Covariant light-front approach for heavy quarkonium: decay constants, P \to γγand V \to P γ

Hwang, Chien-Wen; Wei, Zheng-Tao

Covariant light-front approach for heavy quarkonium: decay constants, P \to γγand V \to P γ

Authors

Description

The light-front approach is a relativistic quark model and offers many insights to the internal structures of the hadronic bound states. In this study, we apply the covariant light-front approach to ground-state heavy quarkonium. The pesudoscalar and vector meson decay constants are discussed. We present a detailed study of two-photon annihilation P \to γγand magnetic dipole transition V \to P γprocesses. The numerical predictions of the light-front approach are consistent with the experimental data and those in other approaches. The relations of the light-front approach with the other methods are discussed in brief.
18 pages, 5 figures, typos corrected, references added. Accepted for pubblication in J. Phys. G