24–31 Jul 2009
Wayne State University
US/Eastern timezone

Observation of Single Top Quark Production with the D0 Detector

28 Jul 2009, 16:45
25m
McGregor Center, Room L

McGregor Center, Room L

Wayne State University
Top Quark Physics Top Quark Physics II

Speaker

Dr Cecilia Gerber (University of Illinois at Chicago)

Description

We report first observation of the electroweak production of single top quarks in ppbar collisions at sqrt(s) = 1.96 TeV based on 2.3 fb^-1 of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from the fragmentation of b quarks, we measure a cross section of sigma(ppbar -> tb + X, tqb + X) = 3.94 +- 0.88 pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5 x 10^-7, corresponding to a 5.0 standard deviation significance for the observation.

Authors

Aurelio Juste (Fermilab) Horst Wahl (Florida State University) Stefan Soldner-Rembold (University of Manchester)

Presentation materials