2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42935We evaluate the photon spectra from the reaction $πρ\ra πγ$ for the exchange of $π$, $ρ$, $ω$, $ϕ$ and $a_1$ as intermediary mesons. It is found that the contributions from the intermediary $a_1$ is more than any other meson exchange processes up to photon energies 2.5 GeV.2 pages with one eps file for figureHigh Energy Physics - PhenomenologyNuclear Theorytext