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${{\mathit \eta}{(1405)}}$
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4 ${{\mathit \pi}}$ MODE
${{\boldsymbol \eta}{(1405)}}$ MASS
4 ${{\boldsymbol \pi}}$ MODE
INSPIRE search
VALUE
(MeV)
EVTS
DOCUMENT ID
TECN
COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1420$ $\pm20$
BUGG
1995
MRK3
${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$1489$ $\pm12$
3270
1
BISELLO
1989
B
DM2
${{\mathit J / \psi}}$ $\rightarrow$ 4 ${{\mathit \pi}}{{\mathit \gamma}}$
1
Estimated by us from various fits.
References:
BUGG
1995
PL B353 378
Further Amplitude Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$)
BISELLO
1989B
PR D39 701
First Observation of Three Pseudoscalar States in the ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \rho}}{{\mathit \rho}}$ Decay