Journalartikel

Jahr der Veröffentlichung: 2000

Seiten: 277-285

Zeitschrift: The European Physical Journal A

Bandnummer: 9

Heftnummer: 2

ISSN: 1434-6001

eISSN: 1434-601X

DOI Link: https://doi.org/10.1007/s100500070045

Verlag: Springer

Abstract: 
We investigate the reactions piN --> a(0)N and pp --> da(0)(+) near threshold and at medium energies. An effective Lagragian approach and the Regge pole model are applied to analyze different contributions to the cross-section of the reaction piN --> a(0)N. These results are used to calculate the differential and total cross-sections of the reaction pp --> da(0)(+) within the framework of the two-step model in which two nucleons produce an a(0)-meson via pi -meson exchange and fuse to a deuteron. The necessity of new measurements on a(0) production and branching fractions (of its decay to the K (K) over bar and pi eta channels) is emphasized for clarifying the a(0) structure. Detailed predictions for the reaction pp --> da(0)(+) are presented for the energy regime of the proton synchrotron COSY-Julich.

Harvard-Zitierstil: Grishina, V., Kondratyuk, L., Bratkovskaya, E., Büscher, M. and Cassing, W. (2000) Production of a_o-mesons in the reactions πN → a_oN and pp → da_o⁺ at GeV energies, The European Physical Journal A, 9(2), pp. 277-285. https://doi.org/10.1007/s100500070045

APA-Zitierstil: Grishina, V., Kondratyuk, L., Bratkovskaya, E., Büscher, M., & Cassing, W. (2000). Production of a_o-mesons in the reactions πN → a_oN and pp → da_o⁺ at GeV energies. The European Physical Journal A. 9(2), 277-285. https://doi.org/10.1007/s100500070045