CMS-PAS-FTR-18-017 | ||
Projection of the Run 2 MSSM H→ττ limits for the High-Luminosity LHC | ||
CMS Collaboration | ||
December 2018 | ||
Abstract: A search for heavy Higgs bosons decaying to τ leptons was previously performed using data collected during Run 2 of the LHC, based on a data set of proton-proton collisions at √s= 13 TeV corresponding to an integrated luminosity of 35.9 fb−1. A projection of these results to a High-Luminosity LHC data set of 3000 fb−1 is described. For neutral Higgs boson masses above 1 TeV, an improvement by about one order of magnitude is expected in the 95% confidence level upper limits on the cross section. For the benchmark scenario mmod+h of the minimal supersymmetric extension of the standard model, the expected lower limit on the mass of a heavy Higgs boson is extended from 1.25 to 2 TeV for tanβ= 36. | ||
Links: CDS record (PDF) ; inSPIRE record ; CADI line (restricted) ; |
Figures | |
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Figure 1:
Projection of expected model independent 95% CL upper limits based on 2016 CMS data [10] for ggH and bbH production with subsequent H→ττ decays, with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]. |
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Figure 1-a:
Projection of expected model independent 95% CL upper limits based on 2016 CMS data [10] for ggH production with subsequent H→ττ decays, with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]. |
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Figure 1-b:
Projection of expected model independent 95% CL upper limits based on 2016 CMS data [10] for bbH production with subsequent H→ττ decays, with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]. |
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Figure 2:
Projection of expected model-independent limits based on 2016 CMS data [10] for ggH and bbH production with subsequent H→ττ decays, comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 2-a:
Projection of expected model-independent limits based on 2016 CMS data [10] for ggH production with subsequent H→ττ decays, comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 2-b:
Projection of expected model-independent limits based on 2016 CMS data [10] for bbH production with subsequent H→ττ decays, comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 3:
Projection of expected model-independent limits based on 2016 CMS data [10] for a simultaneous fit to the ggH and bbH production cross sections with subsequent H→ττ decays, for an integrated luminosity of 3000 fb−1 and with YR18 systematic uncertainties. |
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Figure 3-a:
Projection of expected model-independent limits based on 2016 CMS data [10] for a simultaneous fit to the ggϕ and bbϕ (mϕ= 25 GeV) production cross sections with subsequent ϕ→ττ decays, for an integrated luminosity of 3000 fb−1 and with YR18 systematic uncertainties. |
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Figure 3-b:
Projection of expected model-independent limits based on 2016 CMS data [10] for a simultaneous fit to the ggϕ and bbϕ (mϕ= 400 GeV) production cross sections with subsequent ϕ→ττ decays, for an integrated luminosity of 3000 fb−1 and with YR18 systematic uncertainties. |
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Figure 3-c:
Projection of expected model-independent limits based on 2016 CMS data [10] for a simultaneous fit to the ggϕ and bbϕ (mϕ= 700 GeV) production cross sections with subsequent ϕ→ττ decays, for an integrated luminosity of 3000 fb−1 and with YR18 systematic uncertainties. |
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Figure 3-d:
Projection of expected model-independent limits based on 2016 CMS data [10] for a simultaneous fit to the ggϕ and bbϕ (mϕ= 3200 GeV) production cross sections with subsequent ϕ→ττ decays, for an integrated luminosity of 3000 fb−1 and with YR18 systematic uncertainties. |
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Figure 4:
Projection of expected MSSM H→ττ 95% CL upper limits based on 2016 data [10] for different benchmark scenarios, with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]; for the tau-phobic scenario, it is a new interpretation of the information given in this reference. |
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Figure 4-a:
Projection of expected MSSM H→ττ 95% CL upper limits based on 2016 data [10] for the mmod+h scenario with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]. |
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Figure 4-b:
Projection of expected MSSM H→ττ 95% CL upper limits based on 2016 data [10] for the hMSSM scenario with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]. |
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Figure 4-c:
Projection of expected MSSM H→ττ 95% CL upper limits based on 2016 data [10] for the tau-phobic scenario with YR18 systematic uncertainties. The limit shown for 6000 fb−1 is an approximation of the sensitivity with the complete HL-LHC dataset to be collected by the ATLAS and CMS experiments, corresponding to an integrated luminosity of 3000 fb−1 each. The limits are compared to the CMS result using 2016 data [10]; it is a new interpretation of the information given in this reference. |
Summary |
The HL-LHC projections of the most recent results on searches for neutral MSSM Higgs bosons decaying to τ leptons have been shown, based on a data set of proton-proton collisions at √s= 13 TeV collected in 2016, corresponding to a total integrated luminosity of 35.9 fb−1. The assumed integrated luminosity for the HL-LHC is 3000 fb−1. In terms of cross section, an order-of-magnitude improvement in sensitivity is expected for neutral Higgs boson masses above 1 TeV since here the current analysis is statistically limited by the available integrated luminosity. For lower masses, an improvement of approximately a factor of five is expected for realistic assumptions on the evolution of the systematic uncertainties. For the MSSM benchmarks, the sensitivity will reach up to Higgs boson masses of 2 TeV for values of tanβ of 36, 26, and 28 for the mmod+h, the hMSSM, and the tau-phobic scenarios, respectively. |
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Compact Muon Solenoid LHC, CERN |
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