New renormalization scheme in extended Higgs sectors for Higgs precision measurements
We discuss a new renormalization scheme for mixing angles in extended Higgs sectors for the coming era of the Higgs precise measurements at future lepton colliders. We focus on the two Higgs doublet models (2HDMs) with a softly-broken Z2 symmetry as a simple and important example, in which two mixin...
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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_01009.pdf |
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| _version_ | 1841557406708924416 |
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| author | Kanemura Shinya Kikuchi Mariko Yagyu Kei |
| author_facet | Kanemura Shinya Kikuchi Mariko Yagyu Kei |
| author_sort | Kanemura Shinya |
| collection | DOAJ |
| description | We discuss a new renormalization scheme for mixing angles in extended Higgs sectors for the coming era of the Higgs precise measurements at future lepton colliders. We focus on the two Higgs doublet models (2HDMs) with a softly-broken Z2 symmetry as a simple and important example, in which two mixing angles α and β appear in the Higgs sector. In this new scheme, the counterterms for two mixing angles δα and δβ are determined by requiring that deviations in the decay rates of h → ZZ* → Zℓ+ℓ− and h → ττ from the corresponding predictions in the standard model at NLO are given by the square of the scaling factor at tree level. We show how this scheme works in the 2HDMs, and demonstrate how the other decay rates (e.g., h → WW*, h → bb¯, etc.) are predicted at NLO. |
| format | Article |
| id | doaj-art-56c0d053b08744c4b66752b2f3528eca |
| 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-56c0d053b08744c4b66752b2f3528eca2025-01-06T11:33:46ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013150100910.1051/epjconf/202431501009epjconf_lcws2024_01009New renormalization scheme in extended Higgs sectors for Higgs precision measurementsKanemura Shinya0Kikuchi Mariko1Yagyu Kei2Department of Physics, Osaka UniversityCollege of Engineering, Nihon UniversityDepartment of Physics, Osaka UniversityWe discuss a new renormalization scheme for mixing angles in extended Higgs sectors for the coming era of the Higgs precise measurements at future lepton colliders. We focus on the two Higgs doublet models (2HDMs) with a softly-broken Z2 symmetry as a simple and important example, in which two mixing angles α and β appear in the Higgs sector. In this new scheme, the counterterms for two mixing angles δα and δβ are determined by requiring that deviations in the decay rates of h → ZZ* → Zℓ+ℓ− and h → ττ from the corresponding predictions in the standard model at NLO are given by the square of the scaling factor at tree level. We show how this scheme works in the 2HDMs, and demonstrate how the other decay rates (e.g., h → WW*, h → bb¯, etc.) are predicted at NLO.https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01009.pdf |
| spellingShingle | Kanemura Shinya Kikuchi Mariko Yagyu Kei New renormalization scheme in extended Higgs sectors for Higgs precision measurements EPJ Web of Conferences |
| title | New renormalization scheme in extended Higgs sectors for Higgs precision measurements |
| title_full | New renormalization scheme in extended Higgs sectors for Higgs precision measurements |
| title_fullStr | New renormalization scheme in extended Higgs sectors for Higgs precision measurements |
| title_full_unstemmed | New renormalization scheme in extended Higgs sectors for Higgs precision measurements |
| title_short | New renormalization scheme in extended Higgs sectors for Higgs precision measurements |
| title_sort | new renormalization scheme in extended higgs sectors for higgs precision measurements |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01009.pdf |
| work_keys_str_mv | AT kanemurashinya newrenormalizationschemeinextendedhiggssectorsforhiggsprecisionmeasurements AT kikuchimariko newrenormalizationschemeinextendedhiggssectorsforhiggsprecisionmeasurements AT yagyukei newrenormalizationschemeinextendedhiggssectorsforhiggsprecisionmeasurements |