# ${\boldsymbol m}_{{{\boldsymbol \chi}_{{b2}}{(2P)}}}–{\boldsymbol m}_{{{\boldsymbol \chi}_{{b1}}{(2P)}}}$ INSPIRE search

VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 13.10 \pm0.24}$ OUR AVERAGE
$12.3$ $\pm2.6$ $\pm0.6$ 1
 2014 BG
LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{{\mathit X}}$
$13.04$ $\pm0.26$
 2014 M
BABR ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$13.5$ $\pm0.4$ $\pm0.5$ 2
 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 .
References:
 AAIJ 2014BG
JHEP 1410 088 Measurement of the ${{\mathit \chi}_{{b}}{(3P)}}$ Mass and of the Relative Rate of ${{\mathit \chi}_{{b1}}{(1P)}}$ and ${{\mathit \chi}_{{b2}}{(1P)}}$ Production
 LEES 2014M
PR D90 112010 Bottomonium Spectroscopy and Radiative Transitions Involving the ${{\mathit \chi}_{{bJ}}{(1P,2P)}}$ States at BABAR
 HEINTZ 1992
PR D46 1928 ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ Spectroscopy from the ${{\mathit \Upsilon}{(3S)}}$ State