Natural topcolor assisted technicolor

@article{Lane1995NaturalTA,
  title={Natural topcolor assisted technicolor},
  author={Kenneth D. Lane and Estia J. Eichten},
  journal={Physics Letters B},
  year={1995},
  volume={352},
  pages={382-387}
}
Abstract We construct a prototype of topcolor-assisted technicolor in which, although both top and bottom quarks acquire some mass from extended technicolor, strong U (1) couplings of technifermions are isospin symmetric and all gauge anomalies vanish. There is a mechanism for mixing between the light and heavy generations and there need be no very light pseudo-Goldstone bosons. 

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