We report a measurement of the difference (ΔACP) between
time-integrated CP-violating asymmetries in D0→K+K- and D0→π+π-
decays reconstructed in the full data set of proton-antiproton collisions
collected by the Collider Detector at Fermilab, corresponding to
9.7 fb-1 of integrated luminosity. The strong decay D*+→D0π+ is
used to identify the charm meson at production as D0 or D̅ 0. We measure
ΔACP=[-0.62±0.21(stat)±0.10(syst)]%, which differs from zero by 2.7
Gaussian standard deviations. This result supports similar evidence for
CP violation in charm-quark decays obtained in proton-proton collisions.
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Updated: Thursday, 2012 October 18 11:20:19 CDT automatically from input from Stephanie A Schuler