Top-quark Yukawa coupling with a dimension-6 operator
We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01027.pdf |
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| _version_ | 1841557352998764544 |
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| author | Zheng Ya-Juan |
| author_facet | Zheng Ya-Juan |
| author_sort | Zheng Ya-Juan |
| collection | DOAJ |
| description | We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process µ−µ+ → νµῡµtt¯H compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from WL−W+L and HH initiated processes. |
| format | Article |
| id | doaj-art-4cae4e6d057c4c378c0cd6eb2bf0562d |
| institution | Kabale University |
| issn | 2100-014X |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-4cae4e6d057c4c378c0cd6eb2bf0562d2025-01-06T11:33:47ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013150102710.1051/epjconf/202431501027epjconf_lcws2024_01027Top-quark Yukawa coupling with a dimension-6 operatorZheng Ya-Juan0Faculty of Education, Iwate UniversityWe extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process µ−µ+ → νµῡµtt¯H compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from WL−W+L and HH initiated processes.https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01027.pdf |
| spellingShingle | Zheng Ya-Juan Top-quark Yukawa coupling with a dimension-6 operator EPJ Web of Conferences |
| title | Top-quark Yukawa coupling with a dimension-6 operator |
| title_full | Top-quark Yukawa coupling with a dimension-6 operator |
| title_fullStr | Top-quark Yukawa coupling with a dimension-6 operator |
| title_full_unstemmed | Top-quark Yukawa coupling with a dimension-6 operator |
| title_short | Top-quark Yukawa coupling with a dimension-6 operator |
| title_sort | top quark yukawa coupling with a dimension 6 operator |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01027.pdf |
| work_keys_str_mv | AT zhengyajuan topquarkyukawacouplingwithadimension6operator |