Higgs decay into a lepton pair and a photon: a roadmap to $\mathbf{H}\to \mathbf{Z}\gamma$ discovery and probes of new physics

Aliaksei Kachanovich, Ulrich Nierste, Ivan Nišandžić

The decay $H\to {\ell }^{+}{\ell }^{-}\gamma$, $\ell =e,\mu$, receives contributions from $H\to Z[\to {\ell }^{+}{\ell }^{-}]\gamma$ and a non-resonant contribution, both of which are loop-induced. We describe h…