Elastic pion-nucleon Scattering to O(p^3) in Heavy Baryon Chiral Perturbation Theory

Preprint

25 June 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9704415

Abstract

The elastic pi-N scattering amplitude in the isospin limit is calculated in the framework of heavy baryon chiral perturbation theory, up to the third order. Threshold parameters like scattering lengths, volumes, effective ranges, etc. are compared with data. All relevant low energy constants are fixed from the available pion-nucleon data. A clear improvement in the description of data is observed, when going from the first two orders in the chiral expansion to the third one. The importance of even higher orders is suggested by the result.

Keywords

SCATTERING AMPLITUDE
CHIRAL PERTURBATION
PERTURBATION THEORY
BARYON CHIRAL
HEAVY BARYON
PION NUCLEON

All Related Versions

Version 1, 1997-04-28, ArXiv
Version 2, 1997-06-25, ArXiv
Published version: The European Physical Journal C, 2 (1), 181.

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