Measurement of the photon structure function F-2(gamma) with the L3 detector at LEP

摘要

The e(+)e(-) -> e(+)e(-)hadrons reaction, where one of the two electrons is detected in a low polar-angle calorimeter, is analysed in order to measure the hadronic photon structure function F-2(gamma) The full high-energy and high-luminosity data set, collected with the U detector at centre-of-mass energies 189 GeV <= root s <= 209 GeV, corresponding to an integrated luminosity of 608 pbis used. The Q(2) range 11 GeV2 <= Q(2) <= 34 GeV2 and the x range 0.006 <= x <= 0.556 are considered. The data are compared with recent parton density functions. (c) 2005 Published by Elsevier B.V.