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

Abstract

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→Rc 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→BM, with B or M subsequently decaying through strong interactions, where B is the mother baryon, B and 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. Published by the American Physical Society 2024