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Published on: August 18, 2017
Mirror energy differences at large isospin studied through direct two-nucleon knockout
P J Davies1, M A Bentley, T W Henry
1Department of Physics, University of York, Heslington, York, United Kingdom. paul.davies@york.ac.uk
Abstract:
The first spectroscopy of excited states in 52Ni (T(z)=-2) and 51Co (T(z)=-3/2) has been obtained using the highly selective two-neutron knockout reaction. Mirror energy differences between isobaric analogue states in these nuclei and their mirror partners are interpreted in terms of isospin nonconserving effects. A comparison between large-scale shell-model calculations and data provides the most compelling evidence to date that both electromagnetic and an additional isospin nonconserving interactions for J=2 couplings, of unknown origin, are required to obtain good agreement.
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