PhysicalCPPhase and MaximalCPNonconservation

Abstract
We give some applications for a CP-nonconserving quantity which is invariant under nontrivial rephasings of the Kobayashi-Maskawa mixing matrix. It is shown to resolve one of the two ambiguities involved in defining the concept of maximal CP nonconservation. The second, more intrinsic, ambiguity is partially resolved in the framework of an especially symmetrical class of parametrizations.