# ${\boldsymbol {\boldsymbol b}}$ ${\boldsymbol {\overline{\boldsymbol b}}}$ MESONS (including possibly non- ${\boldsymbol {\boldsymbol q}}$ ${\boldsymbol {\overline{\boldsymbol q}}}$ states)

 See related reviews: Width Determination of the ${{\mathit \Upsilon}}$ States Spectroscopy of Mesons Containing Two Heavy Quarks Bottomonium System
 • ${{\mathit \eta}_{{b}}{(1S)}}$ $0^+(0^{- +})$
 • ${{\mathit \Upsilon}{(1S)}}$ $0^-(1^{- -})$
 • ${{\mathit \chi}_{{b0}}{(1P)}}$ $0^+(0^{+ +})$
 • ${{\mathit \chi}_{{b1}}{(1P)}}$ $0^+(1^{+ +})$
 • ${{\mathit h}_{{b}}{(1P)}}$ $?^?(1^{+ -})$
 • ${{\mathit \chi}_{{b2}}{(1P)}}$ $0^+(2^{+ +})$
 ${{\mathit \eta}_{{b}}{(2S)}}$ $0^+(0^{- +})$
 • ${{\mathit \Upsilon}{(2S)}}$ $0^-(1^{- -})$
 • ${{\mathit \Upsilon}_{{2}}{(1D)}}$ was ${{\mathit \Upsilon}{(1D)}}$ $0^-(2^{- -})$
 • ${{\mathit \chi}_{{b0}}{(2P)}}$ $0^+(0^{+ +})$
 • ${{\mathit \chi}_{{b1}}{(2P)}}$ $0^+(1^{+ +})$
 ${{\mathit h}_{{b}}{(2P)}}$ $?^?(1^{+ -})$
 • ${{\mathit \chi}_{{b2}}{(2P)}}$ $0^+(2^{+ +})$
 • ${{\mathit \Upsilon}{(3S)}}$ $0^-(1^{- -})$
 • ${{\mathit \chi}_{{b1}}{(3P)}}$ $0^+(1^{+ +})$
 • ${{\mathit \Upsilon}{(4S)}}$ aka ${{\mathit \Upsilon}{(10580)}}$ $0^-(1^{- -})$
 • ${{\mathit Z}_{{b}}{(10610)}}$ was ${{\mathit X}{(10610)}}$ $1^+(1^{+ -})$
 ${{\mathit Z}_{{b}}{(10650)}}$ was ${{\mathit X}{(10650)}^{\pm}}$ $1^+(1^{+ -})$
 • ${{\mathit \Upsilon}{(10860)}}$ $0^-(1^{- -})$
 • ${{\mathit \Upsilon}{(11020)}}$ $0^-(1^{- -})$
 • Indicates established particles.