Microscopic look at the nuclear twist

For ${}_{}{}^{90}{}_{}{}^{}\mathrm{Zr}$ and ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ a microscopic one-particle-one-hole plus two-particle-two-hole calculation examines fluid dynamical predictions about a collective twist resonance in finite nuclei at $E\sim 45A^{-\frac{1}{3}}$ MeV. A spin flip mode which strongly competes with the twist in experiments is heavily fragmented, thus allowing experimental detection of the twist.