Unitarity violation of the CKM matrix in a nonuniversal gauge interaction model

Abstract

We explore the unitarity violation of the CKM matrix in the model in which the third generation fermions are subjected to the separate SU(2)${}_L$ gauge interaction. With the recent LEP and SLC data at $Z$-pole and low-energy neutral current interaction data, the analysis on the parameter space of the model is updated, and the unitary violation is predicted under the constraint.

12 pages, 3 figures