Geometric origin of CP violation in an extra-dimensional brane world

David Dooling, Damien A. Easson, Kyungsik Kang

Research output: Contribution to journalArticlepeer-review


The fermion mass hierarchy and finding a predictive mechanism of the flavor mixing parameters remain two of the least understood puzzles facing particle physics today. In this work, we demonstrate how the realization of the Dirac algebra in the presence of two extra spatial dimensions leads to complex fermion field profiles in the extra dimensions. Dimensionally reducing to four dimensions leads to complex quark mass matrices in such a fashion that CP violation necessarily follows. We also present the generalization of the Randall-Sundrum scenario to the case of a multi-brane, six-dimensional brane-world and discuss how multi-brane worlds may shed light on the generation index of the SM matter content.

Original languageEnglish (US)
Pages (from-to)983-1005
Number of pages23
JournalJournal of High Energy Physics
Issue number7
StatePublished - Jul 1 2002
Externally publishedYes


  • CP violation
  • D-branes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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