Implications of a nonvanishing $Z\gamma \gamma$ vertex on the $H\to \gamma \gamma \gamma$ decay

A. Cordero-Cid, M. A. López-Osorio, E. Martínez-Pascual +1

The $Z\to \gamma \gamma$ and $H\to \gamma \gamma \gamma$ decays are strictly forbidden in the Standard Model, but they can be induced by theories that violate Lorentz symmetry or the CPT theorem. By assuming…