Search for $C P$ Violation in the Decays $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$

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15 February 2008

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 100 (6) , 061803
https://doi.org/10.1103/physrevlett.100.061803

Abstract

We measure time-integrated

C P

-violating asymmetries of neutral charmed mesons in the modes

D^{0} \to K^{-} K^{+}

and

D^{0} \to π^{-} π^{+}

with the highest precision to date by using

D^{0} \to K^{-} π^{+}

decays to correct detector asymmetries. An analysis of

385.8 {fb}^{- 1}

of data collected with the BABAR detector yields values of

a_{C P}^{K K} = (0.00 \pm 0.34 (stat) \pm 0.13 (syst)) %

and

a_{C P}^{π π} = (- 0.24 \pm 0.52 (stat) \pm 0.22 (syst)) %

, which agree with standard model predictions.

Keywords

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Version 1, 2007-09-17, ArXiv

This publication has 16 references indexed in Scilit:

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