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arXiv · 2003.04065

Effective field theory for triaxially deformed odd-mass nuclei

Q. B. Chen·N. Kaiser·Ulf-G. Meißner·J. Meng
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Abstract

The effective field theory for collective rotations of triaxially deformed nuclei is generalized to odd-mass nuclei by including the angular momentum of the valence nucleon as an additional degree of freedom. The Hamiltonian is constructed up to next-to-leading order within the effective field theory formalism. The applicability of this Hamiltonian is examined by describing the wobbling bands observed in the lutetium isotopes $^{161,163,165,167}$Lu. It is found that by taking into account the next-to-leading order corrections, quartic in the rotor angular momentum, the wobbling energies $E_{\textrm{wob}}$ and spin-rotational frequency relations $\omega(I)$ are better described than with the leading order Hamiltonian.

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Q. B. Chen, N. Kaiser, Ulf-G. Meißner, J. Meng. 2020-03-09. Effective field theory for triaxially deformed odd-mass nuclei. https://arxiv.org/abs/2003.04065

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