Investigating the Electroweak phase transition with a real scalar singlet at a muon collider
Abstract A strong first-order electroweak phase transition (SFOEWPT) is essential for explaining baryogenesis, and for potentially generating observable gravitational waves. In the present study, we investigate the potential of a high-energy muon collider to examine the occurrence of SFOEWPT within...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-04-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP04(2025)093 |
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| author | Mohamed Aboudonia Csaba Balazs Andreas Papaefstathiou Graham White |
| author_facet | Mohamed Aboudonia Csaba Balazs Andreas Papaefstathiou Graham White |
| author_sort | Mohamed Aboudonia |
| collection | DOAJ |
| description | Abstract A strong first-order electroweak phase transition (SFOEWPT) is essential for explaining baryogenesis, and for potentially generating observable gravitational waves. In the present study, we investigate the potential of a high-energy muon collider to examine the occurrence of SFOEWPT within the context of a Standard Model extended by a real scalar singlet (xSM). We present an analysis of all viable decay modes of a singlet-like scalar particle, in order to constrain the valid parameter space of SFOEWPT, which was extracted numerically at different renormalization scales to account for theoretical uncertainties. This allowed us to determine the sensitivity of a muon collider to the production and decay channels of new heavy scalar singlet-like particles that emerge in the xSM. Our findings demonstrate that a 3 TeV muon collider could directly probe the nature of electroweak symmetry breaking by efficiently detecting new scalar particles associated with a first-order electroweak phase transition through jet-rich final states, thus complementing the indirect constraints from gravitational wave experiments. |
| format | Article |
| id | doaj-art-eb0784cdd07a4128a2174b0093da16f5 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-eb0784cdd07a4128a2174b0093da16f52025-08-20T03:53:22ZengSpringerOpenJournal of High Energy Physics1029-84792025-04-012025414110.1007/JHEP04(2025)093Investigating the Electroweak phase transition with a real scalar singlet at a muon colliderMohamed Aboudonia0Csaba Balazs1Andreas Papaefstathiou2Graham White3School of Physics and Astronomy, Monash UniversitySchool of Physics and Astronomy, Monash UniversityDepartment of Physics, Kennesaw State UniversitySchool of Physics and Astronomy, University of SouthamptonAbstract A strong first-order electroweak phase transition (SFOEWPT) is essential for explaining baryogenesis, and for potentially generating observable gravitational waves. In the present study, we investigate the potential of a high-energy muon collider to examine the occurrence of SFOEWPT within the context of a Standard Model extended by a real scalar singlet (xSM). We present an analysis of all viable decay modes of a singlet-like scalar particle, in order to constrain the valid parameter space of SFOEWPT, which was extracted numerically at different renormalization scales to account for theoretical uncertainties. This allowed us to determine the sensitivity of a muon collider to the production and decay channels of new heavy scalar singlet-like particles that emerge in the xSM. Our findings demonstrate that a 3 TeV muon collider could directly probe the nature of electroweak symmetry breaking by efficiently detecting new scalar particles associated with a first-order electroweak phase transition through jet-rich final states, thus complementing the indirect constraints from gravitational wave experiments.https://doi.org/10.1007/JHEP04(2025)093Phase Transitions in the Early UniverseSpecific BSM Phenomenology |
| spellingShingle | Mohamed Aboudonia Csaba Balazs Andreas Papaefstathiou Graham White Investigating the Electroweak phase transition with a real scalar singlet at a muon collider Journal of High Energy Physics Phase Transitions in the Early Universe Specific BSM Phenomenology |
| title | Investigating the Electroweak phase transition with a real scalar singlet at a muon collider |
| title_full | Investigating the Electroweak phase transition with a real scalar singlet at a muon collider |
| title_fullStr | Investigating the Electroweak phase transition with a real scalar singlet at a muon collider |
| title_full_unstemmed | Investigating the Electroweak phase transition with a real scalar singlet at a muon collider |
| title_short | Investigating the Electroweak phase transition with a real scalar singlet at a muon collider |
| title_sort | investigating the electroweak phase transition with a real scalar singlet at a muon collider |
| topic | Phase Transitions in the Early Universe Specific BSM Phenomenology |
| url | https://doi.org/10.1007/JHEP04(2025)093 |
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