Effect of anomalous HHH and ZZHH couplings on the decay width of H→νeν̄eνμν̄μ

Despite the discovery of the Higgs boson, the Higgs sector of the standard model is still not fully established. In particular, the self couplings of the Higgs boson, and its couplings with gauge bosons, are still to be fully determined. We consider electroweak corrections to the process H→ νₑν̄ₑν_μν̄_μ. The corrections depend on the $HHH$ and $ZZHH$ couplings. We investigate this dependence in κ-framework. We find that the width depends on $HHH$ coupling significantly. The dependence on $ZZHH$ coupling is only marginal. We also discuss the dependence on $ZZWW$ coupling.