A vector-like fourth generation with a discrete symmetry from Split-UED

Kyoungchul Kong, Seong Chan Park, Thomas G. Rizzo

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Split-UED allows for the possibility that the lowest lying KK excitations of the Standard Model fermions can be much lighter than the corresponding gauge or Higgs KK states. This can happen provided the fermion bulk masses are chosen to be large, in units of the inverse compactification radius, 1/R, and negative. In this setup, all of the other KK states would be effectively decoupled from low energy physics. Such a scenario would then lead to an apparent vector-like fourth generation with an associated discrete symmetry that allows us to accommodate a dark matter candidate. In this paper the rather unique phenomenology presented by this picture will be examined.

Original languageEnglish
Article number59
JournalJournal of High Energy Physics
Issue number7
Publication statusPublished - 2010

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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