Speaker
Description
With LHC Run 3 in progress, the 125GeV Higgs boson couplings are being examined in greater detail, while testing for additional scalars. Multi-Higgs frameworks allow Higgs couplings to significantly deviate from Standard Model values, enabling indirect probes of extra scalars. We consider the possibility of large pseudoscalar Yukawa couplings in the softly-broken three-Higgs doublet model with CP violating coefficients. We present a parameterization of the rotations leading to the mass eigenstates and describe all the current constraints. To explore the parameter space of the model, we employ a Machine Learning algorithm that significantly enhances sampling efficiency. This method leverages an Evolutionary Strategy to improve convergence towards valid regions with an additional Novelty Reward mechanism. We show the potential of the new techniques, applicable to any beyond the Standard Model scenario.