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.
Lees, J., Poireau, V., Tisserand, V., Tico, J., Grauges, E., Martinelli, M., et al. (2011). Search for CP violation using T-odd correlations in D+→ K+KS0π+π- and Ds+→K +KS0π+π- decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(3) [10.1103/PhysRevD.84.031103].
Search for CP violation using T-odd correlations in D+→ K+KS0π+π- and Ds+→K +KS0π+π- decays
CARPINELLI, MassimoMembro del Collaboration Group
;
2011
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.
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