Search for a fourth generation quark in collisions at TeV
Collaboration
7 pages
Published in:
- Phys.Rev.Lett. 107 (2011) 082001
e-Print:
- 1104.4522 [hep-ex]
Report number:
- FERMILAB-PUB-11-191-E
Experiments:
Citations per year
Abstract: (arXiv)
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.Note:
- submitted to Phys. Rev. Letters
- 13.85.Rm
- 14.65.Jk
- family: 4
- top: pair production
- Batavia TEVATRON Coll
- heavy quark: pair production
- anti-p p: interaction
- new particle: search for
- heavy quark: postulated particle
- final state: ((n)jet lepton)
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