1997/03/11 by Mijo Batinic, Mijo Batinić, I. Dadić +13
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #Particle accelerators and beam dynamics #Seismic Imaging and Inversion Techniques #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9703023
21 pages (latex) + 11 figures (PostScript)
arxiv created 1997/03/11 · openalex publication_date 1997/03/11 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
A three-channel, multi-resonance, unitary model developed in 1995 is used to determine the πN → ηN and ηN → ηN amplitudes using as input the latest data for the dominant S11 πN elastic scattering partial wave following suggestions of Prof. G. Höhler. The sign error in the numerical evaluation of the dispersion integral in the original publication is eliminated. The remaining weighted data set for the πN → ηN total and differential cross sections is used as in the original publication. The correction of the numerical error influences the ηN cusp effect and improves the quality of the fit to the input data. However, our new result for the ηN scattering length, aηN = (0.717 ± 0.030) + i (0.263 ± 0.025) fm, is a sole consequence of the correction of the S11 input and suggests that the ηd system is unbound or loosely bound.