Study of the decays $D^{0}$ →KK¯, ππ¯

Publisher Website

3 September 1990

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

Vol. 65 (10) , 1184-1187
https://doi.org/10.1103/physrevlett.65.1184

Abstract

Using the CLEO detector we have observed the Cabibbo-suppressed decays

D^{0}

→

K^{0}

K

¯^{0}

,

K^{+}

K^{-}

, and

π^{+}

π^{-}

. We determine B(

D^{0}

→

K^{0}

K

¯^{0}

)= (0.

13_{- 0.05 - 0.02}^{+ 0.07 + 0.02}

)%. Our measurement B(

D^{0}

→

K^{+}

K^{-}

)/B(

D^{0}

→

π^{+}

π^{-}

)=2.35±0.37±0.28 represents asubstantial improvement over previous results. We find no evidence for the decay

D^{0}

→

π^{0}

π^{0}

, and place a 90%-confidence-level upper limit of B(

D^{0}

→

π^{0}

π^{0}

)<0.46%.

Keywords

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