On the importance of three-body decays of vector-like quarks
Abstract It is a common feature of vector-like extensions of the electroweak sector to have near degenerate states, such as electroweak doublets. In simplified models, it is usually assumed that these have decay widths saturated by two-body channels. As a consequence, experimental searches can be do...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-10-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP10(2023)011 |
| _version_ | 1827370572112199680 |
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| author | Carlos Bautista Leonardo de Lima Ricardo D’Elia Matheus Aurore Savoy-Navarro |
| author_facet | Carlos Bautista Leonardo de Lima Ricardo D’Elia Matheus Aurore Savoy-Navarro |
| author_sort | Carlos Bautista |
| collection | DOAJ |
| description | Abstract It is a common feature of vector-like extensions of the electroweak sector to have near degenerate states, such as electroweak doublets. In simplified models, it is usually assumed that these have decay widths saturated by two-body channels. As a consequence, experimental searches can be done focusing on only one of the states of the doublet. Taking as an example case the light exotic electroweak doublet present in the Minimal Composite Higgs Model, we show that including three-body decays in the pair production process makes this separation unfeasible, since both states of the doublet will be present and contribute significantly to the signal. In addition, by recasting present searches in multileptonic channels, with a simplified cut-and-count analysis, a relevant increase in discovery reach or exclusion potential is obtained; this indeed motivates a more detailed analysis. This study shows how an inclusive search strategy, taking into account both the near degeneracy and the presence of three-body decays, will have greater discovery power and be more natural from a model building perspective. |
| first_indexed | 2024-03-08T10:17:29Z |
| format | Article |
| id | doaj.art-1a8487bf832b4684bbf826317f8c0301 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-08T10:17:29Z |
| publishDate | 2023-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-1a8487bf832b4684bbf826317f8c03012024-01-28T12:17:47ZengSpringerOpenJournal of High Energy Physics1029-84792023-10-0120231012310.1007/JHEP10(2023)011On the importance of three-body decays of vector-like quarksCarlos Bautista0Leonardo de Lima1Ricardo D’Elia Matheus2Aurore Savoy-Navarro3Instituto de Física Teórica, Universidade Estadual Paulista (UNESP)Universidade Federal Tecnológica do Paraná (UTFPR)Instituto de Física Teórica, Universidade Estadual Paulista (UNESP)RFU-CEA, Université Paris-Saclay and CNRS-IN2P3Abstract It is a common feature of vector-like extensions of the electroweak sector to have near degenerate states, such as electroweak doublets. In simplified models, it is usually assumed that these have decay widths saturated by two-body channels. As a consequence, experimental searches can be done focusing on only one of the states of the doublet. Taking as an example case the light exotic electroweak doublet present in the Minimal Composite Higgs Model, we show that including three-body decays in the pair production process makes this separation unfeasible, since both states of the doublet will be present and contribute significantly to the signal. In addition, by recasting present searches in multileptonic channels, with a simplified cut-and-count analysis, a relevant increase in discovery reach or exclusion potential is obtained; this indeed motivates a more detailed analysis. This study shows how an inclusive search strategy, taking into account both the near degeneracy and the presence of three-body decays, will have greater discovery power and be more natural from a model building perspective.https://doi.org/10.1007/JHEP10(2023)011CompositenessHierarchy ProblemSpecific BSM PhenomenologyVector-Like Fermions |
| spellingShingle | Carlos Bautista Leonardo de Lima Ricardo D’Elia Matheus Aurore Savoy-Navarro On the importance of three-body decays of vector-like quarks Journal of High Energy Physics Compositeness Hierarchy Problem Specific BSM Phenomenology Vector-Like Fermions |
| title | On the importance of three-body decays of vector-like quarks |
| title_full | On the importance of three-body decays of vector-like quarks |
| title_fullStr | On the importance of three-body decays of vector-like quarks |
| title_full_unstemmed | On the importance of three-body decays of vector-like quarks |
| title_short | On the importance of three-body decays of vector-like quarks |
| title_sort | on the importance of three body decays of vector like quarks |
| topic | Compositeness Hierarchy Problem Specific BSM Phenomenology Vector-Like Fermions |
| url | https://doi.org/10.1007/JHEP10(2023)011 |
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