Search for Electroweak Production of Single Top Quarks in ppbar Collisions

TL;DR

This paper reports a search for single top quark production via electroweak processes in proton-antiproton collisions, using Fermilab Tevatron data, setting upper limits on production cross sections in different channels.

Contribution

First search for electroweak single top quark production in proton-antiproton collisions using Run 1 data from Fermilab Tevatron.

Findings

Upper limit of 39 pb on s-channel production cross section

Upper limit of 58 pb on t-channel production cross section

Analysis used events with a tagging muon indicating b jets

Abstract

We present a search for electroweak production of single top quarks in the electron+jets and muon+jets decay channels. The measurements use ~90 pb^-1 of data from Run 1 of the Fermilab Tevatron collider, collected at 1.8 TeV with the DZero detector between 1992 and 1995. We use events that include a tagging muon, implying the presence of a b jet, to set an upper limit at the 95% confidence level on the cross section for the s-channel process ppbar->tb+X of 39 pb. The upper limit for the t-channel process ppbar->tqb+X is 58 pb.