Transverse wobbling in an even-even nucleus

Abstract

Two new bands built on the two-quasiparticle $\pi (h_{11/2}{)}^2$ configuration of the even-even nucleus ${}^{130}$Ba are investigated using constrained triaxial covariant density functional theory combined with quantum particle rotor model calculations. The energy difference between the two bands, as well as the available electromagnetic transition probabilities $B(M1{)}_{\text{out}}/B(E2{)}_{\text{in}}$ and $B(E2{)}_{\text{out}}/B(E2{)}_{\mathrm{in}}$, are well reproduced. The analysis of the angular momentum geometry reveals that the higher band represents transverse wobbling motion of a two-quasiparticle configuration. This is the first example of two-quasiparticle wobbling bands in an even-even nucleus.

arXiv comment5 pages, 4 figures

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Cited by in corpus (9)

• First Observation of Multiple Transverse Wobbling Bands of Different Kinds in ${}^{183}$Au
• Two quasiparticle wobbling in the even-even nucleus 130Ba
• Evidence against the wobbling nature of low-spin bands in ${}^{135}$Pr
• Questioning the wobbling interpretation of low-spin bands in $\gamma$-soft nuclei within the interacting boson-fermion model
• $g$-factor and static quadrupole moment of ${}^{135}$Pr, ${}^{105}$Pd, and ${}^{187}$Au in wobbling motion
• Influence of moments of inertia on transverse wobbling mode in odd-mass nuclei
• Influence of triaxial deformation on wobbling motion in even-even nuclei
• Search for the origin of wobbling motion in the $A\approx 130$ region: The case of ${}^{131}$Xe
• Parity Partner Bands in ${}^{163}$Lu: A novel approach for describing the negative parity states from a triaxial super-deformed band