High scale flavor alignment in two-Higgs doublet models and its phenomenology
Abstract The most general two-Higgs doublet model (2HDM) includes potentially large sources of flavor changing neutral currents (FCNCs) that must be suppressed in order to achieve a phenomenologically viable model. The flavor alignment ansatz postulates that all Yukawa coupling matrices are diagonal...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP06(2017)110 |
| _version_ | 1818837975992107008 |
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| author | Stefania Gori Howard E. Haber Edward Santos |
| author_facet | Stefania Gori Howard E. Haber Edward Santos |
| author_sort | Stefania Gori |
| collection | DOAJ |
| description | Abstract The most general two-Higgs doublet model (2HDM) includes potentially large sources of flavor changing neutral currents (FCNCs) that must be suppressed in order to achieve a phenomenologically viable model. The flavor alignment ansatz postulates that all Yukawa coupling matrices are diagonal when expressed in the basis of mass-eigenstate fermion fields, in which case tree-level Higgs-mediated FCNCs are eliminated. In this work, we explore models with the flavor alignment condition imposed at a very high energy scale, which results in the generation of Higgs-mediated FCNCs via renormalization group running from the high energy scale to the electroweak scale. Using the current experimental bounds on flavor changing observables, constraints are derived on the aligned 2HDM parameter space. In the favored parameter region, we analyze the implications for Higgs boson phenomenology. |
| first_indexed | 2024-12-19T03:31:03Z |
| format | Article |
| id | doaj.art-f12115308ccf45b3923887794bd8e82e |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-19T03:31:03Z |
| publishDate | 2017-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-f12115308ccf45b3923887794bd8e82e2022-12-21T20:37:30ZengSpringerOpenJournal of High Energy Physics1029-84792017-06-012017615210.1007/JHEP06(2017)110High scale flavor alignment in two-Higgs doublet models and its phenomenologyStefania Gori0Howard E. Haber1Edward Santos2Department of Physics, University of CincinnatiSanta Cruz Institute for Particle Physics, University of CaliforniaSanta Cruz Institute for Particle Physics, University of CaliforniaAbstract The most general two-Higgs doublet model (2HDM) includes potentially large sources of flavor changing neutral currents (FCNCs) that must be suppressed in order to achieve a phenomenologically viable model. The flavor alignment ansatz postulates that all Yukawa coupling matrices are diagonal when expressed in the basis of mass-eigenstate fermion fields, in which case tree-level Higgs-mediated FCNCs are eliminated. In this work, we explore models with the flavor alignment condition imposed at a very high energy scale, which results in the generation of Higgs-mediated FCNCs via renormalization group running from the high energy scale to the electroweak scale. Using the current experimental bounds on flavor changing observables, constraints are derived on the aligned 2HDM parameter space. In the favored parameter region, we analyze the implications for Higgs boson phenomenology.http://link.springer.com/article/10.1007/JHEP06(2017)110Beyond Standard ModelHeavy Quark PhysicsHiggs Physics |
| spellingShingle | Stefania Gori Howard E. Haber Edward Santos High scale flavor alignment in two-Higgs doublet models and its phenomenology Journal of High Energy Physics Beyond Standard Model Heavy Quark Physics Higgs Physics |
| title | High scale flavor alignment in two-Higgs doublet models and its phenomenology |
| title_full | High scale flavor alignment in two-Higgs doublet models and its phenomenology |
| title_fullStr | High scale flavor alignment in two-Higgs doublet models and its phenomenology |
| title_full_unstemmed | High scale flavor alignment in two-Higgs doublet models and its phenomenology |
| title_short | High scale flavor alignment in two-Higgs doublet models and its phenomenology |
| title_sort | high scale flavor alignment in two higgs doublet models and its phenomenology |
| topic | Beyond Standard Model Heavy Quark Physics Higgs Physics |
| url | http://link.springer.com/article/10.1007/JHEP06(2017)110 |
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