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Electroweak Kaluza-Klein dark matter
Flacke, Thomas Kang, Dong Woo Kong, Kyoungchul Mohlabeng, Gopolang Mokoka Park, Seong Chan
Flacke, Thomas
Kang, Dong Woo
Kong, Kyoungchul
Mohlabeng, Gopolang Mokoka
Park, Seong Chan
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Abstract
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.
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Date
2017-04
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Publisher
Springer Verlag
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Keywords
Phenomenology of Field Theories in Higher Dimensions, Phenomenology of Large extra dimensions
Citation
Flacke, T., Kang, D.W., Kong, K. et al. J. High Energ. Phys. (2017) 2017: 41. https://doi.org/10.1007/JHEP04(2017)041