Split fermions in extra dimensions and CP violation

@article{Branco2000SplitFI,
  title={Split fermions in extra dimensions and CP violation},
  author={Gustavo C. Branco and Andr'e de Gouvea and Margarida N. Rebelo},
  journal={Physics Letters B},
  year={2000},
  volume={506},
  pages={115-122}
}
We discuss CP violation in the quark sector within a novel approach to the Yukawa puzzle proposed by Arkani-Hamed and Schmaltz, where Yukawa hierarchies result from localising the Standard Model quark field wave-functions, at different positions (in the extra dimensions) in a “fat-brane.” We show that at least two extra dimensions are necessary in order to obtain sufficient CP violation, while reproducing the correct quark mass spectrum and mixing 

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