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Flavored axions and the flavor problem

Rojas, Eduardo (2020) Flavored axions and the flavor problem. In: 5th ComHEP: Colombian Meeting on High Energy Physics, 30nov-4dic 2020. (Unpublished)

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A Peccei-Quinn~(PQ) symmetry is proposed, in order to generate in the Standard Model~(SM) quark sector a realistic mass matrix ansatz with five texture-zeros. Limiting our analysis to Hermitian mass matrices we show that this requires a minimum of 4 Higgs doublets. This model allows assigning values close to 1 for several Yukawa couplings, giving insight into the origin of the mass scales in the SM. Since the PQ charges are non-universal the model features Flavor-Changing Neutral Currents~(FCNC) at the tree level. We calculate the FCNC couplings of the most general low-energy effective Lagrangian for the axion in a procedure valid for an arbitrary number of Higgs doublets. Finally, we report the allowed region in the parameter space obtained from the measurements of branching ratios of semileptonic meson decays.

Tipo de Elemento: Conferencia o Taller artículo (Speech)
Asunto: Q Ciencias > QC Physics
Division: Facultad de Ciencias Exactas y Naturales > Programa de Física > Eventos
Depósito de Usuario: Prof. Eduardo Rojas
Fecha Deposito: 10 Dec 2021 15:51
Ultima Modificación: 10 Dec 2021 15:51

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