Hayrapetyan, A.Makarenko, V.Tumasyan, A.Adam, W.Andrejkovic, J.W.Benato, L.Brandao Malbouisson, H.2026-02-102026-02-1020251029-8479https://doi.org/10.1007/JHEP12(2025)178https://hdl.handle.net/20.500.13091/12996A search is presented for a new scalar resonance, X, decaying to a standard model Higgs boson and another new scalar particle, Y, in the final state where the Higgs boson decays to a pair, while the Y particle decays to a pair of photons. The search is performed in the mass range 240–1000 GeV for the resonance X, and in the mass range 70–800 GeV for the particle Y, using proton-proton collision data collected by the CMS experiment at TeV, corresponding to an integrated luminosity of 132 fb-1. In general, the data are found to be compatible with the standard model expectation. Observed (expected) upper limits at 95% confidence level on the product of the production cross section and the relevant branching fraction are extracted for the X ? YH process, and are found to be within the range of 0.05–2.69 (0.08–1.94) fb, depending on m<inf>X</inf> and m<inf>Y</inf>. The most significant deviation from the background-only hypothesis is observed for X and Y masses of 300 and 77 GeV, respectively, with a local (global) significance of 3.33 (0.65) standard deviations. © The Author(s) 2025.eninfo:eu-repo/semantics/openAccessBeyond Standard ModelHadron-Hadron ScatteringHiggs PhysicsParticle And Resonance ProductionArticle10.1007/JHEP12(2025)1782-s2.0-105028105573