Identification of a potential ultra-low Q value electron capture decay branch in ${}^{75}$Se via a precise Penning trap measurement of the mass of ${}^{75}$As

M. Horana Gamage, R. Bhandari, G. Bollen +8

Background: Low energy $\beta$ and electron capture (EC) decays are important systems in neutrino mass determination experiments. An isotope with an ultra-low Q value $\beta$-decay to an e…