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
(2023) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 842 (2023)
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- We search for new massive scalar particles X and Y through the resonant process <math altimg="si1.svg"><mtext>X</mtext><mo stretchy="false">→</mo><mtext>Y</mtext><mtext>H</mtext><mo stretchy="false">→</mo><mi mathvariant="normal">b</mi><mover accent="true"><mrow><mi mathvariant="normal">b</mi></mrow><mrow><mo stretchy="false">¯</mo></mrow></mover><mi mathvariant="normal">b</mi><mover accent="true"><mrow><mi mathvariant="normal">b</mi></mrow><mrow><mo stretchy="false">¯</mo></mrow></mover></math>, 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 <math altimg="si2.svg"><mn>138</mn><mspace width="0.25em"/><mrow><mspace width="0.2em"/><msup><mrow><mtext>fb</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math>. 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.
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Benecke, A., Bethani, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Tran, T. T., Vischia, P., Wertz, S., CMS, & et al. (2023). 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. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 842. https://doi.org/10.1016/j.physletb.2022.137392 (Original work published 2023)