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${{\mathit \eta}^{\,'}{(958)}}{}^{C}$-NONCONSERVING DECAY PARAMETER

See the note on ${{\mathit \eta}}$ decay parameters in the Stable Particle Particle Listings for definition of this parameter.

DECAY ASYMMETRY PARAMETER FOR ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$

INSPIRE   PDGID:

M002A

VALUE EVTS DOCUMENT ID TECN  COMMENT $\bf{ -0.03 \pm0.04}$ OUR AVERAGE $-0.019$ $\pm0.056$ AIHARA 1987 TPC ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $-0.069$ $\pm0.078$ 295 GRIGORIAN 1975 STRC 2.1 ${{\mathit \pi}^{-}}{{\mathit p}}$ $0.00$ $\pm0.10$ 103 KALBFLEISCH 1975 HBC 2.18 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ • • We do not use the following data for averages, fits, limits, etc. • • $0.07$ $\pm0.08$ 152 RITTENBERG 1965 HBC 2.1$-$2.7 ${{\mathit K}^{-}}{{\mathit p}}$

Conservation Laws:

CHARGE CONJUGATION ($\mathit C$) INVARIANCE

References

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