2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190559We present a coupled channel partial wave analysis of nondiffractive S-wave pi+ pi- and K+ K- photoproduction focusing on the KK threshold. Final state interactions are included. We calculate total cross sections, angular and effective mass distributions in both pion-pion and kaon-antikaon channels. Our results indicate that these processes are experimentally measurable and valuable information on the f0(980) resonance structure can be obtained.40 pages including 18 figures, minor modificationsHigh Energy Physics - Phenomenologytext