CMS-PAS-FTR-18-035 | ||
Projection of searches for exotic Higgs boson decays to light pseudoscalars for the High-Luminosity LHC | ||
CMS Collaboration | ||
February 2019 | ||
Abstract: This Physics Analysis Summary details the projections of two searches for exotic decays of the Higgs boson from LHC Run 2 to the High-Luminosity LHC. Decays to a pair of light pseudoscalar bosons are explored, in the final states of two τ leptons and two muons, or two τ leptons and two b quarks. The projections are based on analyses that use 35.9 fb−1 proton-proton collision data recorded at a center-of-mass energy of 13 TeV in 2016. Integrated luminosities of up to 3000 fb−1 are considered in the projections, with different scenarios for the extrapolation of the systematic uncertainties. | ||
Links: CDS record (PDF) ; inSPIRE record ; CADI line (restricted) ; |
Figures | |
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Figure 1:
Left: Projected expected limits on (σ(h)/σSM) times the branching fraction for h→aa→2b2τ, for 36, 300, and 3000 fb−1. Right: Projected expected limits (σ(h)/σSM)B(h→aa→2τ2b), comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 1-a:
Projected expected limits on (σ(h)/σSM) times the branching fraction for h→aa→2b2τ, for 36, 300, and 3000 fb−1. |
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Figure 1-b:
Projected expected limits (σ(h)/σSM)B(h→aa→2τ2b), comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 2:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2b2τ final state in 2HDM+S type-1 (top left), type-2 (top right), type-3 (bottom left), and type-4 (bottom right). |
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Figure 2-a:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2b2τ final state in 2HDM+S type-1. |
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Figure 2-b:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2b2τ final state in 2HDM+S type-2. |
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Figure 2-c:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2b2τ final state in 2HDM+S type-3. |
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Figure 2-d:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2b2τ final state in 2HDM+S type-4. |
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Figure 3:
Left: Projected expected limits on (σ(h)/σSM)B(h→aa→2μ2τ), for 36, 300, and 3000 fb−1. Right: Projected expected limits on (σ(h)/σSM)B(h→aa→2μ2τ), comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 3-a:
Projected expected limits on (σ(h)/σSM)B(h→aa→2μ2τ), for 36, 300, and 3000 fb−1. |
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Figure 3-b:
Projected expected limits on (σ(h)/σSM)B(h→aa→2μ2τ), comparing different scenarios for systematic uncertainties for an integrated luminosity of 3000 fb−1. |
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Figure 4:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2μ2τ final state in 2HDM+S type-1 (top left), type-2 (top right), type-3 (bottom left), and type-4 (bottom right). |
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Figure 4-a:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2μ2τ final state in 2HDM+S type-1. |
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Figure 4-b:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2μ2τ final state in 2HDM+S type-2. |
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Figure 4-c:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2μ2τ final state in 2HDM+S type-3. |
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Figure 4-d:
Expected upper limits on (σ(h)/σSM)B(h→aa) for 3000 fb−1 of data with YR18 systematic uncertainties for the 2μ2τ final state in 2HDM+S type-4. |
Tables | |
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Table 1:
The sources of systematic uncertainty for which limiting values are applied in the ''YR18 systematics uncertainties'' scenario. Systematic uncertainties of the reference Run 2 analyses are described in Refs. [1,2]. |
Summary |
Recent searches for exotic decays of the Higgs boson performed with 35.9 fb−1 of data collected at 13 TeV [1,2] have been projected to integrated luminosities of up to 3000 fb−1, achievable at the High-Luminosity LHC. They target decays of the Higgs boson to a pair of light pseudoscalars in the final states with two τ leptons and two muons, or two b quarks and two muons. The integrated luminosity of 3000 fb−1 will improve the sensitivity by about an order of magnitude for the search in the 2b2τ final state. The improvement is larger in the 2μ2τ final state and scales almost linearly with the integrated luminosity for pseudoscalar masses close to 15 GeV. |
References | ||||
1 | CMS Collaboration | Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton-proton collisions at √s= 13 TeV | PLB 785 (2018) 462 | CMS-HIG-17-024 1805.10191 |
2 | CMS Collaboration | Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state of two muons and two τ leptons in proton-proton collisions at √s= 13 TeV | JHEP 11 (2018) 018 | CMS-HIG-17-029 1805.04865 |
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Compact Muon Solenoid LHC, CERN |
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