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A search for direct CP-violation in K+- --> pi+-pi0pi0 decays based on 47.14million events has been performed by the NA48/2 experiment at the CERN SPS. Theasymmetry in the Dalitz plot linear slopes A_g=(g^+ - g^-)/(g^+ + g^-) ismeasured to be A_g=(1.8 +- 2.6).10^{-4}. The design of the experiment and themethod of analysis provide good control of instrumental charge asymmetries inthis measurement. The precision of the result is limited by statistics and isalmost one order of magnitude better than that of previous measurements byother experiments.

Search for direct CP-violation in K+- --> pi+-pi0pi0 decays