2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45568It is shown that the longitudinal double spin asymmetry $A_{ll}$ in polarized diffractive $l p \to l p+Q \bar Q$ reaction depends strongly on the spin structure of quark-pomeron vertex. The SMC spin facilities may be one of the best place to perform such experiment.5 pages, Latex, 3 figures are appended at the end (as uufile)High Energy Physics - PhenomenologyDouble spin asymmetry in diffractive $Q \bar Q$ production at SMC energies and quark-pomeron vertex structuretext