Testing Validity of the Isobaric Multiplet Mass Equation in T = 3 Isospin Septet

The validity of the isobaric multiplet mass equation(IMME) is of foundamental importance due to the basic concept of isospin. Recently, a serious breakdown was found in the A = 54, T = 3 isospin septet, the largest isospin system where the validity of IMME have been tested up to now. Inspired by this work, I revist the mass of some isobaric analogue states with the help of recent results from advanced mass measurement experiment. It is found that the IMME holds well in A = 50 and 46 isospin septet and the coefficients of IMME also follow the systematic trends. Mass excess value for ⁵⁰Ni and ⁴⁶Fe, is predicted to be -3932(20) keV and 898(67) keV, respectively.