Isoscalar S-wave π-N scattering length a+ from π-deuteron scattering

Phys. Rev. C 57, 424 – Published 1 January 1998
S. R. Beane, V. Bernard, T.-S. H. Lee, and Ulf-G. Meißner


We consider constraints on the isoscalar S-wave π-N scattering length a+ from π-deuteron scattering, to third order in small momenta and pion masses in chiral perturbation theory. To this order, the π-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.


  • Received 19 August 1997
  • Published in the issue dated January 1998

© 1998 The American Physical Society

Authors & Affiliations

S. R. Beane1,*, V. Bernard2,†, T.-S. H. Lee3,‡, and Ulf-G. Meißner4,§

  • 1Department of Physics, University of Maryland, College Park, Maryland 20742
  • 2Laboratoire de Physique Théorique, Université Louis Pasteur, F-67037 Strasbourg Cedex 2, France
  • 3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
  • 4Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany

  • *Electronic address:
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