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

Collaboration, D0 and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ross, Anthony and Williams, Mark and Ratoff, Peter (2011) Search for a fourth generation t' quark in ppbar collisions at sqrt{s}=1.96 TeV. Physical review letters, 107 (8). ISSN 1079-7114

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2011 American Physical Society submitted to Phys. Rev. Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
63667
Deposited By:
Deposited On:
24 Apr 2013 10:04
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Jul 2020 03:39