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Combination of searches for Higgs boson pair production in proton-proton collisions at $\sqrt{s} = $ 13 TeV

The CMS collaboration
Phys.Rev.Lett. 122 (2019) 121803, 2019

Abstract (data abstract)
This Letter describes a search for Higgs boson pair production using the combined results from four final states: \bbgg, \bbtt, \bbbb, and \bbvv, where V represents a $\PW$ or \PZ boson. The search is performed using data collected in 2016 by the CMS experiment from LHC proton-proton collisions at $\sqrt{s} = 13\TeV$, corresponding to an integrated luminosity of 35.9\fbinv.Limits are set on the Higgs boson pair production cross section. A 95\% confidence level observed (expected) upper limit on the nonresonant production cross section is set at 22.2\,(12.8) times the standard model value.A search for narrow resonances decaying to Higgs boson pairs is also performed in the mass range 250--3000\GeV. No evidence for a signal is observed, and upper limits are set on the resonance production cross section.

  • Figure 6

    Data from Figures 1 and 6

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    Expected and observed 95\% \CL exclusion limits on the HH production signal strength for the different channels and their combination.

  • Figure 2

    Data from Figure 2

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section as a function of the k_lambda parameter.

  • Figure 3

    Data from Figure 3

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    Expected and observed 95\% \CL exclusion limits on the production of a narrow, spin zero resonance (X) decaying into a...

  • Figure 4 all channels

    Data from Figure 4 and 5

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the different channels and their combination...

  • Figure 4 bbVV channel

    Data from Figure 4

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the bbVV channel and for each...

  • Figure 4 bbbb channel

    Data from Figure 4

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the bbbb channel and for each...

  • Figure 4 bbtt channel

    Data from Figure 4

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the bbtt channel and for each...

  • Figure 4 bbgg channel

    Data from Figure 4

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the bbgg channel and for each...

  • Figure 5

    Data from Figure 5

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    Expected and observed 95\% \CL exclusion limits on the HH production cross section for the combination of all channels and...

  • Figure 7

    Data from Figure 7, located in the additional material

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    Expected and observed 95\% \CL exclusion limits on the production of a narrow, spin two resonance (X) decaying into a...

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