Search for a new scalar resonance decaying to a Higgs boson and another new scalar particle in the final state with two bottom quarks and two photons in proton-proton collisions at √<i>s</i>=13 TeV


Hayrapetyan A., Makarenko V., Tumasyan A., Adam W., Andrejkovic J. W., Benato L., ...Daha Fazla

JOURNAL OF HIGH ENERGY PHYSICS, cilt.2025, sa.12, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2025 Sayı: 12
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1007/jhep12(2025)178
  • Dergi Adı: JOURNAL OF HIGH ENERGY PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC, MathSciNet, zbMATH, Directory of Open Access Journals, Nature Index
  • İstanbul Üniversitesi Adresli: Evet

Özet

A 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.