Search for flavor-changing neutral currents and lepton-family-number violation in two-body D0 decays

D. Pripstein , C.N. Brown , T.A. Carey , Y.C. Chen , R.L. Childers , W.E. Cooper , C.W. Darden , G. Gidal

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K.N. Gounder P.M. Ho L.D. Isenhower D.M. Jansen R.G. Jeppesen D.M. Kaplan J.S. Kapustinsky G.C. Kiang M.S. Kowitt D.W. Lane L.M. Lederman M.J. Leitch J.W. Lillberg W.R. Luebke K.B. Luk P.L. McGaughey C.S. Mishra J.M. Moss J.C. Peng R.S. Preston J. Sa M.E. Sadler R. Schnathorst M.H. Schub V. Tanikella P.K. Teng J.R. Wilson (FNAL E789 Collabration)

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keywords decaysneutralsearchacceleratorbranchingcharmcollectedconfidence

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Results of a search for the three neutral charm decays, D0 -> mu e, D0 -> mu mu, and D0 -> e e, are presented. This study was based on data collected in Experiment 789 at the Fermi National Accelerator Laboratory using 800 GeV/c proton-Au and proton-Be interactions. No evidence is found for any of the decays. Upper limits on the branching ratios, at the 90% confidence level, are obtained.

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