$g_{K N Λ}$ and $g_{K N Σ}$ from QCD sum rules

Details $g_{K N Λ}$ and $g_{K N Σ}$ from QCD sum rules $g_{K N Λ}$ and $g_{K N Σ}$ from QCD sum rules

1995-08-23

arxiv.org/abs/nucl-th/9508037v2

Phys.Rev.C53:1363-1367,1996

Physics

Nuclear Physics

Nuclear Theory

14 pages (REVTeX) and 2 PS figures

Scientific paper

10.1103/PhysRevC.53.1363

$g_{K N \Lambda}$ and $g_{K N \Sigma}$ are calculated using a QCD sum rule motivated method used by Reinders, Rubinstein and Yazaki to extract Hadron couplings to goldstone bosons. The SU(3) symmetry breaking effects are taken into account by including the contributions from the strange quark mass and assuming different values for the strange and the up down quark condensates. We find $g_{K N \Lambda}/\sqrt{4 \pi} = - 1.96 $ and $g_{K N \Sigma}/\sqrt{4 \pi} = 0.33 $

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