Controlled flavor violation in the MSSM from a unified Δ(27) flavor symmetry

• Published in: The journal of high energy physics Vol. 2018; no. 9; pp. 1 - 22
• Main Authors: de Medeiros Varzielas, Ivo, López-Ibáñez, M. L., Melis, Aurora, Vives, Oscar
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2018; Springer Nature B.V; SpringerOpen
• Subjects: Beyond Standard Model; Classical and Quantum Gravitation; Elementary Particles; Flavor (particle physics); High energy physics; Leptons; Phenomenology; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quark Masses and SM Parameters; Quarks; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Supersymmetric Standard Model; Supersymmetry; Symmetry; Supersymmetric Standard Model; Beyond Standard Model; Quark Masses and SM Parameters
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP09(2018)047

A bstract We study the phenomenology of a unified supersymmetric theory with a flavor symmetry Δ(27). The model accommodates quark and lepton masses, mixing angles and CP phases. In this model, the Dirac and Majorana mass matrices have a unified texture zero structure in the (1, 1) entry that leads to the Gatto-Sartori-Tonin relation between the Cabibbo angle and ratios of the masses in the quark sectors, and to a natural departure from zero of the θ 13 ℓ angle in the lepton sector. We derive the flavor structures of the trilinears and soft mass matrices, and show their general non-universality. This causes large flavor violating effects. As a consequence, the parameter space for this model is constrained, allowing it to be (dis)proven by flavor violation searches in the next decade. Although the results are model specific, we compare them to previous studies to show similar flavor effects (and associated constraints) are expected in general in supersymmetric flavor models, and may be used to distinguish them.