A minimal axion model for mass matrices with five texture-zeros

Salazar, Juan Carlos Y Giraldo, Yithsbey Y Rojas, Eduardo (2023) A minimal axion model for mass matrices with five texture-zeros. Eur.Phys.J.C 83 (2023) 7, 638, 83 (638). pp. 1-24.

Text a minimal axion model.pdf Download (1MB)

Resumen

The proposed model sounds intriguing, especially in its aim to reproduce the fermion masses, CKM matrix, and PMNS matrix of the Standard Model (SM) using a Peccei-Queen (PQ) symmetry framework. The requirement of at least 4 Higgs doublets suggests a rich and complex structure, which is necessary to accommodate the desired texture zeros in the mass matrices. The incorporation of additional PQ symmetry alongside the multi-Higgs sector is indeed non-trivial, as it involves navigating through a multitude of constraints imposed by the texture zeros. These texture zeros are pivotal in dictating the observed mass hierarchies and mixing patterns within the fermion sector. However, the presence of flavor-changing neutral currents (FCNC) at the tree level due to non-universal PQ charges poses a significant challenge. FCNC processes are highly constrained by experimental data and often serve as powerful probes for new physics beyond the Standard Model. Addressing these FCNC effects while maintaining consistency with experimental observations will likely require careful fine-tuning of the model parameters or additional mechanisms to suppress FCNC contributions. Overall, the model appears to offer a promising avenue for understanding the diverse scales present in the Standard Model through an extended framework involving multi-Higgs sectors and additional symmetries. However, addressing the FCNC issue will be crucial for the model's viability and compatibility with experimental data.

Tipo de Elemento:	Artículo
Palabras Clave:	Higgs, mass, axion, model
Asunto:	L Educación > L Educación (General) Q Ciencias > Q Science (General)
Division:	Facultad de Ciencias Exactas y Naturales > Programa de Física > Recursos digitales
Depósito de Usuario:	Phd Juan Carlos Salazar
Fecha Deposito:	16 May 2024 22:04
Ultima Modificación:	16 May 2024 22:04
URI:	http://sired.udenar.edu.co/id/eprint/13501

Ver Elemento