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Search for a massive scalar resonance decaying to a light scalar and a Higgs boson in the four b quarks final state with boosted topology

Abstract: We search for new massive scalar particles X and Y through the resonant process X->YH->bb¯bb¯, where H is the standard model Higgs boson. Data from CERN LHC proton-proton collisions are used, collected at a centre-of-mass energy of 13 TeV in 2016-2018 and corresponding to an integrated luminosity of 138fb-1. The search is performed in mass ranges of 0.9-4 TeV for X and 60-600 GeV for Y, where both Y and H are reconstructed as Lorentz-boosted single large-area jets. The results are interpreted in the context of the next-to-minimal supersymmetric standard model and also in an extension of the standard model with two additional singlet scalar fields. The 95% confidence level upper limits for the production cross section vary between 0.1 and 150 fb depending on the X and Y masses, and represent a significant improvement over results from previous searches.

 Fuente: Physics Letters B, 2023, 842, 137392

 Publisher: Elsevier

 Publication date: 01/07/2023

 Publication type: Article

 DOI: 10.1016/j.physletb.2022.137392

 ISSN: 0370-2693,1873-2445

 Publication Url: