Wimmer, K, Korten, W, Doornenbal, P et al. (35 more authors) (2021) Shape changes in the mirror nuclei $^{70}$Kr and $^{70}$Se. Physical Review Letters. 072501. ISSN 1079-7114
Abstract
We studied the proton-rich T_{z}=-1 nucleus ^{70}Kr through inelastic scattering at intermediate energies in order to extract the reduced transition probability, B(E2;0^{+}→2^{+}). Comparison with the other members of the A=70 isospin triplet, ^{70}Br and ^{70}Se, studied in the same experiment, shows a 3σ deviation from the expected linearity of the electromagnetic matrix elements as a function of T_{z}. At present, no established nuclear structure theory can describe this observed deviation quantitatively. This is the first violation of isospin symmetry at this level observed in the transition matrix elements. A heuristic approach may explain the anomaly by a shape change between the mirror nuclei ^{70}Kr and ^{70}Se contrary to the model predictions.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | accepted PRL | ||||||||||
Keywords: | nucl-ex, nucl-th | ||||||||||
Dates: |
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Institution: | The University of York | ||||||||||
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) | ||||||||||
Funding Information: |
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Depositing User: | Pure (York) | ||||||||||
Date Deposited: | 14 Jan 2021 15:30 | ||||||||||
Last Modified: | 06 Dec 2023 14:03 | ||||||||||
Published Version: | https://doi.org/10.1103/PhysRevLett.126.072501 | ||||||||||
Status: | Published | ||||||||||
Refereed: | Yes | ||||||||||
Identification Number: | https://doi.org/10.1103/PhysRevLett.126.072501 |