Towards a realistic composite model of quarks and leptons

  • Li X
  • Marshak R
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Within the context of the 't Hooft anomaly matching scheme, some guiding principles for model building are discussed with an eye to low-energy phenomenology. It is argued that Λch(chiral symmetry breaking scale of the global color-flavor group GCF) ≈ ΛMC(metacolor scale) and ΛgCF(unification scale of the gauge subgroup of GCF) ≲ Λch. As illustrations of the method, two composite models are suggested that can give rise to three or four generations of ordinary quarks and leptons without exotic fermions. © 1986.

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  • Xiaoyuan Li

  • R. E. Marshak

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