Flavoured Warped Axion
| Autor: | Quentin Bonnefoy, Emilian Dudas, Tony Gherghetta, Minh Nguyen, Peter Cox |
|---|---|
| Přispěvatelé: | CPHT, CNRS, École Polytechnique, Institut Polytechnique de Paris, F-91128 Palaiseau, France, Dudas, Emilian |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Quark
High Energy Physics - Theory Global Symmetries Nuclear and High Energy Physics Particle physics High Energy Physics::Lattice FOS: Physical sciences warped [axion] Field Theories in Higher Dimensions 7. Clean energy 01 natural sciences Standard Model [PHYS] Physics [physics] High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences ultraviolet U(1) [symmetry] lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ddc:530 010306 general physics Axion Physics [PHYS]Physics [physics] flavor doublet [Higgs particle] 010308 nuclear & particles physics High Energy Physics::Phenomenology spontaneous symmetry breaking axion [model] Fermion 5 [dimension] mass: hierarchy [fermion] High Energy Physics - Phenomenology CP violation High Energy Physics - Theory (hep-th) Beyond Standard Model Higgs boson lcsh:QC770-798 High Energy Physics::Experiment Scalar field Lepton |
| Zdroj: | Journal of high energy physics 04(4), 084 (2021). doi:10.1007/JHEP04(2021)084 Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-38 (2021) HAL Journal of High Energy Physics |
| DOI: | 10.1007/JHEP04(2021)084 |
| Popis: | We consider a 5D extension of the DFSZ axion model that addresses both the axion quality and fermion mass hierarchy problems, and predicts flavour-dependent, off-diagonal axion-fermion couplings. The axion is part of a 5D complex scalar field charged under a U(1)$_{PQ}$ symmetry that is spontaneously broken in the bulk, and is insensitive to explicit PQ breaking on the UV boundary. Bulk Standard Model fermions interact with two Higgs doublets that can be localized on the UV boundary or propagate in the bulk to explain the fermion masses and mixings. When the Higgs doublets are localized on the UV boundary, they induce flavour diagonal couplings between the fermions and the axion. However, when the Higgs doublets propagate in the bulk, the overlap of the axion and fermion profiles generates flavour off-diagonal couplings. The effective scale of these off-diagonal couplings in both the quark and lepton sectors can be as small as $10^{11}$ GeV, and therefore will be probed in future precision flavour experiments. Comment: 40 pages, 13 figures |
| Databáze: | OpenAIRE |
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