Bulk Fermions in Soft Wall Models

Understand

We discuss the implementation of bulk fermions in soft wall models.

• The introduction of a position dependent bulk mass allows for a well defined Kaluza-Klein expansion for bulk fermions.
• The realization of flavor and the contribution to electroweak precision observables are shown to be very similar to the hard wall case.
• The bounds from electroweak precision test are however milder with gauge boson Kaluza-Klein modes as light as $\sim 1.5$ TeV compatible with current experimental bounds.