Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels
Abstract We investigate the prospects for resonant di-Higgs and heavy Higgs production searches at the 14 TeV HL-LHC in the combination of bbγγ and 4l channels, as a probe of a possible first order electroweak phase transition in real singlet scalar extension of the Standard Model. Event selection f...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP12(2023)018 |
| _version_ | 1827301422868201472 |
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| author | Wenxing Zhang Hao-Lin Li Kun Liu Michael J. Ramsey-Musolf Yonghao Zeng Suntharan Arunasalam |
| author_facet | Wenxing Zhang Hao-Lin Li Kun Liu Michael J. Ramsey-Musolf Yonghao Zeng Suntharan Arunasalam |
| author_sort | Wenxing Zhang |
| collection | DOAJ |
| description | Abstract We investigate the prospects for resonant di-Higgs and heavy Higgs production searches at the 14 TeV HL-LHC in the combination of bbγγ and 4l channels, as a probe of a possible first order electroweak phase transition in real singlet scalar extension of the Standard Model. Event selection follows those utilized in the bbγγ and 4l searches by the ATLAS Collaboration, applied to simulation using benchmark parameters that realize a strong first order electroweak phase transition. The output of discriminant analysis is implemented by numerical calculation, optimised by the joint restriction from the two channels. The prospective reach for bbγγ/4l channel could be more competitive in probing the electroweak phase transition at lower/higher resonance masses. With 3 ab −1 integrated luminosity, the combination of the bbγγ and 4l channels can discover/exclude a significant portion of the viable parameter space that realizes a strong first order phase transition when the resonance mass is heavier than 500 GeV. |
| first_indexed | 2024-03-09T01:22:57Z |
| format | Article |
| id | doaj.art-e9baf113982f4e57a4e330fb0c9c33d3 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-24T16:24:05Z |
| publishDate | 2023-12-01 |
| publisher | SpringerOpen |
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| series | Journal of High Energy Physics |
| spelling | doaj.art-e9baf113982f4e57a4e330fb0c9c33d32024-03-31T11:07:09ZengSpringerOpenJournal of High Energy Physics1029-84792023-12-0120231212910.1007/JHEP12(2023)018Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channelsWenxing Zhang0Hao-Lin Li1Kun Liu2Michael J. Ramsey-Musolf3Yonghao Zeng4Suntharan Arunasalam5Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong UniversityCentre for Cosmology, Particle Physics and Phenomenology (CP3), Universite Catholique de LouvainTsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong UniversityTsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong UniversityTsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong UniversityTsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong UniversityAbstract We investigate the prospects for resonant di-Higgs and heavy Higgs production searches at the 14 TeV HL-LHC in the combination of bbγγ and 4l channels, as a probe of a possible first order electroweak phase transition in real singlet scalar extension of the Standard Model. Event selection follows those utilized in the bbγγ and 4l searches by the ATLAS Collaboration, applied to simulation using benchmark parameters that realize a strong first order electroweak phase transition. The output of discriminant analysis is implemented by numerical calculation, optimised by the joint restriction from the two channels. The prospective reach for bbγγ/4l channel could be more competitive in probing the electroweak phase transition at lower/higher resonance masses. With 3 ab −1 integrated luminosity, the combination of the bbγγ and 4l channels can discover/exclude a significant portion of the viable parameter space that realizes a strong first order phase transition when the resonance mass is heavier than 500 GeV.https://doi.org/10.1007/JHEP12(2023)018Specific BSM PhenomenologyMulti-Higgs ModelsHiggs PropertiesOther Weak Scale BSM Models |
| spellingShingle | Wenxing Zhang Hao-Lin Li Kun Liu Michael J. Ramsey-Musolf Yonghao Zeng Suntharan Arunasalam Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels Journal of High Energy Physics Specific BSM Phenomenology Multi-Higgs Models Higgs Properties Other Weak Scale BSM Models |
| title | Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels |
| title_full | Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels |
| title_fullStr | Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels |
| title_full_unstemmed | Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels |
| title_short | Probing electroweak phase transition in the singlet Standard Model via bbγγ and 4l channels |
| title_sort | probing electroweak phase transition in the singlet standard model via bbγγ and 4l channels |
| topic | Specific BSM Phenomenology Multi-Higgs Models Higgs Properties Other Weak Scale BSM Models |
| url | https://doi.org/10.1007/JHEP12(2023)018 |
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