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

The CMS collaboration
JHEP 04 (2019) 112, 2019.

Abstract (data abstract)
Results of a search for nonresonant production of Higgs boson pairs, with each Higgs boson decaying to a bb 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 bb 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.

  • Figure 9 (Tables 5-6)

    Data from Figure 9, located on page 19 (equivalent to Tables 5-6, pages 16 and 18)


    The observed and expected upper limits at 95% CL on the $\sigma$ (pp $\Rightarrow$ HH $\Rightarrow$ bbbb) cross section for...

  • Figure 10

    Data from Figure 10, located on page 19


    95% CL cross section limits on $\sigma$ (pp $\Rightarrow$ HH $\Rightarrow$ bbbb) for values of $\kappa_\lambda$ in the [-20,20] range,...

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