$h \rightarrow Z \gamma$ in the complex two Higgs doublet model

Understand

The latest LHC data confirmed the existence of a Higgs-like particle and made interesting measurements on its decays into $\gamma \gamma$, $Z Z^\ast$, $W W^\ast$, $\tau^+ \tau^-$, and $b \bar{b}$.

• It is expected that a decay into $Z \gamma$ might be measured at the next LHC round, for which there already exists an upper bound.
• The Higgs-like particle could be a mixture of scalar with a relatively large component of pseudoscalar.
• We compute the decay of such a mixed state into $Z \gamma$, and we study its properties in the context of the complex two Higgs doublet model, analysing the effect of the current measurements on the four versions of this model.