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${{\mathit \eta}{(1475)}}$ MASS

INSPIRE   PDGID:

M175M5

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 1476 \pm4}$ OUR AVERAGE  Error includes scale factor of 1.4.  See the ideogram below. $1507.6$ $\pm1.6$ ${}^{+15.5}_{-32.2}$ 126K 1 ABLIKIM 2023 M BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$ $1469$ $\pm14$ $\pm13$ 74 ACHARD 2007 L3 $183 - 209$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $1460$ $\pm12$ 3651 NICHITIU 2002 OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $1485$ $\pm8$ $\pm5$ 20k ADAMS 2001 B B852 18 GeV ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$ $1500$ $\pm10$ CICALO 1999 OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}_S^0}$ ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1464$ $\pm10$ BERTIN 1997 OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}$( ${{\mathit K}^{0}}$) ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $1460$ $\pm10$ BERTIN 1995 OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \pi}}$ $1490$ ${}^{+14}_{-8}$ ${}^{+3}_{-16}$ 1100 BAI 1990 C MRK3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $1475$ $\pm4$ RATH 1989 MPS 21.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1477$ $\pm7$ $\pm13$ 2 ABLIKIM 2018 I BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \phi}{(1020)}}$ $1565$ $\pm8$ ${}^{+0}_{-63}$ 3 ABLIKIM 2015 T BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \eta}}$ $1421$ $\pm14$ AUGUSTIN 1992 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ 1  ABLIKIM 2023M reports for this state a significance from the fit much higher than 35 $\sigma $. 2  From a fit to ${{\mathit \gamma}}{{\mathit \phi}}$ invariant mass. Angular analysis consistent with $\mathit J{}^{PC} = 0{}^{-+}$. Other $\mathit J{}^{PC}$ not excluded. 3  Could also be the ${{\mathit \eta}{(1405)}}$.

${{\mathit \eta}{(1475)}}$ mass (MeV)

References