The spin is an important property of a particle. Although it is unlikely to happen, there is still a possibility that two particle with different spins share similar masses. In this paper, we propose a method to probe this kind of mass degeneracy of particles with different spins. We will use the cascade decay B+→X(3872)K+, X(3872)→D+D− to explain our method. It can be seen that the possible mass degeneracy of X(3872) can lead interesting behavior in the corresponding cascade decay.
@article{arxiv.1405.7213,
title = {Probing the mass degeneracy of particles with different spins},
author = {Z. -H. Zhang and G. Lü and K. -W. Wei},
journal= {arXiv preprint arXiv:1405.7213},
year = {2015}
}