Nuclear matrix elements for the first-forbidden β-decay of 198Au

Abstract

Nuclear matrix elements for the first-forbidden β-decay of 198Au have been extracted from experimental data. The following results have been obtained: ∫ γ 5 = 0.007 ± 0.016, ∫iσ · r ρ = −0.010 ± 0.058 , ∫ α = 0.012 ± 0.005 , ∫ i r ρ = 0.028 ± 0.020 , ∫σ × r ρ = 0.010 ± 0.011 , ∫ iB ij ρ = 0.029 ± 0.010 , ∫ i r ρ ( r ρ ) 2|∫ i r ρ = 0.95 ± 0.95 .