Title: Accumulating Evidence for New Higgs Boson from Associated Di-Photon Searches
Abstract: The associated production of Higgs bosons at the electroweak scale offers an interesting window into new physics. This type of search benefits from a low SM background and enhanced sensitivity to new physics. Recently, statistically significant excesses have been observed by ATLAS in associated di-photon production (γγ + X) at around 152 GeV invariant mass of di-photons in the sidebands of SM Higgs analyses, which are compatible with associated production mechanisms for new Higgs bosons, such as Drell-Yan processes. In this context, I will discuss how such excesses can be explained within different new physics scenarios, such as a real Higgs triplet and the general aligned 2HDM.