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${\mathit m}_{{{\mathit \chi}_{{{b1}}}{(2P)}}}–{\mathit m}_{{{\mathit \chi}_{{{b0}}}{(2P)}}}$

INSPIRE   PDGID:

M079M2

VALUE (MeV) DOCUMENT ID TECN  COMMENT $23.8$ $\pm1.7$ LEES 2014 M BABR ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

References:

LEES 2014M PR D90 112010 Bottomonium Spectroscopy and Radiative Transitions Involving the ${{\mathit \chi}_{{{bJ}}}{(1P,2P)}}$ States at BABAR