PARAMETERS FOR ${{\mathit K}_S^0}$ $\rightarrow$ 3 ${{\mathit \pi}}$ DECAY

Im($\eta _{+−0}){}^{2}$ = $\Gamma\mathrm {( {{\mathit K}_S^0} \rightarrow {{\mathit \pi}^{+}} {{\mathit \pi}^{-}} {{\mathit \pi}^{0}}, \mathit CP-violating)}$ $/$ $\Gamma\mathrm {( {{\mathit K}_L^0} \rightarrow {{\mathit \pi}^{+}} {{\mathit \pi}^{-}} {{\mathit \pi}^{0}})}$

INSPIRE   PDGID:
S012ET+
$\mathit CPT$ assumed valid (i.e. Re($\eta _{+−0}$) $\simeq{}$ 0).
VALUE CL% EVTS DOCUMENT ID TECN
• • We do not use the following data for averages, fits, limits, etc. • •
$<0.23$ 90 601 1
BARMIN
1985
HLBC
$<0.12$ 90 384
METCALF
1972
ASPK
1  BARMIN 1985 find Re($\eta _{+−0}$) = ($0.05$ $\pm0.17$) and Im($\eta _{+−0}$) = ($0.15$ $\pm0.33$). Includes events of BALDO-CEOLIN 1975.
References