Phys.Rev. C 102, 045501 (2020)

J.C.Hardy, I.S.Towner

Superallowed O⁺ → O⁺ nuclear β decays: 2020 critical survey, with implications for V_ud and CKM unitarity

RADIOACTIVITY ¹⁰C, ¹⁴O, ¹⁸Ne, ²²Mg, ²⁶Si, ³⁰S, ³⁴Ar, ³⁸Ca, ⁴²Ti, ⁴⁶Cr, ⁵⁰Fe, ⁵⁴Ni, ^26mAl, ³⁴Cl, ^38mK, ⁴²Sc, ⁴⁶V, ⁵⁰Mn, ⁵⁴Co, ⁶²Ga, ⁶⁶As, ⁷⁰Br, ⁷⁴Rb(β⁺), (EC); compiled and evaluated Q(ϵ), T_1/2, β decay branching ratios, γ-intensity ratios for superallowed (0+ to 0+) β decays in T_z=-1 and 0 parent nuclei; deduced partial half-lives, ft and Ft for superallowed Fermi decays, Cabibbo-Kobayashi-Maskawa matrix V_ud, upper limit on Fierz interference. Discussed CKM unitarity test.

doi: 10.1103/PhysRevC.102.045501