pdgLive

${{\mathit h}_{{{b}}}{(1P)}}$ MASS

INSPIRE JSON (beta) PDGID:

VALUE (MeV)

EVTS

DOCUMENT ID

TECN

COMMENT

$\bf{ 9899.3 \pm0.8}$

OUR AVERAGE

$9899.3$ $\pm0.4$ $\pm1.0$

112k

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}$ + hadrons

$9899.1$ $\pm0.4$ $\pm1.0$

70k

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ hadrons

$9902$ $\pm4$ $\pm2$

10.8k

BABR

${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \eta}_{{{b}}}}{{\mathit \gamma}}{{\mathit \pi}^{0}}$

• • We do not use the following data for averages, fits, limits, etc. • •

$9898.2$ ${}^{+1.1}_{-1.0}$ ${}^{+1.0}_{-1.1}$

50.0k

BELL

10.86 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ MM

¹	Superseded by MIZUK 2012.

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