Conference paper

Publication year: 1993

Pages: 194-199

Journal: Physica Scripta

Volume number: 48

Issue number: 2

ISSN: 0281-1847

DOI Link: https://doi.org/10.1088/0031-8949/48/2/014

Conference: 2nd International Conference on Particle Production Near Threshold

Publisher: IOP Publishing

Abstract: 

The production of K⁺ or η mesons in proton-nucleus reactions is analysed with respect to primary nucleon-nucleon (NN → NΛK⁺ or NNη) and secondary pion-nucleon (πN → K⁺Λ or ηN) production channels on the basis of a phase-space model employing Hartree-Fock groundstate momentum distributions and free on-shell production processes. The phase-space model adopted here compares well for meson production with more involved simulations based on VUU transport equations. Whereas for K⁺ production in proton-nucleus reactions the secondary channel clearly dominates at subthreshold energies, η mesons arise from primary and secondary processes with roughly the same order of magnitude. Detailed VUU calculations show that the relative weight of the various channels for nucleus-nucleus reactions is quite different as compared to the proton-nucleus case since Δ-resonance excitation and inelastic Δ-nucleon collisions are much more frequent.

Harvard Citation style: Cassing, W., Lang, A., Mosel, U., Vetter, T., Weber, K., Wolf, G., et al. (1993) Meson production in proton-nucleus and nucleus-nucleus collisions, Physica Scripta, 48(2), pp. 194-199. https://doi.org/10.1088/0031-8949/48/2/014

APA Citation style: Cassing, W., Lang, A., Mosel, U., Vetter, T., Weber, K., Wolf, G., Metag, V., Schult, O., Borgs, W., Gotta, D., Hamacher, A., Koch, H., Ohm, H., Pfeiffer, J., Riepe, R., Seyfahrt, H., Sistemich, K., Drüke, V., Filges, D., ...Styczen, B. (1993). Meson production in proton-nucleus and nucleus-nucleus collisions. Physica Scripta. 48(2), 194-199. https://doi.org/10.1088/0031-8949/48/2/014