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Search for Rare and Forbidden Charm Meson Decays at Fermilab E791

Fermilab E791 Collaboration·D. J. Summers
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Abstract

We report the results of a blind search for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D+, D(s)+, and D0 mesons (and their antiparticles) into modes containing muons and electrons. Using data from Fermilab charm hadroproduction experiment E791, we examine the pi l l and K l l decay modes of D+ and D(s)+ and the l+ l- decay modes of D0. No evidence for any of these decays is found. Therefore, we present branching-fraction upper limits at 90% confidence level for the 24 decay modes examined. Eight of these modes have no previously reported limits, and fourteen are reported with significant improvements over previously published results.

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Fermilab E791 Collaboration, D. J. Summers. 2000-10-01. Search for Rare and Forbidden Charm Meson Decays at Fermilab E791. https://arxiv.org/abs/hep-ex/0010002

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