Identification of a New Band and Its Signature Inversion in ¹⁷⁴Re

High spin states in 174Re are investigated via the ¹⁵²Sm(²⁷Al,5nγ)¹⁷⁴Re reaction and γ-γ coincidence relationships are analysed carefully. A new band is identified due to its spectroscopic connection with the known π1/2^-541_⊕^ν1/2^-521 band. This band is proposed to be the ground-state band built on the π 1/2^- 541⊕ν5/2^- 512 configuration in view of the low-lying intrinsic states in the neighbouring odd-mass nuclei. It is of particular interesting
that the new band exhibits a phenomenon of low-spin signature inversion,
providing a new situation for theoretical investigations.