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

Shi-Lin Zhu; W-Y. P. Hwang; Y.S. Zhong; Ze-sen Yang; Z. N. Zhou

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

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arxiv nucl-th/9610025 v1 pith:YVNMGBLV submitted 1996-10-18 nucl-th

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

W-Y. P. Hwang , Ze-sen Yang , Y.S. Zhong , Z. N. Zhou , Shi-lin Zhu This is my paper

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abstract

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.

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

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