Hayrapetyan, A.Makarenko, V.Tumasyan, A.Adam, W.Andrejkovic, J. W.Benato, L.Bergauer, T.2026-04-252026-04-2520251029-8479https://doi.org/10.1007/JHEP12(2025)178https://hdl.handle.net/11486/8181A 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 b (b) over bar 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 root s = 13 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(X) and m(Y). 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.eninfo:eu-repo/semantics/openAccessBeyond Standard ModelHadron-Hadron ScatteringHiggs PhysicsParticle and Resonance ProductionArticle1210.1007/JHEP12(2025)1782-s2.0-105028105573Q1WOS:001675428300001Q10000-0001-9570-92550000-0002-8087-31990000-0002-2633-46960000-0002-1058-80930000-0002-2583-59820000-0003-1124-84500000-0003-1124-8450