QCD sum rules for hyperon-nucleon interactions

  title={QCD sum rules for hyperon-nucleon interactions},
  author={Yoshihiko Kondo and Osamu Morimatsu},
  journal={Physical Review C},
We investigate the hyperon-nucleon interactions in the QCD sum rule starting from the nucleon matrix element of the hyperon correlation function. Through the dispersion relation, the correlation function in the operator product expansion (OPE) is related with its integral over the physical energy region. The dispersion integral around the hyperon-nucleon ($YN$) threshold is identified as a measure of the interaction strength in the $YN$ channel. The Wilson coefficients of the OPE for the… 
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