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${{\mathit \eta}_{{{2}}}{(1870)}}$ MASS

INSPIRE   PDGID:

M101M

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 1842 \pm8}$ OUR AVERAGE $1835$ $\pm12$ BARBERIS 2000 B 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{f}}}}{{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit p}_{{{s}}}}$ $1844$ $\pm13$ BARBERIS 2000 C 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{f}}}}$4 ${{\mathit \pi}}{{\mathit p}_{{{s}}}}$ $1840$ $\pm25$ BARBERIS 1997 B OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}$2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) $1875$ $\pm20$ $\pm35$ ADOMEIT 1996 CBAR 1.94 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}$3 ${{\mathit \pi}^{0}}$ $1881$ $\pm32$ $\pm40$ $26$ KARCH 1992 CBAL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1860$ $\pm5$ $\pm15$ ANISOVICH 2000 E SPEC $0.9 - 1.94$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}$3 ${{\mathit \pi}^{0}}$ $1840$ $\pm15$ BAI 1999 BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

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