Rights statement: © 2011 American Physical Society
Final published version, 581 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 112001 |
---|---|
<mark>Journal publication date</mark> | 5/12/2011 |
<mark>Journal</mark> | Physical Review D |
Issue number | 11 |
Volume | 84 |
Number of pages | 11 |
Pages (from-to) | - |
Publication Status | Published |
<mark>Original language</mark> | English |
We present measurements of production cross sections of single top quarks in p (p) over bar collisions at root s = 1.96 TeV in a data sample corresponding to an integrated luminosity of 5.4 fb(-1) collected by the D0 detector at the Fermilab Tevatron Collider. We select events with an isolated electron or muon, an imbalance in transverse energy, and two, three, or four jets, with one or two of them containing a bottom hadron. We obtain an inclusive cross section of sigma(p (p) over bar -> tb + X, tqb + X) = 3.43(-0.74)(+0.73) pb and use it to extract the CKM matrix element 0.79 < vertical bar V-tb vertical bar <= 1 at the 95% C.L. We also measure sigma(p<(p)over bar> -> tb + X) = 0.68(-0.35)(+0.38) pb and sigma(p (p) over bar -> tqb + X) = 2.86(-0.63)(+0.69) pb when assuming, respectively, tqb and tb production rates as predicted by the standard model.