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${{\mathit \eta}_{{b}}{(2S)}}$
${\boldsymbol {\boldsymbol b}}$ ${\boldsymbol {\overline{\boldsymbol b}}}$ 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.
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${{\mathit \eta}_{{b}}{(2S)}}$ MASS
$9999 \pm4$ MeV
${\mathit m}_{{{\mathit \Upsilon}{(2S)}}}{\mathit m}_{{{\mathit \eta}_{{b}}{(2S)}}}$
$24 \pm4$ MeV
${{\mathit \eta}_{{b}}{(2S)}}$ WIDTH
$<24$ MeV CL=90.0%
Decay Modes
Mode
Fraction ($\Gamma_i$ / $\Gamma$)
Scale Factor/
Conf. Level
P (MeV/c)
$\Gamma_{1}$
hadrons
seen