Mass differences in baryon isomultiplets with Jp=1+ /2

The mass differences in baryon isomultiplets with J^p=1⁺ /2 were calculated with allowance for the contribution of weak interactions to the Okubo Reggeized tadpole models and violated isotopic Lipmanov symmetry.Translated from Izvestiya VUZ. Fizika, Vol. 11, No. 8, pp. 100–105, August, 1968.In conclusion the author expresses his deep appreciation to A. S. Shekhter and his colleagues at the Department of Theoretical Physics at Saratov State University for their discussion and to N. G. Fadeev (Joint Institute for Nuclear Research, Dubna) for his help in performing the numerical calculations.