Search for the decay $D_s^{+}\to \gamma e^{+}{\nu }_e$

BESIII Collaboration, M. Ablikim, M. N. Achasov +462

A search for the rare radiative leptonic decay $D_s^{+}\to \gamma e^{+}{\nu }_e$ is performed for the first time using electron-positron collision data corresponding to an integrated luminosity of…