2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/154206The Z^+(4430) observed by Belle is explained naturally as a threshold cusp in the D*(2010)Dbar_1(2420) system.3 pages, 1 figure Withdrawn and replaced with 0802.0934 which gives a more extensive discussionHigh Energy Physics - Phenomenologytext