Could large CP-violation be detected at colliders?

Abstract

We argue that CP-violation effects below a few × 10−3 are probably undetectable at hadron and electron colliders. Thus only operators whose contributions interfere with tree-level Standard Model amplitudes are detectable. We list these operators for Standard Model external particles and some two- and three-body final state reactions that could show detectable effects. These could test electroweak baryogenesis scenarios.