Gauge $SU(2)_f$ flavour transfers
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866909227398725632 |
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| author | Darmé, Luc Deandrea, Aldo Mahmoudi, Farvah |
| author_facet | Darmé, Luc Deandrea, Aldo Mahmoudi, Farvah |
| contents | We introduce the idea of flavour transfer from a non-abelian horizontal $SU(2)_f$ flavour gauge group embedded in the Standard Model flavour structure. The new flavour vector bosons, in the mass range from the tens of GeV to multi-TeV do not induce large flavour-changing currents and meson oscillations, which usually provide the dominant constraints on this type of structure. Instead, the dominant constraints arise from "flavour-transfer" operators that we will study in details. Several explicit models are presented and their prospects are thoroughly explored, including their phenomenology in the lepton and quark sectors at colliders and lower energy experiments. We finally perform a complete numerical fit in one such scenario, showing that LHC-based lepton-flavour violating searches are competitive with intensity frontier observables. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_09595 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Gauge $SU(2)_f$ flavour transfers Darmé, Luc Deandrea, Aldo Mahmoudi, Farvah High Energy Physics - Phenomenology We introduce the idea of flavour transfer from a non-abelian horizontal $SU(2)_f$ flavour gauge group embedded in the Standard Model flavour structure. The new flavour vector bosons, in the mass range from the tens of GeV to multi-TeV do not induce large flavour-changing currents and meson oscillations, which usually provide the dominant constraints on this type of structure. Instead, the dominant constraints arise from "flavour-transfer" operators that we will study in details. Several explicit models are presented and their prospects are thoroughly explored, including their phenomenology in the lepton and quark sectors at colliders and lower energy experiments. We finally perform a complete numerical fit in one such scenario, showing that LHC-based lepton-flavour violating searches are competitive with intensity frontier observables. |
| title | Gauge $SU(2)_f$ flavour transfers |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2307.09595 |