Experimental Guidance Of Isb Corrections Via Direct Nuclear Reactions

The most recent isospin-symmetry-breaking corrections, delta(C), of Towner and Hardy for superallowed Fermi beta-decay transitions, have included the opening of specific core orbitals. This change has resulted insignificant deviations in some of the delta(C) factors from their previous calculations, and an improved agreement of the individual corrected Ft values with the overall world average of the 13 most precise cases. While this is consistent with the conserved-vector-current (CVC) hypothesis of the Standard Model, these new calculations must be thoroughly tested, and guidance must be given for the improvement of calculations for the upper-pf shell nuclei. Using the (d,t) reaction mechanism to probe the single neutron wave function overlap, information regarding the relevant shell-model configurations needed in the calculation can be determined. An experiment was therefore performed with a 22 MeV polarized deuterium beam from the MP tandem Van de Graaff accelerator in Munich, Germany. Using the Q3D magnetic spectrograph, and a cathode-strip focal-plane detector, outgoing tritons were analyzed at 9 angles between 10 degrees and 60 degrees,up to an excitation energy of 4.8 MeV. This proceeding reports the motivational and experimental details for the Zn-64((d) over right arrow ,t)Zn-63 transfer work presented