${{\boldsymbol X}{(3940)}}$ WIDTH

INSPIRE search
VALUE (MeV) CL% EVTS DOCUMENT ID TECN  COMMENT
$37$ ${}^{+26}_{-15}$ $\pm8$ 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. • •
$<52$ 90 25
ABE
2007
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit X}}$
References:
PAKHLOV 2008
PRL 100 202001 Production of New Charmoniumlike States in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit D}^{(*)}}{{\overline{\mathit D}}^{(*)}}$ at $\sqrt {s }$ $\simeq{}$ 10.6 GeV
ABE 2007
PRL 98 082001 Observation of a Charmoniumlike State Produced in Association with ${{\mathit J / \psi}}$ in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation at $\sqrt {s }$ $\sim{}$ 10.6 GeV