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arXiv · hep-ex/0308059

Search for the Flavor-Changing Neutral Current Decay D^0\toμ^+μ^- in p\bar{p} Collisions at \sqrt{s}=1.96 TeV

CDF Collaboration·D. Acosta
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Abstract

We report on a search for the flavor-changing neutral current decay D^0\toμ^+μ^- in p\bar{p} collisions at \sqrt{s}=1.96 TeV using 65\ipb of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D^0 candidates in the D^0\toμ^+μ^- search channel, the kinematically similar D^0\toπ^+π^- channel used for normalization, the Cabbibo-favored D^0\to K^+π^- channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D^0\toμ^+μ^- search window, we set an upper limit on the branching fraction {\cal B}(D^0\toμ^+μ^-)\leq 2.5E-6 (3.3E-6) at the 90% (95%) confidence level.

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CDF Collaboration, D. Acosta. 2003-08-25. Search for the Flavor-Changing Neutral Current Decay D^0\toμ^+μ^- in p\bar{p} Collisions at \sqrt{s}=1.96 TeV. https://doi.org/10.1103/physrevd.68.091101

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