# ${{\boldsymbol \eta}^{\,'}{(958)}}$ WIDTH INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 0.196 \pm0.009}$ OUR FIT
$\bf{ 0.230 \pm0.021}$ OUR AVERAGE
$0.226$ $\pm0.017$ $\pm0.014$ 2300
 2010
MMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \eta}^{\,'}}$
$0.40$ $\pm0.22$ 4800
 1996
SPEC 1.68 ${{\mathit p}}$ ${{\mathit d}}$ $\rightarrow$ ${}^{3}\mathrm {He}$ ${{\mathit \eta}^{\,'}}$
$0.28$ $\pm0.10$ 1000
 1979
MMS 0 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}$ MM
• • • We do not use the following data for averages, fits, limits, etc. • • •
$0.20$ $\pm0.04$
 2004 J
BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
References:
 CZERWINSKI 2010
PRL 105 122001 Determination of the Total Width of the ${{\mathit \eta}^{\,'}}$ Meson
 BAI 2004J
PL B594 47 A Study of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ $\mathit V({{\mathit \rho}},{{\mathit \phi}}$) Decays with the BESII Detector
 WURZINGER 1996
PL B374 283 Observation of ${{\mathit \eta}^{\,'}{(958)}}$ and ${{\mathit \phi}{(1020)}}$ Meson Production very Close to Threshold in the ${{\mathit p}}$ ${{\mathit d}}$ $\rightarrow$ ${}^{3}\mathrm {He}$ ${{\mathit X}}$ Reaction
 BINNIE 1979
PL 83B 141 First Measurement of the Total Width of the ${{\mathit \eta}^{\,'}{(958)}}$ Meson
see fit info