Journal Article

PreJuSER-28819

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Pion-nucleon scattering in chiral perturbation theory II : fourth order calculation

Fettes, N. ; Meissner, U. G.FZJ*

2000
North-Holland Publ. Co. Amsterdam

This record in other databases:

Abstract: We analyze elastic pion-nucleon scattering to fourth order in heavy-baryon chiral perturbation theory, extending the third-order study published in Nucl. Phys. A 640 (1998) 199. We use various partial-wave analyses to pin down the low-energy constants from data in the physical region. The S-wave scattering lengths are consistent with recent determinations from pionic hydrogen and deuterium. We find an improved description of the P-waves. We also discuss the pion-nucleon sigma term and problems related to the prediction of the subthreshold parameters. (C) 2000 Elsevier Science B.V. All rights reserved.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Institut für Kernphysik (IKP)

Research Program(s):

1. Theoretische Kernphysik (20.80.0)

Appears in the scientific report 2000

---