Search for CP violation using $T$-odd correlations in $D^0\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ decays

Abstract

We search for CP violation in a sample of $4.7\times 10^4$ Cabibbo-suppressed $D^0\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$ decays. We use 470{\rm fb}^{-1} of data recorded by the BaBar detector at the PEPII asymmetric-energy $e^{+}{e}^{-}$ storage rings running at center-of-mass energies near 10.6 GeV. CP violation is searched for in the difference between the $T$-odd asymmetries, obtained using triple product correlations, measured for $D^0$ and ${\bar{D}}^0$ decays. The measured CP violation parameter is ${\cal A}_T = (1.0 \pm 5.1_{\sta}\pm 4.4_{\sys}) \times 10^{-3}$.

7 pages, 2 postscript figures, submitted to Phys. Rev. Lett

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