Chiral 2pi exchange at order four and peripheral NN scattering

Abstract

We calculate the impact of the complete set of two-pion exchange contributions at chiral order four (also known as next-to-next-to-next-to-leading order, N3LO) on peripheral partial waves of nucleon-nucleon scattering. Our calculations are based upon the analytical studies by Kaiser. It turns out that the contribution of order four is substantially smaller than the one of order three, indicating convergence of the chiral expansion. We compare the prediction from chiral pion-exchange with the corresponding one from conventional meson-theory as represented by the Bonn Full Model and find, in general, good agreement. Our calculations provide a sound basis for investigating the issue whether the low-energy constants determined from pi-N lead to reasonable predictions for NN.

22 pages RevTex including 11 figures

References in corpus (5)

• Towards a Perturbative Theory of Nuclear Forces
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• Chiral $2\pi$-exchange NN-potentials: Two-loop contributions
• Chiral 2$\pi$-exchange NN-potentials: Relativistic $1/M^2$-Corrections
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