Higgs boson decays into gauge bosons: theoretical predictions in RNS

Abstract

We discuss recent results on the loop-induced decays $h\to Zγ$, $h\toγγ$, and $h\to gg$ in the Radiatively Natural Supersymmetry (RNS) framework. These processes are sensitive to contributions from particles beyond the Standard Model and provide complementary probes of supersymmetric effects. We evaluate the decay amplitudes and partial widths for parameter points consistent with a Higgs boson mass near the measured value of 125 GeV, and examine their dependence on the model parameters. Across the parameter space, the predicted $h\to Zγ$ width can reach about 7.5 keV, while the $h\toγγ$ and $h\to gg$ widths remain close to their Standard Model predictions. We compare the $h\to Zγ$ predictions with the available ATLAS and CMS measurements and discuss the prospects for distinguishing RNS from the Standard Model with improved experimental precision.