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

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arxiv 1511.02095 v2 pith:M7XB4OVL submitted 2015-11-06 nucl-th

Stefan Petschauer , Norbert Kaiser , Johann Haidenbauer , Ulf-G. Mei{ss}ner , Wolfram Weise This is my paper
classification nucl-th
keywords chiraldiagramseffectivefieldforcestheorythree-baryoncontribute
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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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