Decay-angular-distribution correlated CP violation in heavy hadron cascade decays

CP violation in baryon decay processes is still undiscovered to date. We present a general analysis of the decay-angular-distributions and the corresponding CP asymmetries in cascade decays of the type ℍ→ R(→ ab) c, where ℍ is a heavy hadron that decays through weak interactions ℍ→ R c, and the resonance R decays strongly via R→ ab. Based on the analysis, we propose to search for CP violation in the decay-angular-distributions in the cascade decay processes 𝔹→ℬ M, with ℬ or M subsequently decaying through strong interactions, where 𝔹 is the mother baryon, ℬ or M are the daughter baryon and meson, respectively, and M has to be spin-nonzero. We also present some typical decay channels in which the search for such kinds of CP asymmetries can be performed.