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${{\mathit \eta}{(1405)}}$ WIDTH

4 ${{\mathit \pi}}$ MODE

INSPIRE   PDGID:

M027W3

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $160$ $\pm30$ BUGG 1995 MRK3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $144$ $\pm13$ 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

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