Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition
Abstract The top quark as the heaviest particle in the Standard Model (SM) defines an important mass scale for Higgs physics and the electroweak scale itself. It is therefore a well-motivated degree of freedom which could reveal the presence of new interactions beyond the SM. Correlating modificatio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-02-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP02(2024)045 |
| _version_ | 1797276056495849472 |
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| author | Anisha Duarte Azevedo Lisa Biermann Christoph Englert Margarete Mühlleitner |
| author_facet | Anisha Duarte Azevedo Lisa Biermann Christoph Englert Margarete Mühlleitner |
| author_sort | Anisha |
| collection | DOAJ |
| description | Abstract The top quark as the heaviest particle in the Standard Model (SM) defines an important mass scale for Higgs physics and the electroweak scale itself. It is therefore a well-motivated degree of freedom which could reveal the presence of new interactions beyond the SM. Correlating modifications of the top-Higgs interactions in the 2-Higgs-Doublet Model (2HDM), we analyse effective field theory deformations of these interactions from the point of view of a strong first-order electroweak phase transition (SFOEWPT). We show that such modifications are compatible with current Higgs data and that an SFOEWPT can be tantamount to a current overestimate of exotic Higgs searches’ sensitivity at the LHC in t t ¯ $$ t\overline{t} $$ and four top quark final states. We argue that these searches remain robust from the point of accidental signal-background interference so that the current experimental strategy might well lead to 2HDM-like discoveries in the near future. |
| first_indexed | 2024-03-07T15:22:51Z |
| format | Article |
| id | doaj.art-52a07d93e0c94909aad8eb2d9d6783a9 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-07T15:22:51Z |
| publishDate | 2024-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-52a07d93e0c94909aad8eb2d9d6783a92024-03-05T17:29:14ZengSpringerOpenJournal of High Energy Physics1029-84792024-02-012024212110.1007/JHEP02(2024)045Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transitionAnisha0Duarte Azevedo1Lisa Biermann2Christoph Englert3Margarete Mühlleitner4School of Physics & Astronomy, University of GlasgowInstitute for Theoretical Physics, Karlsruhe Institute of TechnologyInstitute for Theoretical Physics, Karlsruhe Institute of TechnologySchool of Physics & Astronomy, University of GlasgowInstitute for Theoretical Physics, Karlsruhe Institute of TechnologyAbstract The top quark as the heaviest particle in the Standard Model (SM) defines an important mass scale for Higgs physics and the electroweak scale itself. It is therefore a well-motivated degree of freedom which could reveal the presence of new interactions beyond the SM. Correlating modifications of the top-Higgs interactions in the 2-Higgs-Doublet Model (2HDM), we analyse effective field theory deformations of these interactions from the point of view of a strong first-order electroweak phase transition (SFOEWPT). We show that such modifications are compatible with current Higgs data and that an SFOEWPT can be tantamount to a current overestimate of exotic Higgs searches’ sensitivity at the LHC in t t ¯ $$ t\overline{t} $$ and four top quark final states. We argue that these searches remain robust from the point of accidental signal-background interference so that the current experimental strategy might well lead to 2HDM-like discoveries in the near future.https://doi.org/10.1007/JHEP02(2024)045Higgs PropertiesMulti-Higgs ModelsSpecific BSM Phenomenology |
| spellingShingle | Anisha Duarte Azevedo Lisa Biermann Christoph Englert Margarete Mühlleitner Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition Journal of High Energy Physics Higgs Properties Multi-Higgs Models Specific BSM Phenomenology |
| title | Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition |
| title_full | Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition |
| title_fullStr | Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition |
| title_full_unstemmed | Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition |
| title_short | Effective 2HDM Yukawa interactions and a strong first-order electroweak phase transition |
| title_sort | effective 2hdm yukawa interactions and a strong first order electroweak phase transition |
| topic | Higgs Properties Multi-Higgs Models Specific BSM Phenomenology |
| url | https://doi.org/10.1007/JHEP02(2024)045 |
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