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

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M081M2

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 13.2 \pm0.4}$ OUR AVERAGE  Error includes scale factor of 1.8.  See the ideogram below. $15.7$ $\pm1.0$ 50 1 AAIJ 2024 AC LHCB ${{\mathit \chi}_{{{b}}}{(2P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(1S)}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $12.3$ $\pm2.6$ $\pm0.6$ 2 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 ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $13.5$ $\pm0.4$ $\pm0.5$ 3 HEINTZ 1992 CSB2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}$ X, ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}{{\mathit \gamma}}{{\mathit \gamma}}$ 1  Observed in prompt ${{\mathit p}}{{\mathit p}}$ production. 2  From the ${{\mathit \chi}_{{{bj}}}{(2P)}}$ $\rightarrow$ ${{\mathit \Upsilon}{(1S)}}{{\mathit \gamma}}$ transition. 3  From the average photon energy for inclusive and exclusive events. Supersedes NARAIN 1991.

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

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