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${\mathit m}_{{{\mathit \Upsilon}{(3S)}}}–{\mathit m}_{{{\mathit \Upsilon}{(2S)}}}$

INSPIRE   PDGID:

M052DM3

VALUE (MeV) DOCUMENT ID TECN  COMMENT $331.50$ $\pm0.02$ $\pm0.13$ LEES 2011 C BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit X}}$

References