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Table 1: Intervals of -significance used in the analysis. |
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Figure 6 (1): Illustration of the signal (SIG) and sideband (SB) regions in the | | versus < > plane. |
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Figure 6 (2): Distribution of simulated events in the 2b sample in the | | versus < > plane. The plot employs an arbitrary integrated luminosity. |
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Figure 6 (3): Distribution of simulated events in the 4b sample in the | | versus < > plane. The plot employs an arbitrary integrated luminosity. |
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Figure 6 (4): Distribution of simulated signal events in the 4b sample in the | | versus < > plane for a higgsino mass of 250 GeV. The plot employs an arbitrary integrated luminosity. |
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Figure 7: One-dimensional projections of (left) < > and (right) | | for simulated (top) and (bottom) signal events, with a higgsino mass of 250 GeV. For events (signal events), results are shown for the 2b and 4b samples (4b sample). The solid and dashed vertical lines indicate the boundaries of the signal (SIG) and sideband (SB) regions, respectively. The distributions are normalized to unit area. |
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Figure 2 (1): Distribution of reconstructed average mass < > for signal MC events in the 4b event sample for a 200 GeV higgsino. Separate distributions are shown for the cases where zero, one, or two of the generator-level Higgs bosons are reconstructed correctly. The distributions are shown after all signal-region requirements are applied except for that < >. The plot shows the results for all signal MC events. |
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Figure 2 (2): Distribution of reconstructed average mass < > for signal MC events in the 4b event sample for a 200 GeV higgsino. Separate distributions are shown for the cases where zero, one, or two of the generator-level Higgs bosons are reconstructed correctly. The distributions are shown after all signal-region requirements are applied except for that < >. The plot shows the results for events in which each of the four generator-level quarks from the Higgs boson decays is matched with a reconstructed jet with pT > 20 GeV (in other words, for events where a correct double-Higgs-boson reconstruction is possible in this analysis). |
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Figure 2 (3): Distribution of reconstructed average mass < > for signal MC events in the 4b event sample for a 400 GeV higgsino. Separate distributions are shown for the cases where zero, one, or two of the generator-level Higgs bosons are reconstructed correctly. The distributions are shown after all signal-region requirements are applied except for that < >. The plot shows the results for all signal MC events. |
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Figure 2 (4): Distribution of reconstructed average mass < > for signal MC events in the 4b event sample for a 400 GeV higgsino. Separate distributions are shown for the cases where zero, one, or two of the generator-level Higgs bosons are reconstructed correctly. The distributions are shown after all signal-region requirements are applied except for that < >. The plot shows the results for events in which each of the four generator-level quarks from the Higgs boson decays is matched with a reconstructed jet with pT > 20 GeV (in other words, for events where a correct double-Higgs-boson reconstruction is possible in this analysis). |
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Figure 3 (1): Distribution of | | in the 4b sample, after all signal-region requirements are applied except for that on the displayed variable, in comparison with simulations of background and signal events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] For the signal events, results are shown for higgsino masses of 200 and 400 GeV. The background distributions are stacked while the signal distributions are not. The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 3 (2): Distribution of in the 4b sample, after all signal-region requirements are applied except for that on the displayed variable, in comparison with simulations of background and signal events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] For the signal events, results are shown for higgsino masses of 200 and 400 GeV. The background distributions are stacked while the signal distributions are not. The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 3 (3): Distribution of < > in the 4b sample, after all signal-region requirements are applied except for that on the displayed variable, in comparison with simulations of background and signal events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] For the signal events, results are shown for higgsino masses of 200 and 400 GeV. The background distributions are stacked while the signal distributions are not. The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 3 (4): Distribution of -significance in the 4b sample, after all signal-region requirements are applied except for that on the displayed variable, in comparison with simulations of background and signal events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] For the signal events, results are shown for higgsino masses of 200 and 400 GeV. The background distributions are stacked while the signal distributions are not. The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 4 (1): Distribution of -significance in the -BG event sample in comparison with simulations of background events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 4 (2): Distribution of -significance in the QCD-BG background-enhanced event sample in comparison with simulations of background events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 5: Distribution of in the QCD-BG background-enhanced event sample in comparison with simulations of background events. [ (1l) and (2l) refer to events in which one or two top quarks decay semileptonically, respectively.] The hatched band indicates the statistical uncertainty of the total SM simulated prediction. |
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Figure 10 (1): Observed numbers of events in the 3b-SIG region, in bins of -significance , in comparison with the SM background estimates from the likelihood fit. The hatched bands show the total uncertainty of the background prediction, with statistical and systematic terms combined. The (unstacked) results for signal events, with a higgsino mass of either 250 or 400 GeV, are also shown. |
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Figure 10 (2): Observed numbers of events in the 4b-SIG region, in bins of -significance , in comparison with the SM background estimates from the likelihood fit. The hatched bands show the total uncertainty of the background prediction, with statistical and systematic terms combined. The (unstacked) results for signal events, with a higgsino mass of either 250 or 400 GeV, are also shown. |
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Table 4: Observed numbers of events and corresponding SM background estimates from the likelihood fit for the 3b-SIG and 4b-SIG regions. For the data, the first uncertainty is statistical and the second systematic. |
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Figure 11: Observed numbers of events in bins of -significance and corresponding prediction from SM simulation for the sideband SB (left) and signal SIG (right) regions, for the 2b (top), 3b (middle), and 4b (bottom) event samples. The hatched bands indicate the statistical uncertainty of the total SM simulated prediction. |
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Figure 12 (1): Observed and expected upper limits on the signal strength as a function of higgsino mass. The uncertainty associated with the theory cross section is 5%. The green and yellow bands indicate the one- and two-standard deviation intervals, respectively, for the expected result. A simple text file with these results can be found here. |
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Figure 12 (2): Observed and expected upper limits on the cross section as a function of higgsino mass. The uncertainty associated with the theory cross section is 5%. The green and yellow bands indicate the one- and two-standard deviation intervals, respectively, for the expected result. A simple text file with these results can be found here. |