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EXPERIMENTAL GUIDANCE FOR ISOSPIN SYMMETRY BREAKING CALCULATIONS VIA SINGLE NEUTRON PICKUP REACTIONS

    https://doi.org/10.1142/9789814383646_0021Cited by:0 (Source: Crossref)
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    Abstract:

    Recent activity in superallowed isospin-symmetry-breaking correction calculations has prompted interest in experimental confirmation of these calculation techniques. The shellmodel set of Towner and Hardy (2008) include the opening of specific core orbitals that were previously frozen. This has resulted in significant shifts in some of the δC values, and an improved agreement of the individual corrected values with the adopted world average of the 13 cases currently included in the high-precision evaluation of Vud. While the nucleus-to-nucleus variation of 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 their improvement. Presented here are details of a experiment, undertaken to provide such guidance.