Family Dependence in 331 Models.

Using experimental results at the Z-pole and atomic parity violation, we perform a χ2 fit at 95% CL to obtain family-dependent bounds to Z′ mass and Z-Z′ mixing angle in the framework of the main versions of 331 models. The allowed regions depend on the assignment of the quark families into different representations that cancel anomalies. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]