Effect of anomalous HHH couplings on the decay width of H --> 4l

by Dr Biswajit Das

Tuesday 10 Dec 2024, 13:00 → 14:00 Europe/Brussels

E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

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 processes H --> Z Z*--> 4l. The corrections depend  
on the HHH coupling. We investigate this dependence in the  
kappa-framework without violating gauge invariance. We find that the  
width depends on coupling significantly.