2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43684In this work we investigate the consequences of the Jaffe and Wilczek diquark model in the framework of QCD sum rules. An analysis of the Theta^+(1540) as (ud)^2\bar{s} state shows that the mass of the pentaquark is compatible with the experimentally measured value. The mass difference between the Theta^+ and the pentaquark with the quantum numbers of the nucleon amounts to 70 MeV and is consistent with the interpretation of the N(1440) as a pentaquark.4 pages, 2 figures, talk given at the International QCD Conference, Montpellier, July 2004High Energy Physics - Phenomenologytext