Higher mass bottomonia

We show the results of a coupled-channel quark model calculation of the bottomonium spectrum with self-energy corrections due to the coupling to the meson-meson continuum. We also provide results for the open-bottom strong decay amplitudes of higher bottomonia in a ${{}^{3}P}_0$ model.

Figure 1

Two diagrams can contribute to the process $A\to BC$. $q_i$ and ${\overline{q}}_i$ stand for the various initial ($i=1–4$) and final $(i=5–8$) quarks or antiquarks, respectively. Picture from Ref. [73]. Copyright 2012, American Physical Society.

Figure 2

Comparison between the calculated masses (black lines) of $1S$, $2S$, $3S$, $1P$, $2P$, $3P$, and $1D$ bottomonium states via Eq. (3) and the experimental ones [79, 80] (boxes). The new values of Godfrey and Isgur’s model parameters are taken from Table 6. Also shown is the lowest strong decay thresholds.

Figure 3

Mass barycenter (in GeV) of the ${\chi }_b(3P)$ system in our UQM calculation.