Question: Draw the lowest-order Feynman diagrams for the e+e- --> W+W-process The answer gives three diagrams. I understand the first two, but the third makes no sense to me. Here it is: So this is a t-channel Feynman diagram. As far as I can tell regarding how these types of Feynman diagrams are read, the following processes are taking place: e- --> ve + W- e+ + ve- --> W+ But this makes no sense to me. How can an electron decay into a neutrino and a W boson? And how can a positron and a neutrino combine to form a W boson? Am I simply reading this wrongly?