Role ofN*(1650)in the near thresholdpp→pΛK+andpp→pΣ0K+reactions

2000/10/31 by R. Shyam, G. Penner, U. Mosel · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevc.63.022202

published as Phys.Rev. C63 (2001) 022202 · Revised version, Fig. 4 is updated with the revised data, to appear in Phys. Rev. C (Rapid Communications)

arxiv created 2000/12/26 · openalex publication_date 2001/01/24 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We investigate the p\stackrel\ensuremath→pp\ensuremathΛK⁺ and p\stackrel\ensuremath→pp\ensuremathΣ⁰K⁺ reactions at beam energies near their thresholds within an effective Lagrangian model, where the strangeness production proceeds via the excitation of N^*(1650), N^*(1710), and N^*(1720) baryonic resonances. It is found that the N^*(1650) resonance dominates both these reactions at near threshold energies. The contributions from this resonance together with the final state interaction among the outgoing particles are able to explain the observed beam energy dependence of the ratio of the cross sections of the two reactions in the near threshold region.

Citations

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