Possible huge enhancement in the radiative decay of the weal W boson into the charmed $D_s$ meson

Y. Y. Keum, X. Y. Pham

We point out that the rare decay mode $W^{\pm }\to \gamma +D_s^{\pm }$ could be spectacularly enhanced, with a branching ratio around $10^{-6}$ which is three order of magnit…