In this contribution, we discuss our recent unquenched quark model results
for the spectrum of bbˉ 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 χb​(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
χb​(3P) states is discussed. Finally, we show our quark model results for
the radiative decays of the χb​(3P) system and the open-bottom decays of
bbˉ mesons.Comment: Talk given at the conference "Dark Matter, Hadron Physics and Fusion
Physics", Messina (Italy), September 24-26, 201
