The $\Omega$ and ${\Sigma }^0$-$\Lambda$ transition magnetic moments in QCD sum rules

Abstract

The method of QCD sum rules in the presence of external elctromagnetic fields is used to calculate the $\Omega$ magnetic moment ${\mu }_{{\Omega }^{-}}$ and ${\Sigma }^0$-$\Lambda$ transition magnetic moment ${\mu }_{{\Sigma }^0\Lambda }$, with the susceptibilities obtained previously from the study of octet baryon magnetic moments. The results ${\mu }_{{\Omega }^{-}}=-1.92{\mu }_N$ and ${\mu }_{{\Sigma }^0\Lambda }=1.5{\mu }_N$ are in good agreement with the recent experimental data.