Journalartikel

Jahr der Veröffentlichung: 2013

Zeitschrift: Physical Review C

Bandnummer: 87

Heftnummer: 1

ISSN: 0556-2813

eISSN: 1089-490X

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.87.015201

Verlag: American Physical Society

Abstract: 
We perform an updated coupled-channel analysis of eta-meson production including all recent photoproduction data on the proton. The dip observed in the differential cross sections at c.m. energies W = 1.68 GeV is explained by destructive interference between the S-11(1535) and S-11(1560) states. The effect from P-11(1710) is found to be small but still important to reproduce the correct shape of the differential cross section. For the pi(-) N -> eta N scattering we suggest a reaction mechanism in terms of the S-11(1535), S-11(1560), and P-11(1710) states. Our conclusion on the importance of the S-11(1535), S-11(1560), and P-11(1710) resonances in the eta-production reactions is in line with our previous results. No strong indication for a narrow state with a width of 15 MeV and the mass of 1680 MeV is found in the analysis. eta N scattering length is extracted and discussed. DOI: 10.1103/PhysRevC.87.015201

Harvard-Zitierstil: Shklyar, V., Lenske, H. and Mosel, U. (2013) η-meson production in the resonance-energy region, Physical Review C, 87(1), Article 015201. https://doi.org/10.1103/PhysRevC.87.015201

APA-Zitierstil: Shklyar, V., Lenske, H., & Mosel, U. (2013). η-meson production in the resonance-energy region. Physical Review C. 87(1), Article 015201. https://doi.org/10.1103/PhysRevC.87.015201