Measurements and computational analysis on the natural decay of ${}^{176}$Lu

Mainly because of its long half-life and despite its scientific relevance, spectroscopic measurements of ${}^{176}$Lu forbidden $\beta$-decays are very limited and lack formulation of shape factors. A direct precise measurement of its $Q$ value is also presently unreported. In addition, the description of forbidden decays provides interesting challenges for nuclear theory. The comparison of precise experimental results with theoretical calculations for these decays can help to test underlying models and can aid the interpretation of data from other experiments.