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arXiv · hep-ph/9908452

Hyperon-nucleon coupling from QCD sum rules

M. E. Bracco·F. S. Navarra·M. Nielsen
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Abstract

The NKY coupling constant for $Y = Λ$ and $Σ$ is evaluated in a QCD sum rule calculation. We discuss and extend the result of a previous analysis in the $\rlap{/}{q}iγ_5$ structure and compare it with the result obtained with the use of the $γ_5 σ_{μν}$ structure. We find a huge violation of the SU(3) symmetry in the $γ_5 σ_{μν}$ structure.

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M. E. Bracco, F. S. Navarra, M. Nielsen. 1999-08-24. Hyperon-nucleon coupling from QCD sum rules. https://doi.org/10.1016/s0920-5632(00)00597-1

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