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Measurements of single top quark production cross sections and vertical bar V-tb vertical bar in p(p)over-bar collisions at root s=1.96 TeV

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  • V. M. Abazov
  • B. Abbott
  • B. S. Acharya
  • M. Adams
  • T. Adams
  • G. D. Alexeev
  • G. Alkhazov
  • A. Alton
  • G. Alverson
  • G. A. Alves
  • M. Aoki
  • M. Arov
  • A. Askew
  • B. Asman
  • S. Atkins
  • O. Atramentov
  • K. Augsten
  • C. Avila
  • J. BackusMayes
  • F. Badaud
  • L. Bagby
  • B. Baldin
  • D. V. Bandurin
  • S. Banerjee
  • E. Barberis
  • P. Baringer
  • J. Barreto
  • J. F. Bartlett
  • U. Bassler
  • V. Bazterra
  • A. Bean
  • M. Begalli
  • M. Begel
  • C. Belanger-Champagne
  • L. Bellantoni
  • S. B. Beri
  • G. Bernardi
  • R. Bernhard
  • I. Bertram
  • M. Besancon
  • R. Beuselinck
  • V. A. Bezzubov
  • P. C. Bhat
  • V. Bhatnagar
  • G. Borissov
  • H. Fox
  • D. Price
  • P. N. Ratoff
  • A. Ross
  • M. R. J. Williams
  • D0 Collaboration
Article number112001
<mark>Journal publication date</mark>5/12/2011
<mark>Journal</mark>Physical Review D
Issue number11
Number of pages11
Pages (from-to)-
Publication StatusPublished
<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.

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© 2011 American Physical Society