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Comparison of inelastic electron and positron scattering cross sections on 12C and 27Al |
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| Authors: | S. Hartwig F.H. Heimlich G. Huber E. Rössle J. Bleckwenn M. Köbberling J. Moritz K.H. Schmidt D. Wegener D. Zeller P. David H. Mommsen |
| Affiliation: | Fakultät für Physik der Universität Freiburg, Breisgau, Germany;Deutsches Elektronensynchrotron DESY, Hamburg, Germany;Kernforschungszentrum und Universität Karlsruhe, Institut für Experimentelle Kernphysik, Karlsruhe, Germany;Institut für Kern- und Strahlenphysik der Universität Bonn, Germany |
| Abstract: | The ratio R = σ+/σ? of the cross sections for inelastic and electron scattering on 12C and 27Al has been measured for four momentum transfers 0.08 (GeV/c)2 ?q2 ?0.45 (GeV/c)2 of the virtual photon and invariant masses 0.95 GeV ? W ? 3.3GeV of the hadronic system. The mean value of the ratio is R = (1.005 ± 0.027). No q2, respectively, W dependence of the ratio is observed. |
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