PHYSICS OF ATOMIC NUCLEI, vol.73, no.10, pp.1754-1760, 2010 (SCI-Expanded)
The importance of taking into account the mixing of the heavy cascade baryons Xi and Xi' that have new quantum numbers in analyzing their properties is shown. The Ono quark model is considered by way of example. The masses of the new baryons and the Xi-Xi' mixing angles are obtained. The same approach is applied to the interpolating currents of these baryons within QCD sum rules.