pdgLive Home   >   ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ MESONS (including possibly non-${\mathit {\mathit q}}{\mathit {\overline{\mathit q}}}$ states)   >   ${{\mathit \chi}_{{{b2}}}{(1P)}}$   >   ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(1P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(1P)}}}$

${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(1P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(1P)}}}$

INSPIRE   PDGID:

M078DM2

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 19.10 \pm0.25}$ OUR AVERAGE  Error includes scale factor of 1.1. $19.81$ $\pm0.65$ $\pm0.20$ 1 AAIJ 2014 BG LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $19.01$ $\pm0.24$ LEES 2014 M BABR ${{\mathit \Upsilon}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ 1  From the ${{\mathit \chi}_{{{bj}}}{(1P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(1S)}}{{\mathit \gamma}}$ transition.

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