Model-Independent Extraction of the N*\(1535\) Electrostrong Form Factor from Eta Electroproduction

We analyze the existing data on electroproduction of eta mesons in the region of W~1.5 GeV, and extract an electrostrong form factor for the N^*\(1535\) electroexcitation and decay into the η-N channel, which is found to be relatively insensitive to the uncertainties of the effective Lagrangian approach. This extracted quantity is of interest in the QCD description of relevant baryons.