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

Abstract : We report on a search for $C\!P$ violation in the decay $D^\pm \to K^0_{\scriptscriptstyle S} \pi^\pm$ using a data set corresponding to an integrated luminosity of $469\,\mbox{\,fb}^{-1}$ collected with the \mbox{\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 $C\!P$-violating decay rate asymmetry $A_{C\!P}$ 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00576901
Contributor : Claudine Bombar <>
Submitted on : Tuesday, March 15, 2011 - 3:55:42 PM
Last modification on : Tuesday, December 22, 2020 - 12:40:02 PM

### Citation

P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe, V. Tisserand, et al.. Search for CP Violation in the Decay D+/- -> Ks pi+/-. Physical Review D, American Physical Society, 2011, 83, pp.071103. ⟨10.1103/PhysRevD.83.071103⟩. ⟨in2p3-00576901⟩

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