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arXiv · 0706.0037

Evidence for single top quark production at D0

Aran Garcia-Bellido
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Abstract

The results of the first analysis to show evidence for production of single top quarks are presented. Using 0.9 fb-1 of data collected with the D0 detector at the Fermilab Tevatron, the analysis is performed in the electron+jets and muon+jets decay modes, taking special care in modeling the large backgrounds, applying a new powerful b-quark tagging algorithm and using three multivariate techniques to extract the small signal in the data. The combined measured production cross section is 4.8 +- 1.3 pb. The probability to measure a cross section at this value or higher in the absence of a signal is 0.027%, corresponding to a 3.5 standard deviation significance.

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Aran Garcia-Bellido. 2007-05-31. Evidence for single top quark production at D0. https://arxiv.org/abs/0706.0037

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