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| CMS-PAS-HIG-16-023 | ||
| Search for high mass Higgs to WW with fully leptonic decays using 2015 data | ||
| CMS Collaboration | ||
| August 2016 | ||
| Abstract: A search for a heavy Higgs boson in the $\mathrm{ H \rightarrow WW \rightarrow \ell\nu\ell'\nu'}$ decay channel is reported. The search is based upon proton-proton collision data samples corresponding to an integrated luminosity of up to 2.3 fb$^{-1}$ at $\sqrt{s} =$ 13 TeV, recorded by the CMS experiment at the LHC in 2015. The limits are interpreted as constraints on the production of a heavy scalar in the electroweak singlet model. | ||
| Links: CDS record (PDF) ; inSPIRE record ; CADI line (restricted) ; | ||
| Figures | |
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Figure 1:
Mass spectrum for a 300 GeV resonance mass and effect of the various interference terms. |
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Figure 2-a:
${m_{\mathrm {T,i}}}$ distributions in the signal region for 0 jets, 1 jet and VBF categories. Data points correspond to the 2015 data set. |
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Figure 2-b:
${m_{\mathrm {T,i}}}$ distributions in the signal region for 0 jets, 1 jet and VBF categories. Data points correspond to the 2015 data set. |
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Figure 2-c:
${m_{\mathrm {T,i}}}$ distributions in the signal region for 0 jets, 1 jet and VBF categories. Data points correspond to the 2015 data set. |
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Figure 3-a:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in top enriched control region. Scale factors estimated from data are not applied in the plots. |
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Figure 3-b:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in top enriched control region. Scale factors estimated from data are not applied in the plots. |
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Figure 3-c:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in top enriched control region. Scale factors estimated from data are not applied in the plots. |
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Figure 4-a:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in the same-charge dilepton control region. The last bin of the histograms includes overflows. |
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Figure 4-b:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in the same-charge dilepton control region. The last bin of the histograms includes overflows. |
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Figure 4-c:
Distributions of ${m_{\mathrm {T,i}}}$ for events with 0 jet (a), 1 jet (b) and 2 jets (c) in the same-charge dilepton control region. The last bin of the histograms includes overflows. |
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Figure 5-a:
Expected and observed exclusion limits at 95% CL on the sum of ggH and VBF cross sections times branching fraction for the combination of the three jet categories as a function of the resonance mass. The black dotted line corresponds to the central value while the yellow and green bands represent the $\pm$1$ \sigma $ and $\pm$2$ \sigma $ uncertainties respectively. Limits are shown for four hypothesis of the signal width. |
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Figure 5-b:
Expected and observed exclusion limits at 95% CL on the sum of ggH and VBF cross sections times branching fraction for the combination of the three jet categories as a function of the resonance mass. The black dotted line corresponds to the central value while the yellow and green bands represent the $\pm$1$ \sigma $ and $\pm$2$ \sigma $ uncertainties respectively. Limits are shown for four hypothesis of the signal width. |
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Figure 5-c:
Expected and observed exclusion limits at 95% CL on the sum of ggH and VBF cross sections times branching fraction for the combination of the three jet categories as a function of the resonance mass. The black dotted line corresponds to the central value while the yellow and green bands represent the $\pm$1$ \sigma $ and $\pm$2$ \sigma $ uncertainties respectively. Limits are shown for four hypothesis of the signal width. |
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Figure 5-d:
Expected and observed exclusion limits at 95% CL on the sum of ggH and VBF cross sections times branching fraction for the combination of the three jet categories as a function of the resonance mass. The black dotted line corresponds to the central value while the yellow and green bands represent the $\pm$1$ \sigma $ and $\pm$2$ \sigma $ uncertainties respectively. Limits are shown for four hypothesis of the signal width. |
| Tables | |
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Table 1:
Observed $p$-value and corresponding significance (set to 0 in case of underfluctuations of the observed number of events) for the combination of the three jet categories for different resonance masses. Different values of the signal width are shown. |
| Summary |
| A search for a heavy Higgs boson in the $\mathrm{ H \rightarrow WW \rightarrow \ell\nu\ell'\nu' }$ decay channel has been performed, using a data sample corresponding to an integrated luminosity of 2.3 fb$^{-1}$ at $\sqrt{s} =$ 13 TeV of proton-proton collisions recorded by the CMS experiment at the LHC during 2015. The search has been carried out in the 0-jets, 1-jet and VBF categories in order to increase the signal sensitivity to different production mechanisms and maximize the exclusion limits. The exclusion limits on the cross section times branching ratio to $\mathrm{ WW \to2\ell2\nu }$ have been reported for different values of the resonance width and no significant excess with respect to the SM background expectation has been observed. |
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