${{\mathit X}{(3940)}}$ MASS

INSPIRE   PDGID:
M029M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$3942$ ${}^{+7}_{-6}$ $\pm6$ 52
PAKHLOV
2008
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit X}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$3943$ $\pm6$ $\pm6$ 25 1
ABE
2007
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit X}}$
$3936$ $\pm14$ 266 2
ABE
2007
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$( ${{\mathit c}}{{\overline{\mathit c}}}$)
1  From a fit to ${{\mathit D}^{*+}}{{\mathit D}^{-}}$ and ${{\mathit D}^{*0}}{{\overline{\mathit D}}^{0}}$ events.
2  From the inclusive fit. Not independent of the exclusive measurement by ABE 2007.
References