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Phys. Rev. Lett. 103, 092001 (2009) [7 pages]

Observation of Single Top-Quark Production

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V. M. Abazov et al. D0 Collaboration
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Received 4 March 2009; revised 10 April 2009; published 24 August 2009

See accompanying Physics Synopsis

We report observation of the electroweak production of single top quarks in pp̅ 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 σ(pp̅ →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 2.5×10-7, corresponding to a 5.0 standard deviation significance for the observation.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.092001
DOI:
10.1103/PhysRevLett.103.092001
PACS:
14.65.Ha, 12.15.Hh, 12.15.Ji, 13.85.Qk

See Also

See Also: T. Aaltonen et al. CDF Collaboration, Observation of Electroweak Single Top-Quark Production, Phys. Rev. Lett. 103, 092002 (2009).