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

INSPIRE search

${{\boldsymbol \eta}_{{b}}{(2S)}}$ $I^G(J^{PC})$ = $0^+(0^{- +})$

Quantum numbers shown are quark-model predictions.

${{\mathit \eta}_{{b}}{(2S)}}$ MASS

$9999 \pm4$ MeV

${\mathit m}_{{{\mathit \Upsilon}{(2S)}}}–{\mathit m}_{{{\mathit \eta}_{{b}}{(2S)}}}$

$24 \pm4$ MeV

${{\mathit \eta}_{{b}}{(2S)}}$ WIDTH

Decay Modes