# Search for a fourth generation t' quark in ppbar collisions at sqrt{s}=1.96 TeV

Abstract : We present a search for pair production of a fourth generation t' quark and its antiparticle, followed by their decays to a W boson and a jet, based on an integrated luminosity of 5.3/fb of proton-antiproton collisions at sqrt{s}=1.96 TeV collected by the D0 Collaboration at the Fermilab Tevatron Collider. We set upper limits on the t't'bar production cross section that exclude at the 95% C.L. a t' quark that decays exclusively to W+jet with a mass below 285 GeV. We observe a small excess in the muon+jets channel which reduces the mass range excluded compared to the expected limit of 320 GeV in the absence of a signal.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00588688
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, April 26, 2011 - 9:03:19 AM
Last modification on : Thursday, July 9, 2020 - 9:42:43 AM

### Citation

V.M. Abazov, B. Abbott, B.S. Acharya, M. Adams, T. Adams, et al.. Search for a fourth generation t' quark in ppbar collisions at sqrt{s}=1.96 TeV. Physical Review Letters, American Physical Society, 2011, 107, pp.082001. ⟨10.1103/PhysRevLett.107.082001⟩. ⟨in2p3-00588688⟩

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