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${\mathit m}_{{{\mathit \psi}{(2S)}}}–{\mathit m}_{{{\mathit J / \psi}{(1S)}}}$

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M071DM

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 589.188 \pm0.028}$ OUR AVERAGE $589.194$ $\pm0.027$ $\pm0.011$ 1 AULCHENKO 2003 KEDR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $589.7$ $\pm1.2$ LEMOIGNE 1982 GOLI 185 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{}^{}\mathrm {A}$ $589.07$ $\pm0.13$ 1 ZHOLENTZ 1980 OLYA ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $588.7$ $\pm0.8$ LUTH 1975 MRK1 • • We do not use the following data for averages, fits, limits, etc. • • $588$ $\pm1$ 2 BAI 1998 E BES ${{\mathit e}^{+}}{{\mathit e}^{-}}$ 1  Redundant with data in mass above. 2  Systematic errors not evaluated.

References