Gauge-independent renormalization of the N2HDM
Abstract The Next-to-Minimal 2-Higgs-Doublet Model (N2HDM) is an interesting benchmark model for a Higgs sector consisting of two complex doublet and one real singlet fields. Like the Next-to-Minimal Supersymmetric extension (NMSSM) it features light Higgs bosons that could have escaped discovery du...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP12(2017)077 |
| _version_ | 1818109908835368960 |
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| author | Marcel Krause David López-Val Margarete Mühlleitner Rui Santos |
| author_facet | Marcel Krause David López-Val Margarete Mühlleitner Rui Santos |
| author_sort | Marcel Krause |
| collection | DOAJ |
| description | Abstract The Next-to-Minimal 2-Higgs-Doublet Model (N2HDM) is an interesting benchmark model for a Higgs sector consisting of two complex doublet and one real singlet fields. Like the Next-to-Minimal Supersymmetric extension (NMSSM) it features light Higgs bosons that could have escaped discovery due to their singlet admixture. Thereby, the model allows for various different Higgs-to-Higgs decay modes. Contrary to the NMSSM, however, the model is not subject to supersymmetric relations restraining its allowed parameter space and its phenomenology. For the correct determination of the allowed parameter space, the correct interpretation of the LHC Higgs data and the possible distinction of beyond-the-Standard Model Higgs sectors higher order corrections to the Higgs boson observables are crucial. This requires not only their computation but also the development of a suitable renormalization scheme. In this paper we have worked out the renormalization of the complete N2HDM and provide a scheme for the gauge-independent renormalization of the mixing angles. We discuss the renormalization of the ℤ2 $$ {\mathbb{Z}}_2 $$ soft breaking parameter m 122 and the singlet vacuum expectation value v S . Both enter the Higgs self-couplings relevant for Higgs-to-Higgs decays. We apply our renormalization scheme to different sample processes such as Higgs decays into Z bosons and decays into a lighter Higgs pair. Our results show that the corrections may be sizable and have to be taken into account for reliable predictions. |
| first_indexed | 2024-12-11T02:38:44Z |
| format | Article |
| id | doaj.art-06e7d0cd73ee4cc989fef88e3bc7e31a |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-11T02:38:44Z |
| publishDate | 2017-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-06e7d0cd73ee4cc989fef88e3bc7e31a2022-12-22T01:23:37ZengSpringerOpenJournal of High Energy Physics1029-84792017-12-0120171216810.1007/JHEP12(2017)077Gauge-independent renormalization of the N2HDMMarcel Krause0David López-Val1Margarete Mühlleitner2Rui Santos3Institute for Theoretical Physics, Karlsruher Institute of TechnologyInstitute for Theoretical Physics, Karlsruher Institute of TechnologyInstitute for Theoretical Physics, Karlsruher Institute of TechnologyISEL — Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de LisboaAbstract The Next-to-Minimal 2-Higgs-Doublet Model (N2HDM) is an interesting benchmark model for a Higgs sector consisting of two complex doublet and one real singlet fields. Like the Next-to-Minimal Supersymmetric extension (NMSSM) it features light Higgs bosons that could have escaped discovery due to their singlet admixture. Thereby, the model allows for various different Higgs-to-Higgs decay modes. Contrary to the NMSSM, however, the model is not subject to supersymmetric relations restraining its allowed parameter space and its phenomenology. For the correct determination of the allowed parameter space, the correct interpretation of the LHC Higgs data and the possible distinction of beyond-the-Standard Model Higgs sectors higher order corrections to the Higgs boson observables are crucial. This requires not only their computation but also the development of a suitable renormalization scheme. In this paper we have worked out the renormalization of the complete N2HDM and provide a scheme for the gauge-independent renormalization of the mixing angles. We discuss the renormalization of the ℤ2 $$ {\mathbb{Z}}_2 $$ soft breaking parameter m 122 and the singlet vacuum expectation value v S . Both enter the Higgs self-couplings relevant for Higgs-to-Higgs decays. We apply our renormalization scheme to different sample processes such as Higgs decays into Z bosons and decays into a lighter Higgs pair. Our results show that the corrections may be sizable and have to be taken into account for reliable predictions.http://link.springer.com/article/10.1007/JHEP12(2017)077Beyond Standard ModelHiggs Physics |
| spellingShingle | Marcel Krause David López-Val Margarete Mühlleitner Rui Santos Gauge-independent renormalization of the N2HDM Journal of High Energy Physics Beyond Standard Model Higgs Physics |
| title | Gauge-independent renormalization of the N2HDM |
| title_full | Gauge-independent renormalization of the N2HDM |
| title_fullStr | Gauge-independent renormalization of the N2HDM |
| title_full_unstemmed | Gauge-independent renormalization of the N2HDM |
| title_short | Gauge-independent renormalization of the N2HDM |
| title_sort | gauge independent renormalization of the n2hdm |
| topic | Beyond Standard Model Higgs Physics |
| url | http://link.springer.com/article/10.1007/JHEP12(2017)077 |
| work_keys_str_mv | AT marcelkrause gaugeindependentrenormalizationofthen2hdm AT davidlopezval gaugeindependentrenormalizationofthen2hdm AT margaretemuhlleitner gaugeindependentrenormalizationofthen2hdm AT ruisantos gaugeindependentrenormalizationofthen2hdm |