Fermion Mass Hierarchy from the Soft Wall
High Energy Physics - Phenomenology
2009-08-12 v2
Abstract
We develop a 5d model for ElectroWeak physics based on a non compact warped extra dimension of finite length, known as the soft wall scenario, where all the dynamical degrees of freedom propagate in the 5d bulk. We solve the equations of motion and find the allowed spectra, showing that the mass of the lightest fermionic mode behaves as a power law of the effective 4d Yukawa coupling constant, with the exponent being the corresponding fermionic 5d bulk mass. Precisely this non universal behavior allows us to reproduce the hierarchy between the Standard Model (SM) fermion masses (from neutrinos to the top quark) with non-hierarchical fermionic bulk masses.
Cite
@article{arxiv.0905.1095,
title = {Fermion Mass Hierarchy from the Soft Wall},
author = {Antonio Delgado and David Diego},
journal= {arXiv preprint arXiv:0905.1095},
year = {2009}
}
Comments
26 pages, 4 figures, minor changes, one figured added, version to be publish in PRD