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arXiv · 1109.3869

Microscopic calculations of isospin mixing in N~Z nuclei and isospin-symmetry-breaking corrections to the superallowed beta-decay

M. Rafalski·W. Satula
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Abstract

Recently, we have applied for the first time the angular momentum and isospin projected nuclear density functional theory to calculate the isospin-symmetry breaking (ISB) corrections to the superallowed beta-decay. With the calculated set of the ISB corrections we found |V_{ud}|=0.97447(23) for the leading element of the Cabibbo-Kobayashi-Maskawa matrix. This is in nice agreement with both the recent result of Towner and Hardy [Phys. Rev. {\bf C77}, 025501 (2008)] and the central value deduced from the neutron decay. In this work we extend our calculations of the ISB corrections covering all superallowed transitions A,I^π=0^+,T=1,T_z \rightarrow A,I^π=0^+,T=1,T_z+1 with T_z =-1,0 and A ranging from 10 to 74.

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M. Rafalski, W. Satula. 2011-11-28. Microscopic calculations of isospin mixing in N~Z nuclei and isospin-symmetry-breaking corrections to the superallowed beta-decay. https://doi.org/10.1088/0031-8949%2F2012%2Ft150%2F014032

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