Flavor hierarchies, flavor anomalies, and Higgs mass from a warped extra dimension
Javier Fuentes-Martín (Departamento de Física Teórica y del Cosmos, Universidad de Granada, E–18071 Granada, Spain); Gino Isidori (Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland)
; Javier M. Lizana (Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland); Nudžeim Selimović (Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland); Ben A. Stefanek (Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland)
The recent B-meson anomalies are coherently explained at the TeV scale by 4321 gauge models with hierarchical couplings reminiscent of the Standard Model Yukawas. We show that such models arise as the low-energy limit of a complete theory of flavor, based on a warped fifth dimension where each Standard Model family is quasi-localized on a different brane. The Higgs is identified as a pseudo-Nambu-Goldstone boson emerging from the same dynamics responsible for 4321 symmetry breaking. This novel construction unifies quarks and leptons in a flavor non-universal manner, provides a natural description of flavor hierarchies, and addresses the electroweak hierarchy problem.
