arXiv:hep-ph/0702218·v2·High Energy Physics — Phenomenology
The Three Site Model at One-Loop
R. Sekhar Chivukula🇺🇸 · Shinya Matsuzaki🇯🇵 · Elizabeth H. Simmons🇺🇸 · Masaharu Tanabashi🇯🇵
Abstract
In this paper we compute the one-loop chiral logarithmic corrections to all O(p^4) counterterms in the three site Higgsless model. The calculation is performed using the background field method for both the chiral- and gauge-fields, and using Landau gauge for the quantum fluctuations of the gauge fields. The results agree with our previous calculations of the chiral-logarithmic corrections to the S and T parameters in 't Hooft-Feynman gauge. The work reported here includes a complete evaluation of all one-loop divergences in an SU(2) x U(1) nonlinear sigma model, corresponding to an electroweak effective Lagrangian in the absence of custodial symmetry.
Comments: 40 pages, nine included eps figures. Minor corrections made