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

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

1995-07-10

arxiv.org/abs/hep-ex/9507003v1

Phys.Rev.Lett.76:364-367,1996

Physics

High Energy Physics

High Energy Physics - Experiment

nine pages with figures; compressed, uuencoded postscript

Scientific paper

10.1103/PhysRevLett.76.364

We report the results of a search for the flavor-changing neutral-current decays $D^+\rightarrow \pi^+ \mu^+ \mu^-$ and $D^+\rightarrow \pi^+ e^+ e^-$ in data from Fermilab charm hadroproduction experiment E791. No signal above background is found, and we obtain upper limits on branching fractions, $B(D^+\rightarrow \pi^+ \mu^+ \mu^-) < 1.8 \times 10^{-5}$ and $B(D^+\rightarrow \pi^+ e^+ e^-) < 6.6 \times 10^{-5}$, at the 90\% confidence level.

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