Searches for the $t^{\prime }$ of a fourth family

Abstract

We study the detection of the $t^{\prime }$ of a fourth family during the early running of LHC with 7 TeV collision energy and 1 fb${}^{-1}$ integrated luminosity. By use of a neural network we show that it is feasible to search for the $t^{\prime }$ even with a mass close to the unitarity upper bound, which is in the 500 to 600 GeV range. We also present results for the Tevatron with $10{\text{fb}}^{-1}$. In both cases the search for a fourth family quark doublet can be significantly enhanced if one incorporates the contribution that the $b^{\prime }$ can make to a $t^{\prime }$-like signal. Thus the bound on the mass of a degenerate quark doublet should be stronger than the bounds obtained by treating $t^{\prime }$ and $b^{\prime }$ in isolation.

arXiv comment10 pages, 4 eps figures, 5 Tables, publication version

References in corpus (18)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• MadEvent: Automatic Event Generation with MadGraph
• Quarks and Leptons Beyond the Third Generation
• Observation of Single Top-Quark Production
• Identifying top partners at LHC
• Four Statements about the Fourth Generation
• Less space for a new family of fermions
• SM with four generations: Selected implications for rare B and K decays
• t' at the LHC: the physics of discovery
• The discovery of the fourth family at the LHC: what if?
• The heavy quark search at the LHC
• Constraints on the Four-Generation Quark Mixing Matrix from a Fit to Flavor-Physics Data
• Review of Properties of the Top Quark from Measurements at the Tevatron
• Approaching a strong fourth family
• Fourth generation effect on ${\Lambda }_b$ decays

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