Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-07-25
Physics
High Energy Physics
High Energy Physics - Experiment
25 pages, 10 postscript figues, submitted to ICHEP2006
Scientific paper
We search for rare FCNC charm decays of the form $X_c^+\to h^+\llp$, where $X_c^+$ is a charm hadron, $h$ is a pion, kaon or proton, and $\ell^{(}{'}^{)}$ is an electron or a muon. In the pion and kaon modes, we study both $D^+$ and $D_s^+$ decays, while in the proton modes we study $\Lambda_c^+$ decays. Based on a data sample of 288${fb}^{-1}$ of $e^+e^-$ collisions collected by BABAR, we set preliminary 90% confidence level limits between 4 to 40$\times10^{-6}$ for the branching fractions of the different decay modes. For most decay modes, our analysis provides a significant improvement over previous results.
"The BABAR Collaboration
Aubert B.
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