Author(s): W. Z. Xu (许文政) et al. A doublet-band structure consisting of two $\mathrm{Δ}I=1$ bands connected by multiple interband transitions was identified in $^{112}\mathrm{Sb}$, with an average energy difference of only 36 keV between the two bands. It represents the most degenerate doublet-band structure observed so far in nucl… [Phys. Rev. Lett. 137, 162503] Published Fri Oct 16, 2026