Inclusive pentaquark and strange baryons production in hadron beam experiments at high energy

We estimate the high-energy behavior of the $\Theta^+$ and $\Lambda(1520)$ production cross sections in inclusive $pp$ collisions using the $K$ exchange diagram. We show that the cross section of the $\Theta^+$-production is suppressed compared to the production of $\Lambda(1520)$. As a byproduct we also estimate the contribution of the $\pi$ exchange diagram for the inclusive $\Lambda(1520)$ production in $\Sigma p$ collisions.