The Standard Model (SM) of particle physics predicted the existence of the Higgs boson, discovered at LHC in 2012. Since then its properties have been extensively studied. Recent results from the LHC CMS collaboration point to the possible existence of a new particle with mass of 95 GeV, observed through its decays to two photons. 

Several models have been proposed to explain this hypothetical new particle, such as versions of the 2-Higgs doublet model (2HDM). In this work the students will compute the cross sections of production and decay of this particle H₉₅ in other models, such as the 3HDM and the doublet+triplet model, and compare them to LHC results for           gg → H₉₅ → γγ to verify whether such models can provide explanations for these observations. Further, what would be the masses of the remaining scalars predicted in such models to account for the suggested H₉₅ properties? This is an advanced research topic, which may result in a scientific publication.