Inclusive pion double charge exchange on Oxygen(16) at 0.6-1.1 GeV

Details Inclusive pion double charge exchange on Oxygen(16) at 0.6-1.1 GeV Inclusive pion double charge exchange on Oxygen(16) at 0.6-1.1 GeV

2002-11-17

arxiv.org/abs/nucl-ex/0211016v2

Nucl.Phys.A723:389-407,2003

Physics

Nuclear Physics

Nuclear Experiment

27 pages, 13 figures. Minor corrections, one figure added. Accepted in NPA

Scientific paper

10.1016/S0375-9474(03)01322-8

The inclusive pion double charge exchange (DCX) on oxygen nuclei has been measured in the region where additional pion production is kinematically forbidden. The experiment was performed at ITEP PS at incident pi- kinetic energies T_0= 0.59, 0.75 and 1.1 GeV. The integrated forward differential cross section was found to decrease with energy slowly. At 1.1 GeV it exceeds the theoretical prediction within the conventional sequential single charge exchange mechanism with a neutral pion in the intermediate state (Glauber elastic rescattering) by about half an order of magnitude. The sequential mechanism with two pions in the intermediate state (Glauber inelastic rescatterings), which was proposed recently, seems to be able to explain the observed slow energy dependence and allows to predict the DCX cross section for higher energies.

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