Search for CP Violation in the Decay D+/- -> Ks pi+/-

Abstract

We report on a search for CP violation in the decay $D^{\pm }\to K_S^0{\pi }^{\pm }$ using a data set corresponding to an integrated luminosity of $469f{b}^{-1}$ collected with the \slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R} detector at the PEP-II asymmetric energy $e^{+}{e}^{-}$ storage rings. The CPviolating decay rate asymmetry $A_{CP}$ is determined to be $(-0.44\pm 0.13(\mathrm{stat})\pm 0.10(\mathrm{syst}))$, consistent with zero at 2.7 $\sigma$ and with the standard model prediction of $(-0.332\pm 0.006)$. This is currently the most precise measurement of this parameter.

7 pages, 3 figures, submitted to Phys. Rev. Lett

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• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The BABAR Detector
• Decay Chain Fitting with a Kalman Filter
• Nonleptonic weak decays of charmed mesons
• Measurement of Absolute Hadronic Branching Fractions of D Mesons and e^+ e^- --> D D-bar Cross Sections at the psi(3770)
• Interference Between Cabibbo Allowed and Doubly Forbidden Transitions in $D\ra K_{S,L} + π'$s Decays
• Search for CP violation in the decays $D_{(s)}^{+}\to K_S^0{\pi }^{+}$ and $D_{(s)}^{+}\to K_S^0{K}^{+}$
• Flavor Symmetry, K^0-\bar{K}^0 Mixing and New Physics Effects on CP Violation in D^{\pm} and D^{\pm}_s Decays

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