${{\boldsymbol \eta}}$ $\boldsymbol C$-NONCONSERVING DECAY PARAMETERS

${{\boldsymbol \pi}^{+}}{{\boldsymbol \pi}^{-}}{{\boldsymbol \gamma}}$ LEFT-RIGHT ASYMMETRY PARAMETER INSPIRE search

Measurements with an error $>$ $0.02$ have been omitted.
VALUE ($ 10^{-2} $) EVTS DOCUMENT ID TECN
$\bf{ 0.9 \pm0.4}$ OUR AVERAGE
$1.2$ $\pm0.6$ 35k
JANE
1974B
OSPK
$0.5$ $\pm0.6$ 36k
THALER
1972
ASPK
$1.22$ $\pm1.56$ 7257
GORMLEY
1970
ASPK
  Conservation Laws:
CHARGE CONJUGATION ($\mathit C$) INVARIANCE
  References:
JANE 1974B
PL 48B 265 Measurement of the Charge Asymmetry in the Decay ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
THALER 1972
PRL 29 313 Charge Asymmetry in the Decay ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
GORMLEY 1970
PR D2 501 Experimental Determination of the Dalitz-Plot Distribution of the Decays ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ and ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ , and the Branching ratio ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $/$ ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$