Probing the mass degeneracy of particles with different spins

Abstract

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 $B^{+}\to X(3872)K^{+}$, $X(3872)\to D^{+}{D}^{-}$ 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.

References in corpus (6)

• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Determination of the X(3872) meson quantum numbers
• Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle
• Bounds on the width, mass difference and other properties of X(3872) --> pi+pi-J/psi decays
• CP violation in $B^{\pm }\to {\pi }^{\pm }{\pi }^{+}{\pi }^{-}$ in the region with low invariant mass of one ${\pi }^{+}{\pi }^{-}$ pair