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arXiv:hep-ph/0207125hep-ph

Kaluza-Klein Dark Matter

Hsin-Chia Cheng, Jonathan L. Feng, Konstantin T. Matchev

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Abstract

We propose that cold dark matter is made of Kaluza-Klein particles and explore avenues for its detection. The lightest Kaluza-Klein state is an excellent dark matter candidate if standard model particles propagate in extra dimensions and Kaluza-Klein parity is conserved. We consider Kaluza-Klein gauge bosons. In sharp contrast to the case of supersymmetric dark matter, these annihilate to hard positrons, neutrinos and photons with unsuppressed rates. Direct detection signals are also promising. These conclusions are generic to bosonic dark matter candidates.

arXiv comments
4 pages, 3 figures, discussion of spin-independent cross section clarified, references added, published version
Journal reference
Phys.Rev.Lett.89:211301,2002
DOI
doi:10.1103/PhysRevLett.89.211301
Subjects
hep-phHigh Energy Physics, Phenomenology astro-phAstrophysics hep-exHigh Energy Physics, Experiment

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  1. Bubble Experiment Finds Universal Laws 1 comment

    • The fifth dimension is theoretical, yes. It turns out that you can get classical electricity and magnetism out of the Einstein equations by adding a fifth, rotationally symmetric spatial dimension (https://en.wikipedia.org/wiki/Kaluza%E2%80%93Klein_theory). Some people had hopes…

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