2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39895We consider here the spin independent neutralino-proton cross section for a variety of SUGRA and D-brane models with R-parity invariance. The minimum cross section generally is >~ 1\times 10^{-(9-10)} pb (and hence accessible to future detectors) except for special regions of parameter space where it may drop to =~ 10^{-12} pb. In the latter case the gluino and squarks will be heavy (>~ 1 TeV).5 pages, latex, 3 figures, talk at ICHEP 2000, Osaka, Japan, July 27-Aug. 2, 2000, change in title, no change in contentHigh Energy Physics - Phenomenologytext