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

${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ LEFT-RIGHT ASYMMETRY PARAMETER

INSPIRE   PDGID:
S014A1
Measurements with an error $>$ $1.0 \times 10^{-2}$ have been omitted.
VALUE ($ 10^{-2} $) EVTS DOCUMENT ID TECN
$\bf{ (90 {}^{+110}_{-120}) \times 10^{-3}}$ OUR AVERAGE
$+0.09$ $\pm0.10$ ${}^{+0.09}_{-0.14}$ 1.34M
AMBROSINO
2008D
KLOE
$0.28$ $\pm0.26$ 165k
JANE
1974
OSPK
$-0.05$ $\pm0.22$ 220k
LAYTER
1972
ASPK
• • We do not use the following data for averages, fits, limits, etc. • •
$1.5$ $\pm0.5$ 37k , 1
GORMLEY
1968C
ASPK
1  The GORMLEY 1968C asymmetry is probably due to unmeasured ($\mathbf {E}{\times }$ $\mathbf {B}$) spark chamber effects. New experiments with ($\mathbf {E}{\times }$ $\mathbf {B}$) controls don't observe an asymmetry.
Conservation Laws:
CHARGE CONJUGATION ($\mathit C$) INVARIANCE
References