Magnetic Moment of the $\Omega^-$ in QCD sumrule (QCDSR)

Abstract

The $\Omega ^-$ magnetic moment was measured very accurately and experimentalists remarked that it differs from the theoretical estimates, thus posing a challenge to the latter. One such estimation uses QCDSR. We revisit this sumrule method, using condensate parameters which were obtained from fitting the differences ($\mu_p - \mu_n$), ($\mu_{\Sigma^+}- \mu_{\Sigma^-}$) and ($\mu_{\Xi^0} - \mu_{\Xi^-}$) and confirm the experimental number. The $\mu_{\Delta^{++}}$ is also found to agree with the experimental estimate.