Weak radiative decay width B < sup > ± < /sup > → K* < sup > ± < /sup > γ in COQM including long-range contributions

Abstract

The width of the weak radiative decay B± → K*±γ is calculated using the covariant oscillator quark model to estimate the quark confined effects. We improve our previous calculation, which includes only a short distance contribution, by adding a long distance contribution, and obtain the branching ratio as 4.595 × 10-5. The magnitude of the direct CP asymmetric decay width is also estimated.