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

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dc.creatorMartin, Stephen P.
dc.date2007-07-18
dc.date2007-09-27
dc.date.accessioned2026-07-07T11:17:55Z
dc.date.available2026-07-07T11:17:55Z
dc.descriptionTop 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.
dc.description17 pages. v2: additions to figures 4 and 6
dc.identifierhttps://arxiv.org/abs/0707.2812
dc.identifierhttp://arxiv.org/abs/0707.2812
dc.identifierPhys.Rev.D76:095005,2007
dc.identifierdoi:10.1103/PhysRevD.76.095005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193171
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry
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