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Observation of Single Top-Quark Production

V. M. Abazov et al. (D0 Collaboration)
Phys. Rev. Lett. 103, 092001 – Published 24 August 2009
Physics logo See Synopsis: Producing top quarks one at a time

Abstract

We report observation of the electroweak production of single top quarks in pp¯ collisions at s=1.96TeV based on 2.3fb1 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(pp¯tb+X,tqb+X)=3.94±0.88pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5×107, corresponding to a 5.0 standard deviation significance for the observation.

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  • Received 4 March 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.092001

©2009 American Physical Society

Synopsis

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Producing top quarks one at a time

Published 24 August 2009

Two collaborations at Fermilab observe the production of single top quarks.

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See Also

Observation of Electroweak Single Top-Quark Production

T. Aaltonen et al. (CDF Collaboration)
Phys. Rev. Lett. 103, 092002 (2009)

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Vol. 103, Iss. 9 — 28 August 2009

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