Spectroscopy of higher bottomonia

Abstract

In this contribution, we discuss our recent unquenched quark model results for the spectrum of $b\bar{b}$ mesons with self energy corrections, due to the coupling to the meson-meson continuum. Our unquenched quark model predictions for the masses of the recently discovered ${\chi }_b(3P)$ states are compared to those of a re-fit of Godfrey and Isgur's relativized quark model to the most recent experimental data. The possible importance of continuum effects in the ${\chi }_b(3P)$ states is discussed. Finally, we show our quark model results for the radiative decays of the ${\chi }_b(3P)$ system and the open-bottom decays of $b\bar{b}$ mesons.

Comments: Talk given at the conference "Dark Matter, Hadron Physics and Fusion Physics", Messina (Italy), September 24-26, 2014