Indirect, Direct and Collider Detection of Neutralino Dark Matter

Abstract

We examine the prospects for supersymmetry discovery in the minimal supergravity (mSUGRA) model via indirect detection of neutralino dark matter. We investigate rates for muon detection in neutrino telescopes, and detection of photons, positrons and anti-protons by balloon and space based experiments. We compare the discovery reach in these channels with the reach for direct detection of dark matter, and also with the reach of collider experiments such as Fermilab Tevatron, CERN LHC and a $\sqrt{s}=0.5-1$ TeV linear $e^{+}{e}^{-}$ collider. We pay particular attention to regions of model parameter space in accord with recent WMAP results on the dark matter density of the universe. We find that the IceCube neutrino telescope as well as 3rd generation direct dark matter detection experiments should be able to cover the {\it entire} WMAP allowed portion of the hyperbolic branch/focus point (HB/FP) region of parameter space. This is in contrast to the case of the CERN LHC or a linear $e^{+}{e}^{-}$ collider, where only a fraction of the HB/FP region can be accessed. In addition, we show that detection of $\gamma$s, $e^{+}$s and $\bar{p}$s should occur in much of the HB/FP region, as well as in the low $m_{1/2}$ portion of the $A$ annihilation funnel, and will be complementary to searches via colliders in these regions.

23 pages including 7 EPS figures; revised version in accord with published version with updated reach plots

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