Simple rules for evanescent operators in one-loop basis transformations
Simple rules for evanescent operators in one-loop basis transformations
Basis transformations often involve Fierz and other relations that are only valid in $D=4$ dimensions. In general $D$ spacetime dimensions, however, evanescent operators have to be introduced in order to preserve such identities. Such evanescent operators contribute to one-loop basis transformations as well as to two-loop renormalization group running. We …