Search for the Flavor-Changing Neutral-Current Decays $D^{+} \to π^{+} μ^{+} μ^{-}$ and $D^{+} \to π^{+} e^{+} e^{-}$

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15 January 1996

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

Vol. 76 (3) , 364-367
https://doi.org/10.1103/physrevlett.76.364

Abstract

We report the results of a search for the flavor-changing neutral-current decays

D^{+} \to π^{+} μ^{+} μ^{-}

and

D^{+} \to π^{+} e^{+} e^{-}

in data from Fermilab charm hadroproduction experiment E791. No signal above background is found, and we obtain upper limits on branching fractions,

B (D^{+} \to π^{+} μ^{+} μ^{-}) < 1.8 \times 10^{- 5}

and

B (D^{+} \to π^{+} e^{+} e^{-}) < 6.6 \times 10^{- 5}

, at the 90% confidence level.

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Version 1, 1995-07-10, ArXiv

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