We present a three-site Pati-Salam gauge model able to explain the Standard Model flavor hierarchies while, at the same time, accommodating the recent experimental hints of lepton-flavor non-universality in B decays. The model is consistent with low-and high-energy bounds, and predicts a rich spectrum of new states at the TeV scale that could be probed in the near future by the high-experiments at the LHC.
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Bordone et al. (2018) studied this question.