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

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:

BARMIN 1985 NC 85A 67 Search for $\mathit CP$ Violation in the ${{\mathit K}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Decay Also SJNP 41 759 Search for $\mathit CP$ Violation in the ${{\mathit K}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Decay METCALF 1972 PL 40B 703 Experimental Study of the Time Dependent Rate of ${{\mathit K}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$

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