1998/07/31 by R. A. Arndt, Arndt, R. A., I. I. Strakovsky +5
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #FOS: Physical sciences #Geophysical Methods and Applications #Nuclear Theory (nucl-th) #Seismic Imaging and Inversion Techniques #Ultrasonics and Acoustic Wave Propagation #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9807087
17 pages of text. 3 figures are available from: ftp://clsaid.phys.vt.edu/pub/said/pin/pin
arxiv created 1998/07/31 · openalex publication_date 1998/07/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present the results of energy-dependent and single-energy partial-wave analyses of pi-N elastic scattering data with laboratory kinetic energies below 2.1 GeV. We have considered the effect of adding dispersion-relation constraints required for a more reliable extraction of the pi-N sigma term. The results of these new fits are compared with those generated previously, using a reduced set of constraints, and with a fit which has only utilized forward constraints associated with the S-wave scattering lengths. We compare the results in terms of their resonance spectra and preferred values for the pi-N-N coupling and pi-N sigma term.