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

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

2006-02-06

arxiv.org/abs/hep-ex/0602014v1

Phys.Lett.B634:474-482,2006

Physics

High Energy Physics

High Energy Physics - Experiment

14 pages, 5 figures

Scientific paper

10.1016/j.physletb.2006.02.011

We report a measurement of the direct CP violation asymmetry parameter $A_g$ in charged kaon decays $K^\pm\to\pi^\pm\pi^+\pi^-$ 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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