Radiative M1-decays of heavy-light mesons in the relativistic quark model

Abstract

Radiative magnetic dipole decays of heavy-light vector mesons into pseudoscalar mesons V -> P\gamma are considered within the relativistic quark model. The light quark is treated completely relativistically, while for the heavy quark the 1/m_Q expansion is used. It is found that relativistic effects result in a significant reduction of decay rates. Comparison with previous predictions and recent experimental data is presented.

Comments: 11 pages, 2 figures, few comments added, version to appear in Phys. Lett. B