Beta Decay

img_lrg/carbon14decay.jpg not found

In this example of beta-minus decay, carbon-14 decays to nitrogen-14, an electron and an anti-neutrino. We can interpret this as a neutron changing into a proton and emitting the electron and anti-neutrino. While this is a decay, and not an interaction, it is mediated by the weak force—the only force that changes particle type. (Unit: 2)