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arXiv · 1511.02095

Leading three-baryon forces from SU(3) chiral effective field theory

Stefan Petschauer·Norbert Kaiser·Johann Haidenbauer·Ulf-G. Meißner·Wolfram Weise
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Abstract

Leading three-baryon forces are derived within SU(3) chiral effective field theory. Three classes of irreducible diagrams contribute: three-baryon contact terms, one-meson exchange and two-meson exchange diagrams. We provide the minimal non-relativistic terms of the chiral Lagrangian, that contribute to these diagrams. SU(3) relations are given for the strangeness S=0 and -1 sectors. In the strangeness-zero sector we recover the well-known three-nucleon forces from chiral effective field theory. Explicit expressions for the lambda-nucleon-nucleon chiral potential in isospin space are presented.

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Stefan Petschauer, Norbert Kaiser, Johann Haidenbauer, Ulf-G. Meißner, Wolfram Weise. 2016-01-18. Leading three-baryon forces from SU(3) chiral effective field theory. https://doi.org/10.1103/physrevc.93.014001

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