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arXiv · 0707.2812

The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry

Stephen P. Martin
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Abstract

Top squark-mediated annihilation of bino-like neutralinos to top-antitop pairs can play the dominant role in obtaining a thermal relic dark matter abundance in agreement with observations. In a previous paper, it was argued that this can occur naturally in models of compressed supersymmetry, which feature a running gluino mass parameter that is substantially smaller than the wino mass parameter at the scale of apparent gauge coupling unification. Here I study in some more detail the parameter space in which this is viable, and compare to other scenarios for obtaining the observed dark matter density. I then study the possibility of detecting the dark matter directly in future experiments. The prospects are consistently very promising for a wide variety of model parameters within this scenario.

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Stephen P. Martin. 2007-09-27. The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry. https://doi.org/10.1103/physrevd.76.095005

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