Radiative decays of $1^{++}$ heavy mesons in the covariant light-front approach

Abstract

We calculate the predicted width for the radiative decay of a $1^{++}$ heavy meson via the channel $1^{++}\to 1^{--}+\gamma$ in the covariant light-front quark model. Specifically, we compute the decay widths for ${\chi }_{c1}(1P)\to J/\psi +\gamma$ and ${\chi }_{b1}(nP)\to {\rm Y}(n^{\prime }S)+\gamma$. The results are compared with experimental data and with predictions from calculations based on nonrelativistic models and their extensions to include relativistic effects.

Comments: 10 pages, Latex