Electroweak Kaluza-Klein dark matter

Thomas Flacke, Dong Woo Kang, Kyoungchul Kong, Gopolang Mohlabeng, Seong Chan Park

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In models with universal extra dimensions (UED), the lightest Kaluza-Klein excitation of neutral electroweak gauge bosons is a stable, weakly interacting massive particle and thus is a candidate for dark matter thanks to Kaluza-Klein parity. We examine concrete model realizations of such dark matter in the context of non-minimal UED extensions. The boundary localized kinetic terms for the electroweak gauge bosons lead to a non-trivial mixing among the first Kaluza-Klein excitations of the SU(2)W and U(1)Y gauge bosons and the resultant low energy phenomenology is rich. We investigate implications of various experiments including low energy electroweak precision measurements, direct and indirect detection of dark matter particles and direct collider searches at the LHC. Notably, we show that the electroweak Kaluza-Klein dark matter can be as heavy as 2.4 TeV, which is significantly higher than 1.3 TeV as is indicated as an upper bound in the minimal UED model.

Original languageEnglish
Article number41
JournalJournal of High Energy Physics
Issue number4
Publication statusPublished - 2017 Apr 1

Bibliographical note

Publisher Copyright:
© 2017, The Author(s).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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