Z to b bbar and Chiral Currents in Higgsless Models

Understand

In this note we compute the flavor-dependent chiral-logarithmic corrections to the decay Z to b bbar in the three site Higgsless model.

• We compute these corrections diagrammatically in the "gaugeless" limit in which the electroweak couplings vanish.
• We also compute the chiral-logarithmic corrections to the decay Z to b bbar using an RGE analysis in effective field theory, and show that the results agree.
• In the process of this computation, we compute the form of the chiral current in the gaugeless limit of the three-site model, and consider the generalization to the N-site case.