Search for Rare and Forbidden Dilepton Decays of the D+, Ds, and D0 Charmed Mesons

Details Search for Rare and Forbidden Dilepton Decays of the D+, Ds, and D0 Charmed Mesons Search for Rare and Forbidden Dilepton Decays of the D+, Ds, and D0 Charmed Mesons

1999-06-30

arxiv.org/abs/hep-ex/9906045v1

Phys.Lett.B462:401-409,1999

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 3 figures, LaTeX, elsart.cls, epsf.sty, amsmath.sty Submitted to Physics Letters B

Scientific paper

10.1016/S0370-2693(99)00902-8

We report the results of a search for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D+, Ds, 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 Ds 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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