On the reactions p + p↦p + Λ + K+ and p + p↦p + Σ0 + K+ near thresholds
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The cross-sections for the reactions of the strange production p + p ↦ p + Λ + K+ and p + p ↦ p + Σ0 + K+ near thresholds of the final states pΛK+ and pΣ0K+ are calculated in the effective Lagrangian approach. Our approach is based on the dominant contribution of the one-pion exchange and strong interaction of the colliding protons in the initial state. The theoretical values of the cross-sections agree reasonably well with the experimental data. The polarization properties of the Λ- and Σ0-hyperons are discussed.
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