Impact of tensor force on \beta-decay of magic and semi-magic nuclei

TL;DR

This study examines how the tensor force influences eta-decay in magic and semi-magic nuclei using the proton-neutron RPA with Skyrme force, revealing significant effects on decay properties and better alignment with experimental data.

Contribution

It demonstrates the significant impact of the tensor force on eta-decay properties in magic and semi-magic nuclei within the RPA framework.

Findings

Tensor correlation strongly affects low-lying Gamow-Teller states.

Inclusion of tensor force improves eta-decay half-life predictions.

Q and ft values show better agreement with experimental data when tensor force is considered.

Abstract

Effect of the tensor force on $\beta$?-decay is studied in the framework of the proton-neutron random-phase-approximation (RPA) with the Skyrme force. The investigation is performed for even-even semi-magic and magic nuclei, $^{34}$Si, $^{68}$, $^{78}$Ni and $^{132}$Sn. The tensor correlation induces strong impact on low-lying Gamow-Teller state. In particular, it improves the ?$\beta$-decay half-lives. $Q$ and $ft$ values are also investigated and compared with experimental data.