-photon interactions at energies available at CERN Large Hadron Collider
• Production of exotic charmonium in $\gamma \gamma$ interactions at hadronic colliders
• Strong decays of the hadronic molecule ${\Omega }^{\ast }(2012)$
• Charmonium production in ultra-peripheral heavy ion collisions with two-photon processes
• Decay of vector-vector resonances into $\gamma$ and a pseudoscalar meson
• Opportunities for studying $C$-even resonances at 3-12 GeV photon collider