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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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
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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| Summary: | 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. |
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| ISSN: | 2100-014X |