The T=0 neutron-proton pairing correlations in the superdeformed rotational bands around ⁶⁰Zn

J. Dobaczewski,^1,2 J. Dudek,² and R. Wyss³

¹Institute of Theoretical Physics, Warsaw University, Hoza 69, PL-00681, Warsaw, Poland
²Institut de Recherches Subatomiques, UMR7500, CNRS-IN2P3 and Université Louis Pasteur,
F-67037 Strasbourg Cedex 2, France
³KTH-Kärnfysik, Frescativ. 24, S-104 05 Stockholm, Sweden

Abstract:

The superdeformed bands in ⁵⁸Cu, ⁵⁹Cu, ⁶⁰Zn, and ⁶¹Zn are analyzed within the frameworks of the Skyrme-Hartree-Fock as well as Strutinsky-Woods-Saxon total routhian surface methods with and without the T=1 pairing correlations. It is shown that a consistent description within these standard approaches cannot be achieved. A T=0 neutron-proton pairing configuration mixing of signature-separated bands in ⁶⁰Zn is suggested as a possible solution to the problem.