A microscopic study of the proton-neutron symmetry and phonon structure of the low-lying states in 92Zr

Details A microscopic study of the proton-neutron symmetry and phonon structure of the low-lying states in 92Zr A microscopic study of the proton-neutron symmetry and phonon structure of the low-lying states in 92Zr

2004-03-19

arxiv.org/abs/nucl-th/0403058v1

Phys.Rev. C69 (2004) 044312

Physics

Nuclear Physics

Nuclear Theory

13 pages, to appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.69.044312

We studied in a microscopic multiphonon approach the proton-neutron symmetry and phonon structure of some low-lying states recently discovered in 92Zr. We confirm the breaking of F-spin symmetry, but argue that the breaking mechanism is more complex than the one suggested in the original shell model analysis of the data. We found other new intriguing features of the spectrum, like a pronounced multiphonon fragmentation of the states and a tentative evidence of a three-phonon mixed symmetry state.

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