Analysis of the pion form factor in the time-like region

A model independent analysis of the pion electromagnetic form factor is performed using the available space-like and time-like data. The aim is to obtain information on the structure in the time-like region above the πω threshold. The phase below is assumed to be known from ππ scattering. In the process of analytic continuation the authors use as stabilizing lever different types of bounds on the derivative of the form factor. (Auth.)