title: Experimental validation of the largest calculated isospin-symmetry-breaking effect in a superallowed Fermi decay.
abstract: A precision measurement of the γ yields following the β decay of (32)Cl has determined its isobaric-analogue branch to be (22.47(-0.18)(+0.21))%. Since it is an almost pure-Fermi decay, we can also determine the amount of isospin-symmetry breaking in this superallowed transition. We find a very large value, δ(C) = 5.3(9)%, in agreement with a shell-model calculation. This result sets a benchmark for isospin-symmetry-breaking calculations and lends support for similarly calculated, yet smaller, corrections that are currently applied to 0+ → 0 + transitions for tests of the standard model.
authors: Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA. dmelconian@physics.tamu.edu
authors: D
authors: D
authors: Melconian
authors: S
authors: S
authors: Triambak
authors: C
authors: C
authors: Bordeanu
authors: A
authors: A
authors: García
authors: J C
authors: JC
authors: Hardy
authors: V E
authors: VE
authors: Iacob
authors: N
authors: N
authors: Nica
authors: H I
authors: HI
authors: Park
authors: G
authors: G
authors: Tabacaru
authors: L
authors: L
authors: Trache
authors: I S
authors: IS
authors: Towner
authors: R E
authors: RE
authors: Tribble
authors: Y
authors: Y
authors: Zhai
mesh_terms: D002713:Chlorine / Q000737:chemistry*; D007554:Isotopes; D008956:Models, Chemical; D011851:Radioactivity; D015203:Reproducibility of Results
chemical_list: D007554:Isotopes; D002713:Chlorine