A new insight into the phase transition in the early Universe with two Higgs doublets
Abstract We study the electroweak phase transition in the alignment limit of the CP-conserving two-Higgs-doublet model (2HDM) of Type I and Type II. The effective potential is evaluated at one-loop, where the thermal potential includes Daisy corrections and is reliably approximated by means of a sum...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP05(2018)151 |
| _version_ | 1818260290161082368 |
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| author | Jérémy Bernon Ligong Bian Yun Jiang |
| author_facet | Jérémy Bernon Ligong Bian Yun Jiang |
| author_sort | Jérémy Bernon |
| collection | DOAJ |
| description | Abstract We study the electroweak phase transition in the alignment limit of the CP-conserving two-Higgs-doublet model (2HDM) of Type I and Type II. The effective potential is evaluated at one-loop, where the thermal potential includes Daisy corrections and is reliably approximated by means of a sum of Bessel functions. Both 1-stage and 2-stage electroweak phase transitions are shown to be possible, depending on the pattern of the vacuum development as the Universe cools down. For the 1-stage case focused on in this paper, we analyze the properties of phase transition and discover that the field value of the electroweak symmetry breaking vacuum at the critical temperature at which the first order phase transition occurs is largely correlated with the vacuum depth of the 1-loop potential at zero temperature. We demonstrate that a strong first order electroweak phase transition (SFOEWPT) in the 2HDM is achievable and establish benchmark scenarios leading to different testable signatures at colliders. In addition, we verify that an enhanced triple Higgs coupling (including loop corrections) is a typical feature of the SFOPT driven by the additional doublet. As a result, SFOEWPT might be able to be probed at the LHC and future lepton colliders through Higgs pair production. |
| first_indexed | 2024-12-12T18:28:59Z |
| format | Article |
| id | doaj.art-3be99d18e6e94187a425393fc6d64ff2 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-12T18:28:59Z |
| publishDate | 2018-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-3be99d18e6e94187a425393fc6d64ff22022-12-22T00:15:57ZengSpringerOpenJournal of High Energy Physics1029-84792018-05-012018514310.1007/JHEP05(2018)151A new insight into the phase transition in the early Universe with two Higgs doubletsJérémy Bernon0Ligong Bian1Yun Jiang2Institute for Advanced Studies, The Hong Kong University of Science and TechnologyDepartment of Physics, Chongqing UniversityNBIA and Discovery Center, Niels Bohr Institute, University of CopenhagenAbstract We study the electroweak phase transition in the alignment limit of the CP-conserving two-Higgs-doublet model (2HDM) of Type I and Type II. The effective potential is evaluated at one-loop, where the thermal potential includes Daisy corrections and is reliably approximated by means of a sum of Bessel functions. Both 1-stage and 2-stage electroweak phase transitions are shown to be possible, depending on the pattern of the vacuum development as the Universe cools down. For the 1-stage case focused on in this paper, we analyze the properties of phase transition and discover that the field value of the electroweak symmetry breaking vacuum at the critical temperature at which the first order phase transition occurs is largely correlated with the vacuum depth of the 1-loop potential at zero temperature. We demonstrate that a strong first order electroweak phase transition (SFOEWPT) in the 2HDM is achievable and establish benchmark scenarios leading to different testable signatures at colliders. In addition, we verify that an enhanced triple Higgs coupling (including loop corrections) is a typical feature of the SFOPT driven by the additional doublet. As a result, SFOEWPT might be able to be probed at the LHC and future lepton colliders through Higgs pair production.http://link.springer.com/article/10.1007/JHEP05(2018)151Beyond Standard ModelThermal Field TheoryHiggs PhysicsCosmology of Theories beyond the SM |
| spellingShingle | Jérémy Bernon Ligong Bian Yun Jiang A new insight into the phase transition in the early Universe with two Higgs doublets Journal of High Energy Physics Beyond Standard Model Thermal Field Theory Higgs Physics Cosmology of Theories beyond the SM |
| title | A new insight into the phase transition in the early Universe with two Higgs doublets |
| title_full | A new insight into the phase transition in the early Universe with two Higgs doublets |
| title_fullStr | A new insight into the phase transition in the early Universe with two Higgs doublets |
| title_full_unstemmed | A new insight into the phase transition in the early Universe with two Higgs doublets |
| title_short | A new insight into the phase transition in the early Universe with two Higgs doublets |
| title_sort | new insight into the phase transition in the early universe with two higgs doublets |
| topic | Beyond Standard Model Thermal Field Theory Higgs Physics Cosmology of Theories beyond the SM |
| url | http://link.springer.com/article/10.1007/JHEP05(2018)151 |
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