Search For Single Top Quark Production Via Flavour Changing Neutral Currents In Strong Interactions Using Wurzels
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Search for Flavor Changing Neutral Currents in Single Top Quark Production Using 2.3 Fb$^-1$ of $p\bar{p}$ Collisions
We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb−1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on avor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are [sigma]{sub tgu}