${{\boldsymbol \eta}{(1760)}}$ MASS

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
 $\bf{ 1751 \pm15}$ OUR AVERAGE
$1768$ ${}^{+24}_{-25}$ $\pm10$ 465 1
 2012 A
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1744$ $\pm10$ $\pm15$ 1045 2
 2006 H
BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \omega}}{{\mathit \omega}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$1703$ ${}^{+12}_{-11}$ $\pm2$ 3
 2012 A
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1760$ $\pm11$ 320 4
 1989 B
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ 4 ${{\mathit \pi}}{{\mathit \gamma}}$
 1 From a single-resonance fit.
 2 From a partial wave analysis including ${{\mathit \eta}{(1760)}}$, ${{\mathit f}_{{0}}{(1710)}}$, ${{\mathit f}_{{2}}{(1640)}}$, and ${{\mathit f}_{{2}}{(1910)}}$.
 3 From a two-resonance fit.
 4 Estimated by us from various fits. Systematic uncertainties not estimated.
References:
 ZHANG 2012A
PR D86 052002 First Study of ${{\mathit \eta}_{{c}}{(1S)}}$, ${{\mathit \eta}{(1760)}}$ and ${{\mathit X}{(1835)}}$ Production via ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Final States in Two-Photon Collisions
 ABLIKIM 2006H
PR D73 112007 Pseudoscalar Production at ${{\mathit \omega}}{{\mathit \omega}}$ Threshold in ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \omega}}{{\mathit \omega}}$
 BISELLO 1989B
PR D39 701 First Observation of Three Pseudoscalar States in the ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \rho}}{{\mathit \rho}}$ Decay