Flavor puzzle in three Higgs-doublet models: Insights from BGL and lessons from flavor data
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912250699186176 |
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| author | Das, Dipankar Levy, Miguel Prasad, Anugrah M. |
| author_facet | Das, Dipankar Levy, Miguel Prasad, Anugrah M. |
| contents | We study a variant of the 3HDM, referred to as the BGL-3HDM, incorporating a $U(1)_1\times U(1)_2$ symmetry, which can distinguish the primary sources of mass for different fermion generations. In the version considered here, the Yukawa matrices in the down-quark and charged lepton sectors are diagonal, thereby eliminating tree-level FCNCs in these sectors. FCNC interactions mediated by neutral nonstandard Higgses are confined to the up-quark sector only. No new BSM parameters are introduced by the Yukawa sector of the model, making it as economical as the NFC versions of 3HDM with a $U(1)_1\times U(1)_2$ symmetry in terms of the number of free parameters. However, even in the down-quark and in the charged lepton sectors, flavor diagonal but nonuniversal Higgs couplings set this model apart from the NFC versions of the 3HDM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_20296 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Flavor puzzle in three Higgs-doublet models: Insights from BGL and lessons from flavor data Das, Dipankar Levy, Miguel Prasad, Anugrah M. High Energy Physics - Phenomenology We study a variant of the 3HDM, referred to as the BGL-3HDM, incorporating a $U(1)_1\times U(1)_2$ symmetry, which can distinguish the primary sources of mass for different fermion generations. In the version considered here, the Yukawa matrices in the down-quark and charged lepton sectors are diagonal, thereby eliminating tree-level FCNCs in these sectors. FCNC interactions mediated by neutral nonstandard Higgses are confined to the up-quark sector only. No new BSM parameters are introduced by the Yukawa sector of the model, making it as economical as the NFC versions of 3HDM with a $U(1)_1\times U(1)_2$ symmetry in terms of the number of free parameters. However, even in the down-quark and in the charged lepton sectors, flavor diagonal but nonuniversal Higgs couplings set this model apart from the NFC versions of the 3HDM. |
| title | Flavor puzzle in three Higgs-doublet models: Insights from BGL and lessons from flavor data |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.20296 |