Tagging the p n -> d phi reaction by backward protons in p d -> d phi psp processes
Abstract
The reaction p d -> d phi psp is studied within the Bethe-Salpeter formalism. Under special kinematical conditions (slow backward spectator proton psp and fast forward deuteron) relevant for forthcoming experiments at COSY, the cross section and a set of polarization observables factorize in the contribution of the pure subprocess p n -> d phi and a contribution stemming from deuteron quantities and kinematical factors. This provides a theoretical basis for studying threshold-near processes at quasi-free neutrons.
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