Search for the decay of the Higgs boson into two nMSSM pseudo-scalar particles

The next to MSSM theory predicts the existence of a light pseudoscalar boson "a", and the decay of the Higgs boson into a pair of such particles. The search for this model in several final states relative to different decay modes of the "a" particle, is presented using 20.3~fb$^{-1}$ at the $\sqrt{s}=8$~TeV and 3.2~fb$^{-1}$ at the $\sqrt{s}=13$~TeV.