An angular distribution of negative pions produced on 15 N, leading to the ground state of 15 O, has been measured via the (e, π − )-reaction at E e ≈ 170 MeV. Using virtual photon theory, single-differential cross sections are extracted from the measured double-differential cross sections. The measured data is in good agreement with theoretical calculations in the DWIA model. A clear signature of nuclear EO excitation is found in contrast to previous experiments in a similar reaction on 13 C.
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Inelastic cross sections at 60 and 200 GeV/nucleon are determined in a streamer chamber for 16 O on several nuclear targets. Charged particle multiplicity distributions for inelastic and central collisions are studied and compared with theoretical predictions. The inelastic cross section exhibit a geometrical dependence on nuclear radii. The multiplicity data are governed by the collision geometry. They are consistent with a picture of superposition of independent nucleon-nucleus interactions.
Minimum bias events.
Hard veto and hard Et events.
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The results of an analysis of streamer chamber data from the NA5 experiment are presented. Topological cross sections forpp and\(\bar p\)p interactions and strange neutral particle production at 200 GeV/c have been measured and (\(\bar p\)p−pp) difference cross sections have been determined. Multiplicity moments were calculated.
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