2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114896We study the processes e+e- -> (J/psi gamma gamma) gamma and e+e- -> (J/psi pi- pi+) gamma where the hard photon radiated from an initial e+e- collision with center-of-mass (CM) energy near 10.58 GeV is detected. In the final state J/psi gamma gamma we consider J/psi pi0, J/psi eta, chi_{c1} gamma, and chi_{c2} gamma candidates. The invariant mass of the hadronic final state defines the effective e+e- CM energy in each event, so these data can be compared with direct e+e- measurements. We report 90% CL upper limits for the integrated cross section times branching fractions of the J/psi gamma gamma channels in the Y(4260) mass region.16 pages, 6 figures; submitted to the 33rd International Conference on High-Energy Physics (ICHEP 06), Moscow, Russia, July 26-August 2, 2006High Energy Physics - Experimenttext