${\eta }^{\prime }$ Production in Proton-Proton Collisions near Threshold

Abstract

Within the one-pion exchange model we calculate the near-threshold ${\eta }^{\prime }$ production from $pp$ collisions including the final state interaction between the protons. Since the description of the data is quite well we conclude that $\eta ,\rho$ or $\omega$ exchange currents either play no role or cancel each other to a large extent in this reaction.

7 pages, LaTeX, including 3 ps-figures, UGI-98-20. To be pub. EPJ-A

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