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Search for CP Violation in the Decay D+/- to Ks Pi+/-

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Languages : en
Pages : 8

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We report on a search for CP violation in the decay D{sup ±} 2!K{sub S}°[pi]{sup ±} using a data set corresponding to an integrated luminosity of 469 fb−1 collected with the BABAR detector at the PEP-II asymmetric energy ee− storage rings. The CP-violating decay rate asymmetry A{sub CP} is determined to be ( -0.44 ± 0.13(stat) {+-} 0.10(syst))%, consistent with zero at 2.7 [sigma] and with the standard model prediction of ( -0.332 {+-} 0.006)%. This is currently the most precise measurement of this parameter.