Inclusive pentaquark and strange baryons production in pp and Σp collisions at high energy

Details Inclusive pentaquark and strange baryons production in pp and Σp collisions at high energy Inclusive pentaquark and strange baryons production in pp and Σp collisions at high energy

2006-05-13

arxiv.org/abs/hep-ph/0605158v2

Phys.Lett.B644:126-130,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 5 figures, 1 table; RevTeX4

Scientific paper

10.1016/j.physletb.2006.11.019

We calculate the cross sections for the inclusive production in the fragmentation region of $\Theta^+(1540)$ and $\Lambda(1520)$ in $pp$ collisions and $\Lambda(1520)$ in $\Sigma p$ collisions at high energy using the $K$- and $\pi$-meson exchange diagrams, respectively. The contributions of these diagrams survive at asymptotically large energies and are energy independent in this region up to logarithmic and power corrections. We find that inclusive $\Theta^+(1540)$ production should be at the level of 1 $\mu\mathrm{b}\times\Gamma_{\Theta KN}/ 1$ MeV. The ratio of the $\Theta^+(1540)$ over the $\Lambda(1520)$ yields is found to be $\sim 1%$. The fraction of $\Lambda(1520)$ yields in $\Sigma p$ and $pp$ collisions is $\sim 2.7$ that quantitatively agrees with the preliminary result of the Fermilab fixed target experiment E781.

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