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PARAMETERS for ${{\mathit K}_L^0}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ DECAY

$\vert \eta _{+−{{\mathit \gamma}}}\vert $ = $\vert $A( ${{\mathit K}_L^0}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ , $\mathit CP$ violating)/A( ${{\mathit K}_S^0}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ )$\vert $

VALUE ($ 10^{-3} $)

EVTS

DOCUMENT ID

TECN

$\bf{ 2.35 \pm0.07}$

OUR AVERAGE

$2.359$ $\pm0.062$ $\pm0.040$

9045

E773

$2.15$ $\pm0.26$ $\pm0.20$

3671

E731

Conservation Laws:

$\mathit CP$ VIOLATION OBSERVED

References:

PRL 75 2803

New Measurement of the $\mathit CP$ Violation Parameter $\eta _{+−{{\mathit \gamma}}}$

PRL 70 2529

First Measurement of the $\mathit CP$ Violation Parameter $\eta _{+−{{\mathit \gamma}}}$ in Neutral Kaon Decays

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