Quasi-Eclectic Modular Flavor Symmetries

TL;DR

This paper introduces quasi-eclectic flavor symmetries, combining modular and traditional symmetries, to improve predictive power in flavor models by controlling kinetic terms, inspired by string theory constructions.

Contribution

It proposes a new class of flavor symmetries as a direct product of modular and traditional symmetries, addressing kinetic term issues in modular flavor models.

Findings

Constructed a version of Feruglio's model with controlled Kaehler terms

Demonstrated spontaneous breaking to a diagonal modular flavor subgroup

Connected the approach to explicit string model features

Abstract

Modular flavor symmetries provide us with a new, promising approach to the flavor problem. However, in their original formulation the kinetic terms of the standard model fields do not have a preferred form, thus introducing additional parameters, which limit the predictive power of this scheme. In this work, we introduce the scheme of quasi-eclectic flavor symmetries as a simple fix. These symmetries are the direct product of a modular and a traditional flavor symmetry, which are spontaneously broken to a diagonal modular flavor subgroup. This allows us to construct a version of Feruglio's model with the Kaehler terms under control. At the same time, the starting point is reminiscent of what one obtains from explicit string models.