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We study the production of hyperon resonances in the ^+p pa₀^+ reaction within an effective Lagrangian approach. The model includes the production of (1940) and (1920) in the intermediate state excited by the and p exchanges between the initial proton and meson. Due to the large contribution of exchange in (1940) production, (1940) is found a significant contribution near the threshold in this reaction. We provide total and differential cross section predictions for the reation and discuss the possible influence of model parameters, off-shell effects and branching ratios for (1940) pa₀ and (1920) pa₀ decays, which will be useful in future experimental studies. This reaction can provide a platform for studying the features of (1940) resonance, especially the coupling to pa₀ channel.
Xu et al. (Mon,) studied this question.
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