Elastic scattering analyses and dispersion relation constraints
Nuclear Theory
2007-05-23 v1
Abstract
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.
Cite
@article{arxiv.nucl-th/9807087,
title = {Elastic scattering analyses and dispersion relation constraints},
author = {R. A. Arndt and I. I. Strakovsky and R. L. Workman and M. M. Pavan},
journal= {arXiv preprint arXiv:nucl-th/9807087},
year = {2007}
}
Comments
17 pages of text. 3 figures are available from: ftp://clsaid.phys.vt.edu/pub/said/pin/pin