Combined limit on the production of a light gauge boson decaying into ${\mu }^{+}{\mu }^{-}$ and ${\pi }^{+}{\pi }^{-}$

2 Collaboration, A. Anastasi, D. Babusci +56

We searched for the ${\mu }^{+}{\mu }^{-}$ decay of a light vector gauge boson, also known as dark photon, in the $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}{\gamma }_{\mathrm{ISR}}$ process by means of the Initial State Radiatio…