Radial overlap correction to superallowed 0+→0+ β decay reexamined
نویسندگان
چکیده
منابع مشابه
Superallowed Fermi beta decay: the radiative correction
Precision studies of superallowed beta decay are used to determine the Cabibbo-KobayashiMaskawa (CKM) matrix element Vud and to study the matrix’s unitarity. To reach this goal, however, the experimental β-decay rates need to be corrected for radiative and isospin-symmetry-breaking effects. The radiative correction, which in total is around 4%, is conveniently divided into terms that are nucleu...
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Superallowed 0 → 0 beta decay between T=1 analogue states has been a subject of continuous and often intense study for five decades. The ft values of such transitions are nearly independent of nuclear-structure ambiguities and depend uniquely on the vector part of the weak interaction. Their measurement gives us access to clean tests of some of the fundamental precepts of weak-interaction theor...
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Superallowed 0 → 0 nuclear beta decay provides a direct measure of the weak vector coupling constant, GV. We survey current world data on the nine accurately determined transitions of this type, which range from the decay of C to that of Co, and demonstrate that the results confirm conservation of the weak vector current (CVC) but differ at the 98% confidence level from the unitarity condition ...
متن کاملComparative tests of isospin - symmetry - breaking corrections to superallowed 0 + → 0 + nuclear β decay
We present a test with which to evaluate the calculated isospin-symmetry-breaking corrections to superallowed 0+ → 0+ nuclear β decay. The test is based on the corrected experimental F t values being required to satisfy conservation of the vector current (CVC). When applied to six sets of published calculations, the test demonstrates quantitatively that only one set, the one based on the shell ...
متن کاملImproved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi β decay
We report new shell-model calculations of the isospin-symmetry-breaking correction δC to superallowed 0+ → 0+ nuclear β decay. The most important improvement is the inclusion of core orbitals, which are demonstrated to have a significant impact on the mismatch in the radial wave functions of the parent and daughter states. We determine which core orbitals are important to include from an examin...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2018
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.97.024324