SOME PROPERTIES OF THE MAGNETIC-MOMENTS OF THE DELTA-S IN QCD

Using the parametrization method we prove that in QCD the magnetic mom ents M(DELTA) of the four DELTA's are almost proportional to their cha rges Q(DELTA) (''almost'' means neglecting a term O(1/300)); that is, writing M(DELTA) = kQ(DELTA) + beta, we have beta/k congruent-to 3 . 1 0(-3). Moreover the value of the coefficient k is not affected by flav or breaking. These properties are, we show, a particular case of a mor e general result: In QCD the flavor properties of the lowest nonstrang e baryonic states valid in unbroken SU3 (flavor) hold ''almost'' exact ly. Finally we compare these results with those obtained by Lagrangian models with 0- meson fields treated as independent degrees of freedom ; the case of the cloudy bag model is illustrated in some detail.