Strange Particle Production in Proton-Proton Collisions

An estimate is made for strange particle production in $p-p$ collisions based on the single pion exchange model. For the three-particle final state ($\mathrm{KYN}$), fair agreement with experiment is achieved in both the total cross sections and the momentum and angular distributions of the final particles. For the four-particle final state ($\mathrm{KYN}\pi$), general qualitative agreement is achieved for all total cross sections but one. In this, the case of ${\pi }^0+p+K^{+}+{\Lambda }^0\left({\Sigma }^0\right)$ production, it is suggested that perhaps $Y^{*}$ production in $p-p$ collisions plays an important role.