Rights statement: © 2009 The American Physical Society
Final published version, 286 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
| Article number | 092001 |
|---|---|
| <mark>Journal publication date</mark> | 28/08/2009 |
| <mark>Journal</mark> | Physical review letters |
| Issue number | 9 |
| Volume | 103 |
| Number of pages | 7 |
| Pages (from-to) | - |
| Publication Status | Published |
| <mark>Original language</mark> | English |
We report observation of the electroweak production of single top quarks in pp collisions at 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(pp -> 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 2.5x10(-7), corresponding to a 5.0 standard deviation significance for the observation.