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Chiral Three-Nucleon Forces from p-wave Pion Production

C. Hanhart·U. van Kolck·G. A. Miller
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Abstract

Production of p-wave pions in nucleon-nucleon collisions is studied according to an improved power counting that embodies the constraints of chiral symmetry. Contributions from the first two non-vanishing orders are calculated. We find reasonable convergence and agreement with data for a spin-triplet cross section in $pp\to ppπ^0$,with no free parameters. Agreement with existing data for a spin-singlet cross section in $pp\to pnπ^+$ constrains a short-range operator shown recently to contribute significantly to the three-nucleon potential.

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C. Hanhart, U. van Kolck, G. A. Miller. 2000-04-13. Chiral Three-Nucleon Forces from p-wave Pion Production. https://doi.org/10.1103/physrevlett.85.2905

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