Exotic Q=-1/3 Quark Signatures at High-Energy Hadron Colliders

Details Exotic Q=-1/3 Quark Signatures at High-Energy Hadron Colliders Exotic Q=-1/3 Quark Signatures at High-Energy Hadron Colliders

2003-09-22

arxiv.org/abs/hep-ph/0309254v2

Phys.Rev. D69 (2004) 035009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Minor changes to text, converted to Revtex4, 38 pages, 9 figures, to be submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.69.035009

Isosinglet vector-like quarks are predicted by some unified theories of electroweak and strong interactions. We study hadron collider signatures for the production and decay of isosinglet vector-like quarks with charge -1/3. Previous analyses of Run I data from the Fermilab Tevatron are used to set lower limits of 100--200 GeV/c^2 on the mass of such quarks, depending on assumptions about mixing with Standard Model quarks and the mass of the Higgs boson. For future Tevatron data (E_{c.m.} = 1.96 TeV) the corresponding mass range is (100-270, 100-320) GeV/c^2 for (1, 10) fb^{-1}. At the CERN Large Hadron Collider (LHC) (E_{c.m.} = 14 TeV, 100 fb^{-1}), an analysis of flavor-changing neutral-current decay modes should probe an $h$ quark mass range of 100-1100 GeV/c^2.

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