Observation of Electroweak Single Top-Quark Production
Abstract
We report the observation of single top-quark production using 3.2fb-1 of p pmacr collision data with s=1.96TeV collected by the Collider Detector at Fermilab. The significance of the observed data is 5.0 standard deviations, and the expected sensitivity for standard model production and decay is in excess of 5.9 standard deviations. Assuming mt=175GeV/c2, we measure a cross section of 2.3-0.5+0.6(stat+syst)pb, extract the CKM matrix-element value |Vtb|=0.91±0.11(stat+syst)±0.07(theory), and set the limit |Vtb|>0.71 at the 95% C.L.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2009
- DOI:
- arXiv:
- arXiv:0903.0885
- Bibcode:
- 2009PhRvL.103i2002A
- 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:
- submitted to Phys. Rev. Lett