Measurement of CP-violation asymmetries in D0→KS0π +π -

We report a measurement of time-integrated CP-violation asymmetries in the resonant substructure of the three-body decay D{sup 0} {yields} K{sub s}{sup 0}{pi}{sup +}{pi}{sup -} using CDF II data corresponding to 6.0 fb{sup -1} of integrated luminosity from Tevatron p{bar p} collisions at {radical}s=1.96 TeV. The charm mesons used in this analysis come from D*{sup +}(2010){yields}D*{sup -}{pi}{sup +} and D*-(2010){yields}{bar D}{sup 0}{pi}{sup -}, where the production flavor of the charm meson is determined by the charge of the accompanying pion. We apply a Dalitz-amplitude analysis for the description of the dynamic decay structure and use two complementary approaches, namely a full Dalitz-plot fit employing the isobar model for the contributing resonances and a model-independent bin-by-bin comparison of the D{sup 0} and {bar D}{sup -}{sup 0} Dalitz plots. We find no CP-violation effects and measure an asymmetry of A{sub CP}=(-0.05 {+-}0.57(stat){+-}0.54(syst))% for the overall integrated CP-violation asymmetry, CP-violation asymmetry, consistent with the standard model prediction.