Prospects to search for E6 isosinglet quarks in ATLAS

Abstract

We consider pair production of new down-type isosinglet quarks originating from E_{6}, which is the favorite gauge symmetry group in superstring inspired GUT models. The study concentrates on the possibility of observing the pair production of the lightest of the new quarks, D, in the ATLAS detector at the forthcoming LHC accelerator, in the channel D\bar{D}\to ZjZj . Both signal and background events are studied using tree level event generators based on Monte Carlo techniques. The detector effects are taken into account using the ATLAS fast simulation tool, ATLFAST. It is shown that ATLAS can observe the D quark within the first year of low luminosity LHC operation if its mass is less than 650 GeV. For the case of two years of full luminosity running, 1 TeV can be reached with about three sigma significance.

arXiv comment11 pages, short version of an ATLAS-PHYS-PUB-05-021 intended for publication. new version uploaded to appear as a scientific note. In new version, Poisson statistics is used instead of simple S/sqrt(B) used in previous version. Main results remain practically unchanged

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Cited by in corpus (12)

• Identifying top partners at LHC
• Extra vector-like matter and the lightest Higgs scalar boson mass in low-energy supersymmetry
• Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
• Collider aspects of flavour physics at high Q
• Experimental constraints on fourth generation quark masses
• Probing Minimal Flavor Violation at the LHC
• Search for 4th family quarks with the ATLAS detector
• The E6 inspired isosinglet quark and the Higgs boson
• Down Type Isosinglet Quarks in ATLAS
• Production of Single Heavy Charged Leptons at a Linear Collider
• Down type iso-singlet quarks at the HL-LHC and FCC-hh
• After the Standard Model: New Resonances at the LHC