Mirror asymmetry in allowed gamow-teller β-decay

摘要: The difference in ft values for mirror Gamow--Teller BETA decays was estimated the p-shell mass multiplets A = 8, 9, 12, and 13. Most important are binding energy effects, which calculated with various Saxon-- Woods single-particle models. results very parameter-dependent; nevertheless, all models predict a larger asymmetry, delta , even-A than odd-A multiplets. This is contrary to experimental data. effects of charge- dependent Coulomb mixing considered by repeating Cohen- Kurath shell- model calculations proton-- neutron formalism. In most cases were small, but some significant contribution obtained, partially resolves discrepancy just noted. influence on second-forbidden matrix elements radiative corrections small. (1 figure. 3 tables) (auth)