2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/219698The neutralino sector of the U(1) extended SUSY is presented and some collider and cosmology-related phenomenology discussed.4 pages, 2 figures. Presented by J. Kalinowski at the International Linear Collider Workshop 2007: LCWS2007 and ILC2007, DESY, HamburgHigh Energy Physics - Phenomenologytext