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arXiv · hep-ph/9307241

Baryon-Pion Couplings from Large-N QCD

Roger Dashen·Aneesh V. Manohar
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Abstract

We derive a set of consistency conditions for the pion-baryon coupling constants in the large-N limit of QCD. The consistency conditions have a unique solution which are precisely the values for the pion-baryon coupling constants in the Skyrme model. We also prove that non-relativistic $SU(2N_f)$ spin-flavor symmetry (where $N_f$ is the number of light flavors) is a symmetry of the baryon-pion couplings in the large-N limit of QCD. The symmetry breaking corrections to the pion-baryon couplings vanish to first order in $1/N$. Consistency conditions for other couplings, such as the magnetic moments are also derived.

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Roger Dashen, Aneesh V. Manohar. 1993-07-11. Baryon-Pion Couplings from Large-N QCD. https://doi.org/10.1016/0370-2693(93)91635-z

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