pdgLive Home   >   Meson Summary Table   >   ${{\mathit \psi}{(2S)}}$   >   ${\mathit m}_{{{\mathit \psi}{(2S)}}}–{\mathit m}_{{{\mathit J / \psi}{(1S)}}}$

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

INSPIRE   PDGID:

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:

AULCHENKO 2003 PL B573 63 New Precision Measurement of the ${{\mathit J / \psi}}$ and ${{\mathit \psi}^{\,'}}$ Meson Masses BAI 1998E PR D57 3854 Search for ${{\mathit \psi}{(2S)}}$ Production in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilations at 4.03 GeV LEMOIGNE 1982 PL 113B 509 Measurement of Hadronic Production of the ${{\mathit \chi}_{{1}}{(3507)}^{++}}$ and ${{\mathit \chi}_{{2}}{(3553)}^{++}}$ through Their Radiative Decay to ${{\mathit J / \psi}}$ ZHOLENTZ 1980 PL 96B 214 High Precision Measurement of the ${{\mathit \psi}}$ and ${{\mathit \psi}^{\,'}}$ Meson Masses Also SJNP 34 814 Absolute Energy Calibration for the Storage Ring VEPP-4 and a Precision Measurement of ${{\mathit \psi}}$ and ${{\mathit \psi}^{\,'}}$ Meson Masses LUTH 1975 PRL 35 1124 The Quantum Numbers and Decay Widths of the ${{\mathit \psi}^{\,'}{(3684)}}$