Finite family groups for fermionic and leptoquark mixing patterns
Abstract We employ a bottom-up and model-independent technique to search for non-Abelian discrete flavour symmetries capable of predicting viable CKM and PMNS matrices alongside of special patterns of leptoquark couplings. In particular, we analyze patterns de- rived when an ultra-violet flavour the...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2020)194 |
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| author | Jordan Bernigaud Ivo de Medeiros Varzielas Jim Talbert |
| author_facet | Jordan Bernigaud Ivo de Medeiros Varzielas Jim Talbert |
| author_sort | Jordan Bernigaud |
| collection | DOAJ |
| description | Abstract We employ a bottom-up and model-independent technique to search for non-Abelian discrete flavour symmetries capable of predicting viable CKM and PMNS matrices alongside of special patterns of leptoquark couplings. In particular, we analyze patterns de- rived when an ultra-violet flavour theory is assumed to break to global Abelian symmetries in Standard Model fermion masses and new Yukawa-like terms sourced by the leptoquark representation. The phenomenology of different classes of these ‘simplified models’ can be explored without reference to explicit model-building assumptions, e.g. the nature of flavour symmetry breaking or any additional field content associated to it, and are also capable of explaining hints of lepton non-universality in R K ∗ $$ {\mathcal{R}}_{K^{\left(\ast \right)}} $$ . Assuming experimentally interesting CKM and PMNS matrix elements, our algorithm finds an abundance of predictive non-Abelian flavour groups and therefore provides promising directions for future model building in the flavoured leptoquark space, regardless of whether the anomalous R K ∗ $$ {\mathcal{R}}_{K^{\left(\ast \right)}} $$ measurements withstand further experimental scrutiny. |
| format | Article |
| id | doaj-art-5add721bbe7a44d6a4f5f00e8a869015 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-5add721bbe7a44d6a4f5f00e8a8690152025-02-09T12:06:07ZengSpringerOpenJournal of High Energy Physics1029-84792020-01-012020114010.1007/JHEP01(2020)194Finite family groups for fermionic and leptoquark mixing patternsJordan Bernigaud0Ivo de Medeiros Varzielas1Jim Talbert2Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LAPThCFTP, Departamento de Física, Instituto Superior Técnico, Universidade de LisboaTheory Group, Deutsches Elektronen-Synchrotron (DESY)Abstract We employ a bottom-up and model-independent technique to search for non-Abelian discrete flavour symmetries capable of predicting viable CKM and PMNS matrices alongside of special patterns of leptoquark couplings. In particular, we analyze patterns de- rived when an ultra-violet flavour theory is assumed to break to global Abelian symmetries in Standard Model fermion masses and new Yukawa-like terms sourced by the leptoquark representation. The phenomenology of different classes of these ‘simplified models’ can be explored without reference to explicit model-building assumptions, e.g. the nature of flavour symmetry breaking or any additional field content associated to it, and are also capable of explaining hints of lepton non-universality in R K ∗ $$ {\mathcal{R}}_{K^{\left(\ast \right)}} $$ . Assuming experimentally interesting CKM and PMNS matrix elements, our algorithm finds an abundance of predictive non-Abelian flavour groups and therefore provides promising directions for future model building in the flavoured leptoquark space, regardless of whether the anomalous R K ∗ $$ {\mathcal{R}}_{K^{\left(\ast \right)}} $$ measurements withstand further experimental scrutiny.https://doi.org/10.1007/JHEP01(2020)194Beyond Standard ModelQuark Masses and SM ParametersFlavor physics |
| spellingShingle | Jordan Bernigaud Ivo de Medeiros Varzielas Jim Talbert Finite family groups for fermionic and leptoquark mixing patterns Journal of High Energy Physics Beyond Standard Model Quark Masses and SM Parameters Flavor physics |
| title | Finite family groups for fermionic and leptoquark mixing patterns |
| title_full | Finite family groups for fermionic and leptoquark mixing patterns |
| title_fullStr | Finite family groups for fermionic and leptoquark mixing patterns |
| title_full_unstemmed | Finite family groups for fermionic and leptoquark mixing patterns |
| title_short | Finite family groups for fermionic and leptoquark mixing patterns |
| title_sort | finite family groups for fermionic and leptoquark mixing patterns |
| topic | Beyond Standard Model Quark Masses and SM Parameters Flavor physics |
| url | https://doi.org/10.1007/JHEP01(2020)194 |
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