Strong and radiative decays of heavy mesons in a covariant model
  In this paper, we investigate symmetry breaking effects in strong and radiative decays of heavy mesons. We study $1/m_Q$ corrections within the heavy quark effective theory. These effects are studied in a covariant model for heavy mesons. The numerical results are consistent with the experimental data and some other theoretical calculations. These provide a vote of confidence for the validity of this covariant model. 
Chi-Yee Cheung, Chien-Wen Hwang
hep-ph