2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43651The present-day experimental situation concerning nucleon form factors in the space-like region shows a substantial discrepancy between measurements via the Rosenbluth method and the recoil polarisation technique. More information about nucleon form factors in the time-like region will not only improve poor experimental knowledge there, but it will also shed light on the situation in the space-like region. The radiative return method is a powerful tool to provide that information using data of B- meson factories.Presented at DAPHNE 2004: Physics at meson factories, Frascati, 7-11 June 2004High Energy Physics - Phenomenologytext