Measurement of the electron structure function F2e at LEP energies

The hadronic part of the electron structurefunction F-2(e) has been measured for the first time, using e(+)e(-) data collected by the DELPHI experiment at LEP, at centre-of-mass energies of root s = 91.2-209.5 GeV. The data analysis is simpler than that of the measurement of the photon structure function. The electron structurefunction F-2(e) data are compared to predictions of phenomenological modelsbased on the photon structure function. It is shown that the contribution of large target photon virtualities is significant. The data presented can serve as a cross-check of the photon structure functionF-2(gamma) analyses and help in refining existing parameterisations. (C) 2014 The Authors. Published by Elsevier B.V.