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Search for Direct CP Violation in K+-->pi+-pi+pi- Decays by NA48/2

I. Mikulec
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Abstract

First preliminary measurement of the direct CP-violating parameter Ag by the NA48/2 experiment at CERN SPS is presented. Using more than 1.6 billions of charged kaon decays into three charged pions, the charge asymmetry in the K+-->pi+-pi+pi- Dalitz plot slope, Ag, has been measured to Ag = (0.5 +- 3.8) x 10^-4. This result is more than an order of magnitude more precise than results of previous experiments.

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I. Mikulec. 2005-05-25. Search for Direct CP Violation in K+-->pi+-pi+pi- Decays by NA48/2. https://arxiv.org/abs/hep-ex/0505081

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