Mirror Energy Differences at Large Isospin Studied through Direct Two-Nucleon Knockout

2013
The first spectroscopy of excited states in 52Ni (Tz=-2) and 51Co (Tz=-3/2) has been obtained using the highly selective two-neutron knockout reaction. Mirror energy differences between isobaricanalogue states in these nuclei and their mirror partners are interpreted in terms of isospinnonconserving effects. A comparison between large-scale shell-modelcalculations and data provides the most compelling evidence to date that both electromagnetic and an additional isospinnonconserving interactions for J=2 couplings, of unknown origin, are required to obtain good agreement.
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