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arXiv · 1403.2510

The reaction pi N -> pi pi N in chiral effective field theory with explicit Delta(1232) degrees of freedom

D. Siemens·V. Bernard·E. Epelbaum·H. Krebs·Ulf-G. Meißner
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Abstract

The reaction pi N -> pi pi N is studied at tree level up to next-to-leading order in the framework of manifestly covariant baryon chiral perturbation theory with explicit Delta(1232) degrees of freedom. Using total cross section data to determine the relevant low-energy constants, predictions are made for various differential as well as total cross sections at higher energies. A detailed comparison of results based on the heavy-baryon and relativistic formulations of chiral perturbation theory with and without explicit Delta degrees of freedom is given.

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D. Siemens, V. Bernard, E. Epelbaum, H. Krebs, Ulf-G. Meißner. 2014-03-12. The reaction pi N -> pi pi N in chiral effective field theory with explicit Delta(1232) degrees of freedom. https://doi.org/10.1103/physrevc.89.065211

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