Search for nonresonant Higgs boson pair production in the $\mathrm{b\overline{b}b\overline{b}}$ final state at $\sqrt{s} =$ 13 TeV

Bakhshiansohi, Hamed;Bondu, Olivier;Brochet, Sébastien;Bruno, Giacomo;CMS Collaboration;et.al.
(2019) Journal of High Energy Physics — Vol. 1904, p. 112 (2019)

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Authors
  • Bakhshiansohi, HamedUCLouvain
    Author
  • Bondu, OlivierUCLouvain
    Author
  • Brochet, SébastienUCLouvain
    Author
  • Author
  • Caputo, ClaudioUCLouvain
    Author
  • David, PieterUCLouvain
    Author
  • Author
  • Delcourt, MartinUCLouvain
    Author
  • Author
  • Krintiras, GeorgiosUCLouvain
    Author
  • Author
  • Magitteri, AlessioUCLouvain
    Author
  • Piotrzkowski, KrzysztofUCLouvain
    Author
  • Saggio, AlessiaUCLouvain
    Author
  • Vidal Marono, MiguelUCLouvain
    Author
  • Wertz, SébastienUCLouvain
    Author
  • Zobec, JozeUCLouvain
    Author
  • CMS Collaboration
    Author
  • et. al.
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Abstract
Results of a search for nonresonant production of Higgs boson pairs, with each Higgs boson decaying to a $\mathrm{b\overline{b}}$ pair are presented. This search uses data from proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb$^{-1}$, collected by the CMS detector at the LHC. No signal is observed, and a 95% confidence level upper limit of 847 fb is set on the cross section for standard model nonresonant Higgs boson pair production times the squared branching fraction of the Higgs boson decay to a $\mathrm{b\overline{b}}$ pair. The same signature is studied, and upper limits are set, in the context of models of physics beyond the standard model that predict modified couplings of the Higgs boson.
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Citations

Bakhshiansohi, H., Bondu, O., Brochet, S., Bruno, G., Caputo, C., David, P., Delaere, C., Delcourt, M., Giammanco, A., Krintiras, G., Lemaitre, V., Magitteri, A., Piotrzkowski, K., Saggio, A., Vidal Marono, M., Wertz, S., Zobec, J., CMS Collaboration, & et al. (2019). Search for nonresonant Higgs boson pair production in the $\mathrm{b\overline{b}b\overline{b}}$ final state at $\sqrt{s} =$ 13 TeV. Journal of High Energy Physics, 1904, 112. https://doi.org/10.1007/JHEP04(2019)112 (Original work published 2019)