pdgLive Home   >   ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ MESONS (including possibly non-${\mathit {\mathit q}}{\mathit {\overline{\mathit q}}}$ states)   >   ${{\mathit \chi}_{{{b2}}}{(2P)}}$   >   ${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(2P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(2P)}}}$

${\mathit m}_{{{\mathit \chi}_{{{b2}}}{(2P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b1}}}{(2P)}}}$

INSPIRE   PDGID:

M081M2

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 13.10 \pm0.24}$ OUR AVERAGE $12.3$ $\pm2.6$ $\pm0.6$ 1 AAIJ 2014 BG LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$ $13.04$ $\pm0.26$ LEES 2014 M BABR ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $13.5$ $\pm0.4$ $\pm0.5$ 2 HEINTZ 1992 CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$ 1  From the ${{\mathit \chi}_{{{bj}}}{(2P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(1S)}}{{\mathit \gamma}}$ transition. 2  From the average photon energy for inclusive and exclusive events. Supersedes NARAIN 1991.

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