µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge
We study the process µ−µ+ → νµῡµ tt¯H with complex CP violating ttH couplings in the SMEFT with a dimension-6 operator. When the amplitudes are expressed in the Feynman-Diagram gauge, the dominance of the total cross section via the weak boson fusion diagrams is manifest. The high energy behaviour i...
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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_01028.pdf |
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| _version_ | 1841557355631738880 |
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| author | Zheng Ya-Juan |
| author_facet | Zheng Ya-Juan |
| author_sort | Zheng Ya-Juan |
| collection | DOAJ |
| description | We study the process µ−µ+ → νµῡµ tt¯H with complex CP violating ttH couplings in the SMEFT with a dimension-6 operator. When the amplitudes are expressed in the Feynman-Diagram gauge, the dominance of the total cross section via the weak boson fusion diagrams is manifest. The high energy behaviour is dictated by the higher-dimensional vertices in the dimension-6 SMEFT operator. These properties are not manifest in the unitary gauge because of subtle cancellation among diagrams. |
| format | Article |
| id | doaj-art-5d1ddb4ee11446f595f4a038d84ecef0 |
| 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-5d1ddb4ee11446f595f4a038d84ecef02025-01-06T11:33:47ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013150102810.1051/epjconf/202431501028epjconf_lcws2024_01028µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gaugeZheng Ya-Juan0Faculty of Education, Iwate UniversityWe study the process µ−µ+ → νµῡµ tt¯H with complex CP violating ttH couplings in the SMEFT with a dimension-6 operator. When the amplitudes are expressed in the Feynman-Diagram gauge, the dominance of the total cross section via the weak boson fusion diagrams is manifest. The high energy behaviour is dictated by the higher-dimensional vertices in the dimension-6 SMEFT operator. These properties are not manifest in the unitary gauge because of subtle cancellation among diagrams.https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01028.pdf |
| spellingShingle | Zheng Ya-Juan µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge EPJ Web of Conferences |
| title | µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge |
| title_full | µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge |
| title_fullStr | µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge |
| title_full_unstemmed | µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge |
| title_short | µ−µ+ → νµνµttH amplitudes in the Feynman-diagram gauge |
| title_sort | µ µ νµνµtth amplitudes in the feynman diagram gauge |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01028.pdf |
| work_keys_str_mv | AT zhengyajuan mmnmnmtthamplitudesinthefeynmandiagramgauge |