Photoabsorption on nuclei in the shadowing threshold region

Details Photoabsorption on nuclei in the shadowing threshold region Photoabsorption on nuclei in the shadowing threshold region

1998-10-23

arxiv.org/abs/nucl-ex/9810015v1

Phys.Rev. C60 (1999) 064616

Physics

Nuclear Physics

Nuclear Experiment

10 pages, 11 figures

Scientific paper

10.1103/PhysRevC.60.064616

The energy and nuclear mass dependences of the total hadronic cross section in the energy range 0.5-2.6 GeV have been measured at Bonn using the SAPHIR tagged photon beam. The measurement, performed on C, Al, Cu, Sn and Pb, provides the first photoabsorption data in the region 1.2-1.7 GeV. The results show a significant reduction of the photoabsorption strength on the bound nucleon compared to the free nucleon case in the whole energy region. Above 1.2 GeV this reduction decreases with the nuclear density and can be interpreted as a signature of a low energy onset of the shadowing effect.

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