2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48729It is shown that instantons provide a natural mechanism to explain an unusual azimuthal dependence of the production of the even-parity glueball candidates in central pp collision. A different azimuthal dependence for instanton-induced production of the odd-parity glueballs is predicted.5 pages, Latex, 3 figuresHigh Energy Physics - Phenomenologytext