Theoretical corrections and world data for the superallowed f t values in the beta decays of Ti-42, Cr-46, Fe-50, and Ni-54 Academic Article uri icon


  • 2015 American Physical Society. Prompted by recent measurements, we surveyed world data and calculated radiative and isospin-symmetry-breaking corrections for the superallowed 0+0+ Fermi transitions from Ti42,Cr46,Fe50, and Ni54. This increases the number of such transition with a complete set of calculated corrections from 20 to 23. The results are compared with their equivalents for the mirror superallowed transitions from Sc42,V46,Mn50, and Co54. The predicted ft-value asymmetries of these mirror pairs are sensitive to the correction terms and provide motivation for improving measurement precision so as to be able to test the corrections. To aid in that endeavor, we present a parametrization for calculating the f values for the new transitions to 0.01%.

published proceedings


altmetric score

  • 0.75

author list (cited authors)

  • Towner, I. S., & Hardy, J. C.

citation count

  • 9

publication date

  • November 2015