2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117657The QCD analysis of the recent experimental data (L3@LEP) of the hard exclusive $ρρ$ production in two photon collisions shows that these data can be understood as a signal for the existence of an exotic isotensor resonance with a mass around $1.5 {\rm GeV}$. We also argue that hard exclusive reactions are a powerful tool for an experimental study of exotic hybrid mesons with $J^{PC}=1^{-+}$.Talk given at XXXIII International Conference on High Energy Physics, July 26 - August 2, Moscow, RussiaHigh Energy Physics - Phenomenologytext