2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/207371This report describes the first search for top squark pair production in the channel stop_1 stopbar_1 -> b bbar chargino_1 chargino_1 -> ee+jets+MEt using 74.9 +- 8.9 pb^-1 of data collected using the D0 detector. A 95% confidence level upper limit on sigma*B is presented. The limit is above the theoretical expectation for sigma*B for this process, but does show the sensitivity of the current D0 data set to a particular topology for new physics.Five pages, including three figures, submitted to PRD Brief ReportsHigh Energy Physics - Experimenttext