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In the framework of an extended bag model the magnetic moments, M1 transitionmoments, and decay widths of all ground-state heavy hadrons are calculated. Forthe heavy baryons containing three quarks of different flavors the effect ofhyperfine mixing of the states is taken into account. The additional care istaken to get more accurate theoretical estimates for the mass splittings ofheavy hadrons. The use of such improved values enables one to provide moreaccurate predictions for the decay widths. These values of the hyperfinesplittings between baryons may be also useful for the further experimentalsearches of new heavy hadrons. For instance, we predict$M(\Xi_{cc}^{*})=3695\pm5$ MeV. The agreement of our results for the M1 decayrates with available experimental data is good. We also present a widecomparison of the predictions obtained in our work with the results obtainedusing various other approaches.

Improved predictions for magnetic moments and M1 decay widths of heavy hadrons