Probing the mass degeneracy of particles with different spinsSupported by National Natural Science Foundation of China (11347124, 11147003, U1204115), Doctoral Scientific Research Foundation of USC, and Innovation Team of Nuclear and Particle Physics of USC
Zhen-Hua Zhang (School of Nuclear Science and Technology, University of South China, Hengyang 421001, China, Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China); Gang Lü (College of Science, Henan University of Technology, Zhengzhou 450001, China); Ke-Wei Wei (College of Physics and Electrical Engineering, Anyang Normal University, Anyang 455002, China)
The spin is an important property of a particle. Although it is unlikely, there is still a possibility that two particles 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 use the cascade decay B+→X(3872)K+, X(3872)→D+D− to illustrate our method. It can be seen that the possible mass degeneracy of X(3872) can lead to interesting behavior in the corresponding cascade decay.