Publicação
Combination of Searches for Resonant Higgs Boson Pair Production Using pp Collisions at √s=13 TeV with the ATLAS Detector
| Resumo: | A combination of searches for a new resonance decaying into a Higgs boson pair is presented, using up to \( 139 \, \text{fb}^{-1} \) of \( p \! p \) collision data at \( \sqrt{s} = 13 \, \text{TeV} \) recorded with the ATLAS detector at the LHC. The combination includes searches performed in three decay channels: \( b \bar{b} b \bar{b} \), \( b \bar{b} \tau^+ \tau^- \), and \( b \bar{b} \gamma \gamma \). No excess above the expected Standard Model background is observed and upper limits are set at the 95% confidence level on the production cross section of Higgs boson pairs originating from the decay of a narrow scalar resonance with mass in the range 251 GeV–5 TeV. The observed (expected) limits are in the range 0.96–600 fb (1.2–390 fb). The limits are interpreted in the type-I two-Higgs-doublet model and the minimal supersymmetric standard model, and constrain parameter space not previously excluded by other searches. |
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| Autores principais: | Castro, Nuno Filipe |
| Outros Autores: | Onofre, A.; ATLAS Collaboration |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | A combination of searches for a new resonance decaying into a Higgs boson pair is presented, using up to \( 139 \, \text{fb}^{-1} \) of \( p \! p \) collision data at \( \sqrt{s} = 13 \, \text{TeV} \) recorded with the ATLAS detector at the LHC. The combination includes searches performed in three decay channels: \( b \bar{b} b \bar{b} \), \( b \bar{b} \tau^+ \tau^- \), and \( b \bar{b} \gamma \gamma \). No excess above the expected Standard Model background is observed and upper limits are set at the 95% confidence level on the production cross section of Higgs boson pairs originating from the decay of a narrow scalar resonance with mass in the range 251 GeV–5 TeV. The observed (expected) limits are in the range 0.96–600 fb (1.2–390 fb). The limits are interpreted in the type-I two-Higgs-doublet model and the minimal supersymmetric standard model, and constrain parameter space not previously excluded by other searches. |
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