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Search for single vector-like quarks in ppbar collisions at sqrt(s) = 1.96 TeV

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Published
Article number081801
<mark>Journal publication date</mark>22/02/2011
<mark>Journal</mark>Physical Review Letters
Issue number8
Volume106
Number of pages7
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

We present a search for hypothetical vector-like quarks in ppbar collisions at sqrt(s) = 1.96 TeV. The data were collected by the D0 detector at the Fermilab Tevatron Collider and correspond to an integrated luminosity of 5.4 fb^(-1). We select events with a final state composed of a W or Z boson and a jet consistent with a heavy object decay. We observe no significant excess in comparison to the background prediction and set limits on production cross sections for vector-like quarks decaying to W+jet and Z+jet. These are the most stringent mass limits for electroweak single vector-like quark production at hadron colliders.

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© 2011 American Physical Society

submitted to Phys. Rev. Lett