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

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

2010-10-07

arxiv.org/abs/1010.1466v3

Phys.Rev.Lett.106:081801,2011

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.106.081801

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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