Can contribution from magnetic-penguin operator with real photon to $B_s\to {\ell }^{+}{\ell }^{-}\gamma$ in the standard model be neglected?

Wenyu Wang, Zhao-Hua Xiong, Si-Hong Zhou

Using the $B_s$ meson wave function extracted from non-leptonic $B_s$ decays, we reevaluate the rare decays $B_s\to {\ell }^{+}{\ell }^{-}\gamma ,(\ell =e,\mu )$ in the standard model, including two…