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Volume 89, Issue 21

18 November 2002
On the Cover

Predicted positron spectra from annihilation in the galactic halo of Kaluza-Klein gauge bosons, a dark-matter candidate, for different values of the boson mass. The sharp peaks above the estimated background indicate that an upcoming space-based experiment may be able to detect positrons from KK dark-matter.

From the article:

Kaluza-Klein Dark Matter
Hsin-Chia Cheng, Jonathan L. Feng, and Konstantin T. Matchev
Phys. Rev. Lett. 89, 211301 (2002)

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