Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-08-28
Phys.Rev. D67 (2003) 055003
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 3 figures, LaTeX; typos fixed, version to appear in PRD
Scientific paper
10.1103/PhysRevD.67.055003
In models in which all of the Standard Model fields live in extra universal dimensions, the lightest Kaluza-Klein (KK) particle can be stable. Calculations of the one-loop radiative corrections to the masses of the KK modes suggest that the identity of the lightest KK particle (LKP) is mostly the first KK excitation of the hypercharge gauge boson. This LKP is a viable dark matter candidate with an ideal present-day relic abundance if its mass is moderately large, between 600 to 1200 GeV. Such weakly interacting dark matter particles are expected to become gravitationally trapped in large bodies, such as the Sun, and annihilate into neutrinos or other particles that decay into neutrinos. We calculate the annihilation rate, neutrino flux and the resulting event rate in present and future neutrino telescopes. The relatively large mass implies that the neutrino energy spectrum is expected to be well above the energy threshold of AMANDA and IceCube. We find that the event rate in IceCube is between a few to tens of events per year.
Hooper Dan
Kribs Graham D.
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