The process of baryon number transfer due to string junction propagation in rapidity is considered. It has a significant effect in the net baryon production in pp collisions at mid-rapidities and an even larger effect in the forward hemisphere in the cases of πp and γp interactions. The results of numerical calculations in the framework of the Quark-Gluon String model are in reasonable agreement with the data.

A b s t r a c tWe consider the phenomenological implications of the assumption that baryons are systems of three quarks connected through gluon string junction. The transfer of baryon number in rapidity space due to the string junction propagation is considered in detail. At high energies this process leads to a significant effect on the net baryon production in hN collisions at mid-rapidities. The numerical results for midrapidity inclusive densities of different secondaries in the framework of the Quark-Gluon String Model are in reasonable agreement with the experimental data. One universal value λ ≃ 0.25 for the strangeness suppression parameter correctly describes the yield ratios of Λ/p, Ξ/Λ, and Ω/Ξ. The predictions for pp collisions at LHC energies are also presented.PACS. 25.75.Dw Particle and resonance production 1

The process of Λ-baryon production in πp collisions is considered. The contribution of the string-junction mechanism to the strange baryon production in meson-baryon scattering is analysed. The results of numerical calculations in the framework of the Quark-Gluon String model are in reasonable agreement with the data.

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