Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector
This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb−1 of proton–proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decayi...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2019
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| _version_ | 1797096358845349888 |
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| author | Aad, G Abbott, B Abbott, DC Frost, J The ATLAS Collaboration |
| author_facet | Aad, G Abbott, B Abbott, DC Frost, J The ATLAS Collaboration |
| author_sort | Aad, G |
| collection | OXFORD |
| description | This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb−1 of proton–proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the bb¯bb¯, bb¯W+W−, bb¯τ+τ−, W+W−W+W−, bb¯γγ and W+W−γγ final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0<κλ<12.0 (−5.8<κλ<12.0). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza–Klein Randall–Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model. |
| first_indexed | 2024-03-07T04:40:41Z |
| format | Journal article |
| id | oxford-uuid:d188c038-7f02-44b5-93b3-8f5e417e00c3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:40:41Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:d188c038-7f02-44b5-93b3-8f5e417e00c32022-03-27T07:57:41ZCombination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detectorJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d188c038-7f02-44b5-93b3-8f5e417e00c3EnglishSymplectic ElementsElsevier2019Aad, GAbbott, BAbbott, DCFrost, JThe ATLAS CollaborationThis letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb−1 of proton–proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the bb¯bb¯, bb¯W+W−, bb¯τ+τ−, W+W−W+W−, bb¯γγ and W+W−γγ final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0<κλ<12.0 (−5.8<κλ<12.0). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza–Klein Randall–Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model. |
| spellingShingle | Aad, G Abbott, B Abbott, DC Frost, J The ATLAS Collaboration Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title | Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title_full | Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title_fullStr | Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title_full_unstemmed | Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title_short | Combination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector |
| title_sort | combination of searches for higgs boson pairs in pp collisions at root s 13 tev with the atlas detector |
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