Recently a new state of the $b\overline{b}$ system has been observed by the ATLAS Collaboration, with a mass of $10530\pm 5\pm 9\mathrm{MeV}$. This state has been identified with the $n=3$ $P$-wave radial excitations of the $b\overline{b}$ system with parallel quark spins, called ${\chi }_b(3P)$. The measured value of the mass corresponds to the average of the $J=0$, 1, and 2 states, while the splittings of these states are not yet resolved. In this work we present predictions from different potentials models for the values of these splittings.

• Received 9 August 2012

DOI:https://doi.org/10.1103/PhysRevD.86.094011