2024/08/26 by Aojia Xu, Ruitian Li, Xu, Aojia +5
Decision Sciences · Physics and Astronomy · #Scientific Computing and Data Management #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2408.14424
We study the production of hyperon resonances in the π+p→ pa0+ϕ reaction within an effective Lagrangian approach. The model includes the production of Δ(1940) and Δ(1920) in the intermediate state excited by the ρ and p exchanges between the initial proton and π meson. Due to the large contribution of ρ exchange in Δ(1940) production, Δ(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 Δ(1940)→ pa0 and Δ(1920)→ pa0 decays, which will be useful in future experimental studies. This reaction can provide a platform for studying the features of Δ(1940) resonance, especially the coupling to pa0 channel.