SUSY Breaking Constraints on Modular flavor $S_3$ Invariant $SU(5)$ GUT Model

Abstract

Modular flavor symmetry can be used to explain the quark and lepton flavor structures. The SUSY partners of quarks and leptons, which share the same superpotential with the quarks and leptons, will also be constrained by the modular flavor structure and show a different flavor(mixing) pattern at the GUT scale. So, in realistic modular flavor models with SUSY completion, constraints from the collider and DM constraints can also be used to constrain the possible values of the modulus parameter. In the first part of this work, we discuss the possibility that the $S_3$ modular symmetry can be preserved by the fixed points of $T^2/Z_N$ orbifold, especially from $T^2/Z_2$. To illustrate the additional constraints from collider etc on modular flavor symmetry models, we take the simplest UV SUSY-completion $S_3$ modular invariance SU(5) GUT model as an example with generalized gravity mediation SUSY breaking mechanism. We find that such constraints can indeed be useful to rule out a large portion of the modulus parameters. Our numerical results show that the UV-completed model can account for both the SM (plus neutrino) flavor structure and the collider, DM constraints. Such discussions can also be applied straightforwardly to other modular flavor symmetry models, such as $A_4$ or $S_4$ models.

16 pages,3 figures

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• Subcritical regime of hybrid inflation with modular $A_4$ symmetry
• Modular flavor symmetry and vector-valued modular forms
• Electron EDM arising from modulus $\tau$ in the supersymmetric modular invariant flavor models
• Two A5 modular symmetries for Golden Ratio 2 mixing
• Minimal Modular Flavor Symmetry and Lepton Textures Near Fixed Points
• Quark and lepton flavor model with leptoquarks in a modular $A_4$ symmetry