Affordable Access

Publisher Website

Effective fermion couplings in warped 5D Higgsless theories

  • Bechi, J.
  • Casalbuoni, R.
  • De Curtis, S.
  • Dominici, D.
Published Article
Publication Date
Jul 28, 2006
Submission Date
Jul 28, 2006
DOI: 10.1103/PhysRevD.74.095002
External links


We consider a five dimensional SU(2) gauge theory with fermions in the bulk and with additional SU(2) and U(1) kinetic terms on the branes. The electroweak breaking is obtained by boundary conditions. After deconstruction, fermions in the bulk are eliminated by using their equations of motion. In this way Standard Model fermion mass terms and direct couplings to the internal gauge bosons of the moose are generated. The presence of these new couplings gives a new contribution to the epsilon_3 parameter in addition to the gauge boson term. This allows the possibility of a cancellation between the two contributions, which can be local (site by site) or global. Going back to the continuum, we show that the implementation of local cancellation in any generic warped metric leaves massless fermions. This is due to the presence of one horizon on the infrared brane. However we can require a global cancellation of the new physics contributions to the epsilon_3 parameter. This fixes relations among the warp factor and the parameters of the fermion and gauge sectors.

Report this publication


Seen <100 times