Multi-Scale 5D Models for Flavor Hierarchies and Anomalies

TL;DR

This paper explores a multi-scale 5D warped model that explains flavor hierarchies, addresses the hierarchy problem, and connects to 4321 gauge models to explain B-meson anomalies.

Contribution

It introduces a higher-dimensional framework that naturally generates flavor hierarchies and links them to TeV-scale gauge models addressing B-meson anomalies.

Findings

Provides a warped 5D model with three branes for flavor hierarchies

Connects Higgs as a pseudo-Nambu-Goldstone boson to flavor dynamics

Offers a unified approach to flavor, hierarchy problem, and B-anomalies

Abstract

So-called 4321 gauge models at the TeV scale with hierarchical couplings reminiscent of the Standard Model Yukawas offer a coherent combined explanation of the recent $B$-meson anomalies. In these proceedings, based on arXiv:2203.01952, we discuss how such models could arise from a multi-scale theory of flavor, based on a warped fifth dimension with three branes. This higher dimensional construction provides a natural description of flavor hierarchies, addresses the electroweak hierarchy problem, and allows for the Higgs to be identified as a pseudo-Nambu-Goldstone boson emerging from the same dynamics responsible for the breaking of 4321 gauge symmetry.