2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48465Using the renormalon technique, we estimate higher-twist contributions in deeply virtual Compton scattering and in hard exclusive $π^0$ leptoproduction.4 pages, 2 figures (Latex2e, Postscript, style file b98proc.cls included); talk given in the Baryons'98 conference, Bonn, Germany, Sept. 22-26, 1998High Energy Physics - Phenomenologytext