Meson Exchange Currents in Pion Double Charge Exchange at High Energies
Abstract
In this letter we study the high energy behavior of the forward differential cross section for the 18O(π+,π-)18Ne double charge exchange reaction. We have evaluated the sequential and the meson exchange current mechanisms. The meson exchange current contribution shows a very weak energy dependence and becomes relevant at incident pion kinetic energies above 600 MeV.
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