Encompassing electron capture and positron emission, for 10 points, name this process in which a nucleus emits an electron and an antineutrino, which is distinct from alpha or gamma decay.
Energy emission during this process partly occurs due to "Inner Brehmsstralung", and its spectrum is directly proportional to an F of Z comma E term, which is normalized for when visualizing it on a Kurie plot. Isobaric compounds can interconvert via this process, while one version of this phenomenon has a rate proportional to the square of a polynomial of MNS matrix elements, and can be neutrinoless if the neutrino is a Majorana particle. Its Feynman diagram shows that it results from transformation of down quark to an up quark by expelling a W-minus boson, mediated by the weak force. Encompassing electron capture and positron emission, for 10 points, name this process in which a nucleus emits an electron and an antineutrino, which is distinct from alpha or gamma decay.
Energy emission during this process partly occurs due to "Inner Brehmsstralung", and its spectrum is directly proportional to an F of Z comma E term, which is normalized for when visualizing it on a Kurie plot.
{Beta} decay