QCD Sum Rules: Isospin Symmetry Breakings in Pion-Nucleon Couplings

Details QCD Sum Rules: Isospin Symmetry Breakings in Pion-Nucleon Couplings QCD Sum Rules: Isospin Symmetry Breakings in Pion-Nucleon Couplings

1996-10-18

arxiv.org/abs/nucl-th/9610025v1

Phys.Rev.C57:61-68,1998

Physics

Nuclear Physics

Nuclear Theory

14 pages, 4 figures (upon request), LateX

Scientific paper

10.1103/PhysRevC.57.61

We use the method of QCD sum rules in the presence of an external pion field
to investigate isospin symmetry breakings in pion-nucleon couplings. Possible
manifestations of such isospin symmetry breaking are examined in the context of
low-energy nucleon-nucleon ($NN$) scattering. We discuss numerical results in
relation to both the existing data and other theoretical predictions.

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