Flavour alignment in multi-Higgs-doublet models

@article{Peuelas2017FlavourAI,
  title={Flavour alignment in multi-Higgs-doublet models},
  author={Ana Bel{\'e}n Cabrejas Pe{\~n}uelas and Antonio Pich},
  journal={Journal of High Energy Physics},
  year={2017},
  volume={2017},
  pages={1-34}
}
A bstractExtended electroweak scalar sectors containing several doublet multiplets require flavour-aligned Yukawa matrices to prevent the appearance at tree level of unwanted flavour-changing neutral-current transitions. We analyse the misalignment induced by one-loop quantum corrections and explore possible generalizations of the alignment condition and their compatibility with current experimental constraints. The hypothesis of flavour alignment at a high scale turns out to be consistent with… 

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