Observation of Single Top-Quark Production
Abstract
We report observation of the electroweak production of single top quarks in p pmacr collisions at s=1.96TeV based on 2.3fb-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 σ(p pmacr →tb+X,tqb+X)=3.94±0.88pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5×10-7, corresponding to a 5.0 standard deviation significance for the observation.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2009
- DOI:
- arXiv:
- arXiv:0903.0850
- Bibcode:
- 2009PhRvL.103i2001A
- Keywords:
-
- 14.65.Ha;
- 12.15.Hh;
- 12.15.Ji;
- 13.85.Qk;
- Top quarks;
- Determination of Kobayashi-Maskawa matrix elements;
- Applications of electroweak models to specific processes;
- Inclusive production with identified leptons photons or other nonhadronic particles;
- High Energy Physics - Experiment
- E-Print:
- Published in Phys. Rev. Lett., 7 pages, 4 figures