Forbidden beta decay properties of ¹³⁵,¹³⁷Te using shell-model

In this work, the large-scale shell-model calculations for & beta;-decay properties have been done. The & beta;- delayed & gamma;-ray spectroscopy has been performed recently at ILL, Grenoble [M. Si et al., Phys. Rev. C 106, 014302 (2022)] to study & beta;-decay properties corresponding to 137Te ((7/2-)) & RARR; 137I (Jf) transitions. We have done systematic shell-model study for nuclear structure properties and compared the obtained results with the experimental data. Finally, the & beta;-decay properties such as the log f t values and average shape factors have been reported. This is the first theoretical calculation for the log f t values corresponding to these new experimental data. In addition, we have also reported calculated log f t results for 135Te ((7/2-)) & RARR; 135I (Jf) transitions.& COPY; 2022 Elsevier B.V. All rights reserved.