We propose a new mechanism which can introduce large CP asymmetries in the phase spaces of three-body decays of heavy baryons. In this mechanism, a large CP asymmetry is induced by the interference of two intermediate resonances, which subsequently decay into two different combinations of final particles. We apply this mechanism to the decay channel Λb0→pπ0π−, and find that the differential CP asymmetry can reach as large as 50%, while the regional CP asymmetry can reach as large as 16% in the interference region of the phase space.
@article{arxiv.1507.04459,
title = {Possible large $CP$ violation in three body decays of heavy baryon},
author = {Zhen-Hua Zhang and Chao Wang and Xin-Heng Guo},
journal= {arXiv preprint arXiv:1507.04459},
year = {2015}
}
Comments
7 pages, 2 figures, 2nd version accepted by Phys. Lett. B