We propose a scale-invariant hypercolor model with a nontrivial ultraviolet fixed point having large anomalous dimension, which resolves the notorious flavor-changing neutral-current problem in hypercolor models, and at the same time predicts a JPC=0⁺⁺ Nambu-Goldstone boson (dilaton) associated with the spontaneous breakdown of the scale invariance.
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Yamawaki et al. (1986) studied this question.
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