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Search for direct CP violation in the decays K\pm \to 3π\pm

2 Collaboration·J. R. Batley
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Abstract

We report a measurement of the direct CP violation asymmetry parameter $A_g$ in charged kaon decays $K^\pm\toπ^\pmπ^+π^-$ by the NA48/2 experiment at the CERN SPS. The experiment has been designed not to be limited by systematics in the asymmetry measurement. Using $1.67\times 10^9$ such decays collected during the 2003 run, the charge asymmetry in the Dalitz plot linear slope parameter $g$ has been measured to be $A_g=(1.7\pm2.9)\times 10^{-4}$. The precision of the result is limited by the statistics used.

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2 Collaboration, J. R. Batley. 2006-02-06. Search for direct CP violation in the decays K\pm \to 3π\pm. https://doi.org/10.1016/j.physletb.2006.02.011

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