arXiv:nucl-th/9708035·v1·Nuclear Theory
The isoscalar S-wave pi-N scattering length a+ from pi-deuteron scattering
S.R. Beane🇺🇸 · V. Bernard🇫🇷 · T.-S.H. Lee🇺🇸 · Ulf-G. Meißner🇩🇪
Abstract
We consider constraints on the isoscalar S-wave pi-N scattering length a+ from pi-deuteron scattering, to third order in small momenta and pion masses in chiral perturbation theory. To this order, the pi-deuteron scattering length is determined by a+ together with three-body corrections that involve no undetermined parameters. We extract a novel value for a combination of dimension two low-energy constants which is in agreement with previous determinations.
Comments: 6 pages LaTeX, 1 figure (uses epsf)