Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via $H^{\pm} \to τ^{\pm}ν_τ$ in 13 TeV $pp$ collisions with the ATLAS detector
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| Format: | Preprint |
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2024
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| _version_ | 1866916786308382720 |
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| author | ATLAS Collaboration |
| author_facet | ATLAS Collaboration |
| contents | Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via $H^{\pm} \to τ^{\pm}ν_τ$, are searched for in 140 $\text{fb}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. Depending on whether the top-quark produced together with the $H^{\pm}$ decays hadronically or semi-leptonically, the search targets $τ$+jets or $τ$+lepton final states, in both cases with a $τ$-lepton decaying into a neutrino and hadrons. No significant excess over the Standard Model background expectation is observed. For the mass range of $80 \leq m_{H^{\pm}} \leq 3000$ GeV, upper limits at 95% confidence level are set on the production cross-section of the charged Higgs boson times the branching fraction $\mathrm{\cal{B}}(H^{\pm} \to τ^{\pm}ν_τ)$ in the range 4.5 pb-0.4 fb. In the mass range 80-160 GeV, assuming the Standard Model cross-section for $t\bar{t}$ production, this corresponds to upper limits between 0.27% and 0.02% on $\mathrm{\cal{B}}(t\to bH^{\pm}) \times \mathrm{\cal{B}}(H^{\pm} \to τ^{\pm}ν_τ)$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_17584 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via $H^{\pm} \to τ^{\pm}ν_τ$ in 13 TeV $pp$ collisions with the ATLAS detector ATLAS Collaboration High Energy Physics - Experiment Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via $H^{\pm} \to τ^{\pm}ν_τ$, are searched for in 140 $\text{fb}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. Depending on whether the top-quark produced together with the $H^{\pm}$ decays hadronically or semi-leptonically, the search targets $τ$+jets or $τ$+lepton final states, in both cases with a $τ$-lepton decaying into a neutrino and hadrons. No significant excess over the Standard Model background expectation is observed. For the mass range of $80 \leq m_{H^{\pm}} \leq 3000$ GeV, upper limits at 95% confidence level are set on the production cross-section of the charged Higgs boson times the branching fraction $\mathrm{\cal{B}}(H^{\pm} \to τ^{\pm}ν_τ)$ in the range 4.5 pb-0.4 fb. In the mass range 80-160 GeV, assuming the Standard Model cross-section for $t\bar{t}$ production, this corresponds to upper limits between 0.27% and 0.02% on $\mathrm{\cal{B}}(t\to bH^{\pm}) \times \mathrm{\cal{B}}(H^{\pm} \to τ^{\pm}ν_τ)$. |
| title | Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via $H^{\pm} \to τ^{\pm}ν_τ$ in 13 TeV $pp$ collisions with the ATLAS detector |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.17584 |