Study of the Decay $D^{0} \to K^{+} π^{-}$

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2 April 2001

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

Vol. 86 (14) , 2955-2958
https://doi.org/10.1103/physrevlett.86.2955

Abstract

Using a large sample of photoproduced charm mesons from the FOCUS experiment at Fermilab (FNAL-E831), we observe the decay

D^{0} \to K^{+} π^{-}

with a signal yield of

149 \pm 31

events compared to a similarly cut sample consisting of

36 760 \pm 195

D^{0} \to K^{-} π^{+}

events. We use the observed ratio of

D^{0} \to K^{+} π^{-}

to

D^{0} \to K^{-} π^{+}

(0.404 \pm 0.085 \pm 0.025) %

to obtain a relationship between the

D^{0}

mixing and doubly Cabibbo suppressed decay parameters.

Keywords

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