Effect of anomalous HHH coupling on the decay H → Z Z* → 4 charged leptons

We have studied the effect of anomalous HHH coupling in the κ -framework for the process H → Z Z * → 4 charged leptons by computing the electroweak corrections to it. The results for the HHH coupling scaling are gauge invariant. We have computed the results for H → e + e − μ + μ − and H → e + e − e + e − processes. The corrections for both processes depend on the input parameter scheme. In the G F scheme, the electroweak corrections are about 1.26% for the H → e + e − μ + μ − and about 0.25% for the H → e + e − e + e − process. However changing the κ HHH from 4 to − 6 , the corrections vary from less than 1% to about − 12 % . We have plotted a number of kinematic distributions. The corrections over most of the phase space regions are similar. These large corrections can be used to put a bound on the HHH coupling. This can help in determining the structure of the Higgs potential.