Search for CP violation using T-odd correlations in D+→K+KS0π+π- and Ds+→K+KS0π+π- decays
Abstract
We search for CP violation in a sample of 20000 Cabibbo-suppressed decays, D+→K+KS0π+π-, and 30000 Cabibbo-favored decays, Ds+→K+KS0π+π -. We use 520fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- collider operating at center of mass energies near 10.6 GeV. We search for CP violation in the difference between the T-odd asymmetries obtained using triple product correlations of the D+ (Ds+) and D- (Ds-) decays, respectively. The T violation parameter values obtained are AT(D +)=(-12.0±10.0stat±4.6syst) ×10-3 and AT(Ds+)=(-13.6±7.7 stat±3.4syst)×10-3, which are consistent with the standard model expectations. © 2011 American Physical Society.
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